Claims
- 1. An electromagnetic relay, comprising:
- a electromagnet consisting of an iron core and a solenoid wound thereon;
- a yoke extending in parallel with said electromagnet and attached to one end of said iron core;
- an armature pivotally attached to a part of said yoke adjacent to another end of said iron core at its base end;
- a fixed contact unit provided adjacent to said electromagnet;
- a movable contact carrier pivotally supported on each end by an axial projection along a pivot axis substantially parallel to said iron core, said movable contact carrier having at least one movable contact member substantially parallel to said pivot axis;
- wherein at least one pair of fixed contact members is provided in said fixed contact unit and aligned along an axis parallel to said pivot axis;
- an extension arm extending from said armature and having a free end adapted to abut an actuation point of said movable contact carrier located between said pivot axis and said movable contact member carried thereby;
- said movable contact member being adapted to come into contact with and move apart from said pair of fixed contact members provided in said fixed contact unit by pivotally moving said movable contact carrier.
- 2. An electromagnetic relay according to claim 1, wherein said extension arm extends from a side end of said armature.
- 3. An electromagnetic relay according to claim 1, wherein said moveable contact carrier is pivotally supported by a shield case for said fixed contact member and said moveable contact member.
- 4. An electromagnetic relay according to claim 3, wherein said moveable contact carrier is provided with a return spring assembly comprising a spring retainer adapted to be fitted upon an end portion of said moveable contact carrier adjacent to its pivotal center line, and a leaf spring piece extending therefrom and abutting a part of said shield case.
- 5. An electromagnetic relay according to claim 1, wherein said yoke is provided with a pair of cavities adjacent to longitudinal end portions of said solenoid.
- 6. An electromagnetic relay according to claim 3, wherein said shield case consists of a outer casing having a surrounding wall, and a plurality of ground terminal pieces which are joined at their base ends by vertical wall portions, said ground terminal pieces being passed through openings provided in the bottom wall of said shield case.
- 7. An electromagnetic relay, comprising:
- a electromagnet consisting of an iron core and a solenoid wound thereon;
- a yoke extending in parallel with said electromagnet and attached to one end of said iron core;
- an armature pivotally attached to a part of said yoke adjacent to another end of said iron core at its base end;
- a fixed contact unit provided adjacent to said electromagnet;
- an pivotally supported movable contact carrier; and
- an extension arm having a horizontal part extending from a side end of said armature in parallel with said electromagnet, and a vertical portion extending laterally from a free end of said horizontal portion toward said electromagnet,
- said vertical portion having a free end adapted to abut an actuation point of said movable contact carrier located between its pivoted point and movable contact piece carried thