WO1981000787A1 - Switch structure with touch element - Google Patents

Switch structure with touch element Download PDF

Info

Publication number
WO1981000787A1
WO1981000787A1 PCT/GB1980/000141 GB8000141W WO8100787A1 WO 1981000787 A1 WO1981000787 A1 WO 1981000787A1 GB 8000141 W GB8000141 W GB 8000141W WO 8100787 A1 WO8100787 A1 WO 8100787A1
Authority
WO
WIPO (PCT)
Prior art keywords
switch
finger
switch structure
touch
switch means
Prior art date
Application number
PCT/GB1980/000141
Other languages
French (fr)
Inventor
E Marshall
Original Assignee
Marshall E Design Int Ltd
E Marshall
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 Marshall E Design Int Ltd, E Marshall filed Critical Marshall E Design Int Ltd
Priority to DE8080901665T priority Critical patent/DE3070065D1/en
Publication of WO1981000787A1 publication Critical patent/WO1981000787A1/en

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70Switches 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
    • H01H13/702Switches 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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/52Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00Tactile feedback
    • H01H2215/002Longer travel
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00Facilitation of operation; Human engineering
    • H01H2217/006Different feeling for different switch sites
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00Actuators
    • H01H2221/036Return force
    • H01H2221/038Fluid
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00Actuators
    • H01H2221/036Return force
    • H01H2221/042Foam

