EP0123184B1 - Disposition de clavier - Google Patents

Disposition de clavier Download PDF

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Publication number
EP0123184B1
EP0123184B1 EP84103841A EP84103841A EP0123184B1 EP 0123184 B1 EP0123184 B1 EP 0123184B1 EP 84103841 A EP84103841 A EP 84103841A EP 84103841 A EP84103841 A EP 84103841A EP 0123184 B1 EP0123184 B1 EP 0123184B1
Authority
EP
European Patent Office
Prior art keywords
key
mat
arrangement according
region
keyboard
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.)
Expired - Lifetime
Application number
EP84103841A
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German (de)
English (en)
Other versions
EP0123184A2 (fr
EP0123184A3 (en
Inventor
Alain M. Bebié
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.)
Bebie+co
Original Assignee
Bebie+co
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Filing date
Publication date
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Priority to AT84103841T priority Critical patent/ATE51107T1/de
Publication of EP0123184A2 publication Critical patent/EP0123184A2/fr
Publication of EP0123184A3 publication Critical patent/EP0123184A3/de
Application granted granted Critical
Publication of EP0123184B1 publication Critical patent/EP0123184B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01H13/78—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 characterised by the contacts or the contact sites
    • H01H13/807—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 characterised by the contacts or the contact sites characterised by the spatial arrangement of the contact sites, e.g. superimposed sites
    • 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
    • H01H13/702—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • 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
    • H01H13/78—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 characterised by the contacts or the contact sites
    • H01H13/80—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 characterised by the contacts or the contact sites characterised by the manner of cooperation of the contacts, e.g. with both contacts movable or with bounceless contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/006—Contacts self-aligning
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/02—Interspersed fingers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/014—Layers composed of different layers; Lubricant in between
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2213/00—Venting
    • H01H2213/01—Venting with internal pressure of other switch sites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/008—Part of substrate or membrane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/006—Different feeling for different switch sites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/002—Legends replaceable; adaptable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/002—Legends replaceable; adaptable
    • H01H2219/026—Legends replaceable; adaptable with programming switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements
    • H01H2219/04—Attachments; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/002—Actuators integral with membrane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/008—Actuators other then push button
    • H01H2221/012—Joy stick type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/008—Actuators other then push button
    • H01H2221/016—Lever; Rocker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/024—Transmission element
    • H01H2221/026—Guiding or lubricating nylon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/046—Actuators bistable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/056—Modular conception
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/066—Actuators replaceable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/002—Casings sealed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2225/00—Switch site location
    • H01H2225/002—Switch site location superimposed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/042—Snap coupling; Snap mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/022—Miscellaneous with opto-electronic switch

Definitions

  • the present invention relates to a keyboard arrangement according to the preambles of claims 1 and 2, respectively.
  • a keyboard arrangement is known from DE-OS 2 540 011, in which a rubber-elastic mat has upstanding key areas that can be moved with respect to the carrier arrangement within the framework of the inherent elasticity of the mat areas surrounding the key areas, the key areas being operatively connected to switching elements for signal paths on the carrier arrangement side.
  • the carrier arrangement is designed such that it covers the mat, viewed from the operator side, to such an extent that only the key areas of the mat are accessible.
  • the mat is basically clamped between a first part of the carrier arrangement with the mentioned switching elements and a cover as a second part, with the corresponding openings for the key area access.
  • this arrangement has the disadvantage that cavities are created between the cover with the corresponding openings for access to the key areas and the rubber-elastic mat, which are undesirable with regard to dirt accumulation and corresponding cleanability.
  • the key areas can be moved linearly or tilting, depending on the stress during their operation, which, since only the first-mentioned movement causes reliable switching operations, leads to this uncertainty.
