DE102022116942A1 - Key module for a keyboard and keyboard - Google Patents

Abstract

A key module (120) for a keyboard (100) is presented. The key module (120) comprises a guide device (230) which is designed to guide a movement of the key module (120) during operation between a rest position and an actuation position. The guide device (230) can be coupled to a key cap (125) for the keyboard (100). The key module (120) also includes a switching unit (260) that can be triggered by the guide device (230). The key module (120) further comprises a carrier element (250) for carrying the guide device (230) and the switching unit (260). The carrier element (250) and the switching unit (260) can be attached to a circuit substrate (110) of the keyboard (100). The key module (120) also includes a damper element (290) for dampening a stop of the key cap (125) in the actuation position of the key module (120). The damper element (290) is arranged to be in contact with the key cap (125) in the actuation position of the key module (120).

Description

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

Different key systems can be used for keyboards, such as those used in connection with computers. A mechanical key switch in particular can be used as a possible type of key switch for the individual keys of a keyboard. Such mechanical switches can, for example, generate audible keystroke noises, which may only be desirable in certain keyboard applications.

Against this background, the present invention provides an improved key module for a keyboard and an improved keyboard according to the main claims. Advantageous refinements result from the subclaims and the following description.

According to embodiments of the approach described here, in particular a mechanical switch, also called a mechanical key switch, can be provided with an acoustic damping function or an acoustic damper for a flat keyboard. The damping function or the damper can dampen operating noises, in particular impact noises, when the mechanical switch, also called a key module, is actuated. The damper or the damping function can be implemented in different ways depending on the requirements of a specific keyboard application.

Advantageously, according to embodiments, noise minimization in particular can be realized for an acoustic switch for flat keyboards. In addition to the known advantages of mechanical switches, damping of impact noises in particular can also be achieved. In certain specific applications, such as B. office applications in which loud impact noises could be perceived as disturbing, impact noises when pressing the keys can be dampened, although kickback noises can be comparably quiet anyway. A good way to minimize the impact noise can be to place a soft component in the form of the damper element in the key module. The key cap can hit the soft component and the stop can be cushioned by the soft component. A direct collision or a direct impact on hard components of the key module can be avoided. This can reduce the generation of structure-borne noise. This can significantly minimize the generation of acoustic noise. For example, through a suitable choice of a thickness and additionally or alternatively a Shore hardness, a force-distance curve can advantageously be set in a precisely defined manner when the key module is actuated immediately before the actuation position. Furthermore, a very flat mechanical key module can thus be provided, for example for office applications, in particular for high-end office applications or office applications in the upper segment and the like. The switch module can be used, for example, in notebooks and flat keyboards. Such a button module can, for example, also meet very flat dimensions requirements, while additional sound insulation can be achieved. A service life of the key module can also be achieved, which can be in the range of classic mechanical key modules, for example.

• eine Führungseinrichtung, die ausgeformt ist, um eine Bewegung des Tastenmoduls bei einer Betätigung zwischen einer Ruhestellung und einer Betätigungsstellung zu führen, wobei die Führungseinrichtung mit einer Tastenkappe für die Tastatur koppelbar ist;
• eine Schalteinheit, die durch die Führungseinrichtung auslösbar ist;
• ein Trägerelement zum Tragen der Führungseinrichtung und der Schalteinheit, wobei das Trägerelement und die Schalteinheit an einem Schaltungssubstrat der Tastatur anbringbar sind; und
• ein Dämpferelement zum Dämpfen eines Anschlags der Tastenkappe in der Betätigungsstellung des Tastenmoduls, wobei das Dämpferelement angeordnet ist, um in der Betätigungsstellung des Tastenmoduls in Kontakt mit der Tastenkappe zu sein.

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

• a guide device configured to guide movement of the key module upon operation between a rest position and an actuated position, the guide device being coupled to a keycap for the keyboard;
• a switching unit that can be triggered by the guide device;
• a support member for supporting the guide device and the switching unit, the support member and the switching unit being attachable to a circuit substrate of the keyboard; and
• a damper element for dampening a stop of the key cap in the actuation position of the key module, the damper element being arranged to be in contact with the key cap in the actuation position of the key module.

The keyboard can be intended for a computer or the like, for example. The keyboard can have at least one key module. The key module can be part of a key or represent a key. One key module can therefore be provided per key. The key module can also be referred to as a mechanical button or mechanical key switch. The guide device can have a double wing mechanism. The carrier element can be formed from a metal material. In the circuit The substrate can be, for example, a circuit board, circuit board or the like. The damper element can have an elastomer or be formed from the same. In particular, the damper element can have rubber, silicone or the like. The switching unit can have or function as a mechanical switch, an optical switch, an inductive switch, also with a coil arrangement on the circuit substrate, or a magnetoinductive switch based on a Hall sensor. In other words, the switching unit can have a mechanical, optical, inductive, magnetoinductive or other operating principle.

According to one embodiment, the damper element can be arranged to be in contact with the key cap only in the actuation position of the key module. The contact between the damper element and the key cap can only or exclusively exist in the actuation position of the key module.

According to one embodiment, the damper element can have a circumferentially shaped frame with a rectangular floor plan for framing the support element, the guide device and the switching unit. Such an embodiment offers the advantage that a simple and effective integration of the damper element into an existing key module, for example, is made possible.

The damper element can also have an elastic mat or plate. Such an embodiment offers the advantage that a reliable and structurally simple type of sound attenuation can be achieved by the key cap hitting the damper element.

Furthermore, the damper element can have a continuously formed height profile with a plurality of elevations and a plurality of depressions on one side of the contact with the key cap. The elevations can be shaped as cones, truncated cones, pyramids, truncated pyramids, spherical segments, spherical sections or the like. In particular, the damper element can be designed as a profiled rubber mat. Such an embodiment offers the advantage that, on the one hand, a soft overall touch of the key cap can be achieved and, on the other hand, the use of a height profile, for example a profiled mat, can stimulate a compression and/or bonding effect that can be generated in the actuation position. This effect could otherwise lead to a switch-back delay, which can therefore be prevented. In addition, the profiled surface on the side of contact with the key cap can achieve a further advantage in terms of reducing the spread of sound.

