DE102018102604A1 - Key module for a keyboard and keyboard - Google Patents

Abstract

A key module (120) for a keyboard is presented. The key module (120) includes a first wing member (230) and a second wing member (230) for guiding movement of the key module (120) upon actuation. Each wing element (230) has a web, a first arm and a second arm. The arms extend away from the bridge. At the web, a fastening portion (232) is formed. On the first arm, a first bearing portion (234) for supporting the wing member (230) is formed. On the second arm, a second bearing portion (234) for supporting the wing member (230) is formed. The first wing element (230) and the second wing element (230) can be mechanically coupled to one another. The key module (120) also includes at least one spring member (240) for providing a restoring force upon actuation of the key module (120). The at least one spring element (240) can be fastened to the fastening section (232) of the first wing element (230) and to the fastening section (232) of the second wing element (230). Furthermore, the key module (120) has a carrier element (250) for supporting the wing elements (230). In the support member (250), a plurality of receiving portions (252) for receiving the bearing portions (234) of the wing members (230) are formed.

Description

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

Keyboards, such as those used in conjunction with computers, may use different key systems.

The EP 1 612 821 A2 discloses a push-button switch, a keyboard and a mounting gauge for push-buttons.

Against this background, the present invention provides an improved key module for a keyboard and an improved keyboard according to the main claims. Advantageous embodiments will become apparent from the dependent claims and the description below.

According to embodiments of the approach described herein, a key system may be provided with a mechanical system having a dual blade unit and an elastic means coupled to the dual blade unit. The guide mechanism can be shaped to effect, for example, a side-synchronous, synchronous and backlash-free or low-play guidance or parallel guidance of an upper part of the key module. In particular, the double unit and the elastic means in connection with a switching unit are also designed to provide a restoring force with respect to an actuation of the key module and to effect a specific force-path curve and to make it adjustable.

Advantageously, a very flat mechanical switch module can be provided, for example for gaming applications, high-end office applications or upmarket office applications and the like. The switch module can be used for example in notebooks and flat keyboards. The force-displacement curve of the key module with regard to an actuation can be set by the manufacturer, by the customer and additionally or alternatively by the user. The key module can, for example, allow a customer-specific further processing by the user. Also, a life of the key module can be achieved, which may be, for example, in the field of classical mechanical key modules. In addition, the key module can support a uniform and economical illumination of a key cap or a top by a light source or integratable light source. By means of such a key module, for example, even very shallow structural dimension requirements can be met, such as, for example, 1 to 4 millimeter block size, in particular approximately up to 2 millimeter block size.

• 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; und
• ein Trägerelement zum Tragen der Flügelelemente, wobei in dem Trägerelement eine Mehrzahl von Aufnahmeabschnitten zur Aufnahme der Lagerabschnitte der Flügelelemente ausgeformt sind.

A key module for a keyboard is presented, wherein the key module has 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 web, a first arm and a second arm, the arms extending away from the web, wherein a mounting portion is formed on the web wherein a first bearing portion for supporting the wing member is formed on the first arm, wherein on the second arm, a second bearing portion for supporting the wing member is formed, 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 during the actuation of the key module, wherein the at least one spring element is attachable to the attachment portion of the first wing member and the attachment portion of the second wing member; and
• a support member for supporting the wing members, wherein in the support member, a plurality of receiving portions for receiving the bearing portions of the wing members are formed.

The keyboard may be provided, for example, for a computer or the like. The keyboard may have at least one key module. The key module may be part of a key or represent a key. Thus, one key module per key can be provided. The key module may also be referred to as a mechanical button. The at least one spring element may also be referred to as an elastic means. The receiving portions of the support member may be formed as a bearing notches, cuts or the like. In other words, the receiving portions of the support member may be notched, v-shaped and additionally or alternatively dovetail-shaped. The carrier element may be integrally formed.

According to one embodiment, each wing member may have coupling portions for mechanically coupling the wing members together. In this case, a first coupling section may be formed at one end of the first arm of each wing element. At one end of the second arm of each wing member, a second coupling portion may be formed. Such an embodiment offers the advantage that the wing elements are coupled together in a simple manner can also be a quick and easy installation can be made possible.

In this case, the first coupling portion and the second coupling portion may be formed differently. The first coupling portion of the first wing member may be coupled to the second coupling portion of the second wing member. The second coupling portion of the first wing member may be coupled to the first coupling portion of the second wing member. Thus, the first coupling portions may be formed complementary to the second coupling portions. Such an embodiment has the advantage that the wing elements can be securely and reliably coupled together. In addition, the wing elements may be formed as equal parts.

In particular, in this case, the first coupling portion may be formed as a backdrop and the second coupling portion may be formed as a projection portion. Alternatively, the first coupling portion and the second coupling portion may be formed as teeth. Such an embodiment offers the advantage that a mechanical decoupling can be achieved.

Also, the first wing member and the second wing member may be formed identical to each other. Additionally or alternatively, each wing element may be integrally formed. Additionally or alternatively, each wing element may 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 a production of the wing elements can be simplified and reduced. In addition, a 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 a top part for the key module. Here, the upper part may have a key cap or be coupled with a key cap. The keycap may represent a visible to the operator and depressible part of the button. 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.

In this case, the at least one connecting portion may be formed as an elastically deformable beam portion or as an elastically deformable beam portion with an end portion that is bent into a base area of the web, formed. Here, the bent end portion may be arranged in an assembled state of the key module between the web of the wing member and the support member. Thus, in a mounting of the upper part of a support of the beam portion against the support member and a disassembly of the upper part, a support of the beam portion against the web can be achieved. Such an embodiment has the advantage that a simple and safe assembly and disassembly of the upper part to or from the wing elements can be made possible.

According to one embodiment, the carrier element can have soldering surfaces or connection pins for attaching the carrier element to a circuit substrate of the keyboard. Additionally or alternatively, the carrier element may be formed from a metal material. Such an embodiment offers the advantage that a direct attachment of the key module to a circuit board or the like can be made possible. Furthermore, the carrier element can be made robust.

Also, the support member may have at least one anchoring portion for anchoring a stabilizer bar for stabilizing a top part for the key module in terms of torques and bending moments. The at least one anchoring portion may be formed as an ear, an eyelet or the like. Such an embodiment offers the advantage that the stabilizer bar can be attached directly to the key module. Thus, an integrated solution for additional stabilization can be realized, in particular for elongated keys.

Furthermore, the at least one spring element can be formed as a tension spring or as a compression spring. Such an embodiment has the advantage that a structurally simple, reliable and adjustable by replacing the at least one spring element providing a restoring force can be made possible. In addition, optionally a compression spring can also serve as a bending backdrop.

In addition, at least one cam may be provided for deforming the at least one spring element in an actuated state of the key module. Here, the at least one cam may be formed on the carrier element, on a switching unit and additionally or alternatively on an upper part for the key module. In this case, the upper part may have a key cap or be coupled with a key cap. The at least one cam may also be referred to as a protrusion 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 can lead to a higher resistance to an operating force. Thus, a force-displacement curve with respect to an actuation of the key module can be advantageously influenced, among other things, by a geometry of the at least one cam.

