EP2342728B1 - Tastatur mit weitem tastenabstand und verbessertem berührungsgefühl - Google Patents

Tastatur mit weitem tastenabstand und verbessertem berührungsgefühl Download PDF

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Publication number
EP2342728B1
EP2342728B1 EP09823100.4A EP09823100A EP2342728B1 EP 2342728 B1 EP2342728 B1 EP 2342728B1 EP 09823100 A EP09823100 A EP 09823100A EP 2342728 B1 EP2342728 B1 EP 2342728B1
Authority
EP
European Patent Office
Prior art keywords
key
plunger
stiffness
switch
recess
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.)
Not-in-force
Application number
EP09823100.4A
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English (en)
French (fr)
Other versions
EP2342728A1 (de
Inventor
Jean-Louis Bigand
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.)
Thales SA
Original Assignee
Thales SA
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 Thales SA filed Critical Thales SA
Publication of EP2342728A1 publication Critical patent/EP2342728A1/de
Application granted granted Critical
Publication of EP2342728B1 publication Critical patent/EP2342728B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • 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
    • H01H13/84—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 ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback
    • 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
    • H01H13/84—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 ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback
    • H01H13/85—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 ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback characterised by tactile feedback features
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/002—Longer travel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/036—Return force
    • H01H2221/044—Elastic part on actuator or casing

