EP3704725B1 - Key module for a keyboard, and keyboard - Google Patents

Description

The present invention relates to a key module for a keyboard and to a keyboard with at least one such key module.

In the case of keyboards, such as are used in connection with computers, different key systems can be used.

the EP 1 612 821 A2 discloses a tactile switch, a keyboard, and a tactile switch assembly jig. In the U.S. 2001/0007301 A1 a key switch device, a keyboard with the key switch device, and an electronic device with the keyboard are described. the CN 104299828A shows an ultra-thin keyboard switch. the U.S. 2001/0027914 A1 discloses a button or push button button with scissors mechanism. In the US 2014/0339064 A1 a key switch with scissors mechanism and a keyboard with the key switch are shown. the CN 105023789A shows a keyboard switch with a linearly guided key plunger. the CN 204332781 U discloses an illuminated keyboard switch with a linearly guided key plunger.

Against this background the present invention provides an improved key module for a keyboard and an improved keyboard according to the independent claims. Advantageous configurations result from the dependent claims and the following description.

According to embodiments of the approach described here, a mechanical system or guiding mechanism can be provided for a key module, which has a double-wing unit and an elastic means coupled to the double-wing unit. The guide mechanism can be formed in order to bring about, for example, a parallel, synchronous and backlash-free or low-backlash guidance or parallel guidance of an upper part of the key module. In particular, the double unit and the elastic means are also designed in connection with a switching unit to, with regard to actuation of the Key module provide a restoring force and cause a specific force-displacement curve and make it adjustable.

Advantageously, a very flat mechanical switch module can be provided, for example for games or gaming applications, high-end office applications or office applications in the upscale segment and the like. The switch module can be used in notebooks and flat keyboards, for example. The force-displacement curve of the button module with regard to an actuation can be provided by the manufacturer, by the customer and additionally or alternatively be set by the user. The button module can, for example, allow customer-specific further processing by the user. A service life of the key module can also be achieved which can be in the range of classic mechanical key modules, for example. In addition, the key module can support a uniform and economical illumination of a key cap or an upper part by a light source or light source that can be integrated. Such a key module can, for example, also meet very flat dimensions, such as a block dimension of 1 to 4 millimeters, in particular a block dimension of up to about 2 millimeters.

• ein erstes Flügelelement und ein zweites Flügelelement zum Führen einer Bewegung des Tastenmoduls bei einer Betätigung, wobei jedes Flügelelement einen Steg, einen ersten Arm und einen zweiten Arm aufweist, wobei die Arme sich von dem Steg weg erstrecken, wobei an dem Steg ein Befestigungsabschnitt ausgeformt ist, wobei an dem ersten Arm ein erster Lagerabschnitt zum Lagern des Flügelelements ausgeformt ist, wobei an dem zweiten Arm ein zweiter Lagerabschnitt zum Lagern des Flügelelements ausgeformt ist, wobei das erste Flügelelement und das zweite Flügelelement mechanisch miteinander koppelbar sind;
• zumindest ein Federelement zum Bereitstellen einer Rückstellkraft bei der Betätigung des Tastenmoduls, wobei das zumindest eine Federelement an dem Befestigungsabschnitt des ersten Flügelelements und dem Befestigungsabschnitt des zweiten Flügelelements befestigbar ist, wobei das zumindest eine Federelement als eine Zugfeder ausgeformt ist; und
• ein Trägerelement zum Tragen der Flügelelemente, wobei in dem Trägerelement eine Mehrzahl von Aufnahmeabschnitten zur Aufnahme der Lagerabschnitte der Flügelelemente ausgeformt sind; und
• zumindest einen Nocken zum Verformen des zumindest einen Federelements in einem betätigten Zustand des Tastenmoduls.

A key module for a keyboard is presented, the key module having the following features:

• a first wing member and a second wing member for guiding movement of the key module upon actuation, each wing member having a ridge, a first arm and a second arm, the arms extending from the ridge, the ridge having a mounting portion formed thereon wherein a first bearing portion for supporting the wing member is formed on the first arm, wherein a second bearing portion for supporting the wing member is formed on the second arm, wherein the first wing member and the second wing member are mechanically coupled to each other;
• at least one spring element for providing a restoring force when the button module is actuated, wherein the at least one spring element can be fastened to the fastening section of the first wing element and the fastening section of the second wing element, the at least one spring element being formed as a tension spring; and
• a support member for supporting the wing members, wherein a plurality of accommodating portions for accommodating the bearing portions of the wing members are formed in the support member; and
• at least one cam for deforming the at least one spring element in an actuated state of the button module.

The keyboard can be provided for a computer or the like, for example. The keyboard can have at least one key module. The button module can be part of a key or represent a key. One key module can thus be provided for each key. The button module can also be referred to as a mechanical button. The at least one spring element can also be referred to as an elastic means. The receiving sections of the carrier element can be formed as bearing notches, incisions or the like. In other words, the receiving sections of the carrier element can be formed in a notch shape, a V shape and additionally or alternatively in a dovetail shape. The carrier element can be formed in one piece.

According to one embodiment, each wing element can have coupling sections for mechanically coupling the wing elements to one another. Here, a first coupling portion may be formed at an end of the first arm of each wing member. A second coupling portion may be formed at an end of the second arm of each wing member. Such an embodiment offers the advantage that the wing elements can be coupled to one another in a simple manner, and quick and easy assembly can also be made possible.

The first coupling section and the second coupling section can be shaped differently. The first coupling section of the first wing element can be coupled to the second coupling section of the second wing element. The second coupling section of the first wing element can be coupled to the first coupling section of the second wing element. Thus, the first coupling sections can be shaped complementarily to the second coupling sections. Such an embodiment offers the advantage that the wing elements can be coupled to one another safely and reliably. In addition, the wing elements can be formed as identical parts.

In particular, the first coupling section can be formed as a link and the second coupling section can be formed as a projection section. Alternatively, the first coupling section and the second Coupling section be formed as teeth. Such an embodiment offers the advantage that mechanical decoupling can be achieved.

The first wing element and the second wing element can also be shaped identically to one another. Additionally or alternatively, each wing element can be formed in one piece. Additionally or alternatively, each wing element can be formed from a metal material. In particular, the wing elements can be designed as stamped parts and additionally or alternatively as identical parts. Such an embodiment offers the advantage that production of the wing elements can be simplified and reduced in cost. In addition, the stability of the wing elements can be increased.

Furthermore, each wing element can have at least one connecting section for connecting the wing element to an upper part for the key module. In this case, the upper part can have a key cap or can be coupled to a key cap. The keycap may represent a part of the key that is visible to an operator and operable by depressing it. Such an embodiment offers the advantage that a simple and secure mechanical connection between the elements and a one-piece upper part or two-part upper part or upper part and key cap can be made possible.

The at least one connecting section can be formed as an elastically deformable bar section or as an elastically deformable bar section with an end section that is bent into a base area of the web. In this case, the bent end section can be arranged between the web of the wing element and the carrier element when the key module is in a mounted state. Thus, when the upper part is assembled, the beam section can be supported against the carrier element, and when the upper part is dismantled, the beam section can be supported against the web. Such an embodiment offers the advantage that simple and reliable assembly and disassembly of the upper part on or from the wing elements can be made possible.

According to one embodiment, the carrier element can have solder pads or connection pins for attaching the carrier element to a circuit substrate of the keyboard. Additionally or alternatively, the carrier element can be formed from a metal material. Such an embodiment offers the advantage that the button module can be attached directly to a printed circuit board or the like. Furthermore, the carrier element can be of robust design. The carrier element can also have at least one anchoring section for anchoring a stabilizer bracket for stabilizing an upper part for the key module with regard to torques and bending moments. The at least one anchoring section can be shaped as an ear, an eyelet or the like. Such an embodiment offers the advantage that the stabilizer bracket can be attached directly to the button module. This means that an integrated solution for additional stabilization can be implemented, especially for long keys.

According to the invention, the at least one spring element is designed as a tension spring. Such an embodiment offers the advantage that a restoring force can be provided that is structurally simple, reliable and adjustable by replacing the at least one spring element.