According to one embodiment, the damper element can have at least one pointed or curved projection section on one side of contact with the key cap, which can be in contact with the key cap in the actuation position of the key module. The projection portion may have a triangular or round cross-sectional profile. A damper element shaped in this way, for example in the form of a rubber mat with the at least one projection section, can be produced as a profile pressed part. The damper element, for example, which is shaped all around, can therefore have different heights in the cross section at different points. Such an embodiment offers the advantage that the damping behavior can be further improved. By appropriately choosing the cross section, height and Shore hardness of the profile or damper element, a defined and specific force-path curve can also be set. In this way, a non-linear, e.g. B. progressive force-distance curve can be realized.

In addition, the damper element can be coated with a film on one side of contact with the key cap. In particular, the film can have a predefined colored, shiny or reflective surface. Such an embodiment offers the advantage that handling of the damper element during assembly can be simplified and optionally additional optical effects can be realized. Introducing the damper element in the form of a soft grid mat, for example over the entire circuit board of the keyboard, can be a challenge, especially if the damper element includes self-adhesive mounting layers. To make handling easier, e.g. B. the top of the damper element can be provided with a stabilizing film. This can make assembly much easier. In addition, the film can represent a decorative surface, which creates a visible gap between the frame and key caps of the keyboard, for example. B. can refine color, shine, reflection or other special effects.

The damper element can also be arranged to be in contact with an edge section of the key cap in the actuation position of the key module. Such an embodiment offers the advantage that contact between the damper element and the key cap can be limited to only a small contact area, thereby limiting movement of the key module back to rest position can remain unhindered by the contact.

Furthermore, the damper element can be shaped to be in contact with corner regions of the key cap in the actuation position of the key module. For example, a frame-shaped damper element can be widened in corner areas. Such an embodiment offers the advantage that by reducing the contact area between the key cap and the damper element, damper elements with very low Shore hardness can also be used safely. For example, a support or contact can only be made at the corners of the key cap.

The damper element can also be shaped to be in contact with sections of side edges of the key cap in the actuating position of the key module. For example, a frame-shaped damper element can be widened in sections in the middle of its side edges. Such an embodiment offers the advantage that by reducing the contact area between the key cap and the damper element, damper elements with very low Shore hardness can also be used safely. For example, a touch or contact in the middle of the keycap walls can be achieved.

According to one embodiment, the damper element can be attachable to the circuit substrate. Such an embodiment offers the advantage that it offers a good opportunity to minimize any impact noise. The edge of the key cap can strike the damper element, which is a soft component, for example a type of rubber mat, and the stop can be cushioned by the soft component. In addition, decoupling the circuit substrate from other components, such as a frame or a front panel of a notebook or the keyboard, by means of a soft component has the further advantage that structure-borne noise transmission from the circuit substrate with switches to the frame front can be significantly dampened. It can also be achieved that the circuit substrate itself can generate significantly less acoustic sound, since it is clamped together with the soft component and can therefore vibrate significantly less.

According to one embodiment, the damper element can be attached to the switching unit. Such an embodiment offers the advantage that a further configuration option can be implemented, whereby a stop damper can thus be integrated with the switching unit. This configuration option can be provided in addition to or as an alternative to attaching the damper element to the circuit substrate. The damper element can optionally be designed in several parts.

The damper element can be arranged to be in contact with a rear surface of the key cap in the actuating position of the key module. Such an embodiment offers the advantage that during the actuation of the key module and thus the switch, the back surface or inner wall of the key cap hits the damping element after a certain path and the same can increasingly form when further force is applied. This also allows the stop to be cushioned and the generation of noise can be minimized.

Furthermore, the damper element can be shaped like a dome. Such an embodiment offers the advantage that a desired force-distance curve can be achieved through the contour of the damper element.

In particular, the damper element can be arranged in a through opening in the switching unit. Here, the damper element can be made of a transparent material and additionally or alternatively be formed as a diffusing lens. Such an embodiment offers the advantage that a stop damper can be integrated, for example, into a housing of the dummy unit. A soft component, for example made of silicone, can be mounted in the through opening in the housing. The damper element can be formed from a transparent or translucent material and optionally also function as a diffusing lens. Light from an LED or another light source can be coupled onto the underside of the damper element, refracted several times and scattered in a targeted manner on the outside of the damper element. This can improve the illumination of the keycap. The damper element can also be realized by pouring a soft component, such as silicone adhesive, into a housing recess of the switching unit.

According to one embodiment, the guide device can have a first wing element and a second wing element. Each wing element can have a web, a first arm and a second arm. The arms can extend away from the bridge. A fastening section can be formed on the web. A first bearing section for supporting the wing element can be formed on the first arm, and a second bearing section for supporting the wing element can be formed on the second arm. The first wing element and the second wing Gel elements can be mechanically coupled to one another. Furthermore, at least one spring element can be attachable to the fastening section of the first wing element and the fastening section of the second wing element for providing a restoring force when the key module is actuated. A plurality of receiving sections for receiving the bearing sections of the wing elements can also be formed in the carrier element. The receiving sections of the carrier element can be shaped as bearing notches, incisions or the like. In other words, the receiving sections of the carrier element can be notch-shaped, V-shaped and additionally or alternatively dovetail-shaped. The carrier element can be formed in one piece. Such an embodiment offers the advantage that a mechanical system or guide mechanism can be provided which has a double-wing unit and an elastic means coupled to the double-wing unit. In this way, for example, identical-sided, synchronous and backlash-free or low-backlash guidance or parallel guidance of an upper part of the key module can be achieved. A force-travel curve of the button module with regard to an actuation can also be set by the manufacturer, by the customer and additionally or alternatively by the user. The key module can, for example, allow customer-specific further processing by the user. The key module can also have at least one spring element for providing a restoring force when the key module is actuated. The at least one spring element can be designed in particular as a tension spring or as a compression spring. The at least one spring element can also be referred to as an elastic means. Such an embodiment offers the advantage that a defined force-path curve for actuation of the key module as well as a structurally simple, reliable provision of a restoring force that can be adjusted by replacing the at least one spring element can be made possible. In addition, a compression spring can also optionally serve as a bending link.