  • a keyboard arrangement of the type mentioned at the outset is known from US Pat. No. 4,289,940. Because the keyboard arrangement made known here is constructed essentially the same as that known from DE-OS 2 540 011, but the rubber-elastic mat covers the carrier arrangement in a sealing manner, the mentioned disadvantage with regard to dirt accumulation and cleanability is eliminated here. However, since, according to US Pat. No. 4,289,940, the key areas can be moved differently depending on their stress when they are operated, the mentioned disadvantage with regard to switching reliability also remains here.
  • the aim of the present invention is to remedy this disadvantage with such a keyboard arrangement of the type mentioned at the beginning.
  • the key areas are held at least in sections by exposed spring areas of the mat that are dimensioned thinner than the key areas.
  • At least one switch part for signal routing is attached to each key area.
  • the key areas with the switching-active parts arranged thereon act as parts of the switching elements provided.
  • the switch part be made of a conductive plastic, such as conductive silicon rubber.
  • the mat and the switch part are made from the same base material and the switch part is treated for electrical conduction.
  • the key areas in the mat cross section protrude onto the mat side facing away from the support arrangement, i.e. to the actuation side of the mat, either by projecting the key areas with respect to the axis perpendicular to the mat coaxial, basically cylindrical or truncated cone-shaped, or by continuously or kinking on one side from the support areas inclined, i.e. protrude obliquely to said matt vertical axes.
  • the spring area mat parts are oriented in at least one component in the actuation direction with respect to an intended key area actuation direction, viewed in the mat cross-sectional direction.
  • the actuating force lies at least in one component in the direction of the spring area connecting the button area and the surrounding contact area, so that it stresses the spring area part made of rubber-elastic material not only as a bending force but, and in particular, as a compression force , with which the above-defined, desired actuation force / actuation path is realized.
  • the spring area mat sections can preferably be viewed in the direction of the cross section of the mat and, when the button area is at rest, evenly and inclinedly connect the button areas with the support areas, or can be used for the amplifier kung of the snap effect defined above be concave towards the back of the mat.
  • the spring area mat parts are prestressed in the key area rest position by prestressing elements on the support arrangement.
  • the key areas are to be actuatable primarily in the direction of a mat perpendicular, or if they tip over in at least two directions in this regard, it is proposed that the spring area mat parts completely surround the button area.
  • a keyboard arrangement is designed in such a way that the key areas are bent or continuously stand out from the support areas, practically hill-like, it is proposed that the spring area mat part only partially enclose the key areas.
  • the key areas on the bottom i.e. on the side opposite to the operating side, guide formations and / or indentations, and guide surfaces assigned to the carrier arrangement.
  • the key areas on the underside preferably have piston-like guide extensions, at most with a central bore, the carrier arrangement having associated cylinder guides and / or at most piston guides.
  • This arrangement ensures that the key area is coaxial with respect to the axes perpendicular to the mat, even if the spring area mat parts surrounding the key area themselves allow the key areas to tilt laterally when they are actuated.
  • the key areas or the support arrangement have piston-like formations and the support arrangement or the key areas have guide surfaces, end portions of the piston-like formations and an arched guide surface being designed in such a way that when the key area and support arrangement move relative, a lateral, sliding tilting of the piston-like formations takes place of at least two movement guides, maW a tilting of the key area to one side or the other, depending on the direction of action of the actuating force.
  • At least two switches with different switching directions are assigned to the key areas and the carrier arrangement, specific to the key area, the switching path length corresponding to the actuation path of the key area.
  • optionally formed contact carrier parts can be attached to the key areas of the carrier arrangement, detachable and pluggable.
  • the arrangement described has the great additional advantage that the mat can be exchanged in a very simple manner. If, for example, different work on the console is assigned to the individual keyboard fields on a computer operating console, so that other switching functions can also be triggered by one and the same key on the computer with the keyboard labeling, it can be extremely advantageous if the mat is attached their use can be recognized by a mat-specific switching code.
  • switch contacts which cannot be actuated by key areas are provided on the mat, via mat-specific contacting of the mating contact on the carrier arrangement.