According to the invention, at least one cam is provided for deforming the at least one spring element when the key module is in an actuated state. In this case, the at least one cam can be formed on the carrier element, on a switching unit and additionally or alternatively on an upper part for the key module. The upper part can have a key cap or can be coupled to a key cap. The at least one cam can also be referred to as a projection element, a tooth, a nose or the like. Such an embodiment offers the advantage that a simple deformation of the at least one spring element can be achieved, with a loss of their linear deformation behavior leading to a higher resistance to a operating force can lead. Thus, a force-displacement curve can be advantageously influenced with regard to an actuation of the button module, among other things by a geometry of the at least one cam.

Furthermore, the button module can have a switching unit. The switching unit can have a housing and a contact device, which is arranged at least partially in the housing, for establishing an electrical contact when the key module is actuated. The contact device can have a fixed contact piece with a first contact and a contactor with a first spring clip carrying a second contact and additionally or alternatively a second spring clip for generating an actuation noise and additionally or alternatively at least one actuation section. The contactor can be formed in one piece. The contactor can have either the first spring shackle and at least one actuating section or the first spring shackle, the second spring shackle and at least two actuating sections. The at least one actuating section can be pressed by the upper part or an auxiliary actuator. The electrical contact can be established at a contact point between the first contact and the second contact. Each contact can be elongate and additionally or alternatively have a linear contact area. A contact area of the first contact and a contact area of the second contact can cross. Each contact area can extend obliquely to a longitudinal axis of the spring clip. The second spring tab can have an actuating section that is angled, kinked, or curved. The second spring tab may be shaped to produce the actuation sound upon rebound against the housing. Such an embodiment offers the advantage that the electrical contact can be made reliably, it being possible for the force-displacement curve of an actuation to be influenced by a suitable design of the contact device. In addition, an actuation noise can optionally be implemented in a simple manner. In this case, the switching unit can enable both the function of making electrical contact and acoustic feedback. This can be realized by the one-piece contactor with the at least one spring clip.

The housing can be formed at least in a section from a transparent or opaque material and additionally or alternatively at least in a section as at least one lens. Additionally or alternatively, the housing can have a receiving bay for a light source. Additionally or alternatively, at least one groove for receiving at least a partial section of the at least one spring element can be formed in the housing when the key module is in an actuated state. The at least one groove can also be referred to as a depression section, an elongate trough or a groove. The at least one lens may be configured to distribute light from a light source across the top of the key module and additionally or alternatively across the keycap. The at least one lens can be configured to focus or diffuse light. For example, the at least one lens can be designed as an optical diffuser. Such an embodiment offers the advantage that the button can be illuminated in a space-saving manner and, additionally or alternatively, installation space for the button module can be saved by at least partially immersing the at least one spring element in the groove.

In this case, the contact device can also have soldering pads or connection pins for attaching the switching unit to a circuit substrate of the keyboard. Additionally or alternatively, the contact device can be formed in order to produce the electrical contact by generating friction between the first contact and the second contact. Such an embodiment offers the advantage that a deterioration in contact due to contamination by particles can be avoided.

In addition, the key module can have an upper part. In this case, the upper part can have a key cap or can be coupled to a key cap. Additionally or alternatively, at least one groove for receiving at least a partial section of the at least one spring element can be formed in the upper part when the key module is in an actuated state.

Furthermore, the key module can have a stabilizer bracket for stabilizing an upper part for the key module with regard to torques and bending moments. The stabilizer bar can be anchored to the carrier element of the key module.

According to one embodiment, the housing can have an actuation opening for exposing the at least one actuation section of the contact device. Additionally or alternatively, the housing can have a deflection section for deflecting the second spring clip of the contact device when the key module is actuated. Here, the deflection portion may be formed obliquely inclined relative to the movement of the key module upon actuation. The deflection section can be curved, slightly stepped, shaped as a nub or cam, or the like. The deflection section can be designed to bring about a deflection or deflection of the second spring clip transversely or obliquely with respect to the movement of the key module during actuation when the key module is actuated. An angle of inclination of the deflection section relative to the movement of the button module during actuation can be smaller than an angle of inclination of an angled or kinked actuation section of the second spring clip. Such an embodiment offers the advantage that simple and reliable actuation of the contact device can be made possible through the actuation opening. Additionally or alternatively, a defined and low-friction deflection or deflection of the second spring shackle can be achieved in order to cause the second spring shackle to snap back for the purpose of generating noise.

The button module can also have an auxiliary actuator for actuating the contact device. In this case, the housing can have at least one holding section for holding the manual actuator. The auxiliary actuator may have at least one attachment portion for movably attaching the auxiliary actuator to the at least one mounting portion of the housing. Additionally or alternatively, the auxiliary actuator can have at least one lug for deflecting the first spring clip and additionally or alternatively the second spring clip of the contact device when the key module is actuated. Using the bracket portion and the attachment portion, a movable attachment of the auxiliary actuator to the housing can be effected, wherein the movable attachment can be, for example, articulated or translational. The second spring tab may be shaped to produce the actuation sound upon rebound against the auxiliary actuator. The auxiliary actuator can have a lug for deflecting the first spring shackle and additionally or alternatively the second spring shackle or at least one first lug for deflecting the first spring shackle and a second lug for deflecting the second spring shackle. Such an embodiment offers the advantage that the contact device can be actuated in a robust and simple manner, with an embodiment variant of the contactor having one spring shackle or two spring shackles being structurally flexible.

Furthermore, the auxiliary actuator can have at least one fixing section for fixing the auxiliary actuator to the first wing element or the second wing element. The auxiliary actuator can be carried along or moved along with the at least one fixing section when the key module is actuated by at least one of the wing elements in at least one direction of movement. In this case, the at least one fixing section can be formed as a projection. Such an embodiment offers the advantage that when the button module is actuated, an electrical contact can be produced and, additionally or alternatively, an integrated generation of the actuation noise can be achieved in a reliable and robust manner. Furthermore, this can be achieved involving a minimum number of components and in a structurally simple manner.

• zumindest ein Exemplar einer Ausführungsform des vorstehend genannten Tastenmoduls; und
• ein Schaltungssubstrat, wobei das zumindest eine Tastenmodul an dem Schaltungssubstrat angeordnet ist.

A keyboard is also presented, the keyboard having the following features:

• at least one example of an embodiment of the aforementioned button module; and
• a circuit substrate, wherein the at least one key module is arranged on the circuit substrate.

Thus, at least one key module mentioned above can be used or used in connection with the keyboard. The at least one key module can be attached directly to the circuit substrate, for example by means of soldering or by inserting contact pins.

The key module described can be used as a replacement for existing key modules, for example for key modules with a linear guide. Such modules are robust, reliable, durable and have a classic switching mechanism with precious metal contacts and metal return springs. The mechanical concept allows the realization of precise, low-tilting linear movements with large actuation paths, e.g. B. 3 to 4 millimeters, and is one of the classic mechanical switches. Switches with different force-displacement curves and with linear force-displacement curves, with tactile curves or with a noticeable pressure point and with click curves or curves that can be felt and heard are widespread. Embodiments of the button module described here avoid the disadvantages of such existing button modules and still have the advantages mentioned above and also a lower overall height than the modules mentioned above. For this reason, embodiments of the key module described can be used not only for flat keyboards but also for notebooks or the like.

The button module described can also be used as a replacement for button modules with a scissor mechanism as a parallel guide and with a rubber bell as a switching mechanism. Key modules with a scissor mechanism have a flat design combined with relatively large actuation paths. The functionalities of guidance and force-displacement curve are usually separate, so that the scissor mechanism takes on the function of guidance or parallel guidance and a rubber bell or snap-action disc forms a switching mechanism and is responsible for the specific force-displacement curve. Unlike the scissors mechanism with numerous, partly unstable levers with many hinges, e.g. B. six hinges and four links, according to embodiments of the approach described here, for example, the parallel guidance can be made stable and precise, rigidity against tilting can be provided and a service life can be extended. In addition, noise during actuation can be minimized. According to embodiments, a force-displacement characteristic and reliability that is stable over the service life of the module can also be achieved, in contrast to some silicone rubber bells due to the setting behavior.