Furthermore, the key module may have a switching unit. The switching unit may comprise a housing and a contact device arranged at least partially in the housing for establishing an electrical contact upon actuation of the key module. In this case, the contact device may have a fixed contact piece with a first contact and a contactor with a second contact bearing first spring tab and additionally or alternatively a second spring tab for generating an operating noise and additionally or alternatively at least one operating portion. In this case, the contactor can be integrally formed. The contactor may comprise either the first spring tab and at least one actuating portion or the first spring tab, the second spring tab and at least two actuating portions. The at least one operating section can be pressed by the upper part or a Hilfsbetätiger. Between the first contact and the second contact, the electrical contact can be produced in a contact point. Each contact may be elongated and additionally or alternatively have a linear contact area. A contact area of the first contact and a contact area of the second contact may intersect. In this case, each contact region may extend obliquely to a longitudinal axis of the spring tab. The second spring tab may have an actuating portion which is angled, kinked or bent formed. The second spring tab may be formed to generate the operating noise upon a backlash against the housing. Such an embodiment offers the advantage that the electrical contact can be made reliably, wherein the force-displacement curve of an actuation can be influenced by suitable design of the contact device. In addition, optionally an operating noise can be realized in a simple manner. In this case, the switching unit can enable both the function of electrical contact making and the acoustic feedback. This can be realized by the integrally molded contactor with the at least one spring tab.

In this case, the housing may be formed at least in one section of a transparent or opaque material and additionally or alternatively at least in a section as at least one lens. Additionally or alternatively, the housing may have a receiving bay for a light source. Additionally or alternatively, at least one groove for receiving at least a portion of the at least one spring element in an actuated state of the key module may be formed in the housing. The at least one groove may also be referred to as a recess portion, an elongated recess or a groove. The at least one lens may be configured to distribute light from a light source via the top of the key module and additionally or alternatively via the keycap. The at least one lens may be configured to focus or scatter light. For example, the at least one lens may be embodied as an optical diffuser. Such an embodiment has the advantage that a lighting of the button can be achieved to save space and additionally or alternatively a saving of space for the key module can be realized by at least partial immersion of the at least one spring element in the groove.

In this case too, the contact device may have soldering surfaces or connection pins for attaching the switching unit to a circuit substrate of the keyboard. Additionally or alternatively, the contact device may be formed to establish the electrical contact to create friction between the first contact and the second contact. Such an embodiment offers the advantage that contact deterioration due to particle contamination can be avoided.

In addition, the key module may have an upper part. Here, the upper part may have a key cap or be coupled with a key cap. Additionally or alternatively, at least one groove for receiving at least one partial section of the at least one spring element in an actuated state of the button module may be formed in the upper part.

Further, the key module may include a stabilizer bar for stabilizing a key module upper with respect to torques and bending moments. In this case, the stabilizer bar can be anchored to the support element of the key module.

According to one embodiment, the housing may have an actuation opening for exposing the at least one actuation section of the contact device. Additionally or alternatively, the housing may have a deflection section for deflecting the second spring tab of the contact device upon actuation of the key module. In this case, the deflecting portion may be obliquely inclined relative to the movement of the key module in the operation. In this case, the deflection can be bent, slightly stepped, than a nub or a cam may be formed or the like. The deflecting portion may be configured to cause deflection or deflection of the second spring tab transversely or obliquely with respect to movement of the key module upon actuation of the key module. An angle of inclination of the deflecting portion relative to the movement of the key module in the operation may be less than an inclination angle of an angled or bent operating portion of the second spring tab. Such an embodiment offers the advantage that a simple and reliable actuation of the contact device can be made possible through the actuating opening. Additionally or alternatively, a defined and low-friction deflection or deflection of the second spring tab can be achieved in order to effect a repelling of the second spring tab for the purpose of generating noise.

Also, the key module may have a Hilfsbetätiger for actuating the contact device. Here, the housing may have at least one support portion for holding the Hilfsbetätigers. The auxiliary operator may comprise at least one attachment portion for movably attaching the auxiliary actuator to the at least one support portion of the housing. Additionally or alternatively, the Hilfsbetätiger may have at least one nose for deflecting the first spring tab and additionally or alternatively the second spring tab of the contact device in the operation of the key module.

By using the support portion and the attachment portion, a movable attachment of the auxiliary actuator to the housing can be effected, wherein the movable attachment can be articulated or translatory, for example. The second spring tab may be formed to generate the operating noise in a backlash against the auxiliary actuator. The Hilfsbetätiger may have a nose for deflecting the first spring tab and additionally or alternatively the second spring tab or at least a first nose for deflecting the first spring tab and a second tab for deflecting the second spring tab. Such an embodiment has the advantage that the contact device can be operated in a robust and simple manner, wherein a variant of the contactor with a spring tab or two spring tabs can be considered flexibly constructive.

Furthermore, the auxiliary actuator may have at least one fixing section for fixing the auxiliary actuator to the first wing element or the second wing element. The Hilfsbetätiger can be mitnehmbar or mitbewegbar via the at least one fixing portion in the actuation of the key module by at least one of the wing elements in at least one direction of movement. In this case, the at least one fixing section may be formed as a projection. Such an embodiment offers the advantage that upon actuation of the key module, production of an electrical contact and, additionally or alternatively, integrated generation of the operating noise can be achieved in a reliable and robust manner. This can also be achieved with the participation of 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 key module; and
• a circuit substrate, wherein the at least one key module is disposed on the circuit substrate.

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

The key module described can be used as a replacement for existing key modules, such as key modules with linear guide. Such modules are robust, reliable, durable and have a classic rear derailleur with precious metal contacts and metallic return springs. The mechanics concept allows a realization of precise, tilting linear movements with large actuation paths, z. B. 3 to 4 millimeters, and is one of the classic mechanical switches. There are switches with different force-displacement curves and with linear force-displacement curves, with tactile gradients or with a noticeable pressure point and with clicking gradients or noticeable and audible progressions. Embodiments of the key module described herein avoid disadvantages of such existing key modules and yet have the advantages mentioned above and also a lower overall height than the aforementioned modules. Therefore, embodiments of the key module described can be used not only for flat keyboards but also for notebooks or the like.

The described key module can also be used as a replacement for key modules with scissors mechanism as a parallel guide and rubber bell as a rear derailleur. Button modules with scissors mechanism have a flat design in connection with relatively large operating distances. The functionalities leadership and force-distance course are usually separated, so that the scissors mechanism assumes the function of leadership or parallel leadership and a rubber bell or snap disc forms a rear derailleur and is responsible for the specific force-displacement curve. Unlike the scissors mechanism with numerous, sometimes unstable levers with many hinges, z. B. six hinges and four scenes, can be made stable and precise, provided a rigidity against tilting and a lifetime extended according to embodiments of the approach described here, for example, the parallel guide. In addition, noises can be minimized during operation. It can also be achieved over the life of the module stable force-displacement characteristics and reliability according to embodiments, unlike some rubber bells made of silicone due to the setting behavior.

