EP1995753A1 - Switching element for an appliance, especially for a domestic appliance - Google Patents

Switching element for an appliance, especially for a domestic appliance Download PDF

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Publication number
EP1995753A1
EP1995753A1 EP07010436A EP07010436A EP1995753A1 EP 1995753 A1 EP1995753 A1 EP 1995753A1 EP 07010436 A EP07010436 A EP 07010436A EP 07010436 A EP07010436 A EP 07010436A EP 1995753 A1 EP1995753 A1 EP 1995753A1
Authority
EP
European Patent Office
Prior art keywords
switching element
pushbutton
appliance
element according
reception
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.)
Granted
Application number
EP07010436A
Other languages
German (de)
French (fr)
Other versions
EP1995753B1 (en
Inventor
Klaus Winkelmann
Thomas Meinberger
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to ES07010436.9T priority Critical patent/ES2471968T3/en
Priority to EP07010436.9A priority patent/EP1995753B1/en
Priority to PL07010436T priority patent/PL1995753T3/en
Publication of EP1995753A1 publication Critical patent/EP1995753A1/en
Application granted granted Critical
Publication of EP1995753B1 publication Critical patent/EP1995753B1/en
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
    • H01H25/00—Switches with compound movement of handle or other operating part
    • H01H25/06—Operating part movable both angularly and rectilinearly, the rectilinear movement being along the axis of angular movement
    • H01H25/065—Operating part movable both angularly and rectilinearly, the rectilinear movement being along the axis of angular movement using separate operating parts, e.g. a push button surrounded by a rotating knob