A double wing mechanism or butterfly mechanism is not very common. Either classic rubber bells with and without switching membranes or metal snap-action discs are used as switching mechanisms. As known from Mechanics Basics, the wings of the dual wing mechanic are half the length of the levers of the scissor mechanic. Because of this, such mechanisms are more rigid against tilting compared to scissor mechanisms. With the same angular position of the levers, an actuation path is half as large as with scissor mechanisms. The wings of the mechanics are often realized as a connection by means of a film hinge. However, a pseudo-parallel movement can occur if only one wing is rotatably mounted and the second wing is implemented as a link. This leads to a displacement of the key cap transversely to an actuation direction during actuation. A snap disk can also be selected as the rear derailleur. Here, too, the double-wing mechanism assumes the role of parallel guidance, while the snap-action disc forms a switching mechanism and ensures a specific force-displacement curve and reset. Hinges can introduce play and affect tilting stiffness. Key modules with the double-wing mechanism have advantages in terms of rigidity against tilting and parallelism. Embodiments of the button module described here can avoid disadvantages and achieve the advantages mentioned above and also advantages with regard to the overall actuation path.

• Fig. 1 eine schematische Darstellung einer Tastatur mit Tastenmodulen gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• Fig. 2 eine partielle Explosionszeichnung eines Tastenmoduls gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• Fig. 3 eine partielle Explosionszeichnung des Tastenmoduls aus Fig. 2 in einem teilweise zusammengefügten Zustand;
• Fig. 4 eine schräge Draufsicht auf das Tastenmodul aus Fig. 2 bzw. Fig. 3 in einem zusammengefügten Zustand;
• Fig. 5 eine schräge Unteransicht des Tastenmoduls aus Fig. 4;
• Fig. 6 eine schräge Draufsicht auf das Tastenmodul aus den Figuren 2 bis Fig. 5 in einem zusammengefügten Zustand und ohne Tastenkappe;
• Fig. 7 eine Schrägansicht eines Teilabschnitts des Tastenmoduls aus den
• Figuren 2 bis Fig. 6;
• Fig. 8 eine Seitenansicht des Tastenmoduls aus Fig. 4 bzw. Fig. 5;
• Fig. 9 eine Seitenansicht des Tastenmoduls aus Fig. 4 bzw. Fig. 5;
• Fig. 10 eine Draufsicht auf eine Tastenkappe;
• Fig. 11 eine Seitenansicht des Tastenmoduls aus Fig. 6;
• Fig. 12 eine Seitenansicht des Tastenmoduls aus Fig. 4 bzw. Fig. 5;
• Fig. 13 eine Draufsicht auf das Tastenmodul 120 aus Fig. 6, Fig. 11 bzw. Fig. 12;
• Fig. 14 eine Kontakteinrichtung für ein Tastenmodul gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• Fig. 15 die Kontakteinrichtung aus Fig. 14;
• Fig. 16 eine Kontakteinrichtung für ein Tastenmodul gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• Fig. 17 eine Kontakteinrichtung für ein Tastenmodul gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• Fig. 18 eine Kontakteinrichtung für ein Tastenmodul gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• Fig. 19 eine Schnittdarstellung eines Tastenmoduls gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• Fig. 20 eine partielle Explosionszeichnung eines Tastenmoduls gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• Fig. 21 eine partielle Explosionszeichnung eines Tastenmoduls gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• Fig. 22 eine Schrägansicht eines Teilabschnitts eines Tastenmoduls gemäß einem Ausführungsbeispiel das nicht zur vorliegenden Erfindung gehört;
• Fig. 23 eine partielle Explosionszeichnung eines Tastenmoduls gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• Fig. 24 eine partielle Explosionszeichnung von Teilen des Tastenmoduls aus Fig. 23;
• Fig. 25 eine schräge Draufsicht auf die Schalteinheit und das Trägerelement aus Fig. 23 bzw. Fig. 24 in einem teilweise zusammengesetzten Zustand;
• Fig. 26 die Kontakteinrichtung aus Fig. 23, Fig. 24 bzw. Fig. 25;
• Fig. 27 den Hilfsbetätiger aus Fig. 23 bzw. Fig. 24 in einer schrägen Unteransicht;
• Fig. 28 den Hilfsbetätiger aus Fig. 23, Fig. 24 bzw. Fig. 27 in einer schrägen Draufsicht;
• Fig. 29 eine partielle Explosionszeichnung von Teilen des Tastenmoduls aus Fig. 24 in einem teilweise zusammengesetzten Zustand;
• Fig. 30 eine schräge Draufsicht auf das Tastenmodul aus Fig. 24 bzw. Fig. 29 in einem montierten und unbetätigten Zustand;
• Fig. 31 eine schräge Draufsicht auf das Tastenmodul aus Fig. 24, Fig. 29 bzw. Fig. 30 in einem montierten und betätigten Zustand;
• Fig. 32 eine Seitenansicht des Tastenmoduls aus Fig. 30 ; und
• Fig. 33 eine Teilschnittdarstellung des Tastenmoduls aus Fig. 32.

The invention is explained in more detail by way of example with reference to the attached drawings. Show it:

• 1 a schematic representation of a keyboard with key modules according to an embodiment of the present invention;
• 2 a partial exploded view of a key module according to an embodiment of the present invention;
• 3 a partial exploded view of the key module 2 in a partially assembled state;
• 4 an oblique top view of the button module 2 or. 3 in an assembled state;
• figure 5 an oblique bottom view of the button module 4 ;
• 6 an oblique plan view of the button module from the Figures 2 to 5 in an assembled state and without a keycap;
• 7 an oblique view of a portion of the button module of the
• Figures 2 to 6 ;
• 8 a side view of the button module 4 or. figure 5 ;
• 9 a side view of the button module 4 or. figure 5 ;
• 10 a plan view of a key cap;
• 11 a side view of the button module 6 ;
• 12 a side view of the button module 4 or. figure 5 ;
• 13 Figure 12 shows a top view of button module 120 6 , 11 or. 12 ;
• 14 a contact device for a key module according to an embodiment of the present invention;
• 15 the contact device 14 ;
• 16 a contact device for a key module according to an embodiment of the present invention;
• 17 a contact device for a key module according to an embodiment of the present invention;
• 18 a contact device for a key module according to an embodiment of the present invention;
• 19 a sectional view of a key module according to an embodiment of the present invention;
• 20 a partial exploded view of a key module according to an embodiment of the present invention;
• 21 a partial exploded view of a key module according to an embodiment of the present invention;
• 22 an oblique view of a partial section of a key module according to an embodiment not belonging to the present invention;
• 23 a partial exploded view of a key module according to an embodiment of the present invention;
• 24 a partial exploded view of parts of the key module 23 ;
• 25 an oblique plan view of the switching unit and the carrier element 23 or. 24 in a partially assembled condition;
• 26 the contact device 23 , 24 or. 25 ;
• 27 the auxiliary actuator 23 or. 24 in an oblique bottom view;
• 28 the auxiliary actuator 23 , 24 or. 27 in an oblique plan view;
• 29 a partial exploded view of parts of the key module 24 in a partially assembled condition;
• 30 an oblique top view of the button module 24 or. 29 in an assembled and unactuated condition;
• 31 an oblique top view of the button module 24 , 29 or. 30 in an assembled and actuated condition;
• 32 a side view of the button module 30 ; and
• Figure 33 a partial sectional view of the button module 32 .

In the following description of preferred exemplary embodiments of the present invention, the same or similar reference symbols are used for the elements which are shown in the various figures and have a similar effect, with a repeated description of these elements being dispensed with.

1 shows a schematic representation of a keyboard 100 with key modules 120 according to an embodiment. The keyboard 100 is, for example, part of a notebook computer, laptop computer or the like. Alternatively, the keyboard 100 is designed in particular as a peripheral device for a computer.

The keyboard 100 has a circuit substrate 110 . The circuit substrate 110 is, for example, a circuit board, circuit board or the like. According to the 1 In the exemplary embodiment illustrated, the keyboard 100 has a plurality of key modules 120 . The key modules 120 are arranged on the circuit substrate 110 . Here, the key modules 120 are soldered onto the circuit substrate 110, for example.

Furthermore, according to in 1 shown and described embodiment on each key module 120 a key cap 125 attached. In this case, each key cap 125 is coupled to its own key module 120 . Each unit of key module 120 and key cap 125 represents a key on keyboard 100. Alternatively, each key module 120 represents a key on keyboard 100. Key modules 120 in particular will be discussed in more detail with reference to the following figures.