Definitions

  • This invention relates to a touch element incorporated in a switch structure for operation by light touch of the finger-tips of an operator, for example for the operation of an electrical typewriter, a computer terminal or other electronic machine into which information must be fed.
  • switch means of that kind in which there is no movable element to be moved by the finger-tip in the course of an actuation of the switch e.g. known proximity switches
  • there is no relative movement of the finger-tip surface after making contact with the exposed surface of the switch means and accordingly there is no "touch” experienced by the operator who must assume that the mere contacting of the switch means has in fact actuated the switch means.
  • OMPI may be far from that which is desirable, in the sense of "touch" for the operator.
  • non-shiftable switch means indicates hereinafter a switch means which has no element requiring to be moved by the finger-tip to cause actuation of the switch
  • shiftable switch means indicates hereinafter a switch means having an element which requires to be moved by the finger-tip to cause actuation of the switch
  • an electrical switch structure for actuation with the finger-tips, comprises switch means having a surface towards which the finger-tip is moved to cause actua ⁇ tion, and a touch element overlying that surface and presenting an exposed face for contacting with the finger-tip, the touch element having between that face and that surface a zone which provides resilient resistance to movement of that face towards that surface.
  • the touch element may comprise a simple layer of a resiliently deformable nature overlying the surface of the switch means, the remote face of the layer being exposed for contacting with the finger-tips.
  • the resist ⁇ ance zone includes or consists of resilient solid or resilient cellular material.
  • the touch element comprises a f nger-contact sheet which is discrete from the resistance zone and on which the exposed face of the touch element is provided.
  • the resistance zone may include or consist of gas, liquid, resilient solid or resilient cellular material, or any combination thereof.
  • Figure 2 is a schematic vertical section of a second embodiment, suitable for a non-shiftable switch means
  • Figure 3 is a schematic vertical section of a
  • OMP ⁇ V/IPO third embodiment suitable for a ⁇ cn-shiftable switch means
  • Figure 4 is a schematic vertical section of a fourth embodiment, suitable for a shiftable switch means (as hereinbefore defined) ;
  • Figure 5 is a schematic vertical section of a fifth embodiment, suitable for a shiftable switch means.
  • Figure 6 is a schematic vertical section of a sixth embodiment, suitable for a shiftable switch means.
  • a switch structure having a touch element and switch means of non-shiftable type.
  • the switch means 1 is for example a known proximity switch. It suffices to state that the switch is actuated by the placing of a finger tip onto, or very near to, the upper surface 2. Such a switch may be operated by simply placing the finger ⁇ tips onto the exposed upper surface 2, but there is a correspondingly "dead" touch for the operator.
  • a touch element which comprises a finger-contact sheet 3 which is normally spaced from the upper surface 2.
  • the sheet 3 is flexible, or resiliently bendable. Between the sheet 3 and the upper surface 2 there is a zone 4 of a resilient loading medium, which may be
  • IP air or other gas at atmospheric pressure, or air or other gas at greater than atmospheric pressure, or a liquid displaceable against resilient loading, or with controlled displacement, or a resiliently deformable material such as an elastomeric or plastics material in solid or cellular state. Any combination of such gas, liquid and material may be provided in the zone 4 between the sheet 3 and the surface 2.
  • the zone 4 may be compartmente , provided with different exhaust or displacement paths, or otherwise modified from location to location of switching positions so as to provide different "touch" characteristics at different locations of the sheet 3. This may be useful, for example, to lessen the relative pressure to be applied by a typist's third and fourth fingers. Similarly, the physical characterists of any material included in the zone 4 may be modified from location to location.
  • the switch structure has been illus- trated as including boundary spacer means 5 between the sheet 3 and the surface 2, these may be omitted and the sheet 3 caused to contact the surface 2, say at edge portions.
  • FIG. 2 is a similar view of a structure in which the discrete sheet 3 is eliminated and is replace in function by the exposed upper face portion 6 of a layer 7 of resiliently compressible material, e.g. a layer of a cellular material.
  • Figure 3 is a similar view of a structure in which the components of the touch element are the same as in Figure 1, but with the addition of a lower bounding sheet 8 for the zone 4.
  • This provision enables the assembly of sheet 3 and sheet 8, with an intermediate zone 4 of gas, liquid, solid or cellular material, to be manufactured as a separate entity which can be applied to a switch 1.
  • FIG. 4 there is shown a combination of touch element with switch means of the shiftable type. It suffices to state that the switch 9 is actuated by movement, with the finger-tip, of an element 10 of the switch in the direction of the arrow "A", with respect to the remainder of the switch 9.
  • the element 10 is physically connected to the remainder of the switch, and is situated beneath a finger-contact sheet 11 which is spaced above the switch 9 by a zone 12 having any of the characteristics described above for the zone 4 of Figures 1-3.
  • the discrete finger-contact sheet 11 may be eliminated in the manner described for Figure 2.
  • Figure 5 shows a construction which is similar to that of Figure 4, and to which the same character- istics and modifications may be applied, but wherein the shiftable switch element 10a_ is normally flush with, or below, the upper surface of the switch 9.
  • Figure 6 shows a construction which is similar to that of Figure 4, and to which the same character- istics and modifications may be applied, but wherein the shiftable switch element 10b is carried at the underside of the finger-contact sheet 11 or its equi ⁇ valent.
  • the sheet 3 or 11, or the exposed upper face of the material of zone 4 or 12, may be in plate or strip form, and marked with switch indications or left unmarked, and may be physically modified at areas to indicate where finger-tip contact is desired, e.g. provided with raised or depressed areas to assist in seeing, and finding with the finger-tip, the required switch location.
  • the desired "touch”, involving extent of movement for switch operation and the desired resistance to finger- tip movement, may be imparted to the switch means irrespective of the natural "touch", or lack of it, in the switch means as manufactured.

Abstract

A switch structure includes switch means operable by the finger-tips of an operator, e. g. in an electrical typewriter or computer terminal. To impart a desired "touch" characteristic, the switch structure has a touch element overlying the contact surface, or switch actuation element, of the switch means, the touch element providing a degree of resilient resitance to touch and pressure by the fingertips. The resistance may be that of resilient solid or cellular material, displaceable liquid, or gas, or any combination thereof.