Definitions

  • the invention relates to a keyboard comprising at least one push switch and a key for operating the switch. It relates to taking into account geometric dispersions of the keyboard, lengthening the stroke of the key and improving the tactile sensation when pressing the key to operate the switch.
  • the invention finds particular, but not exclusive, utility in a dashboard of an aircraft.
  • a keypad When it is intended for a dashboard of an aircraft, but also for other areas, a keypad must meet a number of constraints, in particular dimensional constraints.
  • a first constraint is the tolerance on the key override. The difference in height between the upper surface of the key and the fixed surface of the keyboard is called the key overhang. This tolerance is generally low, of the order of two to three tenths of a millimeter.
  • a second constraint relates to the stroke of the key. This race must generally be between seven and ten tenths of a millimeter depending on the application.
  • a third constraint relates to the effort to be applied to a key in order to actuate the switch. The effort is for example five or six newtons with a tolerance around a newton.
  • a fourth constraint may also relate to the switch maneuverability, that is to say the tactile sensation provided at the touch of a key. This sensation is notably related to the resistance opposed by the key when it is stressed and the resistance break observed when the switch goes from the open state to the closed state. This feeling is important to ensure reliable feedback to the operator operating the key.
  • the keyboard then comprises at least one front face, a printed circuit forming a support and a diffuser interposed between the front face and the printed circuit.
  • the keyboard may further include sealing elements between the fixed part and the movable part, that is to say the key or keys.
  • the assembly of the different parts of the keyboard causes a geometric dispersion generally of the same order of magnitude as the stroke of the key and the tolerance on exceeding the key.
  • the geometric dispersion is usually between six and ten tenths of a millimeter depending on the tolerances of the parts and the care taken in mounting the keyboard.
  • JP-A-1264125 An example of a keyboard with a long stroke of keys is described in JP-A-1264125 .
  • the push switches have insufficient travel to achieve the minimum stroke required for the key.
  • the stroke of a dome switch is rarely more than three tenths of a millimeter. Even for a switch incorporating elastomers, the stroke is generally less than seven tenths of a millimeter. Therefore, it is generally not possible to make a rigid connection between the key and the moving part of the switch.
  • the figure 1 illustrates a first embodiment of a keyboard in a sectional view of a portion of the keyboard in a plane passing through a key.
  • the keyboard comprises a printed circuit 10 forming a support, a front face 11 fixedly secured to the printed circuit 10 by means of a plate 12 and a push-button switch 13 mounted on the printed circuit board 10.
  • the pushbutton switch 13 is for example a switch of the type called "dome” or "blistering", that is to say where the switching is effected by deflection of a conductive elastic blister dome against two conductors to connect. This type of switch is known in the Anglo-Saxon literature as the "dome switch”.
  • the front face 11 and the plate 12 comprise an opening 14 allowing a key 15 to translate along an axis X and to operate the switch 13.
  • the tolerance of greater than 16 key 15 is guaranteed by a plating of the key 15 against the front face 11.
  • This plating can be achieved by a spring 17 prestressed between the key 15 and the assembly consisting of the printed circuit 10, the front face 11 and the plate 12.
  • the spring 17 can rely on a internal flange 18 made on the plate 12.
  • the stroke of the key 15 may be limited on the opposite side to the switch 13 by the support of a shoulder 20 made on the key 15 against the bottom of a countersink 19 made on the front face 11.
  • the minimum stroke of the key can in turn be guaranteed by the existence of a clearance 21 between the lower end 151 of the key 15 and the switch 13.
  • the figure 2 represents in the form of a graph the evolution of a force applied to the key 15 as a function of a stroke of this key 15 for the first exemplary embodiment.
  • the key 15 moves along the X axis, the origin O of the race being determined by the rest position, that is to say when the key is not stressed and that it is pressed against the bottom of the countersink 19. It is also considered that the force is applied to the key 15 along the X axis towards the switch 13.
  • the evolution of the force as a function of the stroke is represented by a curve 24.
  • a first portion 241 of this curve 24 is represented by a positive slope line.
  • This portion 241 corresponds to the biasing of the spring 17 alone, the slope of the straight line corresponding to the stiffness of the spring 17. Beyond a race point C 1 , the lower end 151 of the key 15 comes into contact with the moving part of the switch 13. The stiffness of the switch 13 is then added to the stiffness of the spring 17. On the graph, the accumulation of the stiffness of the spring 17 and the switch 13 results in a second part 242 of curve 24 represented by a line of steeper slope and therefore by a discontinuity of the variation of the force for the stroke point C 1 .
