EP3794623B1 - Module de touche - Google Patents

Module de touche Download PDF

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Publication number
EP3794623B1
EP3794623B1 EP19724194.6A EP19724194A EP3794623B1 EP 3794623 B1 EP3794623 B1 EP 3794623B1 EP 19724194 A EP19724194 A EP 19724194A EP 3794623 B1 EP3794623 B1 EP 3794623B1
Authority
EP
European Patent Office
Prior art keywords
contact
key module
movement axis
housing element
nose
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.)
Active
Application number
EP19724194.6A
Other languages
German (de)
English (en)
Other versions
EP3794623A1 (fr
Inventor
Eduard Ruff
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.)
Cherry Europe GmbH
Original Assignee
ZF Electronics GmbH
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 ZF Electronics GmbH filed Critical ZF Electronics GmbH
Publication of EP3794623A1 publication Critical patent/EP3794623A1/fr
Application granted granted Critical
Publication of EP3794623B1 publication Critical patent/EP3794623B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • 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
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/28—Snap-action arrangements depending upon deformation of elastic members using compression or extension of coil springs
    • 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
    • H01H13/50—Switches 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
    • H01H13/52—Switches 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
    • 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
    • H01H13/86—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 casing, e.g. sealed casings or casings reducible in size
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/03—Sound
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/024—Profile on actuator
    • 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
    • H01H2221/036—Return force
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/05—Force concentrator; Actuating dimple
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/058—Actuators to avoid tilting or skewing of contact area or actuator

