Electromagnetic relay
AssigneeLsis Co., Ltd.
InventorYeon Soon Choi
Life of this patent
Estimating the term…
Abstract
An electromagnetic relay includes a housing, a fixed contact provided within the housing, a movable contact movable to contact or be separated from the fixed contact, and a driving unit configured to drive the movable contact to be in contact with or separated from the fixed contact, and including a coil, a yoke disposed within the coil and having an inner section for forming a magnetic path inside and outside of the coil, a movable core disposed within the coil to be attractable by the inner section, and a shaft having one end connected to the movable core and another end connected to the movable contact, capable of facilitating an assembling process of a shaft and a movable core by eliminating a welding process.
Claims17
An electromagnetic relay, comprising:
- a housing;
- a fixed contact provided within the housing;
- a movable contact configured to be movable between contacting the fixed contact and separated from the fixed contact;
- and
- a driving unit configured to drive the movable contact between contacting the fixed contact or separated from the fixed contact,
- wherein the driving unit comprises:
- a coil;
- a yoke disposed within the coil and comprising an inner section for forming a magnetic path inside and outside of the coil;
- a movable core disposed within the coil to be attractable by the inner section;
- a shaft comprising:
- a shaft body;
- and
- one end connected to the movable core and another end connected to the movable contact, wherein a coupling portion is provided at the one end and coupled with the movable core;
- and
- a fixing member configured to be coupled to an end of the coupling portion which is exposed outside of the movable core, wherein the fixing member is configured to restrict separation of the coupling portion from the movable core,
- wherein:
- a hook is provided at the end of the coupling portion,
- a hook locking jaw is provided at the fixing member and configured to be engaged with the hook in an axial direction, and
- the coupling portion comprises:
- a first diameter section extending from an end of the shaft body;
- a second diameter section formed adjacent to the first diameter section and having a smaller diameter than the first diameter section;
- and
- a hook locking jaw accommodating portion adjacent to the second diameter section and configured to accommodate the hook locking jaw.
An electromagnetic relay, comprising:
- a housing;
- a fixed contact provided within the housing;
- a movable contact configured to be movable between contacting the fixed contact and separated from the fixed contact;
- and
- a driving unit configured to drive the movable contact between contacting the fixed contact or separated from the fixed contact,
- wherein the driving unit comprises:
- a coil;
- a yoke disposed within the coil and comprising an inner section for forming a magnetic path inside and outside of the coil;
- a movable core disposed within the coil to be attractable by the inner section;
- a shaft comprising:
- a shaft body;
- and
- one end connected to the movable core and another end connected to the movable contact, wherein a coupling portion is provided at the one end and coupled with the movable core;
- and
- a fixing member configured to be coupled to an end of the coupling portion which is exposed outside of the movable core, wherein the fixing member is configured to restrict separation of the coupling portion from the movable core,
- wherein:
- a hook is provided at the end of the coupling portion,
- a hook locking jaw is provided at the fixing member and configured to be engaged with the hook in an axial direction, and
- the coupling portion comprises:
- a first diameter section extending from an end of the shaft body;
- and
- a second diameter section formed adjacent to the first diameter section and having a smaller diameter than the first diameter section;
- wherein the shaft and the movable core comprise corresponding engaging portions to restrict an exposed range of the hook, and
- wherein the engaging portion of the shaft comprises a hooking portion and the engaging portion of the moveable core comprises a hooking jaw, and the corresponding engaging portions are configured to be engaged in an axial direction.
Dependencies are inferred from the claim text.