This invention relates to a mini compressor and in particular to one which includes
a motor having a driving axle connected with a driving gear, a fixed seat on which is fixedly mounted the motor, a transmission gear having an enlarged threaded portion and meshed with the driving gear of the motor, a cylinder mounted on the fixed seat, an eccentric member provided with a shaft extending through the transmission gear to engage with the fixed seat so that one side of the eccentric member is spaced apart from the enlarged threaded portion of the transmission gear and the transmission gear must rotate through a certain distance before that side contacts and pushes the eccentric member to rotate, and a spring mounted between the transmission gear and the eccentric member for pushing the eccentric gear to contact another side of the enlarged threaded portion of the transmission gear.
It has been found that the prior artmini compressor on the market utilizes a motor to drive a piston to compress air. However, when the compressor is turned on, the motor will immediately drive the piston to reciprocate in a cylinder thereby producing a relatively large transient current through the motor and therefore shortening its working life.
It is the primary object of the present invention to provide a mini-type air compressor which may reduce the transient current through the motor when started.
It is another object of the present invention to provide a mini air compressor which may prevent the motor from being burnt down by the transient current.
It is still another object of the present invention to provide a mini-type air compressor which is durable in use.
It is still another object of the present invention to provide a mini-typed air compressor which is simple in construction.
It is a further object of the present invention to provide a min compressor which is easy to manufacture.