  • a third portion 243 of the curve 24 may be represented by a convex curve portion. This part 243 corresponds to the beginning of the deflection of the switch 13 and includes the point of maximum effort F max that can be applied to the key 15 before the switch 13 establishes an electrical contact. This maximum effort F max occurs for a race point C 2 .
  • a fourth portion 244 of the curve 24 may be represented by a portion of concave curve, the force falling abruptly after the crossing of the travel point C 2 . This portion 244 corresponds to the further deflection of the switch 13.
  • the figure 3 illustrates a second example envisaged by the applicant for the realization of a keyboard in a sectional view similar to the figure 1 .
  • the tolerance of greater than 16 of key 15 is also guaranteed by a plating of the key 15 against the front face 11.
  • the plating is carried out by a deformable element, called plunger 31, prestressed between the lower end 151 of the key 15 and the switch 13.
  • the plunger 31 consists for example of a cylinder of revolution.
  • the figure 4 represents in the form of a graph similar to the figure 2 , the evolution of the force applied to the key 15 as a function of its stroke for the second embodiment.
  • a first curve 41 represents the evolution of the force for a plunger 31 with low stiffness and a second curve 42 represents the evolution of the effort for a plunger 31 with greater stiffness.
  • the race points C 2 and C 4 defined above are considered identical for the two curves 41 and 42.
  • the running point C 3 is marked C 31 for the curve 41 and C 32 for the curve 42.
  • second embodiment eliminates the clearance 21 between the lower end 151 of the key 15 and the switch 13. As a result, there is no break in stiffness when actuating the key 15 between the origin O and the race point C 2 .
  • this second embodiment allows to a certain extent to lengthen the race of the key 15 and absorb the geometric dispersions of the assembly.
  • the lengthening of the stroke of the key 15 and the absorption capacity of the dispersions are favored by a low stiffness of the plunger 31, which then easily deforms between the key 15 and the switch 13.
  • a plunger 31 with a low stiffness has a less good tactile sensation.
  • the tactile sensation associated with the transition of the switch 13 from the open position to the closed position can be represented by the ratio R between the force difference ⁇ F between the minimum forces F min and maximum F max and the travel difference ⁇ C between race points C 2 and C 3 .
  • the travel difference ⁇ C 1 between the race points C 2 and C 31 is greater than the travel difference ⁇ C 2 between the travel points C 2 and C 32 .
  • This phenomenon is related to a faster return of the energy stored in a plunger 31 with high stiffness than in a plunger 31 low stiffness.
  • the switch 13 may not be operated with a plunger 31 low stiffness. Indeed, the plunger 31 may deform in flexion and store energy without being able to restore it along the X axis to activate the switch 13.
  • this second embodiment a compromise must be found on the stiffness of the plunger 31 to, on the one hand, have a sufficient capacity for elongation and absorption of the dispersions and, on the other hand, to guarantee the activation of the switch 13 when pressing off-center on the key 15.
  • this second example of embodiment is especially adapted to a weak lengthening the travel of the switch 13 and requires an adaptation of the length of each plunger 31 to the geometric dispersions of the keyboard at each key 15.
  • the individual adjustment of the lengths of plungers 31 is obviously expensive and makes this implementation inappropriate to a mass production of keyboards.
  • An object of the invention is in particular to overcome the aforementioned drawbacks by providing a simple keyboard whose keys 15 have a long stroke and a good tactile sensation.
  • the subject of the invention is a keyboard comprising a push-button switch, a button for operating the push-button switch along a translation axis and a plunger interposed between the button and the switch.
  • a stiffness of the plunger along the translation axis increases continuously with an increase in the compression of the plunger.
  • the invention has the particular advantage that it allows to combine the advantages of a keyboard with a low stiffness plunger with those of a keyboard with a high stiffness plunger for low production cost.
  • the figure 5 represents an exemplary embodiment of a keyboard according to the invention in a sectional view similar to figures 1 and 3 .
  • the keyboard according to the invention is similar to the second embodiment, the main difference relating to the plunger 31.
  • the stiffness of the plunger 31 along the X axis increases continuously when pressing the front button 15 the actuation of the switch 13. In other words, the stiffness of the plunger 31 increases with an increase in its compression for a stroke of the key 15 preceding the actuation of the switch 13.
  • the stiffness of the plunger 31 increases continuously until reaching a given compression point, the stiffness remaining constant beyond this point of compression.
  • the plunger 31 is for example made of a single piece of homogeneous material.
  • the plunger 31 can thus be produced by molding in a very economical manner.
  • the material is advantageously an elastomer such as silicone.
  • the hardness of the The elastomer may be between 60 and 80 Shore A. It is for example 70 Shore A.
  • the present description relates to a keyboard with a single key 15.