Description

"SWITCH STRUCTURE WITH TOUCH ELEMENT"
This invention relates to a touch element incorporated in a switch structure for operation by light touch of the finger-tips of an operator, for example for the operation of an electrical typewriter, a computer terminal or other electronic machine into which information must be fed.
With switch means of that kind in which there is no movable element to be moved by the finger-tip in the course of an actuation of the switch, e.g. known proximity switches, there is no relative movement of the finger-tip surface after making contact with the exposed surface of the switch means, and accordingly there is no "touch" experienced by the operator who must assume that the mere contacting of the switch means has in fact actuated the switch means. Expressed in another way, there is no velocity feedback, through the finger-tip, to the operator and this may be experienced as a lack of achievement which is the opposite of the satisfying displacement of a typewriter key or snap-switch.
Similarly, with switch means which do possess an element which must be shifted by the finger-tip to give rise to an actuation of the switch means, the manner of and extent of shifting of the switch element
OMPI may be far from that which is desirable, in the sense of "touch" for the operator.
In the context of this specification, the term "non-shiftable" switch means indicates hereinafter a switch means which has no element requiring to be moved by the finger-tip to cause actuation of the switch, and the term "shiftable" switch means indicates hereinafter a switch means having an element which requires to be moved by the finger-tip to cause actuation of the switch.
It is the object of the present invention to provide a switch structure incorporating a touch element whereby there may be imparted a desired "touch" characteristic for a non-shiftable switch means, or a modified "touch" characteristic for a shiftable switch means.
According to the present invention an electrical switch structure, for actuation with the finger-tips, comprises switch means having a surface towards which the finger-tip is moved to cause actua¬ tion, and a touch element overlying that surface and presenting an exposed face for contacting with the finger-tip, the touch element having between that face and that surface a zone which provides resilient resistance to movement of that face towards that surface. In its simplest form, the touch element may comprise a simple layer of a resiliently deformable nature overlying the surface of the switch means, the remote face of the layer being exposed for contacting with the finger-tips. By way of example, the resist¬ ance zone includes or consists of resilient solid or resilient cellular material.
In another form, the touch element comprises a f nger-contact sheet which is discrete from the resistance zone and on which the exposed face of the touch element is provided. With such a construction, the resistance zone may include or consist of gas, liquid, resilient solid or resilient cellular material, or any combination thereof. In order that the invention may be readily ascertained, some embodiments of switch structure with a touch element, in accordance with the invention, are hereinafter particularly described with reference to the accompanying drawings, wherein:- Figure 1 is a schematic vertical section of a first embodiment, suitable for a non-shiftable switch means (as hereinbefore defined) ;
Figure 2 is a schematic vertical section of a second embodiment, suitable for a non-shiftable switch means;
Figure 3 is a schematic vertical section of a
OMPΓ V/IPO third embodiment, suitable for a πcn-shiftable switch means;
Figure 4 is a schematic vertical section of a fourth embodiment, suitable for a shiftable switch means (as hereinbefore defined) ;
Figure 5 is a schematic vertical section of a fifth embodiment, suitable for a shiftable switch means; and
Figure 6 is a schematic vertical section of a sixth embodiment, suitable for a shiftable switch means.
Referring to Figure 1, there is shown a switch structure having a touch element and switch means of non-shiftable type. The switch means 1 is for example a known proximity switch. It suffices to state that the switch is actuated by the placing of a finger tip onto, or very near to, the upper surface 2. Such a switch may be operated by simply placing the finger¬ tips onto the exposed upper surface 2, but there is a correspondingly "dead" touch for the operator. In accordance with this invention there is provided a touch element which comprises a finger-contact sheet 3 which is normally spaced from the upper surface 2. The sheet 3 is flexible, or resiliently bendable. Between the sheet 3 and the upper surface 2 there is a zone 4 of a resilient loading medium, which may be
OM ,. IP air or other gas at atmospheric pressure, or air or other gas at greater than atmospheric pressure, or a liquid displaceable against resilient loading, or with controlled displacement, or a resiliently deformable material such as an elastomeric or plastics material in solid or cellular state. Any combination of such gas, liquid and material may be provided in the zone 4 between the sheet 3 and the surface 2.
Where gas or liquid is included, the zone 4 may be compartmente , provided with different exhaust or displacement paths, or otherwise modified from location to location of switching positions so as to provide different "touch" characteristics at different locations of the sheet 3. This may be useful, for example, to lessen the relative pressure to be applied by a typist's third and fourth fingers. Similarly, the physical characterists of any material included in the zone 4 may be modified from location to location. Although the switch structure has been illus- trated as including boundary spacer means 5 between the sheet 3 and the surface 2, these may be omitted and the sheet 3 caused to contact the surface 2, say at edge portions. The sheet 3 and/or the surface 2 may be provided with projections extending towards the other to act as spacer means, and/or to limit approach¬ ing movement of the sheet 3 towards the surface 2. Figure 2 is a similar view of a structure in which the discrete sheet 3 is eliminated and is replace in function by the exposed upper face portion 6 of a layer 7 of resiliently compressible material, e.g. a layer of a cellular material.
Figure 3 is a similar view of a structure in which the components of the touch element are the same as in Figure 1, but with the addition of a lower bounding sheet 8 for the zone 4. This provision enables the assembly of sheet 3 and sheet 8, with an intermediate zone 4 of gas, liquid, solid or cellular material, to be manufactured as a separate entity which can be applied to a switch 1.
Referring now to Figure 4 there is shown a combination of touch element with switch means of the shiftable type. It suffices to state that the switch 9 is actuated by movement, with the finger-tip, of an element 10 of the switch in the direction of the arrow "A", with respect to the remainder of the switch 9. The element 10 is physically connected to the remainder of the switch, and is situated beneath a finger-contact sheet 11 which is spaced above the switch 9 by a zone 12 having any of the characteristics described above for the zone 4 of Figures 1-3. In a modification, the discrete finger-contact sheet 11 may be eliminated in the manner described for Figure 2. In another
OM modification, there may be added a lower bounding sheet in the manner described in relation to Figure 3.
Figure 5 shows a construction which is similar to that of Figure 4, and to which the same character- istics and modifications may be applied, but wherein the shiftable switch element 10a_ is normally flush with, or below, the upper surface of the switch 9.
Figure 6 shows a construction which is similar to that of Figure 4, and to which the same character- istics and modifications may be applied, but wherein the shiftable switch element 10b is carried at the underside of the finger-contact sheet 11 or its equi¬ valent.
The sheet 3 or 11, or the exposed upper face of the material of zone 4 or 12, may be in plate or strip form, and marked with switch indications or left unmarked, and may be physically modified at areas to indicate where finger-tip contact is desired, e.g. provided with raised or depressed areas to assist in seeing, and finding with the finger-tip, the required switch location.
With the improvement of the present invention, the desired "touch", involving extent of movement for switch operation and the desired resistance to finger- tip movement, may be imparted to the switch means irrespective of the natural "touch", or lack of it, in the switch means as manufactured.