Definitions

  • the present invention relates to a key module according to the main claim.
  • the key module can be used in a computer keyboard, for example.
  • buttons are designed to be relatively leaky for cost reasons, so that damage to the keyboards occurs relatively quickly if water or aqueous liquids are poured over them, for example.
  • the weak points in the button module with regard to damage caused by liquids are specifically the electrical switching mechanism and a guide for the plunger.
  • On the part of the user there is still often a need for different key modules, for example with a linear force curve during actuation, with a pressure point for actuation, with a clicking noise when actuated and with different force-displacement curves.
  • Such a variety requires the button manufacturers to keep available an enormous number of variants of button modules, which usually have to be produced in different ways and are therefore expensive to produce.
  • the pamphlet U.S. 2017/221653 A1 discloses a tactile switch.
  • the pamphlet WO 2017/026946 A1 discloses key assemblies, keyboards and a method of providing a key assembly.
  • the pamphlet DE 689 17827 T2 discloses a keyboard switch.
  • the pamphlet WO 2018/172468 A1 shows a button module.
  • the present invention provides an improved key module according to the main claim.
  • Advantageous configurations result from the dependent claims and the following description.
  • An actuating element can be understood to mean, for example, a plunger.
  • the driver lug can be understood, for example, as a projection of the actuating element which, during a movement in the direction of the movement axis, engages behind, deflects and/or entrains another element such as the contact lug.
  • a movement axis can be understood as an axis along which the actuating element is moved or is movable in relation to the housing element.
  • a contact element can be understood to mean an element which consists at least partially of an electrically conductive material and is fixed, for example, at a predetermined position in the housing element.
  • the housing element can be understood, for example, as a base element for accommodating the contactor unit, the contact element and the actuating element, wherein the housing element can also have a cover element as a further section in order to encapsulate the components mentioned.
  • a contactor unit can be understood to mean an element which has a contact lug that can be moved in different directions, with the contact lug being able to be understood as a region of the contactor unit in which an electrical contact can be closed with a corresponding counterpart.
  • the contact element can, for example, serve as a counterpart to the contactor unit in order to close an electrical contact in the form of a switch.
  • a design element can be understood, for example, as a guide surface, a strut, a contour of the driver lug (in particular on its outer surface) or a surface on the driver lug which is designed to deflect the contact lug in a direction longitudinal and/or transverse to the axis of movement if the contact lug is guided along the axis of movement during a movement of the actuating element, for example is taken along by the driving lug and is deflected on the structural element.
  • the housing element can have a cover element as a partial section, through which the actuating element is guided and/or mounted.
  • the housing element can also be designed to accommodate the contact element, the contact-making unit and at least part of the actuating element.
  • the actuating element and/or the driver lug can have a structural element aligned at an angle to the direction of movement or a guide surface which is designed to deflect the contact lug from a rest position adjacent to the contact piece in the direction longitudinal and/or transverse to the axis of movement when the contact lug is at a Depressing the actuating element is carried along or deflected by the driving lug.
  • the approach presented here is based on the finding that by using the driver lug on the actuating element when the actuating element moves along the axis of movement, i.e. when the actuating element is pressed down, the contact lug, as that area of the contactor unit that is designed to be most mobile, is taken along and along the or guided around the structural element until the contact lug is laterally expanded by sliding along the structural element so far that it slips laterally past the driver lug and is thereby released (e.g. abruptly) to return to its original position, i.e. the rest position to grab.
  • this allows a clicking noise to be generated which is very close in time to electrical contact between the contact lug and the contact element, so that the user of the button module can also hear the clicking noise promptly as confirmation of electrical contact between two electrical contact points.
  • the approach presented here offers the advantage that the deflection and snapping back of the contact nose of the contactor unit as part of an electrical contact switch can avoid a design effort to equip the button module with a unit for generating the clicking noise. In this way it is possible to create a key module that is inexpensive and easy to produce, which nevertheless has the advantages that are most valued by users.
  • the construction element can be designed to guide the contact lug around the driver lug when the actuating element is pressed down.
  • a moving around can be understood, for example, as meaning that the contact lug is at the greatest distance from the movement axis at the time of this moving around.
  • the contact lug can be released very easily and over a defined distance in order to generate the clicking sound after snapping back and to ensure the electrical connection can be repeated over a certain distance after the actuating element has been pressed down.
  • the housing element has a path-limiting element in order to limit a path of movement of the contact lug in the direction of the axis of motion.
  • a path-limiting element in order to limit a path of movement of the contact lug in the direction of the axis of motion.
  • the driver lug and/or the construction element has at least one guide surface that is inclined in relation to the alignment of the movement axis, in particular wherein the guide surface is arranged in advance of a movement of the driver lug from an original position.
  • the contactor unit can also be designed to strike the contact nose against the at least one section of the housing element after it has been deflected on the structural element.
  • such an embodiment offers the advantage of forming a defined surface for deflecting the contact lug with as little force and friction as possible and, on the other hand, providing a stop surface on the housing element or cover element, which on the one hand can be reinforced accordingly and on the other hand to form a can be structured according to certain sound noise and connected to other areas of the housing element and / or cover element.
  • An embodiment of the approach presented here is also favorable in which the contactor unit at least partially has a U-shaped section, in particular where the contact lug is arranged at one end of the U-shaped section of the contactor unit and/or where a U-shape of the contactor unit in a plane which is oriented substantially perpendicular to the movement axis.
  • Such an embodiment of the approach proposed here offers the advantage of a contactor unit that is technically very easy to implement, in which the contact lug nevertheless has the desired mobility in different directions of movement.
  • the contactor unit can be designed as a correspondingly shaped or bent metal strip.
  • the contactor unit has a greater (mechanical) rigidity in relation to a movement of the contact lug in the direction of the movement axis than a (mechanical) rigidity in the direction transverse to the movement axis.