  • the key areas are designed in a stick-like manner and can be tilted and provided on the support arrangement-side stick ends, further on the support arrangement key area-specific multiple counter contacts, selectively connectable by tilting the key area via the contact part, a two-coordinate switch is practically created with the above-mentioned mat and corresponding key areas Depending on the key range tilt direction, one or the other switching connections are created.
  • FIG. 1 Keyboard arrangements are known today, as shown for example in FIG. 1.
  • the arrangement comprises a profiled mat 1, made of rubber-elastic material with key areas 2 and support areas 3.
  • the mat 1 lies on a device-side support plate 4.
  • the profiling of the mat results in key areas 2 which project coaxially with respect to an axis A perpendicular to the mat , which are connected with bridge pieces 5 to the support areas 3.
  • This creates, assigned to each key area, a cavity 6 that can be compressed by actuating the key area, in which, on the carrier plate 4, electrical contacts 7 are arranged in interaction with contact areas 8 arranged on the key areas 2 coaxial movements, guided in a structure 9 of the carrier arrangement.
  • the structure 9 is provided with a perforation pattern and placed over the mat 1 such that the key areas 2 protrude through the perforations 10. In this way it is ensured that the key areas 2 are movable in particular coaxially to the axis A.
  • the cavities between the structure 9 and the mat 1 are susceptible to contamination and are difficult to clean.
  • FIG. 2 A further known embodiment variant, which has certain disadvantages, is shown in FIG. 2.
  • the arrangement here again consists of a mat 1a made of rubber-elastic material, with support areas 3a for resting on a carrier plate 4a and with key areas 2a for actuation.
  • the support areas 3a and the button areas 2a are connected by bridge parts 5a in such a way that cavities 6a are formed between the button areas 2a and the carrier plate 4a.
  • this arrangement does not have an actuation-side structure corresponding to 9 of FIG. 1, but the mat 1a is arranged directly on the carrier plate 4a.
  • the mat 1a covers the support plate 4a in a sealing manner and is accessible in its entirety for cleaning from the outside.
  • the mat 1a can further be replaced with little effort, since it can only be plugged onto the carrier plate 4a, for example by means of pins 9a. That the manufacturing effort and thus the cost of such an arrangement compared to that of Fig. 1 is cheaper. are taken for granted.
  • the arrangement according to FIG. 2 has the advantage that if certain contacts 7a provided on a standard carrier plate 4a are not required in a device version, this can be taken into account by the correspondingly assigned contact parts 2a, as shown in dashed lines at 5b shown, are provided as passive support areas.
  • a disadvantage of this arrangement is that, as shown in the left key area 2a, the degree of freedom of the key area operability is too great for some types of use in that the key areas are not only actuated coaxially to the mat perpendicular A, but can also be tilted by correspondingly oblique pressure , which can lead to unsafe contact between the contact parts 7a and 8a.
  • this possibility can be used in the arrangement according to the invention to selectively control several different switching functions with one key area by selective, lateral tilting.
  • the pistons 12 are guided axially in corresponding recesses in a guide structure 16 which also serves as a base for the mat 15.
  • the mat 15 is by means of tenons 18 attached to the management structure.
  • the slide bearings 19 formed by the guide structure 16 and the pistons 12 have little play and, with a corresponding shape, as shown at 19, the lowest possible friction between the key areas 11 and the guide structure 16 is ensured.
  • cavities 17 in which the guide pistons 12 move via key areas 11 must not be sealed from one another, since otherwise a pressure build-up arises when they are actuated. Passages 20 between these cavities 17 prevent this. The same result is achieved if not all support areas are tightly attached to the structure, so that the entire mat structure can absorb the resulting excess pressures.
  • the key areas 11 can have different shapes, particularly when viewed from above, and are usually labeled.
  • a clamping edge sealingly projecting beyond the mat 15 can be provided on a housing 21, if necessary with a sealing profile (not shown) on the mat edge or on the clamping edge. In this way, the mat 15 and the housing-side parts form a tight unit.