Claims

An electrical switch structure, for actuation with the finger-tips, comprising switch means having a surface towards which the finger-tip is moved to cause actuation, and a touch element overlying that surface and presenting an exposed face for contacting with the finger-tip, the touch element having between that face and that surface a zone which provides resilient resistance to movement of that face towards that surface.
2. An electrical switch structure, as claimed in Claim 1, wherein the exposed face of the touch element is on a finger-contact sheet which is discrete from the resistance zone.
3. An electrical switch structure, as claimed in either of Claims 1 and 2, further comprising a bounding layer disposed between the resistance zone and the surface of the switch means.
4. An electrical switch structure, as claimed in either of Claims 2 and 3, wherein the resistance zone includes or consists of gas, liquid, resilient solid or resilient cellular material, or any combination thereof.
5. An electrical switch structure, as claimed in Claim 1, wherein the resistance zone includes or
' consists of resilient solid or resilient cellular material.
6. An electrical switch structure, as claimed in any one of Claims 1 to 5, wherein the switch means is non-shiftable, as herein defined.
7. An electrical switch structure, as claimed in any one of Claims 1 to 5, wherein the switch means is shiftable, as herein defined.
8. An electrical switch structure substantially as described herein with reference to any one of Figures
1 to 3 of the accompanying drawings.
9. An electrical switch structure substantially as described herein with reference to any one of Figures
4. to 6 of the accompanying drawings.
PCT/GB1980/000141 1979-09-12 1980-09-12 Switch structure with touch element WO1981000787A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8080901665T DE3070065D1 (en) 1979-09-12 1980-09-12 Switch structure with touch element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7931627 1979-09-12
GB7931627 1979-09-12

Publications (1)

Publication Number Publication Date
WO1981000787A1 true WO1981000787A1 (en) 1981-03-19

Family

ID=10507776

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1980/000141 WO1981000787A1 (en) 1979-09-12 1980-09-12 Switch structure with touch element

Country Status (6)