A double-wing mechanism or butterfly mechanism is not widely used. As a rear derailleur are either classic rubber bells with and without switching foils or the metallic snap discs. As is known from the mechanics basics, the wings of the double wing mechanism are half as long as the levers of the scissors mechanism. Because of this, such mechanisms are stiffer against tilting compared to scissor mechanics. An actuation is half the size of scissors mechanisms at the same angular position of the lever. The wings of the mechanism are often realized by means of a film hinge as a connection. However, there may be a pseudo-parallel movement, if only one wing is rotatably mounted and the second wing is realized as a backdrop. This leads to a displacement of the keycap transverse to an actuating direction during actuation. As a switching mechanism and a snap disk can be selected. Here, too, the double-wing mechanism takes over the role of parallel guidance, while the snap-action disc forms a rear derailleur and ensures a specific force-displacement curve and for the provision. Hinges can cause play and affect tilting stiffness. Key modules with the double-wing mechanism have advantages in terms of rigidity against tilting and on a parallelism. Embodiments of the key module described herein can avoid disadvantages as well as achieve the advantages mentioned above and also advantages with respect to the overall operation path.

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

The invention will be described by way of example with reference to the accompanying 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 key module 2 or. 3 in an assembled state;
• 5 an oblique bottom view of the key module 4 ;
• 6 an oblique top view of the button module from the 2 to 5 in an assembled state and without a button cap;
• 7 an oblique view of a subsection of the key module from the 2 to 6 ;
• 8th a side view of the button module 4 or. 5 ;
• 9 a side view of the button module 4 or. 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. 5 ;
• 13 a plan view of the key module 120 out 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 subsection of a key module according to an embodiment of 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 support element 23 or. 24 in a partially assembled state;
• 26 the contact device 23 . 24 or. 25 ;
• 27 the auxiliary operator 23 or. 24 in an oblique bottom view;
• 28 the auxiliary operator 23 . 24 or. 27 in an oblique top view;
• 29 a partial exploded view of parts of the key module 24 in a partially assembled state;
• 30 an oblique top view of the key module 24 or. 29 in a mounted and unactuated condition;
• 31 an oblique top view of the key module 24 . 29 or. 30 in a mounted and operated state;
• 32 a side view of the button module 30 ; and
• 33 a partial sectional view of the key module 32 ,

In the following description of preferred embodiments of the present invention, the same or similar reference numerals are used for the elements shown in the various figures and similarly acting, wherein a repeated description of these elements is omitted.

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 especially as a peripheral device for a computer.

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

Furthermore, according to the in 1 shown and described embodiment of each key module 120 a keycap 125 appropriate. There is every keycap 125 with its own key module 120 coupled. Each unit of button module 120 and keycap 125 represents a key on the keyboard 100 , Alternatively, each key module represents 120 a key on the keyboard 100 , Especially on the key modules 120 will be discussed in more detail with reference to the following figures.

The keycap 125 represents one for a user of the keyboard 100 visible and touchable part of a button. An actuation of a button module 120 is done by pressing the button cap 125 , Each button module 120 is configured to respond to an actuating force with a force-displacement characteristic of a resistance or a restoring force. Furthermore, each key module is 120 adapted to make an electrical connection in response to an operation with a predefinable actuating travel, wherein a switching operation is carried out.

2 shows a partial exploded view of a button module 120 according to an embodiment. The key module 120 corresponds or resembles the key module 1 , According to the in 2 illustrated embodiment, the key module 120 also the keycap 125 on. Alternatively, the keycap 125 separately from the key module 120 provided and coupled with the same. In one on the key module 120 assembled state of the keycap 125 represent the key module 120 and the keycap 125 a button. The keycap 125 represents an upper part of the key module 120 or for the key module 120 , At the keycap 125 At least one alphanumeric character or a special character is printed.

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 upon actuation by a user. The two wing elements 230 are mechanically coupled with each other. In the presentation of 2 are the wing elements 230 in an unactivated state of the button module 120 shown. In the unactuated state, the mechanically coupled wing elements tension 230 a dull one Rest angle between them on. In an actuated state of the key module 120 tension the coupled wing elements 230 between them an opening angle which is greater than the angle of repose. The opening angle can also be 180 degrees. For example, a difference between the angle of repose and the opening angle may be in a range of about 12 degrees to 18 degrees.

Each wing element 230 has a bridge, a first arm and a second arm. The arms extend away from the bridge. In particular, the arms extend at right angles away from the web. The arms also extend, for example, within a tolerance range parallel to one another. Alternatively, the arms may also extend obliquely with respect to each other. According to the in 2 illustrated embodiment, the first wing element 230 and the second wing element 230 formed identically to each other. In addition, every wing element is here 230 integrally formed. For example, it is also each wing element 230 formed from a metal material. On it, like the wing elements 230 are formed and coupled together, will be discussed in more detail with reference to subsequent figures.

Each of the wing elements 230 according to the in 2 shown and described exemplary embodiment two attachment sections 232 for securing a spring element and two bearing sections 234 for storing the wing element 230 on. Here are the attachment sections 232 at the web of the wing element 230 formed. The attachment sections 232 are as passage openings, in particular as rounded triangular passage openings, in the wing element 230 formed. The storage sections 234 are on the arms of the wing element 230 formed. Here, on the first arm, a first bearing section 234 formed and is on the second arm, a second bearing portion 234 formed. The storage sections 234 are as heels, steps or lugs in outside edges of the arms of the wing element 230 formed.

Each wing element 230 also has at least one connecting section 236 for connecting the wing element 230 with a top for the key module 120 on. Here, the upper part has the key cap 125 on. According to the in 2 illustrated embodiment, each wing element 230 by way of example a connecting section 236 on. The connecting section 236 is at the web of the wing element 230 formed. Here is the connection section 236 formed as an elastically deformable beam portion. According to the in 2 shown and described embodiment, the formed as an elastically deformable beam portion connecting portion 236 an end section 238 on, which is bent into a base area of the web. The keycap 125 is via a snap connection by means of the connecting section 236 with the wing elements 230 and thus with the key module 120 connectable.

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

The key module 120 also has a support element 250 for carrying the wing elements 230 on. The carrier element 250 is also designed to be the spring element 240 and optionally the keycap 125 to wear when the same on the wing elements 230 are attached. For example, the carrier element 250 formed from a metal material. The carrier element 250 has a plurality of receiving sections 252 for receiving the bearing sections 234 the wing elements 230 on. According to the in 2 shown and described embodiment, the support member 250 here four recording sections 252 on. The recording sections 252 are as bearing notches in the support element 250 formed. In other words, the receiving sections 252 notched, v-shaped or swallowtail-shaped. The storage sections 234 the wing elements 230 are in an assembled state of the button module 120 in the recording sections 252 stored. Thus, the wing elements 230 on the carrier element 250 in a predefinable angular range pivotally mounted or tiltable. The angle range is also by a shape of the receiving portions 252 definable.