According to one embodiment, the switching unit can have a housing and a contact device arranged at least partially in the housing for establishing an electrical contact when the key module is actuated. Here, the contact device can have a fixed contact piece with a first contact and a contactor with a first spring tab carrying a second contact and a second spring tab for generating an actuation noise and at least one actuation section. The contactor can be formed in one piece. The housing can have at least one wall or a wall section. The housing can be shaped as a hood, a cage or the like. The housing can have one part or several parts. The at least one actuation section can be pressed by an upper part of the button or an auxiliary actuator. The electrical contact can be established in a contact point between the first contact and the second contact. Each contact can be elongated and additionally or alternatively have a line-shaped contact area. A contact area of the first contact and a contact area of the second contact may intersect. Each contact area can extend obliquely to a longitudinal axis of the first spring tab. The second spring tab can have an actuating section that is angled, bent or curved. The second spring tab may be shaped to produce the actuation sound upon kickback against the housing or another part. Such an embodiment offers the advantage that a reliable and robust switching unit with an electrical function and an acoustic function can be implemented in a structurally simple and cost-neutral manner. Alternatively, the contactor of the contact device can have the first spring tab carrying the second contact and the at least one actuating section. The switching unit can be designed as a mechanical switching unit. Such an embodiment offers the advantage that a reliable and robust switching unit with an electrical function can be implemented in a structurally simple and cost-neutral manner. Additionally or alternatively, at least one groove can be formed in the housing for receiving at least a partial section of at least one spring element for providing a restoring force when the key module is actuated in an actuated state of the key module. The at least one groove can also be referred to as a depression section, an elongated trough or a groove. Such an embodiment offers the advantage that a saving of installation space for the key module can be achieved by at least one groove by at least partially immersing the at least one spring element in the groove.

According to one embodiment, the housing of the switching unit 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 tab of the contact device when the key module is actuated. Here, the deflection section can be designed to be inclined at an angle relative to the movement of the key module during actuation. The deflection section can be curved, slightly stepped, shaped as a knob or a cam or the like. The deflection section can be designed to cause a deflection or deflection of the second spring tab transversely or obliquely with respect to the movement of the button module during actuation. An angle of inclination of the deflection section relative to the movement of the key module during actuation can be smaller than an angle of inclination of an angled or bent actuation section of the second spring tab. 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 tab can be achieved in order to cause the second spring tab to kick back for the purpose of generating noise. The housing can also be formed at least in a partial section from a transparent or opaque material and additionally or alternatively at least in a partial section as at least one lens. Additionally or alternatively, the housing can have a receiving bay for a light source. The at least one lens can be designed to distribute light from a light source over the top part of the key module and additionally or alternatively over the key cap. The at least one lens can be designed to focus or scatter 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. In addition, the key module can support uniform and economical illumination of a key cap or a top part by a light source or a light source that can be integrated.

In addition, the contact device of the switching unit can have soldering surfaces or connection pins for attaching the switching unit to the circuit substrate of the keyboard. Additionally or alternatively, the contact device can be shaped to produce the electrical contact by generating friction between the first contact and the second contact. Such an embodiment offers the advantage that contact deterioration due to contamination by particles can be avoided. According to one embodiment, the carrier element may have soldering pads or connection pins for attaching the carrier element to a circuit substrate of the keyboard. Such an embodiment offers the advantage that the key module can be attached directly to a circuit board or the like.

The key module can also have an auxiliary actuator for actuating the contact device of the switching unit. Here, the housing of the switching unit can have at least one holding section for holding the auxiliary actuator. The auxiliary actuator can have at least one attachment section for movably attaching the auxiliary actuator to the at least one holding section of the housing. Additionally or alternatively, the auxiliary actuator can have at least one nose for deflecting the first spring tab and additionally or alternatively the second spring tab of the contact device when the key module is actuated. Using the mounting portion and the mounting 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 can be shaped to generate the operating noise in the event of a kickback against the auxiliary actuator. The auxiliary actuator can 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 nose for deflecting the second spring tab. Such an embodiment offers the advantage that the contact device can be actuated in a robust and simple manner, whereby an embodiment of the contactor with two spring tabs can be implemented in a structurally inexpensive manner. Furthermore, the auxiliary actuator can have at least one fixing section for fixing the auxiliary actuator to the guide device. The auxiliary actuator can be carried along or moved along in at least one direction of movement via the at least one fixing section when the key module is actuated by the guide device. The at least one fixing section can be shaped as a projection. Such an embodiment offers the advantage that when the key module is actuated, an electrical contact and additionally an integrated generation of the actuation noise can be achieved in a reliable and robust manner. This can also be achieved using a minimal 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, with the keyboard having the following features:

• at least one example of an embodiment of the above-mentioned key 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 conjunction with the keyboard. The at least one key module is directly on the circuit substrate attachable, for example by soldering or inserting contact pins.

Furthermore, the keyboard can have at least one key cap, which can be coupled to the guide device of the at least one key module.

The at least one key cap can have a plurality of knobs, which can be arranged to be in contact with the damper element in the actuating position of the key module. Such an embodiment offers the advantage that the keycap can be designed in such a way that, for example, knobs can be arranged on the keycap corners, which facilitate displacement of the material of the damper element, so that an overall stop of the keycap feels significantly softer.

The keyboard can also have a cover frame for each key module. Here, the cover frame can be formed with a rectangular floor plan to frame the support element, the guide device and the switching unit. The cover frame can also be referred to as a key frame. The damper element can be adapted to an opening in the cover frame, which can make assembly and centering of the damper element considerably easier.