  • a piston-like continuation is again provided on the underside of a key area 23, but is not guided in a counter structure on its periphery, but in its axial center area.
  • the piston area 23, which is elongated in the manner of a piston is provided with a coaxially extending recess 24, into which a corresponding shape 25 projects on the carrier plate 14.
  • the entire mat structure with the guide pistons described here is formed in one piece. If, for example, transparent silicone rubber is used as the mat material, as shown in FIG.
  • the piston-like elongated key area 30 can be guided on the piston periphery and have a coaxial recess 32, in which an actuation-indicating signal lamp 34, such as a light-emitting diode, is arranged.
  • an actuation-indicating signal lamp 34 such as a light-emitting diode
  • knobs can also be provided for actuating membrane switches.
  • the keyboard mats described are fixed on their support from below. Your key areas are on the inside, i.e. the device side, so that no housing cover is necessary and the arrangement thus forms a hermetically sealed unit from the outside without cracks with the housing.
  • FIG. 6 shows a further exemplary embodiment of such an arrangement. It has key areas 41, extended in a piston-like manner for its guidance, with contact pills 43 which act on conductor tracks 44 of a carrier plate 45 designed as a printed circuit. The mat is fixed by means of plug-in pills 48 which are inserted into corresponding recesses in the guide structure 51 on the housing side.
  • the piston-like elongated key areas 41 are slidably guided in corresponding openings 49 of the guide structure 51 and, as has already been described, connecting openings 50 prevent the formation of excess pressure when the button area is actuated.
  • FIG. 7 An example of labeling of the key areas is shown in FIG. 7.
  • the mat In order to change this on a control panel as in accordance with a data input program to be changed, the mat can be replaced with very little effort in the arrangement described.
  • FIG. 8 shows a further exemplary embodiment of the arrangement according to the invention.
  • a covering mat 53 likewise made of rubber-elastic material, is placed over the mat 52, in its areas corresponding to the key area 54 is now labeled.
  • the covering mat 53 is either simply placed on the switching active mat 52 as a pure labeling mat or can act as a labeling-specific switching mat, as shown in FIG. 8.
  • the cover mat 53 has extensions 55 projecting downwards, with contacts 55a, cooperating with one or more conductor tracks on the carrier plate 14.
  • cover mats 53 for example labeled differently for different uses, the extensions 55 are provided at different locations are, for short-circuiting different conductor tracks on the carrier plate 14, it is achieved that different program sequences are controlled accordingly by placing different cover mats 53, for example in the case of computer operating consoles.
  • the cover mat 53 as shown in the edge areas, is also sealed with the actual switch mat underneath and the housing.
  • the cover mat-specific contacts 55a for example, a data processing system can recognize which type of cover mat 53 has been put on.
  • the cover mat 53 can also be held by snap-in knobs 57.
  • the mat-specific fixed switches 55, 55a shown with reference to FIG. 8 can of course also be provided directly on interchangeable mats, such as 15 from FIG. 3.
  • cover mat 53 As shown in Fig. 8 Darge the resulting increase in actuation pressure for the key areas must be taken into account.
  • the cover mat 53 can be kept at a distance from the actual switch mat 52, in particular in the bridge areas, forming cavities 58, which, however, is not absolutely necessary in accordance with the selected cover mat material and its dimensions.
  • buttons 9 show a further exemplary embodiment of the arrangement according to the invention.
  • a button-side contact 59 moves away from a printed circuit board 60, so that a contact interruption is triggered here by actuating the button area.
  • a contact 61 which closes when the key area is actuated can be provided.
  • FIG. 10 and 11 show further exemplary embodiments in which closing and interrupting contacts actuated by a key area are not actuated simultaneously, but successively during the key area movement.
  • a first normally closed contact 62 is opened immediately at the start of the key area actuation, after which a normally open contact 63 closes before finally another normally open contact 64 is closed.
  • the bottom of the key area consists of several plastic or rubber parts which can be plugged in and exchanged, for example, as shown with the parts BCD in FIG. 10.