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

The key module 120 also has a switching unit 260 on. The switching unit 260 has a housing 270 and a contact device 280 on. The contact device 280 is at least partially in the housing 270 arranged. In other words, the housing 270 shaped to at least a portion of the contact device 280 take. In the case 270 is according to the in 2 shown embodiment, for example, only one 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 be on actuation of the key module 120 to make an electrical contact. In this case, the contact device 280 for example, by the key cap 125 be pressed or deformed to effect the making of the electrical contact. On the switching unit 260 will be discussed in more detail with reference to the following figures.

3 shows a partial exploded view of the key module 120 out 2 in a partially assembled state. It shows 3 the key module 120 in a compared with 2 further joined state. Here is the switching unit 260 shown in an assembled state, wherein the contact device 280 partially in the housing 270 is included. Furthermore, the wing elements 230 on the carrier element 250 stored. Here are the bearing sections 234 the wing elements 230 in the recording sections 252 the carrier element 250 arranged.

4 shows an oblique top view of the key module 120 out 2 or. 3 in a joined state. Here are the key module 120 because of the perspective in the representation of 4 the keycap 125 and the carrier element 250 visible. In the assembled state of the button module 120 is the keycap 125 connected to the wing elements and the switching unit is arranged surrounded by the webs and arms of the wing elements.

5 shows an oblique bottom view of the key module 120 out 4 , Here are the key module 120 the keycap 125 , the wing elements 230 with two of the four attachment sections 232 , two of the four bearing sections 234 and one of the two connection sections 236 with the bent end section 238 shown. Furthermore, the carrier element 250 with two of the receiving sections 252 as well as soldering surfaces 554 , the case 270 with a recording bay 574 and the contact device 280 with solder surfaces 582 shown.

The soldering surfaces 554 the carrier element 250 serve for attaching the carrier element 250 on a circuit substrate of a keyboard. The soldering surfaces 582 the contact device 280 the switching unit serve to attach the switching unit to the circuit substrate of the keyboard. Thus, the key module 120 by soldering the solder pads 554 and 582 can be mounted on the circuit substrate directly on the circuit substrate.

In the case 270 the switching unit is the receiving bay 574 formed to receive a light source. The light source may, for example, be a surface mount LED or an SMD LED (SMD = surface-mounted device). Furthermore, the housing 270 according to one embodiment, at least in a section of a transparent or opaque material, in particular a plastic material molded.

In the presentation of 5 it can be seen that the switching unit with the housing 270 and the contact device 280 is arranged in a space which, through the webs and arms of the wing elements 230 is surrounded.

According to another embodiment, in particular as an alternative to the soldering surfaces 554 and 582 , the support member and the switching unit may be attachable to the circuit substrate of the keyboard by means of pins.

6 shows an oblique top view of the key module 120 out 2 to 5 in a assembled state and without a button cap. Thus, the illustration in FIG 6 the presentation 2 or. 3 except that the keycap is omitted and the key module 120 is shown in the assembled state.

7 shows an oblique view of a subsection of the key module 2 to 6 , The in 7 Part of the button module shown comprises the guide mechanism or the wing elements 230 and the spring element 240 , In the presentation of 7 are here of the wing elements 230 the attachment sections 232 , the bearing sections 234 , the connecting sections 236 and first coupling sections 731 and second coupling sections 733 shown.

The coupling sections 731 . 733 are shaped to the wing elements 230 mechanically couple with each other. Each wing element 230 has a first coupling section 731 and a second coupling section 733 on. It is at one end of the first arm of each wing element 230 the first coupling section 731 formed and is at one end of the second arm of each wing element 230 the second coupling section 733 formed. The first coupling section 731 and the second coupling section 733 each wing element 230 are shaped differently. Here are all the first coupling sections 731 have the same shape and are all second coupling sections 733 the same shape. Thus, the first coupling section 731 of the first wing element 230 with the second coupling section 733 of the second wing element 230 can be coupled and is the second coupling section 733 of the first wing element 230 with the first coupling section 731 of the second wing element 230 coupled. According to the embodiment illustrated here, the first coupling section 731 formed as a backdrop and is the second coupling section 733 formed as a projection portion or a plate. According to another embodiment, the first coupling portion and the second coupling portion may be formed as teeth.

8th shows a side view of the button module 120 out 4 or. 5 , Here are in the side view of 8th from the key module 120 the keycap 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 case 270 the switching unit shown.

9 shows a side view of the button module 120 out 4 or. 5 , The corresponding in 9 shown side view of the side view 8th except that the key module 120 in 9 compared with the presentation 8th a quarter turn about an orthogonal to a printed surface of the key cap 125 is turned. In the side view of 9 are from the button module 120 the keycap 125 , the spring element 240 , the carrier element 250 and the case 270 the switching unit with the groove 272 shown.

10 shows a plan view of a key cap 125 , At the keycap 125 it is the key cap of one of the figures described above or a similar key cap.

11 shows a side view of the button module 120 out 6 , Here corresponds to the in 11 shown side view of in 9 shown side view with the exception that the key cap is omitted. Thus, from the key module 120 in the presentation of 11 one of the wing elements 230 with the connecting section 236 , the spring element 240 , the carrier element 250 and the case 270 the switching unit with the groove 272 shown.

12 shows a side view of the button module 120 out 4 or. 5 , The corresponding in 12 shown side view of in 8th shown side view with the exception that the key cap is omitted. Thus, from the key module 120 in the presentation of 12 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 255 and the case 270 the switching unit shown.

13 shows a plan view of the key module 120 out 6 . 11 or. 12 , Here are in the representation of 13 from the key module 120 the wing elements 230 with the attachment sections 232 , the connecting sections 236 and the coupling sections 731 and 733 , the spring element 240 , Subsections of the support element 250 , the case 270 with the groove 272 and sections of the contact device 280 shown. Furthermore, in 13 also webs 1335 , first arms 1337 and second arms 1339 the wing elements 230 explicitly designated. There is also a section 1376 of the housing 270 shown formed as at least one lens. Here is the groove 272 between the section 1376 and another portion of the housing 270 arranged in which the contact device 280 partially recorded. The subsection 1376 of the housing 270 is designed to scatter and / or to focus light from a light source. The light source is according to one embodiment also at least partially in the housing 270 received.

14 shows a contact device 280 for a key module according to an embodiment. The contact device 280 corresponds or similar to the contact device of one of the figures described above. Thus, the contact device 280 as a contactor for a switch unit of a key module of any one of the above-described figures.

