EP2104125A1 - Knopfanordnung mit elektronischer Komponente und niederdrückbarer Knopf für den Betrieb der Komponente - Google Patents

Knopfanordnung mit elektronischer Komponente und niederdrückbarer Knopf für den Betrieb der Komponente Download PDF

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Publication number
EP2104125A1
EP2104125A1 EP08153167A EP08153167A EP2104125A1 EP 2104125 A1 EP2104125 A1 EP 2104125A1 EP 08153167 A EP08153167 A EP 08153167A EP 08153167 A EP08153167 A EP 08153167A EP 2104125 A1 EP2104125 A1 EP 2104125A1
Authority
EP
European Patent Office
Prior art keywords
button
electronic component
resilient member
actuating element
button assembly
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.)
Ceased
Application number
EP08153167A
Other languages
English (en)
French (fr)
Inventor
designation of the inventor has not yet been filed The
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics 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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Priority to EP08153167A priority Critical patent/EP2104125A1/de
Priority to PCT/IB2009/051044 priority patent/WO2009115963A1/en
Priority to DE200920003843 priority patent/DE202009003843U1/de
Publication of EP2104125A1 publication Critical patent/EP2104125A1/de
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/04—Cases; Covers
    • H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/023—Light-emitting indicators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/7013—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard in which the movable contacts of each switch site or of a row of switch sites are formed in a single plate