Keycap 125 represents a portion of a key that a user of keyboard 100 can see and touch. A key module 120 is actuated by pressing the key cap 125. Each key module 120 is designed to react to an actuation force with a force-displacement characteristic of a resistance or a restoring force. Furthermore, each button module 120 is designed to produce an electrical connection in response to an actuation with a predefinable actuation path, with a switching process being carried out.

2 12 shows a partially exploded view of a key module 120 according to an exemplary embodiment. The button module 120 corresponds to or resembles the button module 1 . According to the 2 illustrated embodiment, the key module 120 also has the key cap 125 . Alternatively, the key cap 125 is provided separately from the key module 120 and can be coupled to the same. In a state of the key top 125 mounted on the key module 120, the key module 120 and the key top 125 represent a key. The key cap 125 represents an upper part of the key module 120 or for the key module 120. At least one alphanumeric character or a special character is printed on the key cap 125.

The key module 120 has a first wing element 230 and a second wing element 230 for guiding a movement of the key module 120 when operated by a user. The two wing elements 230 are mechanically coupled to one another. In the representation of 2 1, the wing members 230 are shown in an unactuated state of the button module 120. FIG. In the unactuated state, the mechanically coupled wing members 230 subtend an obtuse angle of repose therebetween. When the button module 120 is in an actuated state, the wing elements 230 coupled to one another span an opening angle between them which is greater than the rest angle. The opening angle can also be 180 degrees. A difference between the angle of repose and the angle of opening can be in a range of approximately 12 degrees to 18 degrees, for example.

Each wing member 230 includes a web, a first arm, and a second arm. The arms here extend away from the bridge. In particular, the arms extend perpendicularly from the web. The arms also extend parallel to one another, for example within a tolerance range. Alternatively, the arms can also extend obliquely with respect to one another. According to the 2 illustrated embodiment, the first wing member 230 and the second wing member 230 are formed identical to each other. In addition, each wing element 230 is formed in one piece. Also, for example, each wing member 230 is formed of a metal material. The manner in which the wing elements 230 are shaped and coupled to one another will also be discussed in more detail with reference to the following figures.

Each of the wing elements 230 has, according to FIG 2 shown and described embodiment, for example, two attachment sections 232 for attaching a spring element and two bearing sections 234 for storing the wing element 230. In this case, the fastening sections 232 are formed on the web of the wing element 230 . The attachment portions 232 are as Through openings, in particular as rounded triangular through openings, formed in the wing element 230. The bearing portions 234 are formed on the arms of the wing member 230 . A first bearing section 234 is formed on the first arm and a second bearing section 234 is formed on the second arm. The bearing portions 234 are formed as ledges, steps, or lugs in outer side edges of the arms of the wing member 230 .

Each wing member 230 also includes at least one connecting portion 236 for connecting the wing member 230 to an upper part for the button module 120 . Here, the upper part has the key cap 125 . According to the 2 In the embodiment shown, each wing element 230 has a connecting section 236 by way of example. The connecting portion 236 is formed on the ridge of the wing member 230 . In this case, the connecting section 236 is formed as an elastically deformable beam section. According to the 2 In the exemplary embodiment shown and described, the connecting section 236, which is designed as an elastically deformable beam section, has an end section 238 which is bent into a base area of the web. The key cap 125 can be connected to the wing elements 230 and thus to the key module 120 via a snap connection by means of the connecting section 236 .

The key module 120 also has at least one spring element 240 for providing a restoring force when the key module 120 is actuated. According to the 2 In the exemplary embodiment shown, the key module 120 has a spring element 240 by way of example. The spring element 240 is attached to one of the attachment sections 232 of the first wing element 230 and to one of the attachment sections 232 of the second wing element 230 . Here, the spring element 240 is designed as a tension spring.

The key module 120 also includes a support member 250 for supporting the wing members 230 . The support member 250 is also configured to support the spring member 240 and optionally the keycap 125 when attached to the wing members 230 . For example this is Support member 250 formed from a metal material. The carrier element 250 has a plurality of receiving sections 252 for receiving the bearing sections 234 of the wing elements 230 . According to the 2 In the exemplary embodiment shown and described, the carrier element 250 has four receiving sections 252 . The receiving sections 252 are formed as bearing notches in the carrier element 250 . In other words, the receiving sections 252 are formed in a notch shape, a V-shape or a dovetail shape. The bearing sections 234 of the wing elements 230 are mounted in the mounting sections 252 when the button module 120 is in an installed state. The wing elements 230 are thus mounted on the carrier element 250 in a pivotable or tiltable manner in a predefinable angular range. The angular range can also be defined by a shape of the receiving sections 252 .

The assembly of wing elements 230 and spring element 240 can also be referred to as a guide system. The carrier element 250 is thus designed to carry at least the guide mechanism.

The button module 120 also has a switching unit 260 . The switching unit 260 has a housing 270 and a contact device 280 . The contact device 280 is at least partially arranged in the housing 270 . In other words, the housing 270 is shaped to accommodate at least a portion of the contactor 280 . In the housing 270 according to in 2 shown exemplary embodiment only a groove 272 for receiving at least a portion of the spring element 240 in an actuated state of the key module 120 formed. The contact device 280 is designed to establish an electrical contact when the key module 120 is actuated. In this case, the contact device 280 can be pressed or deformed, for example, by the key cap 125 in order to bring about the establishment of the electrical contact. The switching unit 260 will be discussed in more detail with reference to the following figures.

3 12 shows a partially exploded view of button module 120. FIG 2 in a partially assembled condition. while showing 3 the button module 120 in one compared to 2 further assembled state. Here, the switching unit 260 is shown in an assembled state, with the contact device 280 being partially accommodated in the housing 270 . Furthermore, the wing elements 230 are mounted on the carrier element 250 . The bearing sections 234 of the wing elements 230 are arranged in the receiving sections 252 of the carrier element 250 .

4 12 shows an oblique top view of the button module 120. FIG 2 or. 3 in an assembled state. Here are from the button module 120 due to the perspective in the representation of 4 the key cap 125 and the carrier element 250 visible. In the assembled state of the key module 120, the key cap 125 is connected to the wing elements and the switching unit is arranged surrounded by the webs and arms of the wing elements.

figure 5 12 shows an oblique bottom view of button module 120. FIG 4 . The key cap 125, the wing elements 230 with two of the four fastening sections 232, two of the four bearing sections 234 and one of the two connecting sections 236 with the bent end section 238 are shown here from the key module 120. Furthermore, the carrier element 250 with two of the receiving sections 252 and soldering surfaces 554, the housing 270 with a receiving bay 574 and the contact device 280 with soldering surfaces 582 are shown.

The solder pads 554 of the support member 250 are used to attach the support member 250 to a circuit substrate of a keyboard. The solder pads 582 of the contact means 280 of the switching unit are used to attach the switching unit to the circuit substrate of the keyboard. Thus, the button module 120 can be assembled directly on the circuit substrate by soldering the pads 554 and 582 onto the circuit substrate.

In the housing 270 of the switching unit, the receiving bay 574 for receiving a light source is formed. The light source can be, for example, a light-emitting diode for surface mounting or an SMD-LED (SMD=surface-mounted device; LED=light-emitting diode). Furthermore, the housing is 270 according to an exemplary embodiment, at least in a partial section, it is formed from a transparent or opaque material, in particular a plastic material.

In the representation of figure 5 it can be seen that the switching unit with the housing 270 and the contact device 280 is arranged in an installation space which is surrounded by the webs and arms of the wing elements 230 .

According to another embodiment, in particular as an alternative to the solder pads 554 and 582, the carrier element and the switching unit can be attachable to the circuit substrate of the keyboard by means of connection pins.

6 12 shows an oblique top view of the button module 120. FIG Figures 2 to 5 in an assembled condition and without the keycap. Thus, the representation in 6 the representation 2 or. 3 except that the keycap is omitted and the key module 120 is shown in the assembled state.

7 Figure 12 shows an oblique view of a portion of the button module Figures 2 to 6 . the inside 7 Illustrated section of the key module includes the guide mechanism or the wing elements 230 and the spring element 240. In the representation of 7 Here, the attachment sections 232, the bearing sections 234, the connecting sections 236 and the first coupling sections 731 and second coupling sections 733 of the wing elements 230 are shown.