  • Such an embodiment of the approach proposed here offers the advantage that the contact lug moves significantly faster in the direction of the movement axis than transversely to the movement axis when moving back after being guided around via the driver lug. In this way it is ensured that the clicking sound is essentially caused by a movement in the direction of the movement axis, which is designed to be clearly repeatable and offers a sufficient snapping path for the contact lug in order to generate the clicking sound clearly perceptible to the user.
  • the contactor unit has a stop section in the area of the contact lug, which is designed to abut the contact lug to the at least one section of the housing element or the cover element.
  • the section can have a surface which is aligned essentially parallel to at least one section of the housing element or to the cover element or part of the cover element and/or wherein the stop section is formed by an angled part of the contactor unit or the contact lug and/or wherein the stop section has a greater length to at least one portion of the housing element or to the cover element towards aligned surface as a thickness.
  • the return movement of the actuating element along the axis of movement should be able to take place as unhindered as possible or only with minor obstacles.
  • An embodiment of the approach proposed here is particularly advantageous in which the driver lug of the actuating element has at least one reset surface section, which has a surface that is oriented obliquely in relation to the direction of the movement axis, in particular wherein the reset surface section is designed to to guide the contact lug around the driver lug.
  • the reset surface section is designed to guide the contact lug around the driver lug.
  • the contactor unit can have a surface section in the area of the contact lug, the surface of which is oriented obliquely to the direction of the movement axis, in particular the surface of which is no longer oriented, i.e. at a maximum, at an acute angle to the reset surface section, in particular its surface is aligned parallel to the construction element.
  • This surface portion may be formed and arranged to at which To slide along the reset surface section.
  • the at least one section of the housing element or the cover element has a cover flank with a surface at an angle to the direction of the movement axis in the area of an opening through which the actuating element is guided and/or wherein the Actuating element in a passage area, which is surrounded by the at least one section of the housing element or the cover element, has a plunger flank with a surface oblique to the direction of the movement axis.
  • the cover flank can be arranged circumferentially around the opening in at least one section of the housing element or in the cover element.
  • the plunger flank can also be arranged circumferentially around the actuating element in the passage area.
  • a key module according to an embodiment of the approach presented here is particularly well protected against the ingress of liquids, in which a sealing element is provided which is arranged between the at least one section of the housing element or cover element and the housing or base element, in particular wherein the Sealing element is arranged or pressed in a groove of at least one section of the housing element or the cover element and/or a groove of the housing element or base element.
  • a capillary effect can be used in such an embodiment in order to prevent the liquid from penetrating into the key module.
  • the sealing element can enclose the area of the actuating element, the contactor unit and the contact element in a fluid-tight manner, in particular with the sealing element being in the form of a labyrinth seal or as a Labyrinth seal is formed. In this way, a hermetic sealing of the components that are most important for the function of the key module can be achieved with a low expenditure on material.
  • the at least one section of the housing element or the cover element can have at least one light-guiding element, in particular the light-guiding element being at least partially ring-shaped around an area in which the actuating element is guided by at least one section of the housing element or the Lid element is guided.
  • the actuating element can have a cylindrical key cap carrier section in a penetration area in which it protrudes through at least one section of the housing element or the cover element and on one of the
  • the key cap carrier section has at least one rib on the outside
  • the housing or base element has at least one receiving cup with at least one recess for accommodating the rib of the actuating element to accommodate the guide section of the actuating element.
  • the actuating element can be guided particularly reliably when it is pressed down if the actuating element has an at least partially hollow-cylindrical section in the area of the guide section in particular wherein the at least one rib is formed on an outer side of the hollow-cylindrical section and/or wherein a guide plunger of the housing element engages in the hollow-cylindrical section of the guide section of the actuating element.
  • a key module can be designed particularly quietly by providing a shock absorber element which is arranged between the actuating element and the housing element, in particular the shock absorber element being cylindrical or ring-shaped.
  • a shock absorber element which is arranged between the actuating element and the housing element, in particular the shock absorber element being cylindrical or ring-shaped.
  • the button module or the button module 100 can be constructed as a modular construction kit and essentially comprises the components plunger 105, cover element 110, contactor unit 115, contact element 120, compression spring 125 and housing unit 130 (also referred to synonymously as housing element, base element or base unit can be, in the following description as a housing element or housing unit without restricting the generality of lower part of the receiving body of the components of the key module 100 is understood, but in principle the cover element 110 can also be understood as a part or section of the housing element).
  • the plunger 105 (which can also be referred to synonymously as an actuating element) includes a driving lug 135 which, as will be explained in more detail in the following description, can entrain a contact lug 140 of the contactor unit 115 and deflect it from a rest position.
  • the contactor unit 115 is designed as a U-shaped metal element and is therefore electrically conductive.
  • the contact lug 140 is arranged in one end of the contactor unit 115 and, in addition to a contacting tip 145, via which an electrical contact of the contactor unit 115 can be closed with the contact element 120, also comprises other components which are described in more detail below.
  • the button module 100 illustrated comprises a sealing element 150, which is placed on the housing unit 130 and thus enables a fluid-tight seal or enclosure of the contactor unit 115, the lower part of the plunger 105, in particular including the driver lug 135, in order to thereby protect the functionality of the button module 100 as best as possible against to protect or secure externally acting liquids.
  • the sealing element 150 can, for example, be configured circumferentially and/or have a triangular cross-sectional profile, for example in order to figure 1 engage not shown groove in the cover member 110 and thereby bring about the best possible sealing effect.
  • the compression spring 115 is in the in the figure 1 illustrated embodiment as a spiral coil spring, for example made of metal; however, it is also conceivable to use an alternative spring element, such as a plastic spring or a cushion filled with fluid, in order to return the plunger 115 to its original position after it has been pressed down.
  • the key module 100 can be implemented cost-effectively in three design variants.