  • the keyboard may comprise several keys 15 and, in particular, a plunger 31 as described above for each key 15 of the keyboard.
  • the figure 6 represents, in the form of a graph similar to the graphs of figures 2 and 4 , the evolution of the effort applied on a key 15 of the keyboard of the figure 5 according to the stroke of this key 15 for the first embodiment of the invention.
  • the evolution of the force is represented by a curve 61.
  • the plunger 31 is prestressed between the lower end 151 of the key 15 and the switch 13, the ordinate to the origin F 0 of the curve 61 being greater than zero. It is also possible to see that, on a first portion 611 of the curve 61, the stiffness of the key 15, represented by the slope of the curve 61, increases progressively without discontinuity.
  • the difference in stroke ⁇ C between the race points C 2 and C 3 is of the same order of magnitude as the difference in stroke ⁇ C 2 observed for a plunger 31 with high stiffness. This phenomenon is explained by the fact that, just before the deflection of the switch 13, the plunger 31 is strongly compressed and is thus characterized by a high stiffness. Therefore, the ratio R is important and the key 15 has a good tactile sensation.
  • the plunger 31 has two distinct constant stiffnesses.
  • it has a low stiffness k 1 at the beginning of compression and stiffness stronger k 2 at the end of compression.
  • the low stiffness k 1 allows, by its high deformation capacity, to absorb the geometric dispersions and lengthen the stroke of the key, and the high stiffness k 2 provides a good tactile sensation.
  • a plunger 31 whose stiffness increases with its compression can in particular be achieved by a suitable form of the plunger 31.
  • the plunger 31 comprises a recess 63, as shown in FIG. figure 5 .
  • This recess 63 defines an upper portion 31a of the plunger 31 and a lower portion 31b of the plunger 31, the upper portion 31a corresponding to the portion of the plunger 31 comprising the recess.
  • the plunger 31 and / or the recess 63 may be of revolution along the axis X.
  • the plunger 31 and / or the recess 63 are cylindrical.
  • the recess 63 is used to fix the plunger 31 to the key 15.
  • the key 15 then comprises a lug 152 whose shape is complementary to that of an upper portion 63a of the recess 63.
  • the plunger 31 is fitted on the lug 152 and is held there by elastic deformation.
  • the relative heights of the lug 152 and the recess 63 along the X axis are determined so as to leave a gap 63b between the lug 152 and the bottom of the recess 63.
  • the height of this empty space 63b is for example between five and fifteen tenths of a millimeter for a total height of the plunger 31 for example between three and four millimeters.
  • the height of the void space 63b is determined by a calculation of the average geometric dispersion of the keyboard assembly and the knowledge of the key stroke required. It is the presence of the empty space 63 which makes it possible to modify the stiffness of the plunger 31 with its compression.
  • the figure 7 represents, in the form of a graph similar to the graphs of figures 2 , 4 and 6 , the evolution of the effort applied on a key of the keyboard of the figure 5 according to its stroke for the second embodiment of the invention.
  • the evolution of the force is represented by a curve 71.
  • the upper part 31a of the plunger 31 bears the major part of the deformation of the plunger 31.
  • This upper part 31a indeed has an initial stiffness k 1 less than a stiffness k 2 of the lower part 31 b.
  • the pin 152 between in contact with the bottom of the recess 63.
  • the Figures 8A, 8B and 8C illustrate exemplary key and plunger configurations according to the second embodiment and wherein the transition between the two stiffnesses k 1 and k 2 is smoothed.
  • the lug 152 of the key 15 has a convex shape coming into contact with the bottom of the recess 63.
  • the bottom of the recess 63 is flat.
  • a second configuration example, represented on the Figure 8B it is the bottom of the recess 63 of the plunger 31 which has a convex shape, the part of the lug 152 coming into contact with the bottom of the recess 63 having a flat shape.
  • both the lug 152 and the bottom of the recess 63 have a convex shape.
  • the smoothing of the transition between the two stiffnesses k 1 and k 2 is ensured by a curved shape.
  • any form ensuring a gradual increase in the contact surface between the key 15 and the bottom of the recess 63 may be made within the scope of the invention.
  • the figure 9 represents, in the form of a graph similar to the graphs of figures 2 , 4 , 6 and 7 , the evolution of the force applied on a key of the keyboard according to its course according to the examples of configuration of the Figures 8A, 8B, 8C .
  • the evolution of the force is represented by a curve 91.
  • the curve 91 is essentially distinguished in that it comprises a portion of curve 92 connecting the first segment 711 of slope k 1 to the second segment 712 of slope k 2 in the vicinity of the race point C 1 .
  • the plunger 31 according to the invention can be elastically deformed substantially in its upper part 31a. It thus allows a long stroke of touch and a great capacity of absorption of the dispersions of the keyboard. In this case, it is not necessary to adapt the length of the various plungers 31 to the geometric dispersions of the keyboard at each key 15.
  • the plungers 31 may have standard dimensions.
  • the plunger 31 also has a high stiffness in its lower portion 31b. It offers a good tactile sensation.