The coupling portions 731, 733 are formed to mechanically couple the wing members 230 to each other. Each wing element 230 has a first coupling portion 731 and a second coupling portion 733 . Here, the first coupling portion 731 is formed at an end of the first arm of each wing member 230 and the second coupling portion 733 is formed at an end of the second arm of each wing member 230 . The first coupling portion 731 and the second coupling portion 733 each Wing element 230 are shaped differently. All of the first coupling sections 731 are shaped in the same way and all of the second coupling sections 733 are shaped in the same way. Thus, the first coupling section 731 of the first wing element 230 can be coupled to the second coupling section 733 of the second wing element 230 and the second coupling section 733 of the first wing element 230 can be coupled to the first coupling section 731 of the second wing element 230 . According to the exemplary embodiment illustrated here, the first coupling section 731 is shaped as a gate and the second coupling section 733 is shaped as a projection section or a plate. According to another embodiment, the first coupling section and the second coupling section can be formed as teeth.

8 12 shows a side view of button module 120. FIG 4 or. figure 5 . Here are in the side view of 8 represented by the key module 120, the key cap 125, the wing elements 230 with two of the bearing sections 234, the carrier element 250 with two of the receiving sections 255 and the housing 270 of the switching unit.

9 12 shows a side view of button module 120. FIG 4 or. figure 5 . The in 9 illustrated side view of the side view 8 except that the button module is 120 in 9 compared to the representation 8 is rotated a quarter turn about a direction orthogonal to a character printed surface of the key cap 125 . In the side view of 9 the key cap 125, the spring element 240, the carrier element 250 and the housing 270 of the switching unit with the groove 272 are shown of the key module 120.

10 FIG. 12 shows a plan view of a key cap 125. The key cap 125 is the key cap from one of the figures described above or a similar key cap.

11 12 shows a side view of button module 120. FIG 6 . The in 11 shown side view of in 9 shown side view with Except that the keycap is omitted. Thus, from the button module 120 in the illustration of FIG 11 one of the wing elements 230 with the connecting portion 236, the spring element 240, the carrier element 250 and the housing 270 of the switching unit with the groove 272 are shown.

12 12 shows a side view of button module 120. FIG 4 or. figure 5 . The in 12 shown side view of in 8 side view shown except that the key cap is omitted. Thus, from the button module 120 in the illustration of FIG 12 the wing elements 230 are shown with two of the bearing sections 234, the spring element 240, the carrier element 250 with two of the receiving sections 255 and the housing 270 of the switching unit.

13 12 shows a top view of the key module 120 from FIG 6 , 11 or. 12 . Here are in the representation of 13 of the button module 120, the wing elements 230 with the fastening sections 232, the connecting sections 236 and the coupling sections 731 and 733, the spring element 240, sections of the carrier element 250, the housing 270 with the groove 272 and sections of the contact device 280 are shown. Furthermore, in 13 webs 1335, first arms 1337 and second arms 1339 of the wing elements 230 are also explicitly referred to. Also shown is a portion 1376 of housing 270 formed as at least one lens. In this case, the groove 272 is arranged between the partial section 1376 and a further partial section of the housing 270 in which the contact device 280 is partially accommodated. Section 1376 of housing 270 is configured to diffuse and/or focus light from a light source. According to one exemplary embodiment, the light source can also be accommodated at least partially in the housing 270 .

14 shows a contact device 280 for a button module according to an embodiment. The contact device 280 corresponds or is similar to the contact device from one of the figures described above. Thus, the contact device 280 can be used as a contact device for a switching unit of a key module from one of the figures described above.

The contact device 280 has a fixed contact piece 1482 and a contactor 1484 . The fixed contact piece 1482 and the contactor 1484 are electrically insulated from one another. A first contact of the contact device 280 is arranged on the fixed contact piece 1482 . A second contact of the contact device 280 is arranged on the contactor 1484 .

The contactor 1484 has a first spring clip 1486 carrying the second contact and two actuating sections 1488, merely by way of example. The first spring clip 1486 can be moved via the actuating sections 1488 until electrical contact is established between the first contact and the second contact. When the key module is actuated, the actuating sections 1488 can be actuated, for example, by an upper part for the key module or the key module. The contactor 1484 is elastically deformable. Thus, the contactor 1484 also functions as an elastic means.

According to one exemplary embodiment, the fixed contact piece 1482 and the contactor 1484 each have at least one soldering surface, as shown in figure 5 are shown.

15 shows the contact device 280 from 14 . More precisely shows 15 the contactor 280 off 14 from a different perspective. Here, the first contact 1583 and the second contact 1585 are also shown and explicitly labeled.

The first contact 1583 has a linear or elongate contact area with a first axis of extension and the second contact 1585 has a linear or elongate contact area with a second axis of extension. The first axis of extension and the second axis of extension cross one another, with electrical and mechanical contact being able to be produced between the first contact 1583 and the second contact 1585 in a punctiform contact section.

According to the exemplary embodiment illustrated here, each axis of extension extends obliquely, in particular at an angle of, for example, 45 degrees with respect to a longitudinal axis or transverse axis of the fixed contact piece 1482 or of the contactor 1484. According to in 15 In the illustrated embodiment, the first contact 1583 and the second contact 1585 each have a triangular sectional profile. For example, contacts 1583 and 1585 are cut from wire and welded to contactor 280 .

16 shows a contact device 280 for a button module according to an embodiment. The contact device corresponds to 280 in 16 the contact device 14 or. 15 with the exception that the contactor 1484 has only one actuating section 1488 and is shaped differently, in particular with regard to the first spring tab 1486 and the actuating section 1488. In other words, the contact device 280 in 16 a structural variant of the contact device 14 or. 15 . Thus, the contactor 280 is similar to FIG 16 the contact device 14 or. 15 . Of the contacts of the contact device 280, only the first contact 1583 is visible due to a perspective selected in the illustration.

17 shows a contact device 280 for a button module according to an embodiment. The contactor 280 in 17 corresponds to the contact device 16 except that the contactor 1484 is shaped differently, particularly with respect to the first spring tab 1486 and the actuation portion 1488 .

18 shows a contact device 280 for a button module according to an embodiment. The contact device corresponds to 280 in 18 the contact device 14 or. 15 with the exception of the fact that the contactor 1484 is shaped differently, in particular with regard to the first spring clip 1486 and the actuating sections 1488. Of the contacts of the contact device 280, only the first contact 1583 is visible due to a perspective selected in the illustration.

Referring to the Figures 14 to 18 it should be noted that the contact device 280, in particular the contactor 1484 with the at least one actuating section 1488 and the first spring clip 1486, is formed in order to establish the electrical contact by generating friction between the first contact 1583 and the second contact 1585.

19 12 shows a sectional view of a button module 120 according to an embodiment. The button module 120 in 19 is similar to the button module 2 , 3 , Figure 4, Figure 5 , 8 or. 9 . From the button module 120 are in 19 in this case the key cap 125 with an upper cam 1928, the wing elements 230, the spring element 240, the carrier element 250 and only by way of example two lower cams 1978 are shown.

The upper cam 1928 is formed as a partial portion of the key top 125 . More specifically, the upper cam 1928 is formed as a portion of the key top 125 protruding toward the spring member 240 . The lower cams 1978 are molded as sections of the housing of the switch unit. The lower cams 1978 are formed as partial sections of the housing that project in the direction of the spring element 240 . For example, the lower cams 1978 are located in the groove of the housing. Thus, spring element 240 is positioned between upper cam 1928 and lower cam 1978 . The cams 1928 and 1978 are formed in order to deform the spring element 240 in an actuated state of the key module 120, more precisely to deform it elastically.

The spring element 240 can be deformed by the cams 1928 and 1978 as the actuation path increases when the button module 120 is actuated. Here, cams 1928 and 1978 are shaped and positioned to flex spring member 240 . When deformed by the cams 1928 and 1978, a spring force of the spring element 240 loses linearity, with the deformed spring element 240 increasing a restoring force counteracting an actuating force or a resistance counteracting an actuating force.

In addition or as an alternative, at least one cam can be formed on the carrier element 250 according to one exemplary embodiment.

