Abstract: A portable electronic device includes a cover (10), a container (20) and a heater (40). The container is provided on the cover. The heater includes some exothermic materials. The heater is received in the container.

Abstract: A contact spring assembly (30) for an electronic device includes a mounting portion (31), a press spring (32), and a deformable spring (37). The press spring and the deformable spring are respectively bent from the mounting portion. The press spring resists the deformable spring. The press spring is configured to be moved along a first direction and push the deformable spring to move along a second direction different from the first direction.

Abstract: A dome contact (32) for pushbutton switches (300) includes a diaphragm (33) having a reversible dome portion (331), and a bump (34) projecting from a central portion of a convex surface of the dome portion. A method for fabricating the dome contact includes steps of: providing a diaphragm formed by injection molding or screen printing; and forming a bump on a central portion of a convex surface of the diaphragm via thermal extrusion laminating technology of rapid prototyping technology.

Abstract: An elastic sheet structure including a fixing section, a body section perpendicularly connected to the fixing section, an elastic section, and two support sections is provided. The elastic section perpendicularly connects to the body section so that a portion of the elastic section is substantially parallel to the fixing section. Two support sections perpendicularly connect to two opposite sides of the body section. The support sections are supported by the fixing section, and are higher than the body section concurrently with respect to the fixing section. The elastic section is located between and movable with respect to the two support sections, and a top of the elastic section is higher than a top of each support section concurrently with respect to the fixing section. Further, an array type elastic sheet device using the elastic sheet structure is also provided.

Abstract: A grounding mechanism (20) is electronically connected to a main circuit board (52), a subsidiary circuit board (53) and a key conductive member (55). The grounding mechanism includes an elastic member (30). The elastic member includes a mounting portion (31), a conductive portion (32) and a resisting portion (35). The mounting portion is electronically fixed to the main circuit board. The conductive portion extends from one side of the mounting portion for electronically connecting to the key conductive member. The resisting portion extends from another side of the mounting portion for resisting the subsidiary circuit board.

Abstract: A contact spring assembly (30) for an electronic device includes a mounting portion (31), a press spring (32), and a deformable spring (37). The press spring and the deformable spring are respectively bent from the mounting portion. The press spring resists the deformable spring. The press spring is configured to be moved along a first direction and push the deformable spring to move along a second direction different from the first direction.

Abstract: A grounding apparatus (200) for a portable electronic device (100) includes a conductive member (20), at least one connecting member (30) and a grounded sliding mechanism (40). The connecting member is electronically connected to the conductive member. The sliding mechanism is electrically connected to the conductive member via the connecting member.

Abstract: An apparatus (40) for fixing a flexible printed circuit board module (20) to a sliding mechanism (10) of a portable electronic device is provided. The apparatus includes a base (41) and a pressing device (43). The base includes an assembling stage (414) and defines a mounting space (419) therein. The assembling stage is configured for positioning the sliding mechanism and the flexible printed circuit board module thereto. The pressing device is mounted in the mounting space and configured for sliding within the mounting space and pressing the flexible printed circuit board module toward the sliding mechanism.

Abstract: A grounding apparatus (200) includes at least one conductive member (20), a sliding mechanism (30) and a flexible printed circuit board (40). The sliding mechanism is conductive and electrically connected to the conductive member. The flexible printed circuit board includes a conductive layer (421) and a grounding end (4231), the conductive layer and the grounding end are electrically connected to the sliding mechanism.

Abstract: A heating apparatus (20) comprises a box (22), a door (23) and sliding mechanism (21). The door is slidably mounted on the box. The sliding mechanism includes a static member (25), a sliding member (24) and at least a resilient member (26). The sliding member is slidably mounted on the static member. The static member is mounted on the box, and the sliding member is mounted on the door. One end of the resilient member is fixed to the sliding member, and another end of the resilient member is fixed to the static member. When the door is sliding on the box, the resilient member drives the door.

Abstract: A portable electronic device (30) includes a first body (32), a second body (34), and a writing board (3222). The first body has a surface (322). The second body is movably mounted to the first body and covers the surface of the first body. The writing board is formed on the surface of the first body.

Abstract: A sliding cover mechanism (100) includes a static member (10), a sliding member (20) and a flexible circuit board (60). The static member includes a receiving portion (101). The sliding member is movably mounted on the static member. One end of the flexible circuit board is mounted on the static member and another end of the flexible circuit board is mounted on the sliding member. The flexible circuit board is transformed and partly received in the receiving portion when the sliding member is moved on the static member.

Abstract: A portable electronic device includes a cover (10), a container (20) and a heater (40). The container is provided on the cover. The heater includes some exothermic materials. The heater is received in the container.

Abstract: A musical instrument stand includes a base unit, a support frame, an adjusting seat, an upright support tube, and a pedal unit. The base unit includes a bottom plate and an upright support rod. The support frame includes a first clamping member, two support legs, a second clamping member and two adjusting levers. Thus, the first clamping member and the second clamping member are rotatable about the support rod so that the support frame is rotatable about the support rod freely so as to adjust the horizontal position and angle of the support frame. In addition, the adjusting seat is movable on the support rod to move the support tube and the pedal of the pedal unit so as to adjust the height of the pedal independently.

Abstract: A control system having a compound function is disclosed. The control system is used for switching on an electronic apparatus and simultaneously makes the electronic apparatus implement an action required from an instruction signal. The control system uses a transmission body to transmit a compound signal to a receiving unit. The receiving unit transmits a switching signal and the instruction signal to a power control unit and a storage unit respectively after the receiving unit receives the compound signal. The electronic apparatus can be switched by the power control unit. The instruction signal which is temporarily stored in the stored unit is then transmitted to the electronic apparatus that makes the electronic apparatus to implement an action required from the instruction signal.