Lg Electronics Inc.

Hyung-Pyo Yoon

Si-Hang Jeon

Bon-Cheol Ku

Jin-Yoong Do

Hyeong-Suk Kim

Young-Bae Kim

Kyeong-Bae Park

Seong-Yeol Hyeon

Hyun-Woo Jun

Won-Hyun Jung

Won-hyun Jung

Hyo-Jae Lee

Kyung-Do Kim

Jong-Yoon Choi

Seong-Joon Hong

Chang-Il Jung

Sang-Wook Ahn

Won-Hyuk Jung

Kyeong-Weon Lee

Seok-Jae Jeong

Jin-Yeong Do

Disclosed are injection moldings, an injection-molding apparatus and a method thereof. The injection-molding apparatus comprises: a cavity mold having a cavity; a core mold having a core surface to form a molding space for injection moldings when being joined to the cavity mold; a heating unit for heating the cavity mold or the core mold; a cooling unit for cooling the cavity mold or the core mold; and a patterning stamp having a micrometer or nanometer sized pattern and provided on an inner surface of the molding space. According to the injection-molding apparatus, a micrometer or nanometer sized pattern is formed on a surface of injection moldings so as to have a super-hydrophobic characteristic and an optical characteristic, and a micrometer or nanometer sized pattern of a complex structure can be implemented.

Injection moldings, injection-molding apparatus and method thereof

The reinforcing component for a refrigerator, which is formed by mixing a base material as a synthetic resin material and a supplement component formed by arranging reinforcing fibers according to a pultrusion method, and combined with one or more portions of on one portion of an inner side of an outer case of the refrigerator to contact with foam, a corner of the bottom of the refrigerator or in a mechanic chamber of the refrigerator, an outer plate or an inner plate of a door of the refrigerator, and the interior of a side wall forming an inner space of the refrigerator can reduce the weight of the refrigerator while maintaining the strength.

Reinforcing component for refrigerator

A mover assembly of a reciprocating motor includes: a mover body disposed at a gap between an inner stator and an outer stator; permanent magnets fixed at an outer circumferential surface of the mover body and reciprocally moved together with the mover body in a direction of an induction magnetic field between the inner stator and the outer stator; and a mixed member made of a fiber and a resin to cover and fix the permanent magnets. The permanent magnets are arranged at an outer circumferential face of the mover body, covered with the mixed member obtained by mixing a fiber and a resin, and hardened to be fixed. Therefore, the permanent magnets can be firmly and easily fixed at the mover body. In addition, by molding the mover body with a non-magnetic and non-conductive material, leakage of the magnetic force of the permanent magnets can be prevented.

Mover assembly of reciprocating motor

A discharge valve () of a compressor is disclosed. The discharge valve () contains a spring-loaded valve body (). Valve body () is preferably made of nonferrous metal like aluminum or magnesium and is coated by a covering () of uniform thickness, the covering () being preferably made of plastic material like polyetheretherketone (PEEK) by insertion molding. By that way a wear resistant and light-weight discharge valve is produced.

Discharge valve and valve assembly of reciprocating compressor having the same

A reciprocating motor comprising an outer stator () having a cylindrical shape by radially stacking a plurality of lamination sheets () at the outside of a bobbin () in which a winding coil is wound; an inner stator () disposed in the outer stator () at a certain air gap from an inner circumference of the outer stator, and having a cylindrical shape by radially stacking a plurality of lamination sheets (); a magnet paddle () disposed between the outer stator and the inner stator, and having a plurality of magnets () installed at a circumference thereof; a terminal part () provided at one side of the outer stator, and having a magnetic force balancing part () at which lamination sheets are not stacked, provided at the outer stator at the same interval on the basis of the terminal part in a circumferential direction of the outer stator.

Reciprocating motor

In an abrasion preventive structure of a reciprocating compressor, by forming a coating layer made of Ni&#x2014;P alloy material having high hardness onto the surface of a frame at which front () and rear () resonance springs are contacted or spring mounting grooves () of a spring supporting rod () or spring fixation protrusions or the inner circumference of a cylinder built-in type frame, although each resonance spring () is rotated while repeating compression/relaxation, it is possible to prevent abrasion of the spring mounting grooves () or the spring fixation protrusions, and accordingly reliability of the compressor can be improved.

Abrasion preventive structure of reciprocating compressor

A stator for a reciprocating motor includes a bobbin made of an insulating material in which a winding coil is located; a terminal unit forming a single body with the bobbin and connecting the winding coil electrically with an outer power source; and a core unit stacked radially along with the bobbin started from one side of the terminal unit. Therefore, the winding coil and the bobbin can be coupled in simple way, and the core unit can be stacked simply and precisely, so the mass productivity of the motor is able to be increased. Also, the size of the core unit is able to be managed simply and precisely, and then, the contact and impact with other components constructing the motor is prevented, whereby the reliability of the motor can be improved.

Stator for reciprocating motor

A mover assembly of a reciprocating motor includes: a mover body disposed at a gap between an inner stator and an outer stator; permanent magnets fixed at an outer circumferential surface of the mover body and reciprocally moved together with the mover body in a direction of an induction magnetic field between the inner stator and the outer stator; and a mixed member made of a fiber and a resin to cover and fix the permanent magnets. The permanent magnets are arranged at an outer circumferential face of the mover body, covered with the mixed member obtained by mixing a fiber and a resin, and hardened to be fixed. Therefore, the permanent magnets can be firmly and easily fixed at the mover body. In addition, by molding the mover body with a non magnetic and non-conductive material, leakage of the magnetic force of the permanent magnets can be prevented.

A suction valve coupling structure for a reciprocating compressor is disclosed in which a piston being linearly moved in a cylinder upon receipt of driving force from an electric mechanism unit, according to which gas flows through a gas flow passage formed therein, is coupled by welding to a valve for opening and closing the gas flow passage, thereby strengthening the coupling state of the suction valve. Since the coupling structure is simplified, a dead volume is reduced and a stroke volume is increased, improving compression efficiency. A stroke control of the piston is facilitated to enable a precise control of movement of the piston. In addition, a reliability of the coupling of the suction valve can be improved.

Suction valve coupling structure for reciprocating compressor

A bobbin for a reciprocating motor and fabricating method thereof includes the bobbin comprising a bobbin body () including a first sidewall unit () and a second sidewall unit () forming a certain space in the body by extending at a certain height so as to have slopped part from both side of the bottom () having a ring form with a certain width; a winding coil () wound a plurality of times in the space of inner side of the bobbin body; () and a cover () couple to the bobbin body () so as to cover the winding coil (), and a molding step for fabricating the bobbin, thereby fabrication of the winding coil and laminated outer core constituting the motor is simplified, the length of the permanent magnet constituting the mover can be shortened. So, fabricating cost of the motor can be reduced and mass productivity of the motor can be improved.

Bobbin for reciprocating motor and fabrication method thereof

A stator of a reciprocal motor includes a bobbin of insulating material with a coil wound thereon, a terminal unit formed integrally with the bobbin to connect the coil to an external power source, a first lamination core in which a plurality of lamination sheets of a predetermined form are stacked radially along the bobbin, and a second lamination core in which a plurality of lamination sheets formed to have a certain width and length and located symmetrically on the central line in the direction of the length, are coupled with the inner side or outer side of the first lamination core. Therefore the present invention makes the laminating operation simple and convenient by laminating the plurality of lamination sheets composing the laminate core without sorting the lamination sheets in a certain direction during the production of the lamination core thus to improve assembly productivity and mass productivity.

Growing community of inventors

Changwon, South Korea

Hyung-Pyo Yoon