  • the main changes are specifically the driver lug on the ram 105, which is also referred to here as the driver lug 135, and in part a contour wall as a structural element 140 in the housing element 130, which is also referred to below as the baffle.
  • the plunger 105 also has a cylindrical keycap support portion 160 (on which a figure 1 not shown symbol-carrying button cap is clipped) in a passage area in which it protrudes through the cover element 110.
  • the plunger 105 has at least one rib 170 on an outer side 167 of a guide section 165 adjoining the key cap carrier section 160 .
  • a wall thickness of the wing or wings 170 can be at most half, advantageously at most one third, of a diameter of the cylindrical key cap carrier section 160 .
  • the guide section 165 In the assembled state of the key module 100, the guide section 165 is received in a receiving cup 175 of the housing element 130, the receiving cup, as will be described in more detail below, in the figure 1 not shown recesses for receiving a wing 170 of the guide portion 165 of the plunger 105 has.
  • the guide section 165 can be designed as a hollow-cylindrical section 180, on the outer sides 167 of which the wing or wings 170 are arranged.
  • the plunger 105 By using the plunger 105 with the key cap carrier section 160, which protrudes through an advantageously circular opening in the cover element 110, the plunger 105 can be guided with as little canting as possible when the plunger 105 is pressed down.
  • This low-tilting guidance of the plunger 105 when it is pressed down can be further improved if the wing(s) 170 of the guide section 165 of the plunger 105 also engage in the recess(es) of the receiving cup 175 and thus, on the one hand, guide the plunger 105 in the direction of movement during depression and, on the other hand, can ensure guidance against twisting. This ensures that the plunger 105 of the key module 100 can be actuated with very little tilting.
  • figure 2 shows a cross-sectional view of a module variant of a button module 100 from the prior art with a linear force-displacement curve.
  • the force-displacement curve can be implemented as desired by adapting or selecting a suitable compression spring 125.
  • the plunger 105 can be moved in the direction of a movement axis 200 in relation to the housing element 130 . This movement can be effected, for example, by depressing the plunger 105, after a button is pressed on the plunger 105 by the restoring force of the compression spring 125 of the plunger back into its in the figure 2 shown initial position or rest position is returned.
  • the plunger 105 has a plunger flank 220 in a passage region 210, in which it is passed through an opening 215 of the cover element 110, which comprises a surface which is aligned obliquely to the movement axis 200.
  • the cover element 110 also has a cover flank 225 in the region of the opening 215, which includes a surface that is oriented obliquely to the movement axis 200.
  • the surface of the plunger flank 220 and the surface of the cover flank 225 can be aligned essentially parallel and in the in the figure 2 illustrated rest position of the key module 100 develop a sealing effect in order to prevent the ingress of liquids into an interior of the key module 100 as effectively as possible.
  • the button 100 includes a shock absorber element 230 which is mounted or inserted, for example, on a guide plunger 235 of the housing element 130 and which cushions the impact of the plunger 105 on this part of the housing element 130 .
  • a noise-reduced variant of a key module 100 can be produced in this way. It is particularly favorable if, for example, a rubber stopper is used as the shock absorber element 230, which is cut from round bar stock and inserted into the guide stamp 230, since such an exemplary embodiment can be produced very inexpensively.
  • 3 12 shows a cross-sectional view of another example of key module 100, in this example a solution to implement a pressure point is used.
  • a tactile sensing of the exceeding of a specific path length of the plunger when the button module 100 is pressed down by the user can take place.
  • This tactile sensing can be implemented, for example, in that the driver lug 135 has a projection in the direction of the contact lug 140, so that when the plunger is pressed down, the user of the button module has to apply increased pressure if the contact lug 140 is to slide around the driver lug 135 .
  • the user of the button module 100 feels this increased depression pressure and from this recognizes a specific distance by which the plunger 105 has already been depressed.
  • FIG 4 10 shows a cross-sectional representation of an embodiment of the present invention as a button module 100 using a solution for implementing a press and click point.
  • the click variant described with reference to the following figures as an exemplary embodiment of a key module 100.
  • the clicking noise is induced directly by one of the electrical switching contacts, for example by an impact of a part of the contactor unit 115, specifically the contact lug 140, after passing the driver lug 135 on the cover element 110 or plunger 105.
  • the components of the electrical switching contacts are required as a part or component to provide the click and switching function.
  • the contactor unit 115 is designed in such a way that at least part of the contactor unit 115, such as the contact nose 140 here, can be deflected (actuated) three-dimensionally.
  • the contactor unit 115 is installed in the switching module or the key module 100 in a prestressed state, so that, for example, gold crosspoint contacts of the contactor unit 115 (which form the contact tip 145, for example) and the fixed contact or the contact element 120 are pressed onto one another.
  • a defined contact force is set in the switched (i.e. electrically connected) state, which remains almost unchanged over the entire service life.
  • This prestressing or actuation movement takes place in the horizontal plane, i.e. in a direction transverse or perpendicular to movement axis 200. This applies in particular to the linear and pressure point variants of key module 100 mentioned here.
  • the contactor unit 115 or the contact lug 140 as part of the contactor unit 115 is also moved in the actuating direction or in the direction by means of the driver lug 135 the axis of movement 200, so as shown in the figure 4 vertical, deflected.
  • the driver lug 135 has a structural element 400 which, for example, has a contour with a guide surface 410 aligned obliquely with respect to the movement axis 200 .
  • a path of movement of the contact lug 140 in the direction of the axis of motion 200 can be limited by a path-limiting element 430, which is formed, for example, by a part of the housing element 130.
  • the contact lug 140 on the guide surface 410 is transverse to the direction of the movement axis 200 by the driving lug 135, ie, in the representation of figure 4 in the horizontal direction to the right, deflected, the contact lug 140 being stretched further compared to a rest position.
  • contact lug 140 slides around driver lug 135, with contact lug 140 sliding around a driver lug projection 420 and thus being suddenly released, so that contact lug 140 moves both in the direction of movement axis 200 and transversely is released to the movement axis 200 (more precisely, as long as the driving lug 135 does not block a path transverse to the movement axis 200).
  • An actuator of the actuating element 105 can thus be signaled tactilely that the deflection of the contact lug 140 has taken place.
  • figure 5 shows a cross-sectional view of a button module 100 according to an embodiment of the approach presented here, in which the contact lug 140 is now limited by the path limiting element 430 in a further movement in the direction of the movement axis 200 and is thus deflected in a maximum deflection in relation to the movement axis 200.