The contact device 280 has a fixed contact piece 1482 and a contactor 1484 on. The fixed contact piece 1482 and the contactor 1484 are electrically isolated from each other. On the fixed contact piece 1482 is a first contact of the contact device 280 arranged. At the contactor 1484 is a second contact of the contact device 280 arranged.

The contactor 1484 has a first spring tab carrying the second contact 1486 and only by way of example two operating sections 1488 on. About the operating sections 1488 is the first spring tab 1486 movable until an electrical contact between the first contact and the second contact is made. The operating sections 1488 are actuated upon actuation of the key module, for example by an upper part for the key module or the key module. Here is the contactor 1484 elastically deformable. Thus, the contactor acts 1484 also as an elastic agent.

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

15 shows the contact device 280 out 14 , More specifically shows 15 the contact device 280 out 14 from a different perspective. Here are also the first contact 1583 and the second contact 1585 shown and explicitly designated.

The first contact 1583 has a linear or elongated contact area with a first extension axis and the second contact 1585 has a linear or elongate contact area with a second extension axis. The first extension axis and the second extension axis cross each other with electrical and mechanical contact between the first contact 1583 and the second contact 1585 can be produced in a point-shaped contact section.

Each extension axis extends obliquely according to the embodiment shown here, 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 the contactor 1484 , According to the in 15 illustrated embodiment, the first contact 1583 and the second contact 1585 each a triangular section profile. For example, the contacts 1583 and 1585 cut from a wire and at the contact device 280 welded.

16 shows a contact device 280 for a key module according to an embodiment. In this case, the contact device corresponds 280 in 16 the contact device 14 or. 15 except that the contactor 1484 only one operating section 1488 has and is shaped differently, in particular with regard to the first spring tab 1486 and the operating section 1488 , In other words, the contact device represents 280 in 16 a structural variant of the contact device 14 or. 15 , Thus, the contact device is similar 280 in 16 the contact device 14 or. 15 , From the contacts of the contact device 280 is only the first contact due to a perspective chosen in the presentation 1583 visible.

17 shows a contact device 280 for a key module according to an embodiment. The contact device 280 in 17 corresponds to the contact device 16 except that the contactor 1484 in particular with regard to the first spring tab 1486 and the operating section 1488 is formed differently.

18 shows a contact device 280 for a key module according to an embodiment. In this case, the contact device corresponds 280 in 18 the contact device 14 or. 15 except that the contactor 1484 differently shaped, in particular with regard to the first spring tab 1486 and the operating sections 1488 , From the contacts of the contact device 280 is only the first contact due to a perspective chosen in the presentation 1583 visible.

With reference to the 14 to 18 It should be noted that the contact device 280 , in particular the contactor 1484 with the at least one operating section 1488 and the first spring tab 1486 , is formed to the electrical contact to generate friction between the first contact 1583 and the second contact 1585 manufacture.

19 shows a sectional view of a button module 120 according to an embodiment. The key module 120 in 19 This is similar to the button module 2 . 3 . 4 . 5 . 8th or. 9 , From the button module 120 are in 19 here the keycap 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 shown.

The upper cam 1928 is as a section of the keycap 125 formed. More specifically, the upper cam 1928 as a towards the spring element 240 towards projecting portion of the key cap 125 formed. The lower cams 1978 are formed as sections of the housing of the switching unit. Here are the lower cam 1978 as in the direction of the spring element 240 molded out projecting portions of the housing. The lower cams 1978 are arranged for example in the groove of the housing. Thus, the spring element 240 between the upper cam 1928 and the lower cam 1978 arranged. The cams 1928 and 1978 are shaped to be in an actuated state of the key module 120 the spring element 240 deform, more precisely, elastically deform.

The spring element 240 is with increasing actuation travel upon actuation of the key module 120 through the cams 1928 and 1978 deformable. Here are the cams 1928 and 1978 formed and arranged to the spring element 240 to bend. When deformed by the cams 1928 and 1978 loses a spring force of the spring element 240 a linearity, due to the deformed spring element 240 an actuating force counteracting a restoring force or an actuating force counteracting a resistance increases.

Additionally or alternatively, according to one embodiment, at least one cam on the carrier element 250 be formed.

20 shows a partial exploded view of a button module 120 according to an embodiment. The key module 120 corresponds to the key module of one of the figures described above except that the key module 120 a switching unit with different contact device 280 and adapted housing 270 and in addition an intermediate piece 2025 has that with the keycap 125 can be coupled. Here represent the key cap 125 and the intermediate piece 2025 the top for the key module 120 , The intermediate piece 2025 is by means of the connecting sections 236 with the wing elements 230 connectable. The keycap 125 is with the intermediate piece 2025 coupled.

21 shows a partial exploded view of a button module 120 according to an embodiment. The key module 120 corresponds to the key module from one of the 2 to 9 or. 19 except that the carrier element 250 anchoring portions 2156 for anchoring a stabilizer bar 2190 for stabilizing an upper part for the key module 120 with regard to torques and bending moments. The anchoring sections 2156 are shaped in the form of eyelets. According to the embodiment shown here are on the support element 250 exemplified two anchoring sections 2156 formed. The upper part for the key module 120 here has the keycap 125 on. The stabilizer bar 1190 is bent in a U-shape. The stabilizer bar 1190 is in the anchoring sections 2156 anchored. According to one embodiment, the key module 120 the stabilizer bar 1190 on.

22 shows an oblique view of a portion of a key module according to an embodiment. The in 22 Part shown corresponds to the in 7 shown section except that two spring elements 240 are provided, which are designed as compression springs, and in the illustration a carrier element 250 which is similar to the carrier element of one of the above-described figures, wherein partially the wing elements 230 and the carrier element 250 constructive to the spring elements 240 are adjusted.

Each of the spring elements 240 extends along a coupled pair of arms of the wing members 230 , The attachment sections of the wing elements 230 are in the representation of 22 through the receiving sections 252 having wall sections of the support element 250 covered. The wing elements 230 are over the coupling sections 731 and 733 coupled together and have the bearing sections 234 as well as the connecting section 236 on.

23 shows a partial exploded view of a button module 120 according to an embodiment of the present invention. The key module 120 according to the in 23 embodiment of the present invention corresponds to the key module of one of the figures described above, with the exception that the housing 270 and the contact device 280 the switching unit and the connecting portion 236 each wing element 230 differently shaped and the key module 120 additionally an auxiliary operator 2392 having.

The representation in 23 here resembles the representation from 2 or 20 , In 23 are from the button module 120 especially the keycap 125 , the wing elements 230 with the attachment sections 232 , the bearing sections 234 and the connecting sections 236 , the spring element 240 , the carrier element 250 with the recording sections 252 , the case 270 with the groove 272 , the subsection 1376 , two actuation openings 2371 and a support portion 2375 , the contact device 280 with the fixed contact piece 1482 , the contactor 1484 , the first spring tab 1486 , two operating sections 1488 and a second spring tab 2387 and the assistant worker 2392 shown.

