Abstract: A multifunctional microcomputer controlled turn-over nursing bed comprises a bed board that may fold into a L-shape or a U-shape, middle longitudinal plates and left and right side plates wherein the left side plate or the right side plate each comprises a side pillow plate, an adjustable hand rest plate and a hip leaning plate, a movable frame, and a system of interchangeable toilet cover and toilet seat connected by the movable frame which allows excrement collection from a patient lying on the bed even when the bed is folded. The side pillow plate, the hand rest plate and the hip leaning plate may fold synchronously by a link shaft. The bed further comprises a head plate and a foot plate wherein each comprising a centre fixed plate and two active plates, which can be narrowed when two active plates are inserted into a centre fixed plate.

Abstract: Disclosed is a silicon condenser microphone including a backplate having a plurality of perforations therethrough, a diaphragm opposed from the backplate for forming a capacitor. The diaphragm includes a first part and a second part received in the first part, the second part being capable of vibrating relative to the backplate. The first part is connected to the ground and the second part is connected to a bias voltage.

Abstract: Disclosed is an apparatus used in an electronic device for providing haptic feedback. The apparatus includes a base defining a receiving space, a piezoelectricity vibrator suspended in the receiving space and being capable of vibrating in the receiving space, a pair of contacts partially accommodated in the base and electrically connected to the piezoelectricity vibrator, and a transmitting mass located above the piezoelectricity vibrator with a lower side abutting against the piezoelectricity vibrator.

Abstract: A speaker includes a magnetic circuit defining a magnetic gap, a diaphragm defining a central part and peripheral part surrounded the central part of the diaphragm, a coil defining an end suspended in the magnetic gap, an elastic plate defining a central flat coupled to the central part of the diaphragm and a side coupled to another end of the coil. And the side of the elastic plate comprises a first part extending perpendicularly from the central flat toward the peripheral part of the diaphragm and a second part extending parallel to the central flat for coupling another end of the coil.

Abstract: An lens driving device is disclosed. The lens driving device includes a base, a lens holder mounted on the base, a movable cover opposite to the a lens holder, a elastic supporting portion received into the lens holder and engaged with the movable cover, a coil and a permanent magnet respectively attached on the lens holder. The permanent magnet interacts with the coil for generating a magnetic force for driving the lens holder to move toward the base along a central axis of the lens holder. The elastic supporting portion defines an elastic force which is more than a weight of the movable cover but not more than the resultant of the weight of the movable cover and the magnetic force. While assembled, the lens driving device further defines a movable distance between an upper surface of the supporting elements and a first surface of the movable cover.

Abstract: A method of soldering terminals of a micro-speaker on a circuit board comprises the following steps. Firstly, providing a circuit board having a pair of through holes passing therethrough, and two soldering sections defined surrounding the pair of through holes. Secondly, the soldering sections are plated with soldering tin. Thirdly, providing a pair of columned terminals, the terminal includes an upper portion, a low portion and a body connecting between the upper portion and the low portion. Fourthly, the low portion of the terminal is inserted into the corresponding through hole and the body is resisted on the soldering section. Fifthly, the soldering tin is heated to solder the body on the soldering tin. Finally, the upper portion of the terminal is soldered onto the corresponding end of the voice coil. As a result, soldering defective can be reduced.

Abstract: A linear vibrator is disclosed. The linear vibrator includes a housing having a base and a cover, a number of elastic members connected to the housing, a moving unit suspended inside the housing by the elastic members, a PCB covered by the housing and a coil mounted on the PCB. The base has a bottom wall, a plurality of sidewalls extending vertically from the bottom wall and a blocking ring extending form a central portion of the bottom wall. The moving unit has a magnet assembly and at least a pair of patches and vibrates along a direction parallel to the bottom wall, the coil is located right below the magnet assembly.

Abstract: A diaphragm is disclosed. The diaphragm includes a dome part, an edge part connected to an outer peripheral part of the dome part. The dome part includes a main body defining a first surface and a second surface opposite to the first surface, a first dome part connected to the first surface, and a second dome part connected to the second surface.

Abstract: A window covering driving device includes a motor and a control circuit, the control circuit is provided with a microprocessor, a control wire, a control signal input terminal, and a switching circuit and the motor is connected to a drive power supply via the switching circuit. The switching circuit is connected to the microprocessor and the control signal input terminal is connected to the microprocessor via the control wire. A safety position limiting wire is also included with one end of the safety position limiting wire being connected to the microprocessor and the other end is connected to a safety position limiting signal control terminal. The safety position limiting wire and safety position limiting signal control terminal are attached so that, when the safety position limiting signal control terminal is at the position limiting state, as the motor runs to the position limiting position, it will automatically stop.