Definitions

  • the present invention relates to a button assembly, comprising: an electronic component such as a switching device, i.e. a device which is adapted to be arranged in an electronic circuit and to assume a state for interrupting the circuit or a state for closing the circuit, a depressable button for allowing a user of the button assembly to operate the electronic component, actuating means which are positioned at a back side of the button, and which are adapted to follow a displacement of the button and to act upon the electronic component, a sealed casing enclosing the electronic component, and a resilient member which is incorporated in a wall of the sealed casing.
  • a switching device i.e. a device which is adapted to be arranged in an electronic circuit and to assume a state for interrupting the circuit or a state for closing the circuit
  • actuating means which are positioned at a back side of the button, and which are adapted to follow a displacement of the button and to act upon the electronic component
  • a sealed casing enclosing the
  • the present invention also relates to an appliance comprising at least one button assembly, to a button unit comprising at least two button assemblies, and to an appliance comprising such a button unit.
  • buttons which are suitable to be operated by a user of the appliance for providing input to the appliance.
  • the user has the possibility of controlling the operation of the appliance according to his/her desires.
  • Buttons are often used for operating a switching device, i.e. a well-known device which is adapted to be arranged in an electronic circuit, and which serves for either interrupting or closing the circuit.
  • buttons i.e. buttons which are arranged such as to be displaced in an inward direction with respect to the appliance under the influence of pressure exerted by the user. In most cases, measures are taken to ensure that a depressable button can only be displaced for a certain extent, and that the button returns to an initial position when the pressure is removed. Furthermore, it is usual for the button to be arranged in a hole in a housing of an appliance, wherein a front side of the button may be flush with a surface of the housing in the initial position, or may be protruding with respect to this surface.
  • buttons assembly In order to ensure safe and reliable functioning of the electronics, and to avoid a situation in which steam and/or a liquid may reach the electronics of an appliance, it is known to apply a button assembly as mentioned in the opening paragraph.
  • this button assembly an electronic component is arranged in a sealed casing.
  • the depressable button which is part of this button assembly is not arranged such as to act directly on the electronic component.
  • actuating means which are positioned at a back side of the button are provided, wherein these means are adapted to follow a displacement of the button, and wherein the button is allowed to act on the electronic component through these means.
  • the actuating means may be provided in the form of a single rod extending from the button, but more complicated embodiments are also conceivable.
  • the actuating means are arranged outside of the casing in which the electronic component is located.
  • the actuating means may act on the electronic component, due to the presence of a resilient member which is incorporated in a wall of the casing.
  • the actuating means may act on the electronic component by acting on the resilient member, wherein the electronic component is covered by this resilient member, so that a situation is obtained in which the actuating means may operate the electronic component through the resilient member.
  • the problem of steam and/or a liquid reaching the electronic component is solved on the basis of the fact that the electronic component is arranged in a sealed casing. Furthermore, it is still possible to operate the electronic component, namely by ensuring that a portion of the wall of the casing is flexible and may be locally pushed in the direction of the electronic component from outside the casing.
  • drawbacks associated with the solution according to the state of the art.
  • the known button assembly In the second place, it is not possible to use the known button assembly and have a durable transmittal of light to the button in case a light source such as a light emitting diode (LED) is positioned in the sealed casing.
  • a light source such as a light emitting diode (LED)
  • the casing is transparent, and fixed light guides are arranged on top of the casing.
  • a light guides serve for transmitting light from one area to another area on the basis of a phenomenon known as total internal reflection.
  • the light guide is often provided in the form of a rod of a plastic or another suitable material having translucent properties.
  • the light When light is received at one end of the rod, the light enters the rod, and keeps reflecting on a side wall of the rod while traveling onward until the light reaches another end of the rod.
  • the fact that the light can stay inside the rod is obtained when a refractive index of the rod is higher than a refractive index of its immediate surroundings, which is the case when the rod comprises plastic, and the rod is surrounded by air.
  • a button assembly in which the actuating means comprise an actuating element extending through the resilient member without intermediate space, and in which the actuating element is adapted to act upon the electronic component directly.
  • the actuating element may be connected to the button, or the button may be arranged such as to abut against the actuating element when being put to a depressed state.
  • the tactile feedback which is experienced by a user who presses the button provides a feeling of actually contacting the electronic component, which provides confidence that the electronic component is actually activated.
  • the button assembly according to the present invention, there is no need for an application of resilient compressible material in a path between the actuating means and the electronic component, and therefore the button is capable of providing a feeling of direct contact.
  • the actuating element is extending from the outside of the sealed casing to the inside of the sealed casing, there is no risk of steam and/or a liquid reaching the inside of the sealed casing.
  • the reason is that the actuating element is extending through the resilient member without intermediate space.
  • the resilient properties of the resilient member it is very well possible to have a sealing contact between the resilient member and the actuating element, so that the inside of the sealed casing is protected from external influences.
  • the actuating element is provided in the form of a one-piece element which is connected to the button. In this way, it is ensured that when the user depresses the button for changing the state of the electronic component by contacting the component, the user actually experiences a feeling of direct contact to the electronic component.