  • the contact lug 140 of the contactor unit 115 is deflected by the driver lug 135 or the guide surface 410 transversely to the direction of movement.
  • a surface section 500 of the contact lug 140 can be provided, which is oriented obliquely to the direction of the movement axis 200 .
  • the surface of the surface section 500 can be aligned at most at an acute angle to the movement axis 200, with a particularly low sliding resistance when the contact lug 140 slides along a subsequent reset surface section described in more detail can be achieved if the surface of the surface section 500 is aligned parallel to this reset surface section.
  • figure 6 shows a shows a cross-sectional view of in the figure 5 illustrated exemplary embodiment of the present invention as a key module 100, in which the contact lug 140 is now deflected at a point of maximum deflection transversely to the movement axis 200 and disengages when the actuating element 105 is pressed down further. From the point at which the contact lug 140 disengages, the contactor unit 115 or the contact lug 140 is free again and can be both in the vertical (ie in a longitudinal direction of the movement axis 200) and in the horizontal direction in the figure 5 (ie in a direction transverse to the movement axis 200), return to the original position or resting position.
  • the cover element 110 has a stop wall 600 against which a stop section 610 of the nose 140 strikes in order to produce a clicking sound, as will be described in more detail below.
  • figure 7 shows a cross-sectional view of in the figure 5 shown exemplary embodiment of the present invention as a key module 100, the contact lug 140 now striking the stop wall 600 of the cover element 110 after it has been disengaged, thereby producing a clicking noise.
  • the (mechanical) rigidity of the contactor unit 115 was designed to be significantly higher in the vertical direction than in the horizontal direction, the contact lug 140 of the contactor unit 115 strikes with a surface defined for this purpose (which is referred to here as the stop section 610) against the stop wall 600 of the cover element 110 first and generates a desired defined clicking sound.
  • the stop section 610 can have a surface, for example, which is aligned essentially parallel to the cover element 110 or the stop wall 600 of the cover element 110 .
  • the stop section 610 can also be formed by an angled part of the contactor unit 110 or the contact lug 140 and, alternatively or additionally, can have a longer length of a surface aligned towards the cover element 110 than a thickness.
  • the contactor unit 110 or the contact lug 140 moves in the horizontal plane, ie. i.e. towards the plunger 105 or the contact element 120 and the electrical contact is closed with a predefined force.
  • a reset surface section 700 can be seen on one side of driver lug 135, which engages on surface section 500 of contact lug 140 after release of plunger 105 or actuating element 105 with the cooperation of spring 125 during an upward movement of plunger 105 and contact lug 140 in turn to the right, i.e. transversely to the movement axis 200, in order to now deflect the contact lug 140 through the reset surface section 700 to the right, ie transversely to the direction in which the movement axis 200 extends, in order to bring the plunger 105 back into the starting position or original position or rest position.
  • figure 8 shows a cross-sectional view of in the figure 6 shown exemplary embodiment of the present invention as a key module 100, with the contact lug 140 now being guided back into the rest position after striking the cover element 110 and thus electrical contact between the contact tip 145 of the contactor element 115 and the contact element 120 is closed.
  • figure 8 thus shows a cross-sectional view of in the figure 7 illustrated embodiment of the present invention as a key module 100, wherein the contact lug 140 has now slid along the stop wall 600 after striking the stop section 610 and has been transferred to the rest position.
  • the plunger 105 After the plunger 105 has been released, due to the restoring force of the compression spring 125, the plunger 105 is returned to an original position.
  • the contactor unit 115 or the contact lug 140 by a reset surface portion 700 of the driver lug 135, as a slope of the Plunger 105 in the right direction from the figure 7 , ie deflected horizontally or transversely to the direction of the movement axis 200 .
  • the contact lug 140 slips over the driver lug or the driver lug 135, strikes again, but against the plunger 105 and generates a second clicking noise, which is less intense, for example due to the design of the geometry of the construction element 400 (in particular the slopes of the surfaces of the driver lug 135). can be than the first click sound.
  • the sound and the intensity of the clicking noise can be set as desired by the deflection path, material properties of the contactor unit 115, distance from the stop surface 610, rigidity and weight of the contactor unit or the contact lug 140.
  • the lower guide i. e., a guide device in the area of the housing element 130 as narrow as possible (e.g. approx. 1 mm) and the upper guide, d. That is, a guide device in the area of the cover element 110 or the plunger 105 should be designed as wide as possible (to a certain extent).
  • figure 9 shows a plan view of an embodiment of the present invention as a button module 100, wherein the figure 9 a top view of an open housing element 130 without clipped cover element 110, but with inserted Plunger 105 represents.
  • contact element 120, contactor unit 115 including contact lug 140 and contact tip 145, stop section 610, guide wall, sealing element 150 and shock absorber element 230 can also be seen arranged key cap carrier ribs 900 can be seen, which ensure a secure and non-rotatable fastening of the key caps to be clipped or pushed onto the plunger 105 (which are shown in figure 9 are not shown).
  • FIG 10 shows a side view of an exemplary embodiment of the present invention as a key module 100 in assembled form, ie with a clipped-together cover element 110 and housing element 130 and with further components arranged therein in accordance with the above statements.
  • the button module 100 is shown here in the depressed state, ie in the actuated state. Also shown are the positions of a first section AA and a second section BB through the button module 100, the sectional views of which are described in more detail in the following explanations.
  • FIG 11 shows a sectional view through the button module 100 corresponding to section AA from the illustration in accordance with FIG figure 10 .
  • wings 170 are placed on a stable cylinder sleeve or the outside 167 of the guide section 165 of the ram 105, which engage in at least one (or more) recesses 1100 of the receiving cup 175 of the housing element 130, the overall rigidity of the ram 105 is also given in the usual material versions.
  • the ram 105 is prevented from twisting by the cross guide of the wings 170 engaging in the recesses 1100.
  • the lower guide was thus designed in the guide section 165 in the housing element 130 as recesses 1100 for ribs (which can also be referred to as wings 170) of the ram 105 , which are specially aligned in the shape of a cross and are provided, for example, with a wing width of approximately 1 mm In the main load directions, the guide widths are equal to the thickness of the wings 170 arranged crosswise, ie, for example, approximately 1 mm.
  • figure 12 shows a sectional view through the button module 100 corresponding to the section BB from the illustration in accordance with FIG figure 10 .
  • the plunger 105 can also be seen, with the key cap carrier ribs 900 also being shown in the form of ribs arranged crosswise, on which a figure 12 not shown key cap can be attached.