Definitions

  • the invention relates to a switching element for an appliance, especially for a domestic appliance, having in combination an adjustment element for adjusting an operation parameter of the appliance by rotating a disc around an axis of rotation and a switching element for switching an operation parameter of the appliance by pressing a pushbutton in the direction of the axis of rotation.
  • a switching element of the kind mentioned above For example the temperature or intensity of a heating element of a domestic oven can be selected or adjusted by turning a disc to a definite angular position. After the respective position is reached a pushbutton can be pressed to e. g. activate the power supply.
  • the pushbutton has an inscription which should not vary its position so that it is always legible without problems. So, it is desired that the pushbutton remains in a defined angular position even when the disc is turned.
  • the pushbutton should always remain in a defined angular position. Furthermore, the pushbutton as well as the disc should be well guided when used. This should become possible in a cheap way and by using standard elements which are usually employed for appliances, especially for domestic appliances.
  • the solution of this object according to the invention is characterized in that the pushbutton has a circular perimeter, wherein the pushbutton is arranged in a corresponding circular concentrical reception in the adjustment element and wherein means are provided for preventing a rotational movement of the pushbutton relatively to the switching element around the axis of rotation.
  • the switching element has preferably two concentric sleeves, wherein one sleeve is stationary and fixed to a carrier element of the switching element and one sleeve is rotatable and fixed with the disk.
  • the means for preventing a rotational movement of the pushbutton are preferably at least one groove-like reception in the stationary sleeve and at least one protrusion at the switching element which extends into the groove-like reception.
  • the means for preventing a rotational movement of the pushbutton can be at least one protrusion at the stationary sleeve and at least one groove-like reception in the switching element, wherein the protrusion extends into the groove-like reception.
  • a plurality of groove-like receptions and protrusions are arranged around the circumference of the parts.
  • the at least one groove-like reception and the at least one protrusion extends preferably along the axis of rotation at or in the parts.
  • the adjustment element can be connected to the rotatable sleeve by means of at least one protrusion and at least one groove-like reception in which the at least on protrusion extends.
  • the two concentric sleeves can be parts of an encoder.
  • the carrier element can be connected by connection means to a switch panel of the appliance.
  • the disk can be connected with the adjustment element by means of a snap-on connection.
  • the pushbutton can be connected with the switching element by means of a snap-on connection.
  • the pushbutton can be held resiliently in an axial end position by means of a spring element; preferably, the spring element is a coil spring.
  • the switching element can be connected with a switch at the axial end being remote from the pushbutton.
  • a switching element 1 of a domestic oven is shown by which an operation parameter of the domestic appliance can be adjusted and activated.
  • an adjustment element 2 is employed for adjusting the parameter.
  • the adjustment element 2 has a disk 3 which can be rotated around an axis of rotation 4. By doing so, the parameter is adjusted to a desired value, e. g. the intensity or power of a heating element of the domestic oven.
  • an operational parameter can be switched on and off by a switching element 5 which has a pushbutton 6.
  • the pushbutton 6 has a circular perimeter. It is arranged in a corresponding circular concentrical reception 7 in the adjustment element 2.
  • the switching element 5 is connected to a switch panel 14 of a control unit which is part of the appliance. More specifically, the switch panel 14 bears a carrier element 12 which is connected with the switch panel 14 by suitable means.
  • connection means 13 are employed which function as spacers which not only fix the carrier element 12 to the switch panel 14 but also hold it in a fixed relative position to it. Also a screw connection can be employed as connection means.
  • the carrier element 12 bears a switch 16 and other electronic elements necessary to fulfil the desired function (which is not relevant for the invention in question).
  • the switching element 5 is connected with the switch 16 (no permanent connection). I. e. if the pushbutton 6 is pressed the switch 16 is activated.
  • the pushbutton 6 is hold resiliently in an axial end position by means of a coil spring 15, i. e. the pushbutton 6 is pressed against the force of the coil spring 15.
  • the carrier element 12 also bears a pair of concentric sleeves 10 and 11, more specifically an inner stationary sleeve 10 and an outer rotatable sleeve 11. Both sleeves form a part of an encoder.
  • the disc 3 and the adjustment element 2 respectively are torque proof connected with the outer sleeve 11, so that a rotation of the disc 3 actuates the adjustment of an operation parameter. Also, provision is made that the pushbutton 6 and the switching element 5 respectively can be moved axially in the direction of the axis 4 but remains stationary with respect to the angular position.
  • the inner sleeve 10 has a plurality of groove-like receptions 8 (see FIG 2 ) and the switching element 5 has the same number of protrusions 9.
  • the receptions 8 and the protrusions 9 are formed congruently so that the protrusions 9 extent fittingly into the receptions 8.
  • the receptions 8 as well as the protrusions 9 extend in axial direction of the axis 4. Consequently, the switching element 5 can be moved in axial direction without the possibility that a rotational movement occurs between the switching element 5 and the sleeve 10.
  • the receptions 8 and the protrusions 9 form means for preventing a rotational movement between the parts.
  • the outer sleeve 11 has a plurality of groove-like receptions and the adjusting element 2 has the same number of protrusions, which are formed congruently.
  • the receptions as well as the protrusions extend also here in axial direction of the axis 4. Consequently, a torque-proof connection exists between the adjustment element 2 and the sleeve 11.
  • the invention proposal guarantees that a good guidance of the pushbutton 6 and the switching element 5 respectively is established.
  • the pushbutton 6 is secured against a rotational movement. Also standard parts can be used for the suggested switching element.
  • the switch panel 14 not only the switch 16 is arranged but also other relevant and necessary parts of the unit, especially the encoder formed by the sleeves 10 and 11 and other controller elements.
  • snap-on connections can be used where parts have to be connected.
  • the arrangement can be covered by a glass panel 17. As the pushbutton 6 does not rotate it is easily possible to place an inscription on it which remains legible under all circumstances.

Landscapes

  • Switches With Compound Operations (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Push-Button Switches (AREA)

Abstract

The invention relates to a switching element (1) for an appliance, especially fnr a domestic appliance, having in combination an adjustment element (2) for adjusting an operation parameter of the appliance by rotating a disc (3) around an axis (4) of rotation and a switching element (5) for switching an operation parameter of the appliance by pressing a pushbutton (6) in the direction of the axis (4) of rotation. To improve the guidance of the pushbutton and to ensure a fixed angular position of it the invention is characterized in that the pushbutton (6) has a circular perimeter, wherein the pushbutton (6) is arranged in a corresponding circular concentrical reception (7) in the adjustment element (2) and wherein means (8, 9) are provided for preventing a rotational movement of the pushbutton (6) relatively to the switching element (1) around the axis (4) of rotation.