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  • Push-Button Switches (AREA)

Claims (12)

  1. Tastatur, die Folgendes umfasst: einen Druckschalter (13), eine Taste (15), mit der der Druckschalter (13) entlang einer Translationsachse (X) bewegt werden kann, und einen Stößel (31) zwischen der Taste (15) und dem Schalter (13), wobei eine Steifigkeit des Stößels (31) entlang der Translationsachse (X) über den Weg der Taste (15) vor dem Aktivieren des Schalters (13) zunimmt, wobei der Stößel (31) eine Aussparung (63) aufweist, dadurch gekennzeichnet, dass ein die Aussparung (63) aufweisender Teil des Stößels (31) einen oberen Teil (31a) des Stößels mit einer ersten Steifigkeit (k1) definiert und ein restlicher Teil des Stößels (31) einen unteren Teil (31b) des Stößels mit einer zweiten Steifigkeit (k2) am Ausgangspunkt des Wegs der Taste (15) definiert, wobei die zweite Steifigkeit (k2) höher ist als die erste Steifigkeit (k1), wobei der Stößel (31) am oberen Teil (31a) des Stößels und jenseits eines Punkts des Wegs (C1), an dem die Taste (15) mit dem Grund der Aussparung (63) in Kontakt kommt, im Wesentlichen verformt wird, wobei der Stößel (31) am unteren Teil (31b) des Stößels (31) im Wesentlichen verformt wird, wobei die Steifigkeit des Stößels (31) somit von der ersten zur zweiten Steifigkeit zunimmt.
  2. Tastatur nach Anspruch 1, dadurch gekennzeichnet, dass die erste und die zweite Steifigkeit (k1, k2) im Wesentlichen konstant sind.
  3. Tastatur nach Anspruch 2, dadurch gekennzeichnet, dass sie Mittel zum Gewährleisten eines progressiven Übergangs zwischen der ersten Steifigkeit (k1) und der zweiten Steifigkeit (k2) über den Weg der Taste (15) umfasst.
  4. Tastatur nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Stößel (31) aus einem einzigen Stück homogenem Material erzeugt ist.
  5. Tastatur nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Stößel (31) aus einem elastomeren Material besteht.
  6. Tastatur nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Stößel (31) zylindrisch ist.
  7. Tastatur nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Aussparung (63) zylindrisch ist.
  8. Tastatur nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Taste (15) eine Nase (152) aufweist, deren Form zu der eines oberen Teils (63a) der Aussparung (63) komplementär ist, wobei die Nase (152) in den oberen Teil (63a) der Aussparung (63) eingeführt wird.
  9. Tastatur nach Anspruch 8 in Kombination mit Anspruch 3, dadurch gekennzeichnet, dass die Nase (152) oder der Grund der Aussparung (63) eine solche Form hat, dass eine progressive Zunahme einer Kontaktfläche zwischen der Taste (15) und dem Grund der Aussparung (63) gewährleistet wird, wobei die Nase (152) oder der Grund der Aussparung (63) die Mittel zum Gewährleisten eines progressiven Übergangs zwischen der ersten Steifigkeit (k1) und der zweiten Steifigkeit (k2) über den Weg der Taste (15) bildet.
  10. Tastatur nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass sie eine Frontfläche (11) aufweist, die starr mit dem Schalter (13) verbunden ist und eine Öffnung (14) aufweist, durch die die Taste (15) und die Mittel (19, 20) zum Begrenzen des Wegs der Taste (15) auf der dem Schalter (13) gegenüberliegenden Seite verlaufen, wobei der Stößel (31) zwischen der Taste (15) und dem Schalter (13) vorgespannt ist.
  11. Tastatur nach Anspruch 10, dadurch gekennzeichnet, dass die Mittel (19, 20) zum Begrenzen des Wegs der Taste (15) Folgendes umfassen:
    - eine Schulter (20) an der Taste (15); und
    - eine Senkung (19) an der Frontfläche (11).
  12. Tastatur nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass eine Härte des Materials des Stößels (31) zwischen 60 und 80 Shore A liegt.
EP09823100.4A 2008-10-28 2009-09-23 Tastatur mit weitem tastenabstand und verbessertem berührungsgefühl Not-in-force EP2342728B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0805986A FR2937789B1 (fr) 2008-10-28 2008-10-28 Clavier a longue course de touches et a sensation tactile amelioree
PCT/EP2009/062301 WO2010049219A1 (fr) 2008-10-28 2009-09-23 Clavier a longue course de touches et a sensation tactile amelioree