20 12 shows a partially exploded view of a key module 120 according to an exemplary embodiment. The key module 120 corresponds to the key module from one of the figures described above, with the exception that the key module 120 has a switching unit with a different contact device 280 and a housing 270 adapted thereto and also an intermediate piece 2025 that can be coupled to the key cap 125. In this case, the key cap 125 and the intermediate piece 2025 represent the upper part for the key module 120. The intermediate piece 2025 can be connected to the wing elements 230 by means of the connecting sections 236. The key cap 125 can be coupled to the intermediate piece 2025 .

21 12 shows a partially exploded view of a key module 120 according to an exemplary embodiment. The button module 120 corresponds to the button module from one of Figures 2 to 9 or. 19 except that the support member 250 includes anchoring portions 2156 for anchoring a stabilizer bracket 2190 for stabilizing an upper part for the button module 120 with respect to torques and bending moments. the

Anchoring portions 2156 are formed in the shape of eyelets. According to the exemplary embodiment shown here, two anchoring sections 2156 are formed on the carrier element 250 by way of example. In this case, the upper part for the key module 120 has the key cap 125 . The stabilizer bracket 1190 is bent in a U-shape. The stabilizer bar 1190 is anchored in the anchoring portions 2156 . According to an exemplary embodiment, the key module 120 has the stabilizer bar 1190 .

22 12 is an oblique view of a portion of a key module according to an embodiment not belonging to the present invention. the inside 22 The section shown corresponds to that in 7 Section shown with the exception that two spring elements 240 are provided, which are designed as compression springs, and in the illustration Carrier element 250 is shown, which is similar to the carrier element from one of the figures described above, the wing elements 230 and the carrier element 250 being structurally adapted to the spring elements 240 in some cases.

Each of the spring members 240 extends along a coupled pair of arms of the wing members 230. The attachment portions of the wing members 230 are shown in FIG 22 covered by the receiving sections 252 having wall sections of the carrier element 250. The wing elements 230 are coupled to one another via the coupling sections 731 and 733 and have the bearing sections 234 and the connecting section 236 .

23 12 shows a partially exploded view of a key module 120 according to an exemplary embodiment of the present invention. The button module 120 according to in 23 The exemplary embodiment of the present invention shown corresponds to the button module from one of the figures described above, with the exception that the housing 270 and the contact device 280 of the switching unit and the connecting section 236 of each wing element 230 are shaped differently and the button module 120 also has an auxiliary actuator 2392.

The representation in 23 is similar to the illustration 2 or 20 . In 23 are of the key module 120 in particular the key cap 125, the wing elements 230 with the fastening sections 232, the bearing sections 234 and the connecting sections 236, the spring element 240, the carrier element 250 with the receiving sections 252, the housing 270 with the groove 272, the partial section 1376, two actuating openings 2371 and a mounting portion 2375, the contact device 280 with the fixed contact piece 1482, the contactor 1484, the first spring clip 1486, two actuating portions 1488 and a second spring clip 2387 and the auxiliary actuator 2392 are shown.

In the housing 270 are according to in 23 illustrated embodiment of the present invention, for example, two actuating openings 2371 for exposing the at least one actuating section 1488 of contact device 280. Furthermore, the housing 270 has at least one holding section 2375 for holding the manual actuator 2392. According to the exemplary embodiment of the present invention illustrated here, the at least one mounting section 2375 is formed as a pin. The housing 270 is arranged on the support element 250 . The auxiliary actuator 2392 is designed to actuate the contact device 280 . In this case, the auxiliary actuator 2392 is formed from a plastic material. In addition to the first spring clip 1486 carrying the second contact, the contactor 1484 of the contact device 280 has the second spring clip 2387 for generating an actuation noise. In this case, the first spring tab 1486 has an actuating section 1488 . Furthermore, the second spring tab 2387 also has an actuating section 1488 . In this case, the contactor 1484 is formed in one piece. In particular, the contactor 1484 is formed as a stamping or stamping and bending from a metal material.

The housing 270, the contact device 280 and the auxiliary actuator 2392 will be discussed in more detail with reference to the following figures.

24 12 shows a partially exploded view of parts of the key module 120. FIG 23 . The representation in 24 the representation 23 except that the key cap is omitted from the illustration.

25 FIG. 12 shows an oblique top view of the switching unit 260 and the carrier element 250. FIG 23 or. 24 in a partially assembled condition. In this case, the contact device is partially accommodated in the housing 270 . The actuation sections 1488 of the contact device can be seen through the actuation openings 2371 of the housing 270 .

26 shows the contact device 280 from 23 , 24 or. 25 . In this case, the first contact 1583 arranged on the fixed contact piece 1482 is also explicitly identified. The first spring tab 1486 and the second spring tab 2187 extend next to each other and over the fixed contact piece 1482. Also is in the representation of 26 It can be seen in more detail that the first spring tab 1486 tapers in the actuation section 1488 . The actuating section 1488 of the second spring shackle 2387 has a kink on a side facing away from the first spring shackle 1486, at which the actuating section 1488 is bent in the direction of the fixed contact piece 1482 and the first spring shackle 1486.

27 shows the auxiliary actuator 2392 23 or. 24 in an oblique view from below. According to the exemplary embodiment of the present invention illustrated here, the auxiliary actuator 2392 has two attachment sections 2794, two lugs 2796 and three fixing sections 2798. The auxiliary actuator 2392 is molded in one piece, for example from a plastic material.

The attachment portions 2794 are shaped to allow the auxiliary actuator 2392 to be movably attached to the at least one mounting portion of the housing of the shift unit. The attachment sections 2794 are formed, for example, in the shape of an arc or a hook and are designed to receive the at least one mounting section by latching or snapping.

The lugs 2796 are formed in order to deflect the first spring shackle and/or the second spring shackle of the contact device when the button module is actuated. According to a further exemplary embodiment, in which the contact device is shaped differently, the auxiliary actuator 2392 can have only one lug 2796 and/or at least one lug 2796 shaped differently.

The fixing portions 2798 are formed to fix the auxiliary actuator 2392 to the first wing member or the second wing member. In this case, the fixing sections 2798 are formed as projections. According to another exemplary embodiment, the auxiliary actuator 2392 can have a different number of fixing sections 2798 and/or fixing sections 2798 shaped differently.

28 shows the auxiliary actuator 2392 23 , 24 or. 27 in an oblique top view. Due to the illustration, one of the lugs 2796 is covered by one of the fixing sections 2798. It can be seen that the fixing sections 2798 are arranged and shaped in order to arrange the web of one of the wing elements between one of the fixing sections 2798 on the one hand and the remaining two fixing sections 2798 on the other hand.

29 12 shows a partially exploded view of parts of the key module 120. FIG 24 in a partially assembled condition. The spring element 240 is hooked into a respective fastening section 232 of the first wing element 230 of the second wing element 230 . Further, the wing members 230 are coupled to each other via their coupling portions. The switching unit and the support member 250 are in the state of 25 shown. The contact device is thus accommodated at least partially in the housing 270 .

30 12 shows an oblique top view of the button module 120. FIG 24 or. 29 in an assembled and unactuated condition. In this case, the wing elements 230 are attached to the carrier element 250 , with the bearing sections 234 of the wing elements 230 being arranged in the receiving sections 252 of the carrier element 250 . The auxiliary actuator 2392 is attached to the housing 270 by its attachment portions and fixed to one of the vane members 230 by its fixing portions. In this case, a plane of extension of the auxiliary actuator 2392 is inclined relative to a plane of extension of the housing 270 .

31 12 shows an oblique top view of the button module 120. FIG 24 , 29 or. 30 in an assembled and actuated condition. It can be seen that the spring element 240 is immersed in the groove 272 of the housing 270 . A portion of an actuating force exerted on the wing members 230 is transmitted via the auxiliary actuator 2392 to the contact means of the switching unit. In this case, the plane of extension of the auxiliary actuator 2392 is aligned along the plane of extension of the housing 270 in the actuated state of the key module 120 .

32 12 shows a side view of button module 120. FIG 30 . The representation is similar to that in 32 the representation 12 . In the side view of 32 the wing elements 230 with two of the bearing sections 234, the spring element 240, the carrier element 250 with two of the receiving sections 252, a section of the housing 270 and a section of the manual actuator 2392 are shown of the button module 120. A section line AA for a sectional view or partial sectional view through the key module 120 is also drawn in. The cutting line AA runs transversely to a longitudinal axis of the spring element 240.

