Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
  • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
  • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
  • D06F34/30—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress characterised by mechanical features, e.g. buttons or rotary dials
• • 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
  • H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
• • 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
  • H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
  • H01H19/58—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch
  • H01H19/585—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch provided with printed circuit contacts
• • 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
  • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
  • H01H1/40—Contact mounted so that its contact-making surface is flush with adjoining insulation
  • H01H1/403—Contacts forming part of a printed circuit

Definitions

• the invention relates to a rotary selector switch and a circuit with a rotary selector switch.
• Rotary selector switches are used for example for household appliances in the form of dryers and washing machines, by means of the rotary selector switch both a switching on and off of the household appliance as well as a program selection, a heating power setting, etc. can take place.
• the rotary selector switches usually comprise a coding device which generates an angle-dependent code over a predetermined angular range, which corresponds to a program to be selected.
• the household appliance When a program to be processed of the household appliance is completely processed, the household appliance is usually automatically, ie without the user's help, transferred to an off state. In this case, it is desirable that the household appliance does not absorb power in the off state. At the same time, it is necessary for the budgetary - - Device from the off-state is simply converted back to a normal operating state.
• the invention has for its object to provide a rotary selector switch and a circuit with a rotary selector switch, by means of which a power consumption in the off state can be avoided and allow easy transfer from the off state to a normal operating state.
• the rotary selector switch comprises a first switching contact which is open in an off-angle range of the rotary selector switch and which is closed outside the off-angle range, in particular for switching on or off an electrical consumer, and an encoder which is an angle-dependent over a predetermined angular range of the rotary selector switch Code generated, for example, with a range of eight different codes to select eight different programs.
• the rotary selector switch comprises a second switching contact independent of the first switching contact, which is closed in a plurality of starting angular ranges and which is open outside the starting angular ranges.
• the switching contacts may, for example, in each case comprise an associated switching spring, which are actuated or deflected by means of suitable switching cams on a switching drum, whereby an opening or grinding of the corresponding switching contact is effected during a rotation.
• the rotary selector switch comprises a third switching contact which is open in the off-angle range and which is closed outside the off-angle range, and / or a fourth switching contact which is closed in the plurality of starting angle ranges and the outside ßercher Start angle ranges is open.
• a two-phase potential separation can be done by means of the rotary selector switch.
• the off-angle range comprises angles between -40 ° and 40 °, in particular -20 ° and 20 °, the sign "°" denotes angle-degree.
• the number of start angle ranges corresponds to a number of different codes which can be coded by means of the coding device.
• the number of start angle ranges or different codes can be, for example, eight. In this way, a reconnection can already take place in that the rotary switch is rotated from an angular position corresponding to a predetermined code or program to an adjacent angular position which corresponds to a different code or program.
• the starting angular ranges are sequentially equidistant, ie distributed with mutually identical angular distances, over a predetermined angular range, for example 360 °.
• the division may alternatively be different.
• the starting angle ranges each have a width of approximately 10 °.
• the circuit according to the invention comprises a rotary selector switch according to the invention, an electrical load having a first and a second supply voltage connection and at least one switching means controlled by the electrical load.
• a first terminal of the first switching contact is connected to a first pole of a supply voltage, for example the mains voltage, between a second terminal of the first switching contact and the first supply voltage terminal is connected to the controllable switching means and the second switching contact is between the first pole of the supply voltage and the first Supply voltage connection looped in.
• the first and the second switching contact may be connected in series between the first pole of the supply voltage and the first supply voltage terminal.
• the circuit comprises exactly two switching means controlled by the electrical load, wherein the first switching means is looped between the second terminal of the first switching contact and the first supply voltage terminal, a first terminal of the third switching contact is connected to a second pole of the supply voltage, between the second terminal of the third switching contact and the second supply voltage terminal, the second switching means is looped, the second switching contact between the first pole of the supply voltage and the first supply voltage terminal is looped, and the fourth switching contact between the second pole of the supply voltage and the second supply voltage terminal is looped.
• the switching means are relays. - -
• FIG. 1 is an electrical equivalent circuit diagram of a first embodiment of a rotary selector switch according to the invention
• FIG. 2 is a circuit state diagram of switch contacts of the rotary dial switch shown in FIG. 1;
• Fig. 3 is a circuit diagram of a circuit according to the invention with the in
• Fig. 1 shown rotary switch
• Fig. 4 is a circuit diagram of a circuit according to the invention with a further embodiment of a rotary selector switch according to the invention.
• Fig. 1 shows an electrical equivalent circuit diagram of a first embodiment of a rotary selector switch 100 according to the invention.
• the rotary selector switch 100 is conventionally operated by a user by rotating an unshown control panel of the rotary selector switch about an axis A (see Fig. 2) until the rotary selector switch 100 resp whose control panel has reached a desired angular position, which corresponds for example to a program that the user wishes to set by means of the rotary selector switch.
• the rotary selector switch 100 comprises a first switching contact 1 10, a second switching contact 130, a third switching contact 1 1 1, a - Optional fourth switch contact 131 and a conventional encoder 120 which generates an angle-dependent code over a predetermined angular range.