  • FIG. 11 shows an example in which first make contacts 67 are closed before normally closed contacts 66 open.
  • a membrane profile 65 is prestressed such that the associated contact 66 does not open when the button area is actuated before the contact 67 has closed.
  • the membrane profile 65 of FIG. 11 can serve to reduce the necessary actuating force, the overhead profile 68 to increase the necessary force.
  • the actuation characteristics of these key areas can be changed in a variety of ways. If the provision of such resilient organs, as already stated, is carried out selectively for certain key areas by plug-in assembly of individual such organs, it can also be achieved that certain key areas are more difficult to actuate than others. This may be desirable for operational safety.
  • Contacts 70 arranged on the underside of the key area 69 are thereby separated by a conductive end 71 of the button area 69, e.g. made of conductive plastic, short-circuited.
  • the arrangement of the contacts 70 is shown in a top view in FIG. 12. It can be seen from this that, depending on the direction of inclination of the stick-like button area 69, the conductive part 71 selectively short-circuits contacts 70.
  • a guide template 72 is additionally provided.
  • FIG. Two or four switching positions with corresponding switching contacts 73 are provided on the carrier arrangement for each key area.
  • a contact pill 73a e.g. made of conductive plastic
  • the movement of the key area which is characteristic of this type of switching is also determined in part by the bridge part profiles 74. If only two switching movements are provided, the movement of the key area can also be specified with cams guided in scenes, as shown for example in FIG. 16.
  • the key area shown in FIG. 13 is tilted into one switching position, in FIG. 15 into the other.
  • FIG. 16 shows an exemplary embodiment in which the key area is tilted into one of the contact positions 76, similar to that shown in FIGS. 13 to 15.
  • the pushing movement of cams 77 under locking hooks 78 locks the button, as shown in FIGS. 17 and 18, in the selected, tilted position.
  • the locking mechanism is released again by the reverse sliding movement with a slight push on the button area.
  • 19 and 20 show examples in which the interlocking cams or ribs 79 prevent the key areas from being pulled out of the rest position.
  • cams 80 hold the key area in a position slightly below its actual rest position, so that the bridge profile 81 is already somewhat deformed and prestressed. In this way, the actuation characteristics of the key area can be influenced.
  • the shape of the bridge profile 81 shown in FIG. 21 can, however, also be provided during the manufacture of the mat.
  • the bridge areas connecting the key areas and support areas are designed as spring bridge mat areas, i.e. with the mat in one piece, designed and, viewed in the direction of the mat cross section, applied so that the actuating force in at least one component in the longitudinal direction of the bridge, i.e. upsetting, acts on it.
  • the switching-effective position which is denoted by S s in FIG. 22, is preferably provided immediately after passing through the maximum M or, as shown at S'g, in a minimum following the maximum M.
  • S s the direction of the actuating force
  • the direction of the actuating force is represented by K and in the spring bridge mat section 81 in particular the component K l acting in the longitudinal direction of the bridge section.
  • this component causes the actuation force increase shown in FIG. 22 with subsequent passage of the maximum force M.
  • the shape of the spring bridge mat sections 81 has a significant influence on the displacement path / force curve. For example, the pretension according to FIG. 21 or the corresponding shape during mat production.
  • FIG. 23 shows a square button area extension on the underside which runs in a round device-side guide cylinder, as was illustrated, for example, with reference to FIG. 3. This results in a small area of friction.
  • Additional guide rings 85 as shown in the exemplary embodiment according to FIG. 24, make it possible to further reduce the play between the extension of the key area on the carrier arrangement side and guides on the carrier arrangement, thereby increasing the slidability.
  • These guide rings 85 on the key region extension can have knob surfaces on their periphery or can also be angular in shape, in turn forming small friction surfaces on the guide cylinders.
  • these rings additionally prevent a key area from being pulled out.