  • a light guide element 1210 of the cover element 110 can also be seen, which is arranged at least partially in a ring shape around an opening 215 through which the plunger 105 is guided. This light guide element 1210 serves to improve the illumination of the key cap.
  • the light guide element 1210 is designed in such a way that it protrudes from the cover element 110 (for example according to the illustration in FIG figure 12 out of the plane of the drawing) and is made of a transparent material.
  • the light-guiding element 1210 can protrude through the cover element 110 on the opposite side of the light source and can be made transparent, so that on the back of the in the figure 12 illustrated cover element 110, the light-guiding element 1210 is also integrated cost-effectively as an at least partially round light-guiding element 1210 designed to be round around the plunger 105, in order to be able to emit light as uniformly as possible onto a key cap clipped onto the plunger 105.
  • the preferably at least partially ring-shaped light guide was therefore inexpensively integrated into the cover element 110 as the light-guiding element 1210.
  • figure 13 shows a perspective view of the cover element 110 with the light-guiding element 1210 integrated therein.
  • the uniform emission of the light can be achieved in different areas of the cover element 110 by introducing reflective structures or surfaces with different diffusion values on/in the light-guiding element 1210 or different positions of the light-guiding element 1210 to be designed.
  • figure 14 shows a perspective view of the ram 105 with the wings 1100, the driver lug 135, the reset surface section 700 and the ram flank 220.
  • the interface between the cover element 110 with the cover flank 225 and the plunger 105 with the plunger flank 220, which forms a conical ring stop, ensures a relatively good form-fitting seal of the key module 100, at least in the non-actuated state.
  • the upper guide is designed as a cylindrical hole sleeve, ie a cylindrical guide section 160 of the plunger 105, which can be guided in the opening 215. This embodiment prevents the ingress of foreign particles and liquids in large quantities even during the entire actuation path, as is already the case with reference to FIGS Figures 4 to 6 is revealed.
  • the switching mechanism i.e. the electrical contacts such as the present contact unit 115 and the contact element 120, as well as the components for guiding the plunger 105, in particular the compression spring 125 and the wings 110 and the recesses 900, are particularly sensitive to water or liquids containing sugar such as cola would lead to an inoperability of the button module 100 in the event of sticking.
  • the robustness of the button module 100 is significantly improved, for example, by introducing a labyrinth seal as a sealing element 150 between the cover element 110 and the housing element 130 acting as a base.
  • the labyrinth seal as a sealing element 150 protects the entire rear derailleur, ie the contactor unit 115 and the contact element 120, and the components for guiding the plunger 105, as is already the case with reference to FIG figures 1 and 9 as already described, against ingress of liquids such as water or sugary drinks and dust in harmful quantities.
  • the aqueous liquids are by capillary action in the Labyrinth seal stopped as a sealing element 150 so that they do not penetrate into the action module 100.
  • keyboards have reduced noise levels.
  • a complex two-component technology is currently used, for example, in the applicant's MX-Silent modules.
  • Soft damping elements are injected at certain points in order to reduce the noise generated when components hit these parts.
  • the production of such a key module 100 is therefore very cost-intensive, limited in the choice of materials and requires special tools and processes.
  • a key module 100 is presented in which this problem is provided by, for example, an additional installation of a rubber profile as a shock absorber element 230 (for example in a round, square, etc ... shape) as a damping element in the centering pin as a guide stamp 235
  • FIG 15 shows a perspective view of a housing element 130 with the sealing element 150, the shock absorber element 230, the guide stamp 235 and other components mentioned above.
  • the shock absorber element 230 can be designed as a rubber damper and can be prefabricated as an endless profile, for example, and cut to the desired length and mounted in the guide stamp 235 .
  • the damping element or shock absorber element 230 can be built into the guide plunger 235 between the plunger 105 and the housing element 130 as a disk or ring. This approach has several advantages, for example, installation can be done as required and no additional tools are required. Also, a wide range of materials are available for the shock absorber element 230 and the overall cost of protruding such an optional shock absorber element 230 is low.
  • an interior view of the housing element 130 with the receiving cup 175 and the recesses 1100 arranged in the receiving cup 175 can also be seen, these recesses 1100 are provided here as complete lateral slit-shaped openings in the receiving cup 175.
  • figure 16 shows a side view of a key module 100, which is installed on a printed circuit board 1600, as can be used, for example, as a printed circuit board for a keyboard.
  • FIG 17 shows a side view of another key module 100, which was also installed on a printed circuit board 1600, the key module 100 also being inserted through another printed circuit board as a mounting frame 1700 or being held by this mounting frame 1700 during production.
  • the mounting frame 170 can be used, for example, as a holding circuit board to ensure stable alignment of the button module 100 during the process of fastening the button module 100 to the circuit board 1600 .
  • the mounting frame 1700 can be arranged at a small distance above the printed circuit board 1600 .
  • a reduced overall height of the key modules 100 makes it difficult or impossible to assemble electronic components that are often required (for example based on SMDs) on the top side of a printed circuit board as a carrier for the key modules 100, particularly in connection with frame assembly. Mounting the required components on the underside of such a printed circuit board is also problematic, since certain components should be attached directly to the action modules 100. This results in considerable difficulties in the subsequent button module soldering process (especially when using a wave of solder), since all components would have to be covered. There is also a risk of destroying electronic components due to electrostatic discharges (up to 8 KV).
  • SMD components for example LEDs, diodes; resistors
  • SMD components can be placed underneath the key module 100 on the upper side of the printed circuit board.
  • FIG 18 shows a perspective view of a key module 100 on the housing element 130.
  • the electronic components 1800 of the key module 100 which are mechanically protected by the housing element 130 of the key module 100 and against electrical discharges.
  • a subsequent soldering process can be designed cost-effectively, since no components have to be placed on the underside of the circuit board.
  • the button module 100 can be placed directly on the mounting frame 1700, as shown in FIG figure 16 can be seen or held by means of additional mounting frame 1700, as is evident from the figure 17 is recognizable.
  • additional discharge protection can be provided by electrically connecting a protective structure on the top side of the printed circuit board 1600 or mounting rams 1700 to a ground line directly or by means of a discharge resistor (for example 100-300 ohms).
  • an embodiment includes an "and/or" link between a first feature and a second feature, this can be read in such a way that the embodiment according to one embodiment includes both the first feature and the second feature and according to a further embodiment either only the first Feature or has only the second feature.