The damper element can be arranged between the cover frame and the circuit substrate. Such an embodiment offers the advantage that the impact noise can be reliably minimized by a soft component placed between the circuit substrate and the cover frame.

• 1 eine schematische Darstellung einer Tastatur mit Tastenmodulen gemäß einem Ausführungsbeispiel;
• 2 eine schematische Darstellung eines Tastenmoduls einer Tastatur gemäß einem Ausführungsbeispiel;
• 3 eine partielle Explosionszeichnung eines Tastenmoduls gemäß einem Ausführungsbeispiel;
• 4 eine partielle Explosionszeichnung eines Tastenmoduls einer Tastatur gemäß einem Ausführungsbeispiel;
• 5 eine Teilschnittdarstellung des Tastenmoduls der Tastatur aus 4 in einem montierten Zustand;
• 6 eine partielle Explosionszeichnung eines Tastenmoduls einer Tastatur gemäß einem Ausführungsbeispiel;
• 7 eine Teilschnittdarstellung des Tastenmoduls der Tastatur aus 6 in einem montierten Zustand;
• 8 eine partielle Explosionszeichnung eines Tastenmoduls einer Tastatur gemäß einem Ausführungsbeispiel;
• 9 eine Teilschnittdarstellung des Tastenmoduls der Tastatur aus 8 in einem montierten Zustand;
• 10 eine partielle Explosionszeichnung eines Tastenmoduls einer Tastatur gemäß einem Ausführungsbeispiel;
• 11 eine Teilschnittdarstellung des Tastenmoduls der Tastatur aus 10 in einem montierten Zustand;
• 12 eine partielle Explosionszeichnung eines Tastenmoduls einer Tastatur gemäß einem Ausführungsbeispiel;
• 13 eine Teilschnittdarstellung des Tastenmoduls der Tastatur aus 12 in einem montierten Zustand;
• 14 eine Teilschnittdarstellung eines Tastenmoduls einer Tastatur gemäß einem Ausführungsbeispiel;
• 15 eine weitere Teilschnittdarstellung des Tastenmoduls der Tastatur aus 14;
• 16 eine partielle Explosionszeichnung eines Tastenmoduls einer Tastatur gemäß einem Ausführungsbeispiel;
• 17 eine Teilschnittdarstellung des Tastenmoduls der Tastatur aus 16 in einem montierten Zustand;
• 18 einen Ausschnitt aus 17;
• 19 eine partielle Explosionszeichnung eines Tastenmoduls einer Tastatur gemäß einem Ausführungsbeispiel;
• 20 eine Teilschnittdarstellung des Tastenmoduls der Tastatur aus 19 in einem montierten Zustand; und
• 21 einen Ausschnitt aus 20.

The invention is explained in more detail using the accompanying drawings. Show it:

• 1 a schematic representation of a keyboard with key modules according to an exemplary embodiment;
• 2 a schematic representation of a key module of a keyboard according to an exemplary embodiment;
• 3 a partial exploded view of a key module according to an exemplary embodiment;
• 4 a partial exploded view of a key module of a keyboard according to an exemplary embodiment;
• 5 a partial sectional view of the key module of the keyboard 4 in an assembled state;
• 6 a partial exploded view of a key module of a keyboard according to an exemplary embodiment;
• 7 a partial sectional view of the key module of the keyboard 6 in an assembled state;
• 8th a partial exploded view of a key module of a keyboard according to an exemplary embodiment;
• 9 a partial sectional view of the key module of the keyboard 8th in an assembled state;
• 10 a partial exploded view of a key module of a keyboard according to an exemplary embodiment;
• 11 a partial sectional view of the key module of the keyboard 10 in an assembled state;
• 12 a partial exploded view of a key module of a keyboard according to an exemplary embodiment;
• 13 a partial sectional view of the key module of the keyboard 12 in an assembled state;
• 14 a partial sectional view of a key module of a keyboard according to an exemplary embodiment;
• 15 Another partial sectional view of the key module of the keyboard 14 ;
• 16 a partial exploded view of a key module of a keyboard according to an exemplary embodiment;
• 17 a partial sectional view of the key module of the keyboard 16 in an assembled state;
• 18 a section 17 ;
• 19 a partial exploded view of a key module of a keyboard according to an exemplary embodiment;
• 20 a partial sectional view of the key module of the keyboard 19 in an assembled state; and
• 21 a section 20 .

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

1 shows a schematic representation of a keyboard 100 with key modules 120 according to an exemplary embodiment. The keyboard 100 is, for example, part of a notebook computer, laptop computer or the like. Alternatively, the keyboard 100 is also 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 printed circuit board, circuit board or the like. According to the in 1 In the exemplary embodiment shown, 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, a key cap 125 is attached to each key module 120. 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 the keyboard 100. Alternatively, each key module 120 represents a key on the keyboard 100. In particular, the key modules 120 and the key caps 125 will be discussed in more detail with reference to the following figures.

The keycap 125 represents a part of a key that is visible and touchable to a user of the keyboard 100. 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-path characteristic of a resistance or a restoring force. Furthermore, each key module 120 is designed to establish an electrical connection in response to an actuation with a predefinable actuation path, whereby a switching operation is carried out.

2 shows a schematic representation of a key module 120 of a keyboard 100 according to an exemplary embodiment. The keyboard 100 corresponds to or is similar to the keyboard 1 , where in the representation of 2 only a part of it is shown with, for example, only one key module 120. The key module 120 includes a guide device 230, a switching unit 260, a carrier element 250 and a damper element 290. The switching unit 260 has a mechanical, optical, inductive, magnetoinductive or other operating principle.