Figure 33 12 shows a partial sectional view of the key module 120. FIG 32 along section line AA. Here are in the partial sectional view of Figure 33 of key module 120, sections of one of the wing elements 230 with two of the fastening sections 232, sections of the spring element 240, sections of the carrier element 250, sections of the housing 270 with a deflection section 3373, sections of the auxiliary actuator 2392 with the two lugs 2796 and sections of the contact device with the first spring tab 1486, the second spring tab 2387, the first contact 1583 and the second contact 1585 shown.

It can be seen here that a first of the lugs 2796 of the auxiliary actuator 2392 is formed and arranged to actuate or deflect the first spring clip 1486 and thus to close the contacts 1583 and 1585 . Furthermore, it can be seen that a second of the lugs 2796 of the auxiliary actuator 2392 is shaped and arranged to actuate or deflect the second spring shackle 2387 in order to generate an actuation noise. Here, the deflecting portion 3373 of the housing 270 is shaped to deflect the second spring tab 2387 of the contactor 280 when the key module 120 is operated. The deflection portion 3373 is formed obliquely inclined with respect to a movement or movement axis of the key module 120 when the same is operated. Here, a bending angle of the actuation section of the second spring tab 2387 is larger than an inclination angle of the deflection section 3373 relative to the axis of movement. Thus is a final edge of second spring tab 2387 spaced from deflection portion 3373 . In this way, friction, scratching and the like between the deflection section 3373 and the operating section of the second spring tab 2387 can be minimized or prevented.

When the button module 120 is actuated, the wing elements 230 move, which is transmitted to the first spring shackle 1486 and the second spring shackle 2387 via the auxiliary actuator 2392 . With such a deflection movement of the first spring clip 1486, the first contact 1583 and the second contact 1585 come into contact with one another. Furthermore, with such a deflection movement of the second spring shackle 2387, the latter is deflected laterally at its actuation section by the deflection section 3373. Due to the slope or inclination of the deflection section 3373 relative to the movement, the lateral deflection of the second spring shackle 2387 increases with increasing deflection, until the actuating section of the second spring shackle 2387 slips from the nose 2796 of the auxiliary actuator 2392 that actuates it and there is a noise that generates the actuation noise Kickback of the second spring clip 2387 against the housing 270 or the manual actuator 2392 comes.

With reference to the figures described above, exemplary embodiments are summarized below and described in other words.

A basis of the button module 120 is formed in particular by a double-leaf mechanism, which, in addition to the task of guiding the button in parallel, also assumes the task of restoring and of the specific force-displacement curve. The wing elements 130 of the double wing mechanism are designed, for example, as stamped parts. This enables the parts to be manufactured from high-strength steel at low cost, resulting in advantages in terms of rigidity and wear. It is also conceivable to mold the parts out of plastic, for example. In addition, the wing elements 230 are designed as identical parts and two wing elements 230 are used for each button module 120 . For example, the double-wing mechanism is designed for an optimal actuation path of around 1.5 millimeters or the like.

In order to reduce disadvantageous play, the wing elements 230 are not designed as a rotary hinge, but rather by means of bearing notches or the receiving sections 252, with a pivoting movement being able to be carried out only in a predefined angular range. Since the two wing elements 230 are clamped together by means of the at least one spring element 240 and pressed into the receiving sections 252, the two wing elements 230 move without play or with little play and with little noise. The wing elements 230 are connected to one another by the coupling sections 731 and 733 or also by means of connecting links, which decouple counter-rotating circular movements of both wing elements 230 that result when the button module 120 is actuated. The receiving sections 252, bearing sections 234, links or first coupling section 731 and fastening sections 232 or spring suspensions are arranged in such a way that the key module 120 has a falling force-displacement curve during actuation after an early maximum.

This means that a restoring force is highest in the rest position. In the end position or in the fully actuated state, the restoring force approaches zero. The force-displacement curve can be set as desired, in particular by means of the spring element 240 and the switching unit 260 and optionally the cam 1928 and/or 1978. The intermediate part 2025 or the key cap 125 is designed as prestressed compensating springs or flat springs by means of two snappers Connecting sections 236 of the wing elements 230 latched and is thus backlash-free floating. During actuation, the upper part 125 or 125 and 2025 moves evenly or parallel to the carrier element 250. Since the rigidity of the metallic wing elements 230 is high and overall play in the guide mechanism is minimized, the upper part 125 or 125 and 2025 or .Key top precise and smooth. Surrounded by the guide mechanism is the mechanical switching mechanism 260, which forms a classic, mechanical switch.

The switching mechanism has the housing 270 and the contact device 280 with two contact parts: the fixed contact piece 1482 and the resilient contactor 1484. Both contact parts are equipped with so-called crosspoint gold contacts, for example, which improves the service life and reliability of the switching unit 260. The housing 270 of the switching mechanism also performs an optical function, with the housing 270 being configured to guide and distribute light from a light source onto an inner surface of the keycap 125 .

At the beginning of the actuation, an actuation force initially increases abruptly because the guide mechanism is pretensioned by the at least one spring element 240 and the restoring force is highest in the rest position. This behavior of the key module 120 allows a very short pre-travel to be implemented, it being possible in particular to prevent a key command from being erroneously triggered by an accidental key touch. With a rubber bell as the switching unit, the increase in force would be considerably flatter and with a longer pre-travel. After a predefined advance path, an actuating element of key cap 125 touches the at least one actuating section 1488 or an actuating tongue of contactor 1484, and after a defined path, contacts 1583 and 1585 or the crosspoint contacts are closed. From this contact, the force-displacement curve of the button module 120 changes, since the force-displacement curve of the switching mechanism or the switching unit 260 is integrated into the force-displacement curve of the guide mechanism. Once the contact is touched, the rigidity of the contactor 1484 changes so that the switching point can be perceived by experienced users, with the force-displacement curve showing a kink. This can be advantageous in computer games, among other things, since it is not absolutely necessary to continue pressing the button and the speed of action and effectiveness in the game can be increased as a result. Upon further actuation or overtravel, the spring body of the at least one spring element 240 strikes a lower cam 1978 or support cam of the rear derailleur housing or housing 270. From this moment on, the spring body begins to bend and produces an increasing force curve that keystroke softens.

The derailleur or the switching unit 260 can be latched into a base or the carrier element 250 . The carrier element 250 of the button module 120 is designed, for example, as a stamped part, so that the button module 120 as a single, SMD-solderable part can be realized. This makes it possible to flexibly equip the switching units 260 simultaneously with other SMD parts such as LEDs, resistors, diodes, etc. on the circuit substrate 110 in an assembly process using a conventional SMD assembly system. This reduces the overall manufacturing costs, makes the design of the key field of a keyboard 100 flexible and saves investments in machines, systems and tools. Flat soldering pads or soldering areas 554 and 582 mean that the circuit substrate 110 is not dependent on the thickness and the key modules 120 can be fitted on switch foils, for example. Alternatively, the button module 120 can be implemented with conventional plug-in connections and soldered as usual with wave soldering machines.

Different variants for the upper part 125 and/or 2025 are briefly presented below. In a simplified embodiment, the upper part can be implemented as a single part in the form of the key cap 125 . In this case, key caps 125 can be painted individually or as an entire key field, for example, and then inscribed with any country variants using a laser process. Optionally, the upper part can be provided as an intermediate piece 2025, which is designed as a standard part. The key cap 125 can then be implemented as a simple shell and snapped onto the intermediate piece 2025. In this case, an inscription can take place as previously described. Alternatively, button symbols can be produced using two-component technology, for example. Country variants are switched over by exchanging key caps 125. The key cap 125 and/or the intermediate piece 2025 can be provided by the customer.

The stabilizer bracket 2190 or key stabilizer can be implemented inexpensively. A round wire bent into a U-shape can be used as the stabilizer bracket 2190 . The central part of the stabilizer bracket 2190 is snapped into the key cap 125 or into the intermediate piece 2025 and is thereby supported in a rotatable manner by means of rotary hinges. The carrier element 250 is formed with two additional straps in the form of the anchoring sections 2156 . Each anchoring portion 2156 includes, among other things, an angled portion one bore each for one leg of the stabilizer bar 2190. During assembly, the legs of the stabilizer bracket 2190 are inserted into the holes in the. The anchoring portions 2156 can additionally be soldered to other soldering pads of the circuit substrate 110 . This increases the mechanical strength of the key module 120. The stabilizer bracket 2190 can be used to provide multiple mechanics for elongated keys and protection against torque and bending as well as lateral stability. The anchoring sections 2156 can, for example, be stamped together with the carrier element 250 .