Description

  • The invention relates to a switching element for an appliance, especially for a domestic appliance, having in combination an adjustment element for adjusting an operation parameter of the appliance by rotating a disc around an axis of rotation and a switching element for switching an operation parameter of the appliance by pressing a pushbutton in the direction of the axis of rotation.
  • Especially domestic appliances need often a switching element of the kind mentioned above. For example the temperature or intensity of a heating element of a domestic oven can be selected or adjusted by turning a disc to a definite angular position. After the respective position is reached a pushbutton can be pressed to e. g. activate the power supply. In many cases the pushbutton has an inscription which should not vary its position so that it is always legible without problems. So, it is desired that the pushbutton remains in a defined angular position even when the disc is turned.
  • On the other hand a good guidance is desired for the disc as well as for the pushbutton.
  • Therefore, it is an object of the invention to improve a switching element of the kind mentioned above so that the referred advantages can be obtained. I. e. the pushbutton should always remain in a defined angular position. Furthermore, the pushbutton as well as the disc should be well guided when used. This should become possible in a cheap way and by using standard elements which are usually employed for appliances, especially for domestic appliances.
  • The solution of this object according to the invention is characterized in that the pushbutton has a circular perimeter, wherein the pushbutton is arranged in a corresponding circular concentrical reception in the adjustment element and wherein means are provided for preventing a rotational movement of the pushbutton relatively to the switching element around the axis of rotation.
  • The switching element has preferably two concentric sleeves, wherein one sleeve is stationary and fixed to a carrier element of the switching element and one sleeve is rotatable and fixed with the disk.
  • The means for preventing a rotational movement of the pushbutton are preferably at least one groove-like reception in the stationary sleeve and at least one protrusion at the switching element which extends into the groove-like reception. Alternatively, the means for preventing a rotational movement of the pushbutton can be at least one protrusion at the stationary sleeve and at least one groove-like reception in the switching element, wherein the protrusion extends into the groove-like reception.
  • Preferably a plurality of groove-like receptions and protrusions are arranged around the circumference of the parts.
  • The at least one groove-like reception and the at least one protrusion extends preferably along the axis of rotation at or in the parts.
  • The adjustment element can be connected to the rotatable sleeve by means of at least one protrusion and at least one groove-like reception in which the at least on protrusion extends.
  • The two concentric sleeves can be parts of an encoder.
  • The carrier element can be connected by connection means to a switch panel of the appliance. The disk can be connected with the adjustment element by means of a snap-on connection. Also, the pushbutton can be connected with the switching element by means of a snap-on connection.
  • The pushbutton can be held resiliently in an axial end position by means of a spring element; preferably, the spring element is a coil spring.
  • The switching element can be connected with a switch at the axial end being remote from the pushbutton.
  • In the drawings an embodiment of the invention is depicted.
    • FIG 1
    shows a cross sectional side view through a switching element of a domestic oven and
    FIG 2
    shows the sectional view A-B according to FIG 1.
  • In the figures a switching element 1 of a domestic oven is shown by which an operation parameter of the domestic appliance can be adjusted and activated. For adjusting the parameter an adjustment element 2 is employed. The adjustment element 2 has a disk 3 which can be rotated around an axis of rotation 4. By doing so, the parameter is adjusted to a desired value, e. g. the intensity or power of a heating element of the domestic oven. On the other hand an operational parameter can be switched on and off by a switching element 5 which has a pushbutton 6.
  • As can be seen in the synopsis of FIG 1 and FIG 2 the pushbutton 6 has a circular perimeter. It is arranged in a corresponding circular concentrical reception 7 in the adjustment element 2.
  • The switching element 5 is connected to a switch panel 14 of a control unit which is part of the appliance. More specifically, the switch panel 14 bears a carrier element 12 which is connected with the switch panel 14 by suitable means. In the embodiment according to FIG 1 connection means 13 are employed which function as spacers which not only fix the carrier element 12 to the switch panel 14 but also hold it in a fixed relative position to it. Also a screw connection can be employed as connection means.
  • The carrier element 12 bears a switch 16 and other electronic elements necessary to fulfil the desired function (which is not relevant for the invention in question). The switching element 5 is connected with the switch 16 (no permanent connection). I. e. if the pushbutton 6 is pressed the switch 16 is activated. The pushbutton 6 is hold resiliently in an axial end position by means of a coil spring 15, i. e. the pushbutton 6 is pressed against the force of the coil spring 15.
  • The carrier element 12 also bears a pair of concentric sleeves 10 and 11, more specifically an inner stationary sleeve 10 and an outer rotatable sleeve 11. Both sleeves form a part of an encoder.
  • Provision is made that the disc 3 and the adjustment element 2 respectively are torque proof connected with the outer sleeve 11, so that a rotation of the disc 3 actuates the adjustment of an operation parameter. Also, provision is made that the pushbutton 6 and the switching element 5 respectively can be moved axially in the direction of the axis 4 but remains stationary with respect to the angular position.
  • For this the inner sleeve 10 has a plurality of groove-like receptions 8 (see FIG 2) and the switching element 5 has the same number of protrusions 9. The receptions 8 and the protrusions 9 are formed congruently so that the protrusions 9 extent fittingly into the receptions 8. The receptions 8 as well as the protrusions 9 extend in axial direction of the axis 4. Consequently, the switching element 5 can be moved in axial direction without the possibility that a rotational movement occurs between the switching element 5 and the sleeve 10. As the sleeve 10 is stationary a rotational movement of the pushbutton 6 is prevented. In general, the receptions 8 and the protrusions 9 form means for preventing a rotational movement between the parts.
  • On the other hand, also the outer sleeve 11 has a plurality of groove-like receptions and the adjusting element 2 has the same number of protrusions, which are formed congruently. The receptions as well as the protrusions extend also here in axial direction of the axis 4. Consequently, a torque-proof connection exists between the adjustment element 2 and the sleeve 11.
  • The invention proposal guarantees that a good guidance of the pushbutton 6 and the switching element 5 respectively is established. The pushbutton 6 is secured against a rotational movement. Also standard parts can be used for the suggested switching element.
  • On the switch panel 14 not only the switch 16 is arranged but also other relevant and necessary parts of the unit, especially the encoder formed by the sleeves 10 and 11 and other controller elements.
  • Preferably snap-on connections can be used where parts have to be connected. The arrangement can be covered by a glass panel 17. As the pushbutton 6 does not rotate it is easily possible to place an inscription on it which remains legible under all circumstances.
    • Reference Numerals
    • 1
    Switching element
    2
    Adjustment element
    3
    Disc
    4
    Axis of rotation
    5
    Switching element
    6
    Pushbutton
    7
    Reception
    8, 9
    Means for preventing a rotational movement
    8
    Groove-like reception
    9
    Protrusion
    10
    Inner sleeve (stationary)
    11
    Outer sleeve (rotatable)
    12
    Carrier element
    13
    Connection means
    14
    Switch panel (sheet metal carrier element)
    15
    Spring element
    16
    Switch
    17
    Glass panel