In the case 270 are according to the in 23 illustrated embodiment of the present invention by way of example two actuating openings 2371 for exposing the at least one operating portion 1488 the contact device 280 formed. Furthermore, the housing has 270 at least one mounting portion 2375 to hold the assistant operator 2392 on. The at least one mounting portion 2375 is formed according to the illustrated embodiment of the present invention as a pin. The housing 270 is on the support element 250 arranged. The assistant worker 2392 is formed to the contact device 280 to press. Here is the auxiliary operator 2392 molded from a plastic material. The contactor 1484 the contact device 280 has in addition to the second contact bearing first spring tab 1486 the second spring tab 2387 for generating an operation sound. Here, the first spring tab 1486 an operating section 1488 on. Furthermore, the second spring tab 2387 also an operating section 1488 on. Here is the contactor 1484 integrally formed. In particular, the contactor 1484 formed as a stamped part or stamped and bent part of a metal material.

On the case 270 , on the contact device 280 and the assistant worker 2392 will be discussed in more detail with reference to the following figures.

24 shows a partial exploded view of parts of the key module 120 out 23 , The illustration corresponds to 24 the presentation 23 except that the key cap is omitted in the illustration.

25 shows an oblique plan view of the switching unit 260 and the carrier element 250 out 23 or. 24 in a partially assembled state. In this case, the contact device is partially in the housing 270 added. The operating sections 1488 the contact device are through the actuating openings 2371 of the housing 270 visible through.

26 shows the contact device 280 out 23 . 24 or. 25 , It is the on the fixed contact piece 1482 arranged first contact 1583 also explicitly designated. The first spring tab 1486 and the second spring tab 2187 extend side by side and over the fixed contact piece 1482 time. Also in the presentation of 26 more precisely recognizable that the first spring tab 1486 in the operation section 1488 rejuvenated. The operating section 1488 the second spring tab 2387 indicates one of the first spring tab 1486 side facing away from a kink, on which the actuating portion 1488 towards the fixed contact piece 1482 and the first spring tab 1486 formed bent back.

27 shows the assistant operator 2392 out 23 or. 24 in an oblique bottom view. The assistant worker 2392 has according to the embodiment of the present invention shown here, two mounting portions 2794 , two noses 2796 and three fixation sections 2798 on. The assistant worker 2392 is integrally formed, for example, of a plastic material.

The attachment sections 2794 are shaped to allow the auxiliary operator to move 2392 to enable the at least one support portion of the housing of the switching unit. The attachment sections 2794 For example, are formed arcuate or hook-shaped and formed for receiving the at least one support portion by snapping or snapping.

The noses 2796 are formed to deflect the first spring tab and / or the second spring tab of the contact device upon actuation of the key module. According to a further embodiment, in which the contact device is formed differently, the Hilfsbetätiger 2392 only a nose 2796 and / or at least one differently shaped nose 2796 respectively.

The fixation sections 2798 are formed to the auxiliary operator 2392 to fix on the first wing element or the second wing element. Here are the fixation sections 2798 formed as projections. According to another embodiment, the Hilfsbetätiger 2392 another number of fixation sections 2798 and / or differently shaped fixation sections 2798 respectively.

28 shows the assistant operator 2392 out 23 . 24 or. 27 in an oblique top view. This is due to the presentation of one of the noses 2796 through one of the fixation sections 2798 covered. It can be seen that the fixation sections 2798 are arranged and shaped around the web of one of the wing members between one of the fixing sections 2798 on the one hand and the remaining two fixation sections 2798 on the other hand.

29 shows a partial exploded view of parts of the key module 120 out 24 in a partially assembled state. Here is the spring element 240 in each case a fastening section 232 of the first wing element 230 of the second wing element 230 hooked. Furthermore, the wing elements 230 Coupled with each other via their coupling sections. The switching unit and the carrier element 250 are in the state of 25 shown. Thus, the contact device is at least partially in the housing 270 added.

30 shows an oblique top view of the key module 120 out 24 or. 29 in a mounted and unactuated condition. Here are the wing elements 230 on the carrier element 250 attached, the bearing sections 234 the wing elements 230 in the recording sections 252 the carrier element 250 are arranged. The assistant worker 2392 is by means of its attachment portions on the housing 270 attached and by means of its fixing sections on one of the wing elements 230 fixed. Here is an extension level of the Hilfsbetätigers 2392 relative to an extension plane of the housing 270 inclined.

31 shows an oblique top view of the key module 120 out 24 . 29 or. 30 in a mounted and operated state. It can be seen that the spring element 240 in the groove 272 of the housing 270 immersed is arranged. Part of one on the wing elements 230 applied actuating force is on the Hilfsbetätiger 2392 transferred to the contact device of the switching unit. Here is the extension level of the Hilfsbetätigers 2392 in the actuated state of the key module 120 along the plane of extent of the housing 270 aligned.

32 shows a side view of the button module 120 out 30 , The representation is similar in 32 the presentation 12 , In the side view of 32 are from the button module 120 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 subsection of the auxiliary operator 2392 shown. Furthermore, a cutting line AA for a sectional view or partial sectional view through the key module 120 located. The cutting line AA runs here transversely to a longitudinal axis of the spring element 240 ,

33 shows a partial sectional view of the key module 120 out 32 along the cutting line AA , Here are the partial sectional view of 33 from the key module 120 while sections of one of the wing elements 230 with two of the attachment sections 232 , Subsections of the spring element 240 , Subsections of the support element 250 , Subsections of the housing 270 with a deflection section 3373 , Subsections of the auxiliary operator 2392 with the two noses 2796 and sections of the contact device with the first spring tab 1486 , the second spring tab 2387 , the first contact 1583 as well as the second contact 1585 shown.

Here it can be seen that a first of the noses 2796 of the auxiliary operator 2392 for actuating or deflecting the first spring tab 1486 and thus to close the contacts 1583 and 1585 is formed and arranged. It can also be seen that a second of the noses 2796 of the auxiliary operator 2392 for actuating or deflecting the second spring clip 2387 is formed and arranged to generate an operating noise. Here is the deflection section 3373 of the housing 270 shaped to the second spring tab 2387 the contact device 280 distract when the button module 120 is pressed. The deflection section 3373 is with respect to a movement or movement axis of the key module 120 during the operation of the same obliquely formed. Here is a bending angle of the operating portion of the second spring tab 2387 larger than an inclination angle of the deflecting portion 3373 relative to the axis of movement. Thus, an end edge of the second spring tab 2387 from the deflecting section 3373 spaced apart. Thus, friction, scratching and the like between the deflecting section 3373 and the operating portion of the second spring tab 2387 minimized or prevented.