The guide device 230 of the key module 120 is shaped to guide a movement of the key module 120 during operation between a rest position and an actuation position. The guide device 230 is coupled to the keycap 125. The guide device 230 is designed, for example, as a double wing mechanism, a scissor mechanism or the like. The switching unit 260 of the key module 120 can be triggered by the guide device 230. The carrier element 250 of the key module 120 is shaped to carry the guide device 230 and the switching unit 260. The carrier element 250 and the switching unit 260 are attached to a circuit substrate 110 of the keyboard 100. The damper element 290 is designed to dampen a stop of the key cap 125 in the actuation position of the key module 120. The damper element 290 is arranged to be in contact with the key cap 125 in the actuating position of the key module 120. According to one embodiment, the damper element 290 is arranged to be in contact with the key cap 125 only or exclusively in the actuation position of the key module 120.

An arrangement of the components of the key module 120 is shown in the illustration 2 to be understood only as an example and schematically and can also vary from exemplary embodiment to exemplary embodiment. The components of the key module 120, in particular the damper element 290, will be discussed in more detail with reference to the following figures.

3 shows a partial exploded view of a key module 120 according to an exemplary embodiment. The key module 120 according to in 3 The exemplary embodiment shown corresponds to or is similar to the key module from one of the figures described above, with the key module 120 in the representation of 3 only the damper element is omitted to illustrate other components of the key module 120. Additionally, in the representation of 3 the keycap 125 is shown.

The key module 120 according to the exemplary embodiment shown here has the guide device 230, a spring element 240, the carrier element 250 and the switching unit 260 with a housing 270, a contact device 280 and an auxiliary actuator 2392. The switching unit 260 points according to in 3 illustrated embodiment, the housing 270, the contact device 280 and the auxiliary actuator 2392. The housing 270 is designed to at least partially accommodate the contact device 280. The contact device 280 is designed to produce an electrical contact when the key module 120 is actuated in order to enable a switching signal or actuation signal and/or to generate an actuation noise. The auxiliary actuator 2392 is designed to actuate the contact device 280.

According to one 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 cap 125 mounted on the key module 120, the key module 120 and the key cap 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.

In 3 Of the key module 120, in particular, the guide device 230 in the form of two wing elements 230 with fastening sections 232, bearing sections 234 and connecting sections 236, the spring element 240, the carrier element 250 with receiving sections 252, the housing 270 with a groove 272, a section 1376, two actuation openings 2371 and a holding section 2375, the contact device 280 with a fixed contact piece 1482, a contactor 1484, a first spring tab 1486, two actuating sections 1488 and a second spring tab 2387 and the auxiliary actuator 2392 are shown.

The key module 120 has as a guide device 230 according to in 3 illustrated embodiment, a first wing element 230 and a second wing element 230 for guiding a movement of the key module 120 when actuated by a user. The two wing elements 230 are mechanically coupled to one another. In the representation of 3 the wing elements 230 are shown in an unactuated state or the rest position of the key module 120. In the unactuated state, the mechanically coupled wing elements 230 create an obtuse angle of rest between them. In an actuated state or the actuated position of the key module 120, the wing elements 230 coupled to one another span an opening angle between them that is greater than the angle of rest. The opening angle can also be 180 degrees. A difference between the repose angle and the opening angle can, for example, be in a range of approximately 12 degrees to 18 degrees.

Each wing element 230 has a web, 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 parallel to one another, for example within a tolerance range. Alternatively, the arms can also extend obliquely with respect to each other. According to the in 3 In the exemplary embodiment shown, the first wing element 230 and the second wing element 230 are shaped identically to one another. In addition, each wing element 230 is formed in one piece. For example, each wing element 230 is also formed from a metal material.

Each of the wing elements 230 points according to the in 3 In the exemplary embodiment shown, for example, two fastening sections 232 for fastening the spring element 240 and two bearing sections 234 for supporting the wing element 230. The fastening sections 232 are formed on the web of the wing element 230. The fastening sections 232 are formed as through openings, in particular as rounded triangular through openings, in the wing element 230. The bearing sections 234 are formed on the arms of the wing element 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 sections 234 are formed as shoulders, steps or noses in outer edges of the arms of the wing element 230.

Each wing element 230 also has at least one connecting section 236 for connecting or coupling the wing element 230 to the keycap 125. According to the in 3 In the exemplary embodiment shown, each wing element 230 has, for example, a connecting section 236. The connecting section 236 is formed on the web of the wing element 230. The connecting section 236 has elastically deformable beam sections. The key cap 125 can be connected or coupled to the wing elements 230 and thus to the key module 120 via a snap connection using the connecting sections 236.

The key module 120 further has at least one spring element 240 for providing a restoring force when the key module 120 is actuated. According to the in 3 In the exemplary embodiment shown, the key module 120 has, for example, a spring element 240. The spring element 240 is attached to one of the fastening sections 232 of the first wing element 230 and to one of the fastening sections 232 of the second wing element 230. Here, the spring element 240 is designed as a tension spring.

The key module 120 also has a support element 250 for supporting the wing elements 230. The carrier element 250 is also designed to support the spring element 240 and optionally the key cap 125 when they are attached to the Wing elements 230 are attached. For example, the carrier element 250 is 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 in 3 In the exemplary embodiment shown, 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 notch-shaped, V-shaped or dovetail-shaped. The bearing sections 234 of the wing elements 230 are stored in the receiving sections 252 when the key module 120 is mounted. The wing elements 230 are thus mounted on the support element 250 so that they can pivot or tilt 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 mechanism. The carrier element 250 is thus designed to carry at least the guide mechanism.

The key module 120 also has the switching unit 260. The switching unit 260 has the housing 270, the contact device 280 and the auxiliary actuator 2392. The contact device 280 can be arranged at least partially in the housing 270. In other words, the housing 270 is shaped to accommodate at least a portion of the contact device 280. The housing 270 is formed, for example, from a plastic material. The auxiliary actuator 2392 is designed to actuate the contact device 280. The auxiliary actuator 2392 is formed, for example, from a plastic material.