Claims (14)

  1. Switching element (1) for an appliance, especially for a domestic appliance, having in combination an adjustment element (2) for adjusting an operation parameter of the appliance by rotating a disc (3) around an axis (4) of rotation and a switching element (5) for switching an operation parameter of the appliance by pressing a pushbutton (6) in the direction of the axis (4) of rotation,
    characterized in that
    the pushbutton (6) has a circular perimeter, wherein the pushbutton (6) is arranged in a corresponding circular concentrical reception (7) in the adjustment element (2) and wherein means (8, 9) are provided for preventing a rotational movement of the pushbutton (6) relatively to the switching element (1) around the axis (4) of rotation.
  2. Switching element according to claim 1, characterized in that it has two concentric sleeves (10, 11), wherein one sleeve (10) is stationary and fixed to a carrier element (12) of the switching element (1) and one sleeve (11) is rotatable and fixed with the disk (3).
  3. Switching element according to claim 2, characterized in that the means for preventing a rotational movement of the pushbutton (6) are at least one groove-like reception (8) in the stationary sleeve (10) and at least one protrusion (9) at the switching element (5) which extends into the groove-like reception (8).
  4. Switching element according to claim 2, characterized in that the means for preventing a rotational movement of the pushbutton (6) are at least one protrusion at the stationary sleeve (10) and at least one groove-like reception in the switching element (5), wherein the protrusion extends into the groove-like reception.
  5. Switching element according to claim 3 or 4, characterized in that a plurality of groove-like receptions (8) and protrusions (9) are arranged around the circumference of the parts (6, 10).
  6. Switching element according to at least one of claims 3 till 5, characterized in that the at least one groove-like reception (8) and the at least one protrusion (9) extends along the axis (4) of rotation at or in the parts (6, 10).
  7. Switching element according to at least one of claims 2 till 6, characterized in that the adjustment element (2) is connected to the rotatable sleeve (11) by means of at least one protrusion and at least one groove-like reception in which the at least on protrusion extends.
  8. Switching element according to at least one of claims 2 till 7, characterized in that the two concentric sleeves (10, 11) are parts of an encoder.
  9. Switching element according to at least one of claims 2 till 8, characterized in that the carrier element (12) is connected by connection means (13) to a switch panel (14) of the appliance.
  10. Switching element according to at least one of claims 1 till 9, characterized in that the disk (3) is connected with the adjustment element (3) by means of a snap-on connection.
  11. Switching element according to at least one of claims 1 till 10, characterized in that the pushbutton (6) is connected with the switching element (5) by means of a snap-on connection.
  12. Switching element according to at least one of claims 1 till 11, characterized in that the pushbutton (6) is held resiliently in an axial end position by means of a spring element (15).
  13. Switching element according to claim 12, characterized in that the spring element (15) is a coil spring.
  14. Switching element according to at least one of claims 1 till 13, characterized in that the switching element (5) is connected with a switch (16) at the axial end being remote from the pushbutton (6).
EP07010436.9A 2007-05-25 2007-05-25 Switching element for an appliance, especially for a domestic appliance Active EP1995753B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES07010436.9T ES2471968T3 (en) 2007-05-25 2007-05-25 Switching element for an appliance, especially for a domestic appliance
EP07010436.9A EP1995753B1 (en) 2007-05-25 2007-05-25 Switching element for an appliance, especially for a domestic appliance
PL07010436T PL1995753T3 (en) 2007-05-25 2007-05-25 Switching element for an appliance, especially for a domestic appliance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07010436.9A EP1995753B1 (en) 2007-05-25 2007-05-25 Switching element for an appliance, especially for a domestic appliance