When pressing the button module 120 a movement of the wing elements takes place 230 About the assistant worker 2392 on the first spring tab 1486 and the second spring tab 2387 is transmitted. In such a deflection movement of the first spring tab 1486 get the first contact 1583 and the second contact 1585 in contact with each other. Furthermore, in such a deflection movement of the second spring tab 2387 the same at its operating portion by the deflection section 3373 laterally distracted. Due to the inclination or inclination of the deflection section 3373 relative to the movement, the lateral deflection of the second spring tab decreases 2387 with increasing deflection, until the operating portion of the second spring tab 2387 from the nose pressing him 2796 of the auxiliary operator 2392 slips and it to a operating noise generating kickback of the second spring tab 2387 against the case 270 or the auxiliary operator 2392 comes.

With reference to the figures described above, embodiments will now be described in summary and in other words.

A foundation of the key module 120 forms in particular a double-wing mechanism, which in addition to the task of guiding the key in parallel, also takes over the task of the provision and the specific force-displacement curve. The wing elements 130 The double-wing mechanism, for example, designed as stampings. This allows a cost-effective production of parts made of high-strength steel and thus results in advantages in terms of stiffness and wear. It is also conceivable to mold the parts, for example made of plastic. In addition, the wing elements 230 designed as a common part and it will ever key module 120 two wing elements 230 used. The double-wing mechanism is designed, for example, for an optimum actuation travel of about 1.5 millimeters or the like.

To reduce adverse game play, the wing elements are 230 not designed as a hinge, but by means of bearing notches or the receiving sections 252 , wherein a pivoting movement can be carried out only in a predefined angular range. Because the two wing elements 230 by means of the at least one spring element 240 clamped together and in the receiving sections 252 are pressed, move the two wing elements 230 free of play or low in playing and quiet. The wing elements 230 are through the coupling sections 731 and 733 or also connected to each other by scenes, resulting in an operation of the key module 120 resulting counter-rotating circular movements of both wing elements 230 decouple. The recording sections 252 , Storage sections 234 , Scenes or first coupling section 731 and fastening sections 232 or spring suspensions are arranged so that the key module 120 during the operation after an early Maximum has a falling force-displacement curve.

This means that in the rest position, a restoring force is highest. In the end position or in the fully actuated state, the restoring force approaches zero. The force-displacement curve can be adjusted 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 keycap 125 is by means of two snapper on as biased balancing springs or flat springs running connecting sections 236 the wing elements 230 engaged and is thus free of play stored floating. During operation, the upper part moves 125 or. 125 and 2025 evenly or parallel to the carrier element 250 , Because a rigidity of the metallic wing elements 230 is high and a total game in the leadership is minimized moves the shell 125 or. 125 and 2025 or key top precisely and evenly. Surrounded by the guide mechanism is the mechanical rear derailleur 260 , which forms a classic, mechanical switch.

The rear derailleur has the housing 270 and the contact device 280 with two contact parts on: the fixed contact piece 1482 and the resilient contactor 1484 , Both contact parts are equipped, for example, with so-called crosspoint gold contacts, which the life and reliability of the switching unit 260 improved. The housing 270 The rear derailleur also performs an optical function, the housing 270 is configured to direct light from a light source and on an inner surface of the key cap 125 to distribute.

At the beginning of the operation, an actuating force increases abruptly, because the guide mechanism by the at least one spring element 240 preloaded and the restoring force in the rest position is highest. This behavior of the button module 120 allows a realization of a very low flow path, in particular it can be avoided that by accidental key touch by mistake a key command is triggered. In a rubber bell as a switching unit, the increase in force would be much flatter and with a longer flow path. After a predefined flow path, an actuating element touches the key cap 125 the at least one operating section 1488 or an actuating tongue of the contactor 1484 and after a defined path become the contacts 1583 and 1585 or the crosspoint contacts closed. From this contact, the force-displacement curve of the button module changes 120 , as the force-displacement curve of the rear derailleur or the switching unit 260 is integrated into the force-displacement course of the leadership. From the contact touch, the stiffness of the contactor changes 1484 so that the switching point can be perceived by skilled users, the force-displacement curve having a kink. This can be advantageous, inter alia, in computer games, since continued operation of the key is not absolutely necessary and an action speed and effectiveness in the game can thereby be increased. In a further operation or a follow-up travel of the spring body of the at least one spring element 240 on a lower cam 1978 or support cams of the rear derailleur housing or housing 270 , From this moment, the spring body begins to bend and makes a rising force curve, which softens the keystroke.

The rear derailleur or the switching unit 260 is in a socket or the carrier element 250 snapped. The carrier element 250 of the button module 120 is executed, for example, as a stamped part, so that the key module 120 as a single, SMD solderable part can be realized. This allows the switching units 260 in an assembly process simultaneously with other SMD parts such as LEDs, resistors, diodes, etc. on the circuit substrate 110 to equip flexibly by means of a standard SMD placement system. This reduces the overall manufacturing cost, makes the design of the keypad of a keyboard 100 flexible and saves investment in machinery, equipment and tools. Due to flat solder pads or solder pads 554 and 582 an independence arises from a thickness of the circuit substrate 110 and can the button modules 120 for example, be fitted on circuit boards. Alternatively, the key module 120 be realized with conventional plug connections and soldered as usual with wave soldering.

Below are different variants for the upper part 125 and or 2025 briefly presented. In a simplified embodiment, the upper part in the form of the key cap 125 be realized as a single part. In that case, keycaps 125 individually or as an entire keypad painted, for example, and then be labeled on any country variants by laser process. Optionally, the upper part as an intermediate piece 2025 provided as a standard part. The keycap 125 can then be realized as a simple shell and on the intermediate piece 2025 be snapped up. In this case, a label as described above. Alternatively, key symbols can be made using, for example, two-component technology. A conversion of country variants is done by replacing keycaps 125 , The keycap 125 and / or the intermediate piece 2025 can be provided by the customer.

The stabilizer bar 2190 or key stabilizer can be realized inexpensively. As a stabilizer bar 2190 For example, a round wire bent into the U-shape can be used. The middle part of the stabilizer bar 2190 gets into the keycap 125 or in the intermediate piece 2025 Snapped and thereby rotatably mounted by means of rotary hinges. The carrier element 250 is with two additional tabs in the form of anchoring sections 2156 formed. Each anchoring section 2156 has, inter alia, an angled portion, each with a hole for a leg of the stabilizer bar 2190 on. When mounting, the legs of the stabilizer bar 2190 stuck in the holes. The anchoring sections 2156 in addition to other solder pads of the circuit substrate 110 be soldered. This increases a mechanical strength of the key module 120 , By means of the stabilizer bar 2190 For example, a multi-mechanism for elongated keys and protection against torque and bending as well as for lateral stability can be provided. The anchoring sections 2156 For example, with the carrier element 250 to be punched.

The key 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 backlash-free, uniform movement of the top 125 and or 2020 on. 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 actuation has a maximum after a minimum actuation travel and then an approximately linearly declining course until after a vertex up to a contact between the at least one spring element 240 and the cam 1928 and or 1978 on.