In the housing 270 is according to in 3 In the exemplary embodiment shown, for example, only a groove 272 is formed for receiving at least a portion of the spring element 240 in an actuated state of the key module 120. Here, the groove 272 is arranged between the section 1376 and a further section of the housing 270, in which the contact device 280 can be at least partially received. The portion 1376 of the housing 270 is optionally designed to scatter and/or focus light from a light source. According to one exemplary embodiment, the light source can also be at least partially accommodated in the housing 270.

In addition, in the housing 270 according to in 3 In the exemplary embodiment shown, for example, two actuation openings 2371 are formed for exposing the at least one actuation section 1488 of the contact device 280. Furthermore, the housing 270 has at least one holding section 2375 for holding the auxiliary actuator 2392. The at least one holding section 2375 is shaped as a pin according to the exemplary embodiment shown here. The housing 270 is arranged on the carrier element 250.

The contact device 280 is designed to establish electrical contact when the key module 120 is actuated and to generate an actuation noise. The contact device 280 can be pressed or deformed, for example, by the auxiliary actuator 2392 in order to produce the electrical contact and the actuation noise. According to another exemplary embodiment, the contact device 280 can, for example, alternatively be pressed or deformed by the key cap 125 in order to effect the establishment of the electrical contact and the actuation noise.

The contact device 280 has a fixed contact piece 1482 with a first contact and a contactor 1484 with a first spring tab 1486 carrying a second contact and a second spring tab 2387 for generating an actuation noise and at least one actuation section 1488. The contactor 1484 is formed in one piece. The contactor 1484 of the contact device 280 points according to the in 3 illustrated embodiment, in addition to the first spring tab 1486 carrying the second contact, the second spring tab 2387 to generate an actuation noise. Here, the first spring tab 1486 has an actuating section 1488. Furthermore, the second spring tab 2387 also has an actuation section 1488. The contactor 1484 is formed in one piece. In particular, the contactor 1484 is formed as a stamped part or stamped and bent part made of a metal material.

4 shows a partial exploded view of a key module 120 of a keyboard 100 according to an exemplary embodiment. The keyboard 100 corresponds to or is similar to the keyboard 1 , where in the representation of 4 only a part of it is shown with, for example, only one key module 120. The key module 120 corresponds to the key module 3 , where in the representation of 4 the damper element 290 is also shown. The key module 120 includes the guide device 230, the switching unit 260, the carrier element 250 and the damper element 290. The switching unit 260 is designed as a mechanical switching unit merely by way of example. Of the keyboard 100, the circuit substrate 110, the key module 120, the key cap 125 and a cover frame 405 are shown. In the representation of 4 are the guide device 230, the switching unit 260 and the carrier element 250 are shown in an assembled state, with the guide device 230 and the switching unit 260 being attached to the carrier element 250. Furthermore, the carrier element 250 and the switching unit 260 are arranged or attached to the circuit substrate 110 of the keyboard 100, in particular by soldering.

According to the in 4 In the illustrated embodiment, the damper element 290, which is designed to dampen a stop of the key cap 125 in the actuation position of the key module 120 and is arranged to be in contact with the key cap 125 in the actuation position of the key module 120, can be attached to the circuit substrate 110. The damper element 290 is arranged to be in contact with an edge section of the key cap 125 in the actuation position of the key module 120. Here, the damper element 290 has a circumferentially shaped frame with a rectangular floor plan for framing the guide device 230, the carrier element 250 and the switching unit 260 or is shaped as such a frame. The damper element 290 has an elastic mat or plate or is shaped as such. The cover frame 405 is intended for each key module 120 of the keyboard 100. The cover frame 405 has a rectangular floor plan for framing the guide device 230, the support element 250 and the switching unit 260. In an assembled state of the keyboard 100, the damper element 290 is arranged between the cover frame 405 and the circuit substrate 110. The damper element 290 is attached to the circuit substrate 110.

5 shows a partial sectional view of the key module 120 of the keyboard 100 4 in an assembled state. The in 4 Part of the keyboard 100 shown in an assembled state is cut along a cutting line which is in 4 in the drawing runs diagonally from the bottom left to the top right and runs parallel to the side edges of the circuit substrate 110 and approximately centrally through the key module 120. The key module 120 is shown in the rest position. It is clearly shown here that the damper element 290 is arranged between the cover frame 405 and the circuit substrate 110. Furthermore, it is shown that the key cap 125 according to the exemplary embodiment shown here has a plurality of knobs 525. The knobs 525 are arranged to be in contact with the damper element 290 in the actuation position of the key module 120.

6 shows a partial exploded view or partially exploded view of a key module 120 of a keyboard 100 according to an exemplary embodiment. The representation, the keyboard 100 and the key module 120 correspond to the representation, the keyboard and the key module 4 except that the damper element 290 is formed to be in contact with corner portions of the keycap 125 in the actuation point of the first module 120. In other words, the key module 120 corresponds to the key module 4 with the exception that the damper element 290 is widened in its corner regions towards a center of the damper element 290.

7 shows a partial sectional view of the key module 120 of the keyboard 100 6 in an assembled state. The in 6 Part of the keyboard 100 shown in an assembled state is cut along a cutting line which is in 6 in the drawing runs diagonally from the bottom left to the top right and runs parallel to the side edges of the circuit substrate 110 and approximately centrally through the key module 120. According to the exemplary embodiment shown here, the key cap 125 is formed without knobs or they are not shown in the partial sectional view. According to another exemplary embodiment, the keycap 125 has the plurality of knobs.

8th shows a partial exploded view of a key module 120 of a keyboard 100 according to an exemplary embodiment. The representation, the keyboard 100 and the key module 120 correspond to the representation, the keyboard and the key module 4 and or 6 except that the damper element 290 is formed to be in contact with portions of side edges of the keycap 125 in the actuation point of the first module 120. In other words, the key module 120 corresponds to the key module 4 and or 6 with the exception that the damper element 290 is widened in the middle of its sides towards a center of the damper element 290.

