Structure of rechargeable wireless mouse

#1. Field of the Invention

#The present invention relates to a wireless mouse and, more particularly, to a rechargeable wireless mouse, which is equipped with a rechargeable battery and an electric plug for receiving external AC power to charge the rechargeable battery.

#2. Description of the Related Art

#FIG. 1 illustrates the arrangement of a wireless mouse system with a computer according to the prior art.

#FIG. 2 is a rear elevation of a rechargeable wireless mouse according to the present invention.

#FIG. 3 is a circuit block diagram of the present invention.

#Referring to FIG. 2, a rechargeable wireless mouse is shown comprising a mouse body 1 and a circuit board 2. The mouse body 1 comprises a power input plug 11, a position detector 12, and input means 13. The power input plug 11 is provided at one side of the mouse body 1. According to this embodiment, the power input plug 11 is pivoted to the bottom side of the mouse body 1 and turned in and out of the mouse body 1 between the operative position (see FIG. 7) and the non-operative position (see FIG. 2). The input means 13 is comprised of, for example, a set of buttons 131 and/or a wheel(not shown). The position induction sensor 12 is of mechanical driven design. The circuit board 2 is mounted inside the mouse body 1, and electrically connected to the power input plug 11, the position detector 12, and the input means 13.

#Referring to FIG. 3, the circuit board 2 comprises a power converter circuit 21 and a control circuit 22. The power converter circuit 21 is electrically coupled to the power input plug 11 of the mouse body 1, and adapted to convert city AC power into DC power for the control circuit 22. The control circuit 22 is adapted to control the operation of the wireless mouse and to transmit signal to the receiver unit of the computer, comprised of a power supply circuit 221, a micoprocessor 222, a wireless transmission circuit 223, a position induction circuit 224 and an operation circuit 225.

#The power converter circuit 21 of the circuit board 20 may be variously embodied. FIG. 4 shows an example of the power converter circuit 21. According to this embodiment, the power converter circuit 21 is comprised of a transformer 211, a rectifier filter circuit 212, a voltage stabilizer circuit 213, and a rechargeable battery 214. The power input end of the transformer 211 is connected to the aforesaid power input plug 11 to receive external AC power. The rectifier filter circuit 212 is comprised of diodes D1 and D2 and a capacitor C1, and connected to the power output end of the transformer 211 to rectify inputted AC power into a ripple voltage. The voltage stabilizer circuit 213 is comprised of a diode D3, resistors R1˜R4, and transistors Q1˜Q2, and connected to the output end of the rectifier filter circuit 212 to convert the ripple voltage received from the rectifier filter circuit 212 into a stable DC voltage. The rechargeable battery 214 is connected to the output end of the voltage stabilizer circuit 213 and charged by the stabilized DC voltage from the voltage stabilizer circuit 213.