Publications (2)

Publication Number Publication Date
EP2342728A1 EP2342728A1 (de) 2011-07-13
EP2342728B1 true EP2342728B1 (de) 2014-12-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09823100.4A Not-in-force EP2342728B1 (de) 2008-10-28 2009-09-23 Tastatur mit weitem tastenabstand und verbessertem berührungsgefühl

Country Status (5)

Country Link
US (1) US8541707B2 (de)
EP (1) EP2342728B1 (de)
CA (1) CA2741733C (de)
FR (1) FR2937789B1 (de)
WO (1) WO2010049219A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013069084A1 (ja) * 2011-11-07 2013-05-16 株式会社ソニー・コンピュータエンタテインメント 操作子及び操作装置
JP5615886B2 (ja) * 2012-10-17 2014-10-29 株式会社東海理化電機製作所 操作装置
FR3024251B1 (fr) 2014-07-25 2017-11-24 Thales Sa Securisation d'un dispositif d'entree de donnees
WO2019225635A1 (ja) * 2018-05-24 2019-11-28 パナソニックＩｐマネジメント株式会社 プッシュスイッチ
DE102019005800A1 (de) * 2019-08-17 2021-02-18 Kostal Automobil Elektrik Gmbh & Co. Kg Elektrischer Tastschalter

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Publication number Priority date Publication date Assignee Title
JPS5411480A (en) * 1977-06-29 1979-01-27 Oki Electric Ind Co Ltd Pushbutton switch
US4362911A (en) * 1980-09-17 1982-12-07 Ncr Corporation Membrane keyboard switch assembly having selectable tactile properties
JPS6233123U (de) * 1985-08-14 1987-02-27
US4831223A (en) * 1987-03-25 1989-05-16 Jelco Co. Ltd. Push-button switch
EP0339209B1 (de) * 1988-03-31 1995-05-17 Oki Electric Industry Company, Limited Druckknopf-Schalter
JPH01264125A (ja) * 1988-04-13 1989-10-20 Brother Ind Ltd 押下キースイッチ
CH677552A5 (de) * 1989-04-10 1991-05-31 Sulzer Ag
FR2659459B1 (fr) * 1990-03-08 1993-11-26 Sextant Avionique Touche a effet tactile et clavier utilisant cette touche.
US5389757A (en) * 1993-06-15 1995-02-14 Digital Equipment Corporation Elastomeric key switch actuator
JP4039030B2 (ja) * 2001-10-29 2008-01-30 松下電器産業株式会社 プッシュオンスイッチ
KR20040043896A (ko) * 2002-11-20 2004-05-27 삼성전자주식회사 푸시버튼

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Publication number Publication date
WO2010049219A1 (fr) 2010-05-06
FR2937789A1 (fr) 2010-04-30
US8541707B2 (en) 2013-09-24
CA2741733C (en) 2016-12-20
US20110214974A1 (en) 2011-09-08
EP2342728A1 (de) 2011-07-13
FR2937789B1 (fr) 2010-12-31
CA2741733A1 (en) 2010-05-06

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