1. Field of the Invention
The present invention relates to a charger, and particularly to a charger performing electromagnetic induction to produce inductive current for charging portable electronic products, such as portable computer, Personal Digital Assistant (PDA), digital camera, electric torch, walkman and etc.
2. Related Art
Portable electronic products are developed with more functions, especially some of which need more rapid transmission speed and larger memory for Internet, and correspondingly requiring more power. This requirement becomes more outstanding with development of wide-band communication. Therefore, it is desired to supply power of portable electronic products timely for meeting consumers' need.
Replacing battery and charging are two ways to supply power of portable electronic products. Replacing battery is easy, but abandoned battery pollutes the environment. Moreover, it is not economic to replace battery frequently.
Although charging can overcome the deficiencies of replacing battery, it is always limited within a special place. cm
Accordingly, an object of the present invention is to provide a charger which economically and continuously supplies electronic products with power, and which does not pollute environment.
Another object of the present invention is to provide a charger which charges quickly without outside batteries.
The charger performs electromagnetic induction of accelerated varying magnetic field to produce mass inductive current for power. The charger comprises a slider, a coil set assembled on the slider, and a magnet set spaced a predetermined distance from the slider. Magnetic field varies quickly between coils of the coil set and magnets of the magnet set when the slider slides, thereby producing mass inductive current.
The slider includes a fixing plate, a metal base and rolling elements. The metal base is surrounded by the coil set and connects with the fixing plate. The rolling elements are located at corners of the fixing plate for facilitating the slider to slide.
The charger has buffers on opposite sides of a moving path of the slider for urging the slider to reset after displacement.
With reference to
The slider 3 comprises a fixing plate 30, a metal base 31 and a rolling element 32. The metal base 31 is formed of steel. The fixing plate 30 defines a plurality of positioning slots 301 for assembling on the metal base 31. A plurality of shafts 310 is formed on the metal base 31, and each shaft 310 forms posts 311 at a top thereof for corresponding to the positioning slots 301. A metal sheet 33 cooperates with the metal base 31 and is sandwiched between the fixing plate 30 and the magnet set 5. The metal sheet 33 forms a plurality of partitions 330 for being sandwiched between the shafts 310. A plurality of holes 331 is defined in the metal sheet 33 for corresponding to the posts 311. In assembly, the posts 311 of the metal base 31 insert through the holes 331 and are then folded for retaining the metal sheet 33 onto the metal base 31.
The coil set 4 has a plurality of coils surrounding shafts 310 of the metal base 31. The magnet set 5 has a plurality of magnets and glues to a bottom of the casing 2 along the line of North to South. The magnet set 5 is spaced a predetermined distance t from the slider 3 (As shown in
As shown in
Referring to
Referring to
It is understood that the invention may be embodied in other forms without departing from the spirit thereof. Thus, the present examples and embodiments are to be considered in all respects as illustrative and not restrictive, and the invention is not to be limited to the details given herein.