Landscapes

  • Push-Button Switches (AREA)

Claims (15)

  1. Module de clé (100) comprenant :
    - - un élément d'actionnement (105) comprenant un nez de came (135), dans lequel l'élément d'actionnement (105) est supporté pour être mobile le long d'un axe de mouvement (200) dans un élément de logement (130, 110) ;
    - - une unité de contacteur (115) avec un nez de contact (140) mobile dans la direction de l'axe de déplacement (200) et transversalement à la direction de l'axe de déplacement (200) ;
    - - un élément de contact (120) formé et agencé pour établir un contact électrique avec le nez de contact (140) ; et
    - - l'élément de logement (130, 110) formé pour recevoir l'élément de contact (120), l'unité de contacteur (115) et l'élément d'actionnement (105),
    - caractérisé en ce que
    - le nez de came (135) comprend au moins un élément constructif (400) formé pour dévier le nez de contact (140) d'une position de repos adjacente à l'élément de contact (120) dans la direction le long et transversale à l'axe de mouvement (200) lors d'un mouvement défini de l'élément d'actionnement (105) et ensuite le relâcher brusquement de sorte que le nez de contact mobile (140) retourne à la position de repos et frappe l'élément de contact (120) et l'élément de logement (130, 110), dans lequel un contact électrique avec l'élément de contact (120) est établi et un bruit acoustique est produit.
  2. Module de clé (100) selon la revendication 1, caractérisé en ce que l'élément constructif (400) est formé pour guider le nez de contact (140) autour du nez de came (135) lorsque l'élément d'actionnement (105) est enfoncé, et/ou dans lequel l'élément de logement (130) comprend un élément de limitation de distance (430) pour limiter une distance de déplacement du nez de contact (140) dans la direction de l'axe de déplacement (200).
  3. Module de clé (100) selon l'une des revendications précédentes, caractérisé en ce que le nez de came (135) et/ou l'élément constructif (400) comprend au moins une surface de guidage (410) oblique par rapport à l'orientation de l'axe de déplacement (200), en particulier, la surface de guidage (410) est disposée de manière à aller dans le sens d'un déplacement du nez de came (135) lors d'un déplacement dans la direction de l'axe de déplacement (200) à partir d'une position d'origine, et/ou l'unité de contacteur (115) est formée pour venir heurter le nez de contact (140) sur au moins une partie (110) de l'élément de boîtier après une déviation sur l'élément constructif (400).
  4. Module de clé (100) selon l'une des revendications précédentes, caractérisé en ce que l'unité de contacteur (115) comprend une portion au moins partiellement en forme de U, en particulier dans lequel le nez de contact (140) est disposé sur une extrémité de la portion en forme de U de l'unité de contacteur (115) et/ou dans lequel une forme en U de l'unité de contacteur (115) est formée dans un plan sensiblement perpendiculaire par rapport à l'axe de déplacement (200).
  5. Module de clé (100) selon l'une des revendications précédentes, caractérisé en ce que l'unité de contacteur (115) présente une rigidité plus importante vis-à-vis du mouvement du nez de contact (140) dans la direction de l'axe de déplacement (200) que dans la direction transversale à l'axe de déplacement (200).
  6. Module de clé (100) selon l'une des revendications précédentes, caractérisé en ce que l'unité de contacteur (115) présente, dans la zone du nez de contact (140), une portion de frappe (610) formée pour frapper le nez de contact (140) sur au moins une portion (110) de l'élément de boîtier (130, 110), en particulier dans lequel la portion de frappe (610) comprend une surface orientée sensiblement parallèlement à la au moins une portion (100) de l'élément de boîtier (130, 110) et/ou dans lequel la portion de frappe (610) est formée par une partie coudée de l'unité de contacteur (115).
  7. Module de clé (100) selon l'une des revendications précédentes, caractérisé en ce que le nez de came (135) de l'élément d'actionnement (105) comprend au moins une portion de surface de réarmement (700), qui présente une surface orientée obliquement par rapport à la direction de l'axe de déplacement (200), en particulier dans lequel la portion de surface de réarmement (700) est formée pour guider le nez de contact (140) autour du nez de came (135) lors du réarmement de l'élément d'actionnement (105).
  8. Module de clé (100) selon la revendication 7, caractérisé en ce que l'unité de contacteur (115) présente, dans la zone du nez de contact (140), une portion de surface (500) dont la surface est orientée obliquement par rapport à la direction de l'axe de déplacement (200), en particulier dont la surface est orientée au maximum sous un angle aigu par rapport à la portion de surface de réarmement (700).
  9. Module de clé (100) selon l'une des revendications précédentes, caractérisé en ce qu'au moins une partie (110) de l'élément de boîtier présente une pente de recouvrement (225) avec une surface oblique par rapport à la direction de l'axe de mouvement (200) dans la zone d'une ouverture (215) à travers laquelle l'élément d'actionnement (105) est guidé, et/ou dans lequel l'élément d'actionnement (105) présente une pente de poussoir (220) avec une surface oblique par rapport à la direction de l'axe de mouvement (200) dans une zone de passage (210) entourée par la au moins une partie (110) de l'élément de boîtier.
  10. Module de clé (100) selon l'une des revendications précédentes, caractérisé par au moins un élément d'étanchéité (150), qui est disposé entre au moins une partie (110) de l'élément de boîtier et une autre partie (130) de l'élément de boîtier, l'élément d'étanchéité (150) étant notamment disposé dans une rainure de la au moins une partie (110) de l'élément de boîtier et/ou dans une rainure de l'élément de boîtier (130).
  11. Module de clé (100) selon la revendication 10, caractérisé en ce que l'élément d'étanchéité (150) entoure de manière étanche aux fluides la zone de l'élément d'actionnement (105), de l'unité de contacteur (115) et de l'élément de contact (120), en particulier dans lequel l'élément d'étanchéité (150) est formé sous la forme d'un joint à labyrinthe ou comme un joint à labyrinthe.
  12. Module de clé (100) selon l'une des revendications précédentes, caractérisé en ce que la au moins une partie (110) de l'élément de boîtier comprend au moins un élément de guidage de lumière (1210), en particulier dans lequel l'élément de guidage de lumière (1210) est formé au moins partiellement de manière annulaire autour d'une région dans laquelle l'élément d'actionnement (105) est guidé à travers la au moins une partie (110) de l'élément de boîtier.
  13. Module de clé (100) selon l'une des revendications précédentes, caractérisé en ce que l'élément d'actionnement (105) comprend, dans une zone de passage (210) dans laquelle il fait saillie à travers la au moins une partie (110) de l'élément de logement, une partie cylindrique de support de tête de clé (160) et au moins une nervure (170) extérieure (167) sur une partie de guidage (165) adjacente à la partie de support de tête de clé (160), et dans lequel l'élément de logement (130) comprend, pour loger la partie de guidage (165) de l'élément d'actionnement (105), au moins un bol de logement (175) avec au moins un évidement (1100) pour loger la nervure (170) de l'élément d'actionnement (105).
  14. Module de clé (100) selon la revendication 13, caractérisé en ce que l'élément d'actionnement (105) comprend, dans la zone de la partie de guidage (165), une partie au moins partiellement cylindrique creuse (180), en particulier dans lequel la au moins une nervure (170) est formée sur un côté extérieur (167) de la partie cylindrique creuse (180), et/ou dans lequel un piston de guidage (235) de l'élément de boîtier (130) s'engage dans la partie cylindrique creuse (180) de la partie de guidage de l'élément d'actionnement (105).
  15. Module de clé (100) selon l'une des revendications précédentes, caractérisé par un élément amortisseur (230), qui est disposé entre l'élément d'actionnement (105) et l'élément de boîtier (130), en particulier dans lequel l'élément amortisseur (230) est formé de manière cylindrique ou annulaire.
EP19724194.6A 2018-05-16 2019-05-14 Module de touche Active EP3794623B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018111707.8A DE102018111707A1 (de) 2018-05-16 2018-05-16 Tastenmodul
PCT/EP2019/062283 WO2019219643A1 (fr) 2018-05-16 2019-05-14 Module de touche