  • a narrowing 86 in the key region extension on the carrier arrangement side results in a certain flexibility of bending of a contact part 88, so that this also adapts when the key region and / or the printed circuit board 89 carrying the counter contacts is inclined.
  • the contact area-side contact 90 is ring-shaped and made of soft material.
  • Contact tracks 91 on the circuit board form contact stars or concentric circles.
  • the contact arrangement 91a which is customary today on the printed circuit board would, depending on its position, not permit a safe short-circuit if the contact on the button area came into contact obliquely. Such a short circuit is ensured in any case with the star-shaped or ring-shaped conductor track arrangement.
  • On the left is a basic enlargement of a part of the contact star, which shows how the rays interlock radially, separately and are connected to the external and internal power supply.
  • the contact on the key area is pill-shaped.
  • the ring shape of this contact 90 shown in FIG. 26 is significant because such a ring can be deformed much more easily in the inclined position than a pill. This deformation means that the ring adapts to the area of the underlying circuit board, that the contact area is increased and the desired short circuit is ensured.
  • the flexibility of the contact ring 90 is further increased by the frustoconical shape of the button area underside 92 and the cavity 92a also provided there. 27 and 28 show further exemplary embodiments.
  • Known film switches form an electrical contact when an upper film is pressed onto a lower one.
  • a knob 93 or a pin 94 with a small diameter on the underside of a button area of the mat is advantageous for the actuation of such membrane switches, since this results in a reduction in the necessary actuation force compared to a larger actuation area.
  • 29 shows an exemplary embodiment of an optical switch in an optoelectric system.
  • Under the button area are light emitters 95 and detectors 96, e.g. placed in a matrix, so that pressing a button area causes the beam to be interrupted in the X and / or Y axis.
  • the key area extension can be provided with a cavity 97, so that this area is soft because the side wall bends around the cavity 97.
  • a key area here consists of a rigid zone 100 and the flexible, more flexible spring bridge parts 101.
  • Fig. 31 shows a sectional view through such a key area in the rest position, Fig. 32 in the actuated position.
  • Fig. 31 contacts are drawn, the example of a surface made of conductive silicone rubber 103 and contact tracks 104 on one Printed circuit board 105 shows. Another switching system can be used analogously.
  • pins or protruding ribs 106 are drawn in, which serve to fix the mat on its support.
  • the passage opening 107 serves to equalize the pressure when a key area is actuated.
  • FIG. 33 shows the side view of a mat with key areas designed in accordance with FIGS. 30 to 32. It goes without saying that the surfaces of the key areas can be labeled.
  • the key area 110 is supported on the carrier 114 with a relatively rigid tilting bearing section 112.
  • the spring section 116 is tensioned by tilting the button in the indicated direction so that the contact pill 118 closes the switching path underneath.
  • the spring section 120 is compressed and, by means of a snap effect, generates feedback to the operator that the switch has been carried out correctly.

Landscapes

  • Push-Button Switches (AREA)

Claims (28)

1. Clavier comprenant un tapis élastique comme du caoutchouc (15) qui recouvre de façon étanche un suppport (14), dans lequel des touches (11), qui sont mobiles dans les limites de l'élasticité propre du matériau de tapis qui les entoure, font saillie, ces touches (11) étant mobiles par rapport au support (14), les touches (11) étant reliées de façon opérationnelle à des organes de commutateur ou d'interrupteur (13) situés du côté du support pour des trajets de signal, caractérisé par le fait que des guides de mouvement (12, 16) entre le tapis (15) et le support (14) sont prévus de manière que la mobilité des touches soit limitée à un mouvement prédéterminé.
2. Clavier comprenant un tapis élastique comme du caoutchouc en une pièce qui recouvre un support (105) dans lequel au moins une touche fait saillie qui, dans les limites de l'élasticité propre du matériau du tapis entourant cette touche, est mobile par rapport au support (105), et dans lequel la touche est reliée de façon opérationnelle à un organe de commutateur ou d'interrupteur (103, 104) pour des trajets de signal situé de côté du support, caractérisé par le fait que le tapis, dans la zone de la touche, est profilé en une zone d'actionnement raide (100) et en une zone amincie d'articulation (102) autour de laquelle la zone d'actionnement (100) exécute un mouvement basculant univoque.