• the coding device 120 connects terminals A to D in an angle-dependent manner with connection E. If, for example, a voltage is impressed on the connection E, it is applied to the connections A to D if an associated switch is closed. In theory, 16 different angular positions can be coded in this way. In the embodiment shown, see Fig. 2, predetermined angular positions 0 to 7 unique codes of the encoder 120 are assigned.
• the coding device 120 can be realized, for example, by means of electrically conductive circular arcs on a printed circuit board and associated electrically conductive grinders which grind, for example, at an actuation or rotation of the rotary selector switch in predetermined angular positions on the circular arcs, which in the predetermined angular positions corresponding to the switches of the encoder 120 getting closed.
• the first switching contact 1 10 and the third switching contact 1 1 1 are each open in the off-angle range and are otherwise closed.
• the second switching contact 130 and the fourth switching contact are each open in the off-angle range and are otherwise closed.
• the off-angle range ßaus comprises exemplary angles between -20 ° and 20 °.
• the starting angular ranges cd to a8 each have exem- - - Plarisch a width of about 10 ° and are distributed sequentially equidistant over a total of 360 °.
• the number of start angle ranges cd to a8 is identical to the number of different codes coded by the encoder 120.
• the encoder 120 generates eight different codes, i. a total of eight starting angular ranges cd to a8 are provided, which are arranged centrally between the predetermined angular positions 0 to 7. It is understood that more or fewer than eight angular positions or starting angular ranges can be provided.
• the off-angle range ⁇ out can be selected as a function of the number of predetermined angular positions or the number of different codes which are coded by means of the coding device 120. With increasing number of predetermined angular positions, the off-angle range ßaus or its width is smaller.
• the switching contacts 1 10, 1 1 1, 130 and 131 each include an associated switching spring, not shown, which are actuated or deflected by means of suitable switching cam on a shift drum, whereby upon rotation of the shift drum due to an actuation of the rotary selector 100 an opening or Close the corresponding switch contact as shown in Fig. 2 is effected. - -
• FIG. 3 shows a circuit diagram of a circuit according to the invention with the rotary selector switch 100 shown in FIG.
• the circuit further comprises an electrical load 200 having first and second supply voltage terminals 201 and 202 and two switching means controlled by the electrical load 200 in the form of relays 203 and 204.
• the relays each have conventionally a relay coil and a normally open contact.
• the relay 203 is optional.
• the electrical load 200 may be, for example, a device controller with a microprocessor for a household appliance, for example a tumble dryer, a dishwasher or a washing machine.
• the rotary selector switch 100 serves, for example, for setting the power and / or for selecting different operating mode programs over the angle of rotation set by a user.
• a first terminal 2 of the first switch contact 1 10 is connected to a first pole L of a mains voltage, between the second terminal 4 of the first switch contact 1 10 and the first supply voltage terminal 202 of the electrical load 200, the normally open contact of the relay 204 is looped, a first terminal.
• the third switching contact 1 1 1 is connected to a second pole N of the mains voltage, between the second terminal 3 of the third switching contact 1 1 1 and the second supply voltage terminal 201 of the electrical load 200, the normally open contact of the relay 203 is looped, the second switching contact 130 is between the first pole L of the mains voltage and the first supply voltage terminal 202 of the electrical load 200 looped, ie a first terminal 2 of the second switching contact 130 is connected to the first pole L of the mains voltage and a second terminal 5 of the second switching contact 130 is connected to the firstticianssp connection 202 of the electrical load 200, and the fourth - -
• Switch contact 131 is connected between the second pole N of the mains voltage and the second supply voltage terminal 201 of the electrical load 200, i. a first terminal 1 of the fourth switching contact 131 is connected to the second pole N of the mains voltage, and a second terminal 6 of the fourth switching contact 131 is connected to the second supply voltage terminal 201 of the electrical consumer 200.
• control unit for the first time assumes an angular position outside the off-angle range ßaus and within the starting angle range cd or a8, close the respective switch contacts 1 10, 1 1 1, 130 and 131, initially the normally open contacts of the relays 203 and 204 open stay. A supply of the electrical load 200 then takes place via the respective closed switch contacts 130 and 131.
• the electrical load 200 now controls the coils of the relays 203 and 204 such that close their respective normally open contacts. This has the effect that, even when the switching contacts 130 and 131 are opened, the electrical load 200 continues to be supplied due to leaving the starting angular range cd or a8. As a result, a self-holding state is established. - -
• the electrical load 200 controls the relays 203 and 204 such that their respective normally open contacts open to effect an off state. Since the predetermined angular positions 1 to 7 are chosen such that they do not overlap with the starting angular ranges cd to a8, i. the switch contacts 130 and 131 are opened, the electrical load is completely disconnected from the mains voltage, whereby no power consumption by the electrical load 200 is in the off state.
• a reconnection of the electrical load 200 then takes place only in that the rotary selector switch is moved over one of the starting angular ranges cd to a8.
• FIG. 4 shows a circuit diagram of a circuit according to the invention with a further embodiment of a rotary selector switch 100 'according to the invention.
• the relay 203 shown in FIG. 3 and the switching contact 131 and the switching contacts 1 10 and 130 are connected in series between the pole L of the mains voltage and the first supply voltage connection 202.
• ßaus only a single-pole network separation takes place.
• the electrical load 200 turns off by opening the relay (s) 203 and 204 itself.
• a short rotation of the rotary selector switch closes the wiping contacts 130 and 131 in the starting angular ranges cd to a8, thereby causing them to leave the stand-by state.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
• Analogue/Digital Conversion (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=44558428

Family Applications (1)

Country Status (6)

Families Citing this family (4)

Family Cites Families (8)

• 2010
  • 2010-07-02 DE DE102010030897A patent/DE102010030897A1/de not_active Withdrawn
• 2011
  • 2011-07-01 EP EP11729616.0A patent/EP2589061A1/de not_active Withdrawn
  • 2011-07-01 WO PCT/EP2011/061145 patent/WO2012001159A1/de active Application Filing
  • 2011-07-01 US US13/808,554 patent/US20130180840A1/en not_active Abandoned
  • 2011-07-01 CN CN201180042334XA patent/CN103210462A/zh active Pending
  • 2011-07-01 MX MX2013000145A patent/MX2013000145A/es not_active Application Discontinuation

Non-Patent Citations (1)

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