If an exemplary embodiment comprises a "and / or" link between a first feature and a second feature, this can be read so that the embodiment according to one embodiment, both the first feature and the second feature and according to another embodiment, either only the first Feature or only the second feature.

reference numeral

100

keyboard

110

circuit substrate

120

key module

125

keycap

230

wing element

232

attachment section

234

bearing section

236

connecting portion

238

end

240

spring element

250

support element

252

receiving portion

260

switching unit

270

casing

272

groove

280

contactor

554

soldering

574

receiving bay

582

soldering

731

first coupling section

733

second coupling section

1335

web

1337

first arm

1339

second arm

1376

part Of

1482

Fixed contact piece

1484

contactor

1486

first spring tab

1488

actuating section

1583

first contact

1585

second contact

1928

upper cam

1978

lower cam

2025

connecting piece

2156

anchoring section

2190

stabilizer bracket

2371

actuating opening

2375

support portion

2387

second spring tab

2392

auxiliary actuator

2794

mounting portion

2796

nose

2798

fixing section

3373

deflection

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1612821 A2 [0003]

Claims (18)

Key module (120) for a keyboard (100), wherein the key module (120) has the following features: a first wing member (230) and a second wing member (230) for guiding movement of the key module (120) upon actuation, each wing member (230) having a land (1335), a first arm (1337) and a second arm (1339), wherein the arms (1337, 1339) extend away from the web (1335), wherein on the web (1335) an attachment portion (232) is formed, wherein on the first arm (1337) a first bearing portion (234) is formed for supporting the wing member (230), wherein on the second arm (1339) a second bearing portion (234) for supporting the wing member (230) is formed, wherein the first wing member (230) and the second wing member (230) are mechanically coupled to each other; at least one spring element (240) for providing a restoring force upon actuation of the key module (120), wherein the at least one spring element (240) on the attachment portion (232) of the first wing member (230) and the attachment portion (232) of the second wing member (230 ) is attachable; and a support member (250) for supporting the wing members (230), wherein in the support member (250) a plurality of receiving portions (252) for receiving the bearing portions (234) of the wing members (230) are formed. Button module (120) according to Claim 1 in that each wing member (230) has coupling portions (731, 733) for mechanically coupling the wing members (230) together, wherein at one end of the first arm (1337) of each wing member (230), a first coupling portion (731) is formed at one end of the second arm (1339) of each wing member (230), a second coupling portion (733) is formed. Button module (120) according to Claim 2 wherein the first coupling portion (731) and the second coupling portion (733) are formed differently, the first coupling portion (731) of the first wing member (230) being coupleable to the second coupling portion (733) of the second wing member (230), and wherein the second coupling portion (733) of the first wing member (230) is couplable with the first coupling portion (731) of the second wing member (230). Button module (120) according to one of Claims 2 to 3 wherein the first coupling portion (731) is formed as a gate and the second coupling portion (733) is formed as a projection portion, or wherein the first coupling portion (731) and the second coupling portion (733) are formed as teeth. A key module (120) according to any one of the preceding claims, wherein the first wing member (230) and the second wing member (230) are formed identically to each other, and / or wherein each wing member (230) is integrally formed, and / or wherein each wing member (230) 230) is formed from a metal material. A key module (120) according to any one of the preceding claims, wherein each wing member (230) has at least one connecting portion (236, 238) for connecting the wing member (230) to a top portion (125; 2025) for the key module (120) Upper part (125, 2025) has a key cap (125) or with a key cap (125) is coupled. Button module (120) according to Claim 6 in that the at least one connecting portion (236, 238) is shaped as an elastically deformable beam portion (236) or as an elastically deformable beam portion (236) having an end portion (238) bent into a base area of the web (1335) , A key module (120) according to any one of the preceding claims, wherein the carrier member (250) has pads (554) or pins for attaching the carrier member (250) to a circuit substrate (110) of the keyboard (100), and / or wherein the carrier member (50) 250) is formed of a metal material. A key module (120) according to any one of the preceding claims, wherein the support member (250) has at least one anchoring portion (2156) for anchoring a stabilizer bar (2190) for stabilizing a top (125; 2025) for the key module (120) in terms of torques and bending moments , Button module (120) according to one of the preceding claims, wherein the at least one spring element (240) is formed as a tension spring or as a compression spring. A key module (120) according to any one of the preceding claims, comprising at least one cam (1928, 1978) for deforming the at least one spring element (240) in an actuated state of the key module (120), the at least one cam (1928, 1978) on the Carrier element (250), on a switching unit (260) and / or on an upper part (125; 2025) for the key module (120) is formed, wherein the upper part (125; 2025) has a key cap (125) or with a key cap ( 125) can be coupled. Button module (120) according to one of the preceding claims, comprising a switching unit (260), wherein the switching unit (260) comprises a housing (270) and at least partially in the housing (270) arranged contact means (280) for making an electrical contact in a Operation of the key module (120), wherein the contact means (280) has a fixed contact piece (1482) with a first contact (1583) and a contactor (1484) with a second contact (1585) carrying the first spring tab (1486) and / or second spring tab (2387) for generating an operating noise and / or at least one actuating portion (1488), wherein the contactor (1484) is integrally formed. Button module (120) according to Claim 12 in which the housing (270) is formed at least in a part section (1376) of a transparent or opaque material and / or at least in a partial section (1376) as at least one lens, and / or wherein the housing (270) has a receiving bay ( 574) for a light source, and / or wherein in the housing (270) at least one groove (272) for receiving at least a portion of the at least one spring element (240) in an actuated state of the key module (120) is formed. Button module (120) according to one of Claims 12 to 13 in that the contact means (280) includes pads (582) or pins for attaching the switch unit (260) to a circuit substrate (110) of the keyboard (100), and / or wherein the contact means (280) is shaped to make the electrical contact to produce friction between the first contact (1583) and the second contact (1585). Button module (120) according to one of Claims 12 to 14 in that the housing (270) has an actuation opening (2371) for exposing the at least one actuation section (1488) of the contact device (280) and / or a deflection section (3373) for deflecting the second spring tab (2387) of the contact device (280) in the case of Operation of the key module (120), wherein the deflecting portion (3373) is obliquely inclined relative to the movement of the key module (120) in the operation. Button module (120) according to one of Claims 12 to 15 with an auxiliary actuator (2392) for actuating the contactor (280), the housing (270) having at least one support portion (2375) for holding the auxiliary actuator (2392), the auxiliary actuator (2392) having at least one mounting portion (2794) for movement Attaching the auxiliary actuator (2392) to the at least one mounting portion (2375) of the housing (270) and / or at least one lug (2796) for deflecting the first spring tab (1486) and / or the second spring tab (2387) of the contactor (280) upon actuation of the key module (120). Button module (120) according to one of Claims 12 to 16 in that the auxiliary actuator (2392) has at least one fixing portion (2798) for fixing the auxiliary actuator (2392) to the first wing member (230) or the second wing member (230). Keyboard (100), the keyboard (100) having the following features: 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 disposed on the circuit substrate (110).

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