3. Clavier suivant la revendication 1 ou 2, caractérisé par le fait que les touches (11) sont tenues au moins en partie par des zones-ressort du tapis (15) plus minces que les touches (11) et libres.
4. Clavier suivant l'une des revendications 1 à 3, caractérisé par le fait qu'à chaque touche (11) est agencé au moins un des dits organes (13) pour un signal.
5. Clavier suivant la revendication 4, caractérisé par le fait que, pour les signaux électriques, ledit organe (13) est fait de matériau plastique conducteur comme de caoutchouc au silicone.
6. Clavier suivant la revendication 5, caractérisé par le fait que le tapis (15) et ledit organe (13) sont faits du même matériau de base, l'organe (13) étant traité pour être rendu conducteur.
7. Clavier suivant l'une des revendications 3 à 6, caractérisé par le fait que les zones-ressort du tapis de base (81) sont ainsi conformées que, lors de l'actionnement de touche (K) en direction du support en fonction de la course du mouvement d'actionnement(s), une pression maximum d'actionnement (M) est parcourue en déclic.
8. Clavier suivant l'une des revendications 1 à 7, caractérisé par le fait que, dans la direction de la section à travers du tapis, les touches (11) font saillie sur la face du tapis opposée au support.
9. Clavier suivant l'une des revendications 1 à 8, caractérisé par le fait que les touches (11) font saillie coaxialement relatif à des axes perpendiculaires au tapis.
10. Clavier suivant l'une des revendications 1 à 8, caractérisé par le fait que les touches (100) font saillie de façon inclinée par rapport à des axes perpendiculaires au tapis.
11. Clavier suivant l'une des revendications 3 à 10, caractérisé par le fait que les zones-ressort (81) du tapis par rapport à la direction d'actionnement des touches (K) considérée dans la direction de la section à travers du tapis sont orientées, au moins en une composante, dans la direction d'actionnement.
12. Clavier suivant l'une des revendications 3 à 11, caractérisé par le fait que les zones-ressort du tapis, en cas de non-actionnement de la touche (11), relient, de façon plane et inclinée, les touches (11) à des zones de support du tapis (15).
13. Clavier suivant l'une des revendications 3 à 11, caractérisé par le fait que les zones-ressort (81) du tapis sont, à l'état de repos des touches, concaves face au support.
14. Clavier suivant l'une des revendications 3 à 13, caractérisé par le fait que, pour influencer la pression d'actionnement caractéristique envers la course d'actionnement, les zones-ressort (81) du tapis, en position de repos des touches, sont prétendues par des organes de pré-tension (80) au support.
15. Clavier suivant la revendication 1 et l'une des revendications 3 à 14, caractérisé par le fait que les zones-ressort du tapis entourent entièrement les touches (11).
16. Clavier suivant la revendication 2 et l'une des revendications 3 à 14, caractérisé par le fait que les zones-ressort (101) du tapis entourent partiellement les touches (100).
17. Clavier suivant la revendication 1 et l'une des revendications 3 à 15, caractérisé par le fait que les touches (11, 23) présentent, sur leur face inférieure, des saillies (12) et/ou des creusures (24) de guidage, tournées vers des surfaces de guidage (16, 25) du support (14) qui y sont adaptées.
18. Clavier suivant la revendication 1 et l'une des revendications 3 à 15 et 17, caractérisé par le fait que les touches (11, 23) présentent, sur leur face inférieure, des saillies de guidage en forme de piston (12), éventuellement avec perçage central (24), alors que le support (14) présente des guides en forme de cylindre (16) et/ou respectivement des guides en forme de piston.