  • the actuating element may be supported exclusively by the resilient member.
  • a first advantage of this possibility is that there is no need for additional components for the purpose of providing support.
  • a second advantage of this possibility is that a default position of the actuating element may be defined in this way. Due to the resilient properties of the resilient member, the actuating element is always urged to move back to the default position after the button has been depressed and the actuating element has been displaced deeper into the sealed casing. It is noted that it is advantageous to apply a stop, wherein the default position is accurately defined as a position where abutment to the stop is realized.
  • the present invention also provides a possibility of having transport of light from the inside of the sealed casing to the outside of the sealed casing, wherein this transport is consistent over time.
  • the button assembly may further comprise a light source such as a light emitting diode which is arranged in the sealed casing, wherein the actuating means are adapted to act as a light guide.
  • the actuating element of the actuating means may be provided in the form of a rod made of transparent material.
  • the button may comprise at least one hole for letting out the light, so that the light may shine through this hole.
  • an end of the actuating means may be received in the at least one hole of the button, so that the button may have the hole for letting out the light and at the same time may have the look of a fully closed component.
  • the button may comprise at least one transparent portion for letting out the light.
  • the actuating element comprises a groove, wherein a ring-shaped portion of the resilient member delimiting a hole in the resilient member for letting through the actuating element is received in the groove.
  • the actuating element On the basis of the presence of the groove, it is practically impossible for the actuating element to move with respect to the resilient member, as the ring-shaped portion of the resilient member is retained in the groove and delimited by material of the actuating element in the direction in which the actuating element is displaced when the button is depressed.
  • a diameter of the hole in the resilient member is smaller than a diameter of the groove in the actuating element.
  • the resilient member is firmly tightened around the actuating element in the assembled state, as the resilient member has a constant inclination to decrease the size of its hole.
  • a height of the ring-shaped portion of the resilient member it is possible for a height of the ring-shaped portion of the resilient member to be larger than a height of the groove in the actuating element, so that the ring-shaped portion of the resilient member can only be received in the groove of the actuating element in a depressed state, and the material of the resilient member is pressed against edges delimiting the groove under the influence of an inclination of the resilient member to increase its height again. Nevertheless, in practical cases, it may be sufficient to realize a sealing contact between the resilient member and the actuating element only by having the above-described relation of diameters.
  • the electronic component to be actuated by the actuating element, the light source, and possible other electronic components are connected to a printed circuit board. It is most important to shield such a board from steam and/or a liquid, and therefore, it is preferred if the board is also enclosed by the sealed casing.
  • the present invention also provides a button unit comprising at least two button assemblies.
  • the sealed casings of the various button assemblies may be joined to a single sealed casing.
  • the present invention provides an appliance comprising at least one button assembly or a button unit as mentioned.
  • the at least one button assembly or the button unit may be incorporated in the appliance in such a way that, in a normal operational orientation of the appliance, a front side of the buttons of the at least one button assembly or the button unit has a substantially horizontal orientation.
  • Such orientation of the buttons has the advantage that a user is able to see the buttons from above, so that the user does not need to bend over in order to see the buttons when the appliance is positioned on a kitchen working top, a table or the like. Even in case the appliance is adapted to work with steam and/or a liquid during its operation, there is no risk of the steam and/or the liquid reaching the electronic component to be actuated by the actuating element of the at least one button assembly and possible other electronic components, as these are positioned in a watertight casing.
  • Figure 1 shows a button unit 1 according to the present invention.
  • the button unit 1 has three button assemblies 2, wherein a button assembly 2 is an assembly 2 having a depressable button 3 and electronics 4 to be operated by the button 3.
  • the button unit 1 may be incorporated in any suitable type of appliance in which it is desirable to have two or more depressable buttons for enabling a user of the appliance to control the operation of the appliance.
  • a coffee maker having an on/off button and buttons for setting a quantity of coffee to be made, wherein one button may be associated with a single predetermined quantity and another button may be associated with a double predetermined quantity.
  • buttons for setting a quantity of coffee to be made, wherein one button may be associated with a single predetermined quantity and another button may be associated with a double predetermined quantity.
  • Figures 2 and 3 illustrate an arrangement of the button unit 1 in an appliance having a base housing part 5 which is closeable by means of a hingeably arranged lid 6, wherein a lever 7 is provided for enabling a user of the appliance to lock and unlock an engagement of the lid 6 to the base housing part 5.
  • the button unit 1 is positioned such that the buttons 3 can be reached at the top of the appliance, and the lid 6 has holes 8 for accommodating the buttons 3 of the button unit 1.
  • the electronics 4 of each button assembly 2 of the button unit 1 comprise a microswitch 9 and a LED 10, which are mounted on a printed circuit board 11.
  • the electronics 4 are arranged in a sealed casing 12.
  • the sealed casing 12 is a watertight casing, so that it is impossible for a liquid to reach the electronics 4.
  • the button unit 1 according to the present invention is especially suitable to be applied in appliances which are using or generating steam during their operation and/or which are using a liquid such as water and/or emitting a liquid during their operation. It is noted that in the case of a button unit 1 comprising at least two button assemblies 2, it is an option to have a single sealed casing 12.