9 shows a partial sectional view of the key module 120 of the keyboard 100 8th in an assembled state. The in 8th Part of the keyboard 100 shown in an assembled state is cut along a cutting line which is in 8th in the drawing runs diagonally from the bottom left to the top right and runs parallel to the side edges of the circuit substrate 110 and approximately centrally through the key module 120. Furthermore, it is shown that the key cap 125 according to the exemplary embodiment shown here has a plurality of knobs 525. The knobs 525 are arranged to be in contact with the damper element 290 in the actuation position of the key module 120.

10 shows a partial exploded view of a key module 120 of a keyboard 100 according to an exemplary embodiment. The representation, the keyboard 100 and the key module 120 correspond to the representation, the keyboard and the key module 4 , 6 and or 8th except that the damper element 290 has a continuously formed height profile with a plurality of elevations and a plurality of depressions on one side of contact with the keycap 125.

11 shows a partial sectional view of the key module 120 of the keyboard 100 10 in an assembled state. The in 10 Part of the keyboard 100 shown in an assembled state is cut along a cutting line which is in 10 in the drawing runs diagonally from the bottom left to the top right and runs parallel to side edges of the circuit substrate 110 through the key module 120. According to the exemplary embodiment shown here, the key cap 125 is formed without knobs or they are not shown in the partial sectional view. According to another exemplary embodiment, the keycap 125 has the plurality of knobs.

12 shows a partial exploded view of a key module 120 of a keyboard 100 according to an exemplary embodiment. The representation, the keyboard 100 and the key module 120 correspond to the representation, the keyboard and the key module 4 , 6 , 8th and or 10 except that the damper element 290 is coated with a film 1295 on one side of contact with the keycap 125. According to one embodiment, the film 1295 has a predefined colored, shiny or reflective surface.

13 shows a partial sectional view of the key module 120 of the keyboard 100 12 in an assembled state. The in 12 Part of the keyboard 100 shown in an assembled state is cut along a cutting line which is in 12 in the drawing runs diagonally from the bottom left to the top right and runs parallel to the side edges of the circuit substrate 110 and approximately centrally through the key module 120. According to the exemplary embodiment shown here, the key cap 125 is formed without knobs or they are not shown in the partial sectional view. According to another exemplary embodiment, the keycap 125 has the plurality of knobs.

14 shows a partial sectional view of a key module 120 of a keyboard 100 according to an exemplary embodiment. The keyboard 100 and the key module 120 correspond to the keyboard and the key module 4 , 6 , 8th , 10 and or 12 except that the damper element 290 is attached to the switching unit 260, more precisely to the housing 270 of the switching unit 260, and the cover frame is omitted from the illustration. The key module 120 and the part of the keyboard 100 shown here are shown cut along a section line that extends parallel to the spring element 240.

According to the exemplary embodiment shown here, the damper element 290 is arranged to be in contact with a rear surface 1427 of the key cap 125 in the actuating position of the key module 120. The back surface 1427 is arranged facing away from the user-facing surface of the key cap 125. According to the exemplary embodiment shown here, the damper element 290 is shaped like a dome. The damper element 290 is arranged in a through opening 1474 of the switching unit 260, more precisely in the housing 270 of the switching unit 260. The through opening 1474 is formed in the housing 270 of the switching unit 260. Optionally, the damper element 290 is formed from a transparent material and/or as a diffusing lens.

15 shows another partial sectional view of the key module 120 of the keyboard 100 14 . The part of the keyboard 100 with the key module 120 is only shown from a different perspective, with a hybrid representation of a partial sectional representation and an oblique top view being realized.

16 shows a partial exploded view of a key module 120 of a keyboard 100 according to an exemplary embodiment. The representation, the keyboard 100 and the key module 120 correspond to the representation, the keyboard and the key module 4 , 6 , 8th , 10 and or 12 except that the damper element 290 has at least one pointed projection portion 1692 on a side of contact with the keycap 125, which is in contact with the keycap 125 in the operating position of the key module 120. In the area of the projection section 1692, the damper element 290 thus has a triangular profile. Towards the center of the damper element 290, the damper element 290 has a circumferentially formed ramp with maximum thickness along a circumferential inner edge of the damper element 290 on the side of contact with the key cap 125.

17 shows a partial sectional view of the key module 120 of the keyboard 100 16 in an assembled state. The in 16 shown part of the keyboard 100 in an assembled State cut along a cutting line that extends parallel to the spring element 240. According to the exemplary embodiment shown here, the key cap 125 is formed without knobs or they are not shown in the partial sectional view. According to another exemplary embodiment, the keycap 125 has the plurality of knobs. In 17 is also a section A for the representation of 18 marked.

18 shows a section A 17 . In the representation of 18 Parts of the circuit substrate 110, the cover frame 405 and the damper element 290 including the projection section 1692 are shown.

19 shows a partial exploded view of a key module 120 of a keyboard 100 according to an exemplary embodiment. The representation, the keyboard 100 and the key module 120 correspond to the representation, the keyboard and the key module 4 , 6 , 8th , 10 , 12 and or 16 except that the damper element 290 has at least one curved projection portion 1692 on a side of contact with the keycap 125, which is in contact with the keycap 125 in the operating position of the key module 120. In the area of the projection section 1692, the damper element 290 thus has a round profile. The projection portion 1692 is formed as a circumferential bead toward the center of the damper member 290 on the side of contact with the keycap 125.

20 shows a partial sectional view of the key module 120 of the keyboard 100 19 in an assembled state. The in 19 Part of the keyboard 100 shown in an assembled state is cut along a cutting line which extends parallel to the spring element 240. According to the exemplary embodiment shown here, the key cap 125 is formed without knobs or they are not shown in the partial sectional view. According to another exemplary embodiment, the keycap 125 has the plurality of knobs. In 17 is also a section B for the representation of 21 marked.

21 shows a section B 20 . In the representation of 21 Parts of the circuit substrate 110, the cover frame 405 and the damper element 290 including the projection section 1692 are shown.

If an exemplary embodiment includes an “and/or” link between a first feature and a second feature, this can be read as meaning that, according to one embodiment, the exemplary embodiment has both the first feature and the second feature and, according to a further embodiment, either only the first Feature or only the second feature.