Publications (2)

Publication Number Publication Date
EP3794623A1 EP3794623A1 (fr) 2021-03-24
EP3794623B1 true EP3794623B1 (fr) 2023-03-01

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ID=66542272

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Application Number Title Priority Date Filing Date
EP19724194.6A Active EP3794623B1 (fr) 2018-05-16 2019-05-14 Module de touche

Country Status (5)

Country Link
US (1) US11380496B2 (fr)
EP (1) EP3794623B1 (fr)
CN (1) CN112106163B (fr)
DE (1) DE102018111707A1 (fr)
WO (1) WO2019219643A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018172468A1 (fr) * 2017-03-24 2018-09-27 Cherry Gmbh Module de touche

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8818351D0 (en) 1988-08-02 1988-09-07 Acer Inc Keyboard switch
CN204905117U (zh) 2015-08-13 2015-12-23 惠州冠泰电子有限公司 一种带有响声的按键弹起结构
TWI603357B (zh) * 2016-02-02 2017-10-21 達方電子股份有限公司 發光按鍵結構
TWI607476B (zh) 2016-02-03 2017-12-01 達方電子股份有限公司 按鍵結構
TW201837943A (zh) * 2017-03-31 2018-10-16 致伸科技股份有限公司 鍵盤裝置及其按鍵結構
TW201901721A (zh) * 2017-05-12 2019-01-01 致伸科技股份有限公司 鍵盤裝置
TW201916082A (zh) * 2017-09-15 2019-04-16 致伸科技股份有限公司 按鍵結構

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018172468A1 (fr) * 2017-03-24 2018-09-27 Cherry Gmbh Module de touche

Also Published As

Publication number Publication date
DE102018111707A1 (de) 2019-11-21
WO2019219643A1 (fr) 2019-11-21
EP3794623A1 (fr) 2021-03-24
US11380496B2 (en) 2022-07-05
CN112106163A (zh) 2020-12-18
US20210175027A1 (en) 2021-06-10
CN112106163B (zh) 2023-04-07

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