The button module 120 can be constructed according to the modular principle. The at least one spring element 240 has a function of decoupling the upper part 125 and/or 2020 and a function of enabling a play-free, uniform movement of the upper part 125 and/or 2020. An embodiment of the wing elements 230 and the carrier element 250 as metal parts offers the advantage that a metal construction is stiff and inexpensive. The force-displacement curve during an actuation has a maximum after a minimum actuation travel and then an almost linearly decreasing curve up to a peak point up to contact between the at least one spring element 240 and the cams 1928 and/or 1978.

If 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.

Reference sign

100

keyboard

110

circuit substrate

120

button module

125

keycap

230

wing element

232

attachment section

234

storage section

236

connection section

238

end section

240

spring element

250

carrier element

252

recording section

260

switching unit

270

housing

272

groove

280

contact facility

554

pad

574

intake bay

582

pad

731

first coupling section

733

second coupling section

1335

web

1337

first arm

1339

second arm

1376

section

1482

fixed contact piece

1484

contactor

1486

first spring tab

1488

operating section

1583

first contact

1585

second contact

1928

upper cam

1978

lower cam

2025

spacer

2156

anchor section

2190

stabilizer bar

2371

actuation opening

2375

bracket section

2387

second spring tab

2392

auxiliary actuator

2794

attachment section

2796

nose

2798

fixation section

3373

deflection section

Claims (15)

1. Key module (120) for a keyboard (100), wherein the key module (120) comprises:

   a first wing element (230) and a second wing element (230) for guiding a movement of the key module (120) upon actuation, wherein each wing element (230) comprises a bar (1335), a first arm (1337) and a second arm (1339), wherein the arms (1337, 1339) extend away from the bar (1335), wherein a mounting portion (232) is formed on the bar (1335), wherein a first bearing portion (234) for bearing the wing element (230) is formed on the first arm (1337), wherein a second bearing portion (234) for bearing the wing element (230) is formed on the second arm (1339), wherein the first wing element (230) and the second wing element (230) are mechanically coupleable to each other;

   at least one spring element (240) for providing a reset force upon actuation of the key module (120), wherein the at least one spring element (240) is mountable to the mounting portion (232) of the first wing element (230) and the mounting portion (232) of the second wing element (230), wherein the at least one spring element (240) is formed as a tension spring;

   a support element (250) for supporting the wing elements (230), wherein a plurality of accommodating portions (252) for accommodating the bearing portions (234) of the wing elements (230) are formed in the support element (250);

   characterised in that the key module (120) comprises:
   at least one cam (1928, 1978) for deforming the at least one spring element (240) in an actuated estate of the key module (120).
2. Key module (120) according to claim 1, wherein each wing element (230) comprises coupling portions (731, 733) for mechanically coupling the wing elements (230) to each other, wherein a first coupling portion (731) is formed at an end of the first arm (1337) of each wing element (230), wherein a second coupling portion (733) is formed at an end of the second arm (1339) of each wing element (230).
3. Key module (120) according to claim 2, wherein the first coupling portion (731) and the second coupling portion (733) are formed differently, wherein the first coupling portion (731) of the first wing element (230) is coupleable to the second coupling portion (733) of the second wing element (230), and wherein the second coupling portion (733) of the first wing element (230) is coupleable to the first coupling portion (731) of the second wing element (230).
4. Key module (120) according to one of claims 2 to 3, wherein the first coupling portion (731) is formed as a link and the second coupling portion (733) is formed as a protruding portion, or wherein the first coupling portion (731) and the second coupling portion (733) are formed as teeth.
5. Key module (120) according to one of the preceding claims, wherein the first wing element (230) and the second wing element (230) are formed to be identical to each other, and/or wherein each wing element (230) is integrally formed, and/or wherein each wing element (230) is formed of a metal material.
6. Key module (120) according to one of the preceding claims, wherein each wing element (230) comprises at least one connecting portion (236, 238) for connecting the wing element (230) to a top part (125; 2025) for the key module (120), wherein the top part (125; 2025) comprises a keycap (125) or is coupleable to a keycap (125), wherein the at least one connecting portion (236, 238) is formed as an elastically deformable beam (236) or as an elastically deformable beam (236) with an end portion (238) bent into a base area region of the bar (1335).
7. Key module (120) according to one of the preceding claims, wherein the support element (250) comprises soldering surfaces (554) or connector pins for attaching the support element (250) to a circuit substrate (110) of the keyboard (100), and/or wherein the support element (250) is formed of a metal material.
8. Key module (120) according to one of the preceding claims, wherein the support element (250) comprises at least one anchoring portion (2156) for anchoring a stabilizing bracket (2190) for stabilizing a top part (125; 2025) for the key module (120), provided that this claim does not refer to a feature combination including the features of claim 6, or for stabilizing the top part (125; 2025), provided that this claim refers to a feature combination including the features of claim 6, with respect to torsional moments and bending moments.
9. Key module (120) according to one of the preceding claims, wherein the at least one cam (1928, 1978) is formed on the support element (250), on a switch unit (260) and/or on a top part (125; 2025) for the key module (120), provided that this claim does not refer to a feature combination including the features of claim 8, or on the top part (125; 2025), provided that this claim refers to a feature combination including the features of claim 8, wherein the top part (125; 2025) comprises a keycap (125) or is coupleable two a keycap (125).
10. Key module (120) according to one of the preceding claims, with a switch unit (260), provided that this claim does not refer to claim 9, wherein the switch unit (260) comprises a housing (270) and a contact device (280) at least partially arranged in the housing (270) for establishing electric contact upon actuation of the key module (120), wherein the contact device (280) comprises a fixed contact piece (1482) with a first contact (1583) and a contactor (1484) with a first spring clip (1486) carrying a second contact (1585) and/or a second spring clip (2387) for producing an actuation sound and/or at least one actuation portion (1488), wherein the contactor (1484) is integrally formed.
11. Key module (120) according to claim 10, wherein the housing (270) is formed of a transparent or opaque material at least in a subsection (1376) and/or as at least one lens at least in a subsection (1376), and/or wherein the housing (270) comprises a receiving bay (574) for a light source, and/or wherein at least one groove (272) is formed in the housing (270) for receiving at least one subsection of the at least one spring element (240) in an actuated state of the key module (120).
12. Key module (120) according to one of claims 10 to 11, wherein the contact device (280) comprises soldering surfaces (582) or connector pins for attaching the switch unit (260) to a circuit substrate (110) of the keyboard (100), and/or wherein the contact device (280) is formed to establish the electric contact while producing friction between the first contact (1583) and the second contact (1585).
13. Key module (120) according to one of claims 10 to 12, wherein the housing (270) comprises an actuation opening (2371) for exposing the at least one actuation portion (1488) of the contact device (280) and/or a deflecting portion (3373) for deflecting the second spring clip (2387) of the contact device (280) upon the actuation of the key module (120), wherein the deflecting portion (3373) is formed to be inclined obliquely relative to the movement of the key module (120) upon the actuation.
14. Key module (120) according to one of claims 10 to 13, with an auxiliary actuator (2392) for actuating the contact device (280), wherein the housing (270) comprises at least one holding portion (2375) for holding the auxiliary actuator (2392), wherein the auxiliary actuator (2392) comprises at least one attaching portion (2794) from movably attaching the auxiliary actuator (2392) to the at least one holding portion (2375) of the housing (270) and/or at least one nose (2796) for deflecting the first spring clip (1486) and/or the second spring clip (2387) of the contact device (280) upon the actuation of the key module (120), and/or wherein the auxiliary actuator (2392) comprises at least one fixing portion (2798) for fixing the auxiliary actuator (2392) to the first wing element (230) or the second wing element (230).
15. Keyboard (100), wherein the keyboard (100) comprises:

    at least one key module (120) according to one of the preceding claims; and

    a circuit substrate (110), wherein the at least one key module (120) is arranged on the circuit substrate (110).

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