Reference symbols

100

Keyboard

110

Circuit substrate

120

Button module

125

Keycap

230

Management facility

232

Fastening section

234

Storage section

236

connection section

238

End section

240

Spring element

250

Support element

252

Recording section

260

Switching unit

270

Housing

272

Nut

280

Contact facility

290

Damper element

405

Cover frame

525

nubs

1295

foil

1335

web

1337

first arm

1339

second arm

1376

Section

1427

Back surface

1474

Passage opening

1482

Fixed contact piece

1484

Contactor

1486

first spring tab

1488

Operating section

1692

Projection section

2371

Actuation opening

2375

Bracket section

2387

second spring tab

2392

Auxiliary actuator

Claims (22)

Key module (120) for a keyboard (100), the key module (120) having the following features: a guide device (230) which is shaped to guide a movement of the key module (120) when actuated between a rest position and an actuated position, the guide device (230) being able to be coupled to a key cap (125) for the keyboard (100). ; a switching unit (260) which can be triggered by the guide device (230); a carrier element (250) for supporting the guide device (230) and the switching unit (260), the carrier element (250) and the switching unit (260) being attachable to a circuit substrate (110) of the keyboard (100); and a damper element (290) for dampening a stop of the key cap (125) in the actuation position of the key module (120), the damper element (290) being arranged to come into contact with the key cap (125) in the actuation position of the key module (120). be. Button module (120) according to Claim 1 , wherein the damper element (290) is arranged to be in contact with the key cap (125) only in the actuating position of the key module (120). Key module (120) according to one of the preceding claims, wherein the damper element (290) has a circumferentially shaped frame with a rectangular floor plan for framing the support element (250), the guide device (230) and the switching unit (260). Key module (120) according to one of the preceding claims, wherein the damper element (290) comprises an elastic mat or plate. Key module (120) according to one of the preceding claims, wherein the damper element (290) has a continuously formed height profile with a plurality of elevations and a plurality of depressions on one side of contact with the key cap (125). Key module (120) according to one of the preceding claims, wherein the damper element (290) has on one side of contact with the key cap (125) at least one pointed or curved projection portion (1692) which is in contact with the key module (120) in the actuation position the key cap (125). Key module (120) according to one of the preceding claims, wherein the damper element (290) is coated with a film (1295) on one side of contact with the key cap (125), in particular wherein the film (1295) is a predefined colored, shiny or reflective surface. Key module (120) according to one of the preceding claims, wherein the damper element (290) is arranged to be in contact with an edge portion of the key cap (125) in the actuation position of the key module (120). Key module (120) according to one of the preceding claims, wherein the damper element (290) is shaped to be in contact with corner regions of the key cap (125) in the actuation position of the key module (120). Key module (120) according to one of the preceding claims, wherein the damper element (290) is shaped to be in contact with portions of side edges of the key cap (125) in the actuation position of the key module (120). Key module (120) according to one of the preceding claims, wherein the damper element (290) is attachable to the circuit substrate (110). Key module (120) according to one of the preceding claims, wherein the damper element (290) is attached to the switching unit (260). Button module (120) according to Claim 12 , wherein the damper element (290) is arranged to be in contact with a rear surface (1427) of the key cap (125) in the actuating position of the key module (120). Key module (120) according to one of Claims 12 until 13 , wherein the damper element (290) is shaped like a dome. Key module (120) according to one of Claims 12 until 14 , wherein the damper element (290) is arranged in a through opening (1474) of the switching unit (260), wherein the damper element (290) is formed from a transparent material and / or as a diverging lens. Key module (120) according to one of the preceding claims, wherein the guide device (230) has a first wing element (230) and a second wing element (230), each wing element (230) having a web (1335), a first arm (1337) and has a second arm (1339), the arms (1337, 1339) extending away from the web (1335), wherein on the web (1335) a fastening section (232) is formed, a first bearing section (234) for supporting the wing element (230) being formed on the first arm (1337), a second bearing section (234) for supporting the wing element being formed on the second arm (1339). (230), wherein the first wing element (230) and the second wing element (230) can be mechanically coupled to one another, with at least one spring element (240) for providing a restoring force when the key module (120) is actuated on the fastening section (232). of the first wing element (230) and the fastening section (232) of the second wing element (230) can be fastened, a plurality of receiving sections (252) for receiving the bearing sections (234) of the wing elements (230) being formed in the carrier element (250), and with at least one spring element (240) for providing a restoring force when the key module (120) is actuated, the at least one spring element (240) being shaped as a tension spring or as a compression spring. Key module (120) according to one of the preceding claims, wherein the switching unit (260) has a housing (270) and a contact device (280) arranged at least partially in the housing (270) for establishing an electrical contact when the key module (120) is actuated , wherein the contact device (280) has a fixed contact piece (1482) with a first contact and a contact maker (1484) with a first spring tab (1486) carrying a second contact and a second spring tab (2387) for generating an actuation noise and at least one actuation section (1488 ), wherein the contactor (1484) is formed in one piece, and / or wherein in the housing (270) at least one groove (272) for receiving at least a partial section of at least one spring element (240) for providing a restoring force when the key module is actuated ( 120) is formed in an actuated state of the key module (120). 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 arranged on the circuit substrate (110). Keyboard (100) according to Claim 18 , with at least one key cap, which is coupled to the guide device (230) of the at least one key module (120). Keyboard (100) according to Claim 19 , wherein the at least one key cap has a plurality of knobs (525) which are arranged to be in contact with the damper element (290) in the actuation position of the key module (120). Keyboard (100) according to one of the Claims 18 until 20 , with a cover frame (405) for each key module (120), the cover frame (405) being formed with a rectangular floor plan for framing the support element (250), the guide device (230) and the switching unit (260). Keyboard (100) according to Claim 21 , wherein the damper element (290) is arranged between the cover frame (405) and the circuit substrate (110).

Images