  • Each button assembly 2 comprises a rod 13 which is suitable for performing two important functions, namely acting on the microswitch 9 when the button 3 is depressed, and transporting light emitted by the LED 10 when being in an activated state to a front side 14 of the button 3, so that the light may be seen from the outside.
  • the button 3 comprises one or more holes 15 for accommodating an end portion 16 of the rod 13, so that the light which is emitted by this end portion 16 when the LED 10 is in an activated state may shine from the button 3.
  • the button 3 is attached to the rod 13.
  • the figures show one of the many ways in which a connection between the button 3 and the rod 13 may be established.
  • the rod 13 is provided with a collar 17, and the button 3 has two arms 18 having a hook-shaped end portion 19 for engaging the collar 17.
  • the rod 13 is arranged such as to extend all the way from the button 3 to the inside of the sealed casing 12, so that one end portion 20 of the rod 13 is close to the LED 10 for receiving light from the LED 10, and is capable of contacting the microswitch 9.
  • the sealed casing 12 is provided with a hole 21 for allowing the rod 13 to extend to its inside.
  • a resilient member 22 is provided, which is arranged in the hole 21 of the sealed casing 12, which has a hole 23 for allowing the rod 13 to extend from the outside of the sealed casing 12 to the inside of the sealed casing 12, and which is adapted to be in close contact with the rod 13 on the basis of its resiliency.
  • the resilient member 22 may be manufactured from any suitable resilient material.
  • the rod 13 has a groove 24 for accommodating a ring-shaped portion of the resilient member 22.
  • a diameter of the hole 23 of the resilient member 22 is somewhat smaller than a diameter of the groove 24, so that it is achieved that once the rod 13 is put in position with respect to the resilient member 22, the resilient member 22 closes tightly around the rod 13 on the basis of an inclination to bring back its hole 23 to the original size.
  • the dimensions of the ring-shaped portion of the resilient member 22 to be placed in the groove 24 of the rod 13 may be chosen such that the ring-shaped portion is compressed once assembly has taken place, so that it is achieved that the material of the resilient member 22 is biased towards the surface of the groove 24, as a consequence of which a watertight fitting of the rod 13 through the resilient member 22 is obtained.
  • a default position of the rod 13 in the direction in which the rod 13 is displaceable is defined by means of a stop 25, wherein the collar 17 of the rod 13 may be used for contacting this stop 25, and wherein the default position is the position where the collar 17 abuts against the stop 25.
  • the stop 25 is arranged in the lid 6 of the appliance, as illustrated by figure 3 .
  • the rod 13 When a user depresses the button 3, the rod 13 is displaced in the direction of the microswitch 9, wherein the displacement is allowed for by the resilient member 22, which deforms in the process. As the rod 13 acts on the microswitch 9 by actually contacting the microswitch 9, there is no loss of tactile feedback, and the user directly experiences that the microswitch 9 is operated as a result of the depression of the button 3. When the user releases the button 3, the button 3 is moved back to its default position by the resiliency of the resilient member 22, which urges the resilient member 22 to assume its original position again.
  • the rod 13 is not only suitable to be used for operating the microswitch 9, but also has a function in serving as a light guide for transporting light emitted by the LED 10 during its operation to the button 3.
  • the rod 13 is made of a material having translucent properties. The transport of the light through the rod 13 takes place in a manner known perse, namely on the basis of a phenomenon called total internal reflection. As an end portion 20 of the rod 13 is positioned closely to the LED 10, it is achieved that as much as possible light is received from the LED 10, and that an optimal light effect is obtained in the button area.
  • the button assembly 2 as described in the foregoing offers many advantages.
  • this assembly 2 can be used in various types of appliances, as the electronics 4 of this assembly 2 are arranged in a sealed casing 12 and cannot be reached by harmful liquids and/or gases.
  • the depressable button 3 of the button assembly 2 can be oriented such that its front side 14 is in a horizontal position or close to horizontal position, i.e. in a position in which spilled liquid is likely to enter the assembly 2 through the button hole 8 of a housing 5, 6 for accommodating the assembly 2.
  • the assembly 2 comprises a rod 13 extending all the way from the button 3 to the electronic component 9 to be operated.
  • a resilient member 22 for retaining the rod 13 in a hole 21 of the casing 12 in a sealing fashion, a loss of watertightness is prevented.
  • the resilient member 22 may serve as a support of the rod 13, wherein it is possible to have a defined default position for the button 3, wherein a stop 25 may be applied.
  • the rod 13 is suitable to be used as a light guide, wherein a light source such as a LED 10 may be positioned inside the sealed casing 12 and an end portion 20 of the rod 13 may be positioned closely to the light source. In this way, any desirable light effect in the button area may be realized.
  • a light source such as a LED 10
  • an end portion 20 of the rod 13 may be positioned closely to the light source. In this way, any desirable light effect in the button area may be realized.
  • a button assembly 2 which comprises an electronic component 9, a depressable button 3 for allowing a user of the button assembly 2 to operate the electronic component 9, actuating means 13 which are positioned at a back side of the button 3, and which are adapted to follow a displacement of the button 3 and to act upon the electronic component 9, a sealed casing 12 enclosing the electronic component 9, and a resilient member 22 which is incorporated in a wall of the casing 12.
  • the actuating means comprise an actuating element 13 extending through the resilient member 22 without intermediate space, wherein the actuating element 13 is adapted to act upon the electronic component 9 directly.
  • the button assembly 2 is suitable to be used in many types of appliances which need to be equipped with a electronic component 9 and a depressable button 3 for allowing a user of the appliance to operate the electronic component 9, including appliances which are adapted to create an environment with steam, water or another liquid during their operation.
  • a portion of the actuating element 13 is present inside the casing 12, it is very well possible to use this element 13 as a light guide, wherein a light source 10 may be arranged in the casing 12 as well. Consequently, the assembly 2 is also suitable to be used in appliances in which it is desired to have a button 3 with a light effect.