19. Clavier suivant la revendication 1 et l'une des revendications 3 à 15, 17 et 18, caractérisé par le fait que les touches et/ou le support présentent des saillies en forme de piston et par le fait que le support et/ou les touches présentent des surfaces de guidage, alors que les parties terminales (73a) d'une saillie en forme de piston et une surface de guidage cintrée (75) sont constituées de telle manière que, lors d'un mouvement relatif de touche et du support, un basculement latéral glissant de la saillie en formé de piston de produit dans l'un d'au moins deux guides de mouvement, au moins deux interrupteurs ou commutateurs ayant des directions de mouvement d'actionnement différentes étant raccordés à la touche et au support, les longueurs des courses d'actionnement des interrupteurs ou commutateurs correspondant à la course d'actionnement de la touche.
20. Clavier suivant l'une des revendications 1 à 15 et 17 à 19, caractérisé par le fait que, sur les touches et sur le support sont raccordés, spécifiquement aux touches, au moins deux interrupteurs ou commutateurs avec des courses d'actionnement différentes, la course d'actionnement correspondant à la source d'actionnement de la touche.
21. Clavier suivant l'une des revendications 1 à 20, caractérisé par le fait que des parties porte- contacts (B, C, D) peuvent être montées de façon amovible et face au support, telle qu'enfichable, sur la partie de la touche.
22. Clavier suivant l'une des revendications 1 à 21, caractérisé par le fait que des contacts d'interrupteur ou de commutateur (55a) non-actionnables par les touches sont prévus sur le tapis (53) pour l'actionnement statique de fonctions spécifiques au tapis.
23. Clavier suivant l'une des revendications 1 à 22, caractérisé par le fait que les touches sont en forme de 'plots de commande (69) en saillie et basculables, par le fait qu'à l'extrémité de ces plots tournée du côté du support au moins un contact (71) et sur le support plusieurs contre- contacts (70) sont prévus, qui, par un basculement sélectif des touches, sont reliables sélectivement au contact (71).
24. Clavier suivant l'une des revendications 1 à 23, caractérisé par le fait que les contacts des touches sont élastiques.
25. Clavier suivant l'une des revendications 1 à 24, caractérisé par le fait que des contacts sur les touches sont constitués par des anneaux coaxiaux à des axes perpendiculaires au tapis.
26. Clavier suivant l'une des revendications 1 à 25, caractérisé par le fait que des contacts du support sont en forme d'étoiles.
27. Clavier suivant l'une des revendications 1 à 26, caractérisé par le fait que les touches sont maintenues de façon relâchable en position de fonctionnement.
28. Clavier suivant la revendication 2 et l'une des revendications 3,14,16 et 20 à 27, caractérisé par le fait qu'entre touche (110) et support (114) une partie support (112) ponctuelle ou linéaire, excentrique par rapport à l'axe central de touche, constitue un palier de basculement pour la touche (110).
EP84103841A 1983-04-20 1984-04-06 Disposition de clavier Expired - Lifetime EP0123184B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84103841T ATE51107T1 (de) 1983-04-20 1984-04-06 Tastaturanordnung.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CH210583 1983-04-20
CH2105/83 1983-04-20
CH5521/83 1983-10-11
CH552183 1983-10-11
CH6100/83 1983-11-14
CH610083 1983-11-14

Publications (3)

Publication Number Publication Date
EP0123184A2 EP0123184A2 (fr) 1984-10-31
EP0123184A3 EP0123184A3 (en) 1986-10-01
EP0123184B1 true EP0123184B1 (fr) 1990-03-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP84103841A Expired - Lifetime EP0123184B1 (fr) 1983-04-20 1984-04-06 Disposition de clavier

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US (1) US4536625A (fr)
EP (1) EP0123184B1 (fr)
DE (1) DE3481670D1 (fr)

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Also Published As

Publication number Publication date
DE3481670D1 (de) 1990-04-19
US4536625A (en) 1985-08-20
EP0123184A2 (fr) 1984-10-31
EP0123184A3 (en) 1986-10-01

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