A key structure includes a supporting plate, a triggering switch, a keycap and a soft element. The triggering switch is located over the supporting plate. The keycap is located over the triggering switch. When an external force is received by the keycap, the triggering switch is pushed by the keycap. The soft element is disposed on an inner surface of the keycap. When the soft element is contacted with the triggering switch, the soft element is subjected to deformation. When the soft element is contacted with the triggering switch, a portion of the triggering switch is inserted into the deformed soft element to limit a sliding action of the triggering switch. Consequently, the mechanical key switch provides enhanced tactile feel.

The invention provides a keypad module, including a bottom plate, a circuit film, an elastic element, a scissor structure, a keycap and a buffering material layer. The circuit film is disposed on the bottom plate and includes a switch. The elastic element is disposed on the switch. The scissor structure is fixed on the bottom plate. The keycap is disposed on the scissor structure. The buffering material layer is disposed on the inner surface of the keycap.

A key structure includes a supporting plate, a triggering switch, a keycap and a soft element. The triggering switch is located over the supporting plate. The keycap is located over the triggering switch. When an external force is received by the keycap, the triggering switch is pushed by the keycap. The soft element is disposed on an inner surface of the keycap. When the soft element is contacted with the triggering switch, the soft element is subjected to deformation. When the soft element is contacted with the triggering switch, a portion of the triggering switch is inserted into the deformed soft element to limit a sliding action of the triggering switch. Consequently, the mechanical key switch provides enhanced tactile feel.

A key structure includes a switch circuit board, a triggering assembly, a keycap and an elastic element. The triggering assembly is disposed over the switch circuit board. The elastic element is arranged between the keycap and the triggering assembly. As the keycap is moved, the triggering assembly is pushed by the elastic element. The elastic element includes a concave part. The concave part is located at a top end of the elastic element and contacted with the keycap. When the elastic element is pushed by the keycap, the concave part is subjected to deformation, so that a movable distance of the keycap toward the switch circuit board is increased. By using the key structure, the tactile feel of depressing the keycap is enhanced.

A luminous keyboard includes plural keys, a membrane switch circuit member, a supporting plate and a backlight module. The membrane switch circuit member is located under the plural keys, and includes an upper wiring plate, a lower wiring plate and a separation plate. The supporting plate is located under the membrane switch circuit member and connected with the plural keys. The backlight module is located under the supporting plate to generate a light beam. A periphery region of at least one of the upper wiring plate, the lower wiring plate and the separation plate is bent to cover the supporting plate and the backlight module. Consequently, the light beam is not leaked out through the periphery region of the backlight module.

Particular embodiments described herein provide a keycap that includes a plurality of front plane elements, where each front plane element includes a top electrode, a conductive region under each of the plurality of front plane elements, where each conductive region includes a bottom electrode and a top electrode coupling area, where each top electrode coupling area is electrically coupled to a common top electrode node, an electrical path between each top electrode and each corresponding top electrode coupling area such that each top electrode is connected to the common top electrode node, and a dielectric between each top electrode and each bottom electrode.

A sealing device for a human-machine dialogue element intended to be fixed through a wall, the device including a seal formed in a ring around an axis, the seal including a first annular edge and a second annular edge. The second edge follows a path including a plurality of chicanes so as to form at least one concave part delimiting a bearing zone on one face of the seal and at least one convex part delimiting a disengagement zone on the face of the seal to circumvent a positioning element of the seal.

A sealing device for a human-machine dialogue element intended to be fixed through a wall, the device including a seal formed in a ring around an axis, the seal including a first annular edge and a second annular edge. The second edge follows a path including a plurality of chicanes so as to form at least one concave part delimiting a bearing zone on one face of the seal and at least one convex part delimiting a disengagement zone on the face of the seal to circumvent a positioning element of the seal.

A key structure includes a membrane switch circuit member, a rubbery elastomer, a housing, a triggering element, a metallic elastic element and a keycap. The keycap is disposed on the triggering element. The rubbery elastomer is disposed on the membrane switch circuit member. The housing is located over the rubbery elastomer. The triggering element is movable relative to the housing. The metallic elastic element is contacted with the triggering element. While the keycap is depressed, the triggering element is moved relative to the housing to press the metallic elastic element. While the metallic elastic element is pushed by the triggering element, the metallic elastic element is swung to collide with the triggering element. Consequently, a click sound is generated.

Shown are a switch and a manufacturing method thereof. The switch has a base substrate; and an electrode disposed on a first surface or a second surface of the base substrate. The flexible electrode includes: a substrate in a range of about 5 to 70 vol %; conductive particles embedded in the substrate in a range of about 29.9 to 94.9 vol %; and a degradation inhibitor in a range of 0.1 to 1 vol %, based on a total of 100 vol % of the electrode. In particular, the substrate of the electrode is flexible and thus the electrode is flexible.