Landscapes

  • Push-Button Switches (AREA)
EP08153167A 2008-03-21 2008-03-21 Knopfanordnung mit elektronischer Komponente und niederdrückbarer Knopf für den Betrieb der Komponente Ceased EP2104125A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08153167A EP2104125A1 (de) 2008-03-21 2008-03-21 Knopfanordnung mit elektronischer Komponente und niederdrückbarer Knopf für den Betrieb der Komponente
PCT/IB2009/051044 WO2009115963A1 (en) 2008-03-21 2009-03-13 Button assembly comprising an electronic component and a depressable button for operating the component
DE200920003843 DE202009003843U1 (de) 2008-03-21 2009-03-18 Tastenanordnung mit einem elektronischen Bauelement sowie einer Drucktaste zum Betreiben des Bauelements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08153167A EP2104125A1 (de) 2008-03-21 2008-03-21 Knopfanordnung mit elektronischer Komponente und niederdrückbarer Knopf für den Betrieb der Komponente

Publications (1)

Publication Number Publication Date
EP2104125A1 true EP2104125A1 (de) 2009-09-23

Family

ID=39506800

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08153167A Ceased EP2104125A1 (de) 2008-03-21 2008-03-21 Knopfanordnung mit elektronischer Komponente und niederdrückbarer Knopf für den Betrieb der Komponente

Country Status (3)

Country Link
EP (1) EP2104125A1 (de)
DE (1) DE202009003843U1 (de)
WO (1) WO2009115963A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104364865A (zh) * 2012-06-05 2015-02-18 矢崎总业株式会社 照明显示开关装置
US9484165B2 (en) 2012-05-31 2016-11-01 Yazaki Corporation Illumination display switching device
JP2020069666A (ja) * 2018-10-30 2020-05-07 セイコーインスツル株式会社 携帯型プリンタ

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019116092B3 (de) * 2019-06-13 2020-05-28 Albrecht Jung Gmbh & Co. Kg Elektrischer Schalter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1262289A (en) * 1968-07-05 1972-02-02 Plessey Co Ltd Improvements relating to push-button electric switches
DE19708064A1 (de) * 1997-02-28 1998-09-03 Mannesmann Vdo Ag Bedieneinrichtung
DE20204005U1 (de) * 2002-03-13 2003-07-17 Bartec Componenten & Syst Gmbh Meldeleuchte
DE10331947A1 (de) * 2003-07-15 2005-02-24 Huf Hülsbeck & Fürst Gmbh & Co. Kg Griff für Türen oder Klappen an Fahrzeugen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1262289A (en) * 1968-07-05 1972-02-02 Plessey Co Ltd Improvements relating to push-button electric switches
DE19708064A1 (de) * 1997-02-28 1998-09-03 Mannesmann Vdo Ag Bedieneinrichtung
DE20204005U1 (de) * 2002-03-13 2003-07-17 Bartec Componenten & Syst Gmbh Meldeleuchte
DE10331947A1 (de) * 2003-07-15 2005-02-24 Huf Hülsbeck & Fürst Gmbh & Co. Kg Griff für Türen oder Klappen an Fahrzeugen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9484165B2 (en) 2012-05-31 2016-11-01 Yazaki Corporation Illumination display switching device
CN104364865A (zh) * 2012-06-05 2015-02-18 矢崎总业株式会社 照明显示开关装置
US9542017B2 (en) 2012-06-05 2017-01-10 Yazaki Corporation Illumination display switching device
JP2020069666A (ja) * 2018-10-30 2020-05-07 セイコーインスツル株式会社 携帯型プリンタ
JP2023024503A (ja) * 2018-10-30 2023-02-16 セイコーインスツル株式会社 携帯型プリンタ

Also Published As

Publication number Publication date
WO2009115963A1 (en) 2009-09-24
DE202009003843U1 (de) 2009-06-04

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