Linear motor and linear compressor using the same

Abstract

A linear motor and a linear compressor using the linear motor are provided. Since an inner core is linearly and reciprocally moved together with a target movement body and a magnet insertion recess is formed on an outer circumferential surface thereof, the forward / backward vibration movement of a magnet can be effectively controlled. In addition, since a gap is minimized, self-resistance that interferes with a force exerted by the magnet can be minimized, and accordingly, the size of the magnet necessary for outputting the same force can be minimized.

Description

technical field [0001] The present invention relates to a linear motor and a linear compressor using the linear motor, and more particularly to an inner core installed so as to perform linear motion together with a target moving body, and a magnet inserted into a magnet insertion recess formed on the outer peripheral surface of the inner core. A linear motor in a slot and a linear compressor using the same. Background technique [0002] In general, a linear motor generates linear reciprocating force on a linearly reciprocating object (hereinafter referred to as "target moving body") such as a piston. A linear motor includes: a stator in which a coil is installed; and an actuator (actuator) that interacts with the stator to cause a target moving body to perform linear reciprocating motion. [0003] Recently, linear compressors that compress fluids such as refrigerant gases using linear motors have been developed. [0004] The stator includes: a bobbin; a coil wound inside t...

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Problems solved by technology

[0012] However, there is a problem in the linear motor of the prior art that the self-resistance (self-resistance) which interferes with the magnetic force generated by the magnet is increased due to the gap between the inside and the outside of the magnet, so the output of the linear motor must be increased. , the amount of magnet must be increased

But in this case, a structure to connect the magnet to the inner core is also required, and it is difficult to effectively control the forward / backward swing of the magnet

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