Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
  • H01H3/08—Turn knobs
  • H01H3/10—Means for securing to shaft of driving mechanism
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
  • H01H3/08—Turn knobs
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock

Definitions

• the present invention relates to a household appliance which comprises a knob assembled on the panel.
• the household appliances for example cooking devices, washing machines etc. comprise a panel, a control unit and knobs for monitoring and controlling their functions.
• the knobs are attached to the shafts of the components they control behind the panel with the help of the sockets on the panel, for example the shafts connected to the switches on the electronic control card or the gas flow control shafts, directly or with the help of spring like components by snap-fitting or with the help of rings or clamps.
• the shafts connected to the knobs also move and the desired functions may be chosen. But as the users actuate the knobs, the weak components fixed to the shafts may be damaged and this may cause the switching handle and thus the household appliance not to function.
• the aim of the present invention is to design a household appliance which comprises a knob which is actuated by the user without damaging the components to which it is attached, which may easily be mounted and fixed to the panel and if required which may easily be dismounted.
• Figure 1 - is the perspective view of a household appliance.
• Figure 2 - is the exploded perspective view of a panel and a control unit.
• Figure 3 - is the perspective view of a knob.
• Figure 4 - is the schematic view of a knob fixed to a panel.
• Figure 5 - is the perspective view of an alternative knob.
• Figure 6 - is the AA sectional view of an alternative knob fixed to a panel.
• the household appliance (1) for example a cooking apparatus, washing machine etc. comprises one or more panels (2) rendering an esthetic appearance, one or more control units (3) situated behind the panel (2), allowing for monitoring or controlling the functions, one or more shafts (8) providing transmitting the user selections to the control unit (3) and the components on it, one or more knobs (4) fixed to the panel (2) so that the shaft (8) is centrally fixed on it, by which the user can actuate the shaft (8) without damaging the panel (2) and/or the control unit (3) to which it is fixed, and a knob socket (10) situated on the panel (2) into which the knob (4) is attached.
• a knob socket situated on the panel (2) into which the knob (4) is attached.
• the knob (4) comprises a switching handle (11) by which the user can hold to actuate it, a base (12) under the switching handle (11) which encompasses the shaft (8), a shaft housing (9) inside the base (12) and/or the switching handle (11), inside which the shaft (8) is situated, the closed end dimensioned and formed, for example with a half-circle section, so that the end of the shaft (8) can fit in a loose fitted way, allowing it to move together with itself, a latch (5) which by connecting to the panel (2) makes it hard for the knob socket (10) to be disengaged, one or more grooves (6) on the side surfaces of the base (12) which partially separates the base (12) side surfaces to flex towards each other due to the flexible structure of the base (12) providing the latch (5) to skip the panel (2) while it is being mounted or dismounted in the knob socket (10) , and a flexion socket (7) inside the shaft housing (9), formed between the shaft (8) and the shaft housing (9), which allows the base (12) side surfaces to approach each
• the panel (2) comprises a retainer
• the knob (4) comprises a retainer socket (13), on the exterior surface of the base (12), into which the retainer (14) is situated .
• the control unit (3) is fixed to the panel (2) so that the shaft (8) can be inserted into the knob socket (10) during assembly.
• the knob (4) is pushed towards the control unit (3) so that the shaft (8) enters into the shaft housing (9) and the base (12) enters into the knob socket (10).
• the base (12) side surfaces are pulled away from the panel (2) by the switching handle (11), approaching each other with the help of the grooves (6) until the latch (5) skips the retainer (14). After the latch (5) skips the retainer, the base (12) is pulled away from the knob socket (10) out of the panel (2). At the same time the shaft (8) will be disengaged from the shaft housing (9) where it is fitted in a loose fitting manner without being strained.
• the shaft (8) which moves together with the knob (4) is influenced by a force or moment only in the direction of the turning movement since the knob (4) is fixed on the panel (2), a force or moment does not affect the control unit (3) on which the shaft (8) is situated.
• the service life of the shaft (8) and the control unit (3) is extended and the defect rates are reduced.
• knob (4) of the present invention can easily be attached to or detached from the panel (2) without the use of an additional component.

Landscapes

• Mechanical Control Devices (AREA)
• Filters For Electric Vacuum Cleaners (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36118282

Family Applications (1)

Country Status (5)

Cited By (5)

Families Citing this family (9)

Citations (2)

• 2005
  • 2005-12-23 WO PCT/IB2005/054395 patent/WO2006067764A1/en active Application Filing
  • 2005-12-23 EP EP05826529A patent/EP1829071B1/de not_active Not-in-force
  • 2005-12-23 AT AT05826529T patent/ATE498189T1/de not_active IP Right Cessation
  • 2005-12-23 DE DE602005026319T patent/DE602005026319D1/de active Active
  • 2005-12-23 ES ES05826529T patent/ES2358209T3/es active Active

Patent Citations (2)

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