Country Link
EP (1) EP0042381B1 (en)
JP (1) JPS56501142A (en)
AT (1) ATE11612T1 (en)
DE (1) DE3070065D1 (en)
GB (1) GB2081456B (en)
WO (1) WO1981000787A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201259A2 (en) * 1985-04-29 1986-11-12 A & K MACFARLANE PTY. LIMITED Variable keystroke pressure apparatus
US4990900A (en) * 1987-10-01 1991-02-05 Alps Electric Co., Ltd. Touch panel
US5089671A (en) * 1989-12-15 1992-02-18 Val Ranetkins Underwater zoom switch
WO1992004724A1 (en) * 1990-08-30 1992-03-19 Platz Karl Otto Pressure switch
EP0952599A2 (en) * 1998-04-20 1999-10-27 Company for Technology Transfer and Patents Sark-Kistner Push button switch
EP1429355A1 (en) * 2002-12-09 2004-06-16 IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A. Foil-type switching element
US7543510B2 (en) 2002-12-09 2009-06-09 Ike International Electronics & Engineering S.A. Foil-type switching element with multi-layered carrier foil

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1178607A (en) * 1966-04-26 1970-01-21 Ibm Pressure Operated Electric Switch Unit
US3503031A (en) * 1969-02-11 1970-03-24 Control Data Corp Printed circuit keyboard
US4017848A (en) * 1975-05-19 1977-04-12 Rockwell International Corporation Transparent keyboard switch and array
US4024368A (en) * 1975-10-02 1977-05-17 Litton Systems, Inc. Switch assembly having selective actuation sensitivity
US4046975A (en) * 1975-09-22 1977-09-06 Chomerics, Inc. Keyboard switch assembly having internal gas passages preformed in spacer member
GB2000375A (en) * 1977-06-24 1979-01-04 Cornelius Co Touch switch and flexible contact therefor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1178607A (en) * 1966-04-26 1970-01-21 Ibm Pressure Operated Electric Switch Unit
US3503031A (en) * 1969-02-11 1970-03-24 Control Data Corp Printed circuit keyboard
US4017848A (en) * 1975-05-19 1977-04-12 Rockwell International Corporation Transparent keyboard switch and array
US4046975A (en) * 1975-09-22 1977-09-06 Chomerics, Inc. Keyboard switch assembly having internal gas passages preformed in spacer member
US4024368A (en) * 1975-10-02 1977-05-17 Litton Systems, Inc. Switch assembly having selective actuation sensitivity
GB2000375A (en) * 1977-06-24 1979-01-04 Cornelius Co Touch switch and flexible contact therefor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IBM Technical Disclosure Bulletin, Vol. 18, No. 10, issued March 1976 (Armonk, New York, US), R.J. WOLFROM: "Adjustable Key Force Control", see pages 3388 and 3389 *
IBM Technical Disclosure Bulletin, Vol. 19, No. 6, issued 1967 November (Armonk, New York, US), A. CASWELL et al.: "Bounceless Multiple Contact Switch" see pages 699 and 700 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201259A2 (en) * 1985-04-29 1986-11-12 A & K MACFARLANE PTY. LIMITED Variable keystroke pressure apparatus
EP0201259A3 (en) * 1985-04-29 1989-05-24 A & K MACFARLANE PTY. LIMITED Variable keystroke pressure apparatus
US4990900A (en) * 1987-10-01 1991-02-05 Alps Electric Co., Ltd. Touch panel
US5089671A (en) * 1989-12-15 1992-02-18 Val Ranetkins Underwater zoom switch
WO1992004724A1 (en) * 1990-08-30 1992-03-19 Platz Karl Otto Pressure switch
EP0952599A2 (en) * 1998-04-20 1999-10-27 Company for Technology Transfer and Patents Sark-Kistner Push button switch
EP0952599A3 (en) * 1998-04-20 2000-01-19 Company for Technology Transfer and Patents Sark-Kistner Push button switch
EP1429355A1 (en) * 2002-12-09 2004-06-16 IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A. Foil-type switching element
WO2004053906A1 (en) * 2002-12-09 2004-06-24 Iee International Electronics & Engineering S.A. Foil-type switching element
US7543510B2 (en) 2002-12-09 2009-06-09 Ike International Electronics & Engineering S.A. Foil-type switching element with multi-layered carrier foil

Also Published As

Publication number Publication date
ATE11612T1 (en) 1985-02-15
GB2081456B (en) 1984-07-25
EP0042381A1 (en) 1981-12-30
JPS56501142A (en) 1981-08-13
GB2081456A (en) 1982-02-17
EP0042381B1 (en) 1985-01-30
DE3070065D1 (en) 1985-03-14

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