Publications (2)

Publication Number Publication Date
EP1995753A1 true EP1995753A1 (en) 2008-11-26
EP1995753B1 EP1995753B1 (en) 2014-04-02

Family

ID=38556681

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07010436.9A Active EP1995753B1 (en) 2007-05-25 2007-05-25 Switching element for an appliance, especially for a domestic appliance

Country Status (3)

Country Link
EP (1) EP1995753B1 (en)
ES (1) ES2471968T3 (en)
PL (1) PL1995753T3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012084627A1 (en) * 2010-12-22 2012-06-28 BSH Bosch und Siemens Hausgeräte GmbH Electric household appliance having a control panel
CN105962791A (en) * 2016-07-01 2016-09-28 九阳股份有限公司 Knob assembly of cooking appliance and cooking appliance
EP3242307A1 (en) 2016-05-03 2017-11-08 Electrolux Appliances Aktiebolag Switching element for a control device
EP3866182A4 (en) * 2018-10-09 2021-12-01 Panasonic Intellectual Property Management Co., Ltd. Press-type input device and press-rotate-type input device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1017077A1 (en) 1998-12-28 2000-07-05 Kabushiki Kaisha Tokai Rika Denki Seisakusho Switch assembly
US20040154910A1 (en) 2003-02-07 2004-08-12 Alps Electric Co., Ltd. Rotary push switch device
US20060096845A1 (en) 2004-11-10 2006-05-11 Preh Gmbh Rotary actuator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1017077A1 (en) 1998-12-28 2000-07-05 Kabushiki Kaisha Tokai Rika Denki Seisakusho Switch assembly
US20040154910A1 (en) 2003-02-07 2004-08-12 Alps Electric Co., Ltd. Rotary push switch device
US20060096845A1 (en) 2004-11-10 2006-05-11 Preh Gmbh Rotary actuator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012084627A1 (en) * 2010-12-22 2012-06-28 BSH Bosch und Siemens Hausgeräte GmbH Electric household appliance having a control panel
EP3242307A1 (en) 2016-05-03 2017-11-08 Electrolux Appliances Aktiebolag Switching element for a control device
WO2017190942A1 (en) 2016-05-03 2017-11-09 Electrolux Appliances Aktiebolag Switching element for a control device
US10522309B2 (en) 2016-05-03 2019-12-31 Electrolux Appliances Aktiebolag Switching element for a control device
CN105962791A (en) * 2016-07-01 2016-09-28 九阳股份有限公司 Knob assembly of cooking appliance and cooking appliance
EP3866182A4 (en) * 2018-10-09 2021-12-01 Panasonic Intellectual Property Management Co., Ltd. Press-type input device and press-rotate-type input device
US11676783B2 (en) 2018-10-09 2023-06-13 Panasonic Intellectual Property Management Co., Ltd. Press-type input device and press-rotate-type input device

Also Published As

Publication number Publication date
PL1995753T3 (en) 2014-08-29
ES2471968T3 (en) 2014-06-27
EP1995753B1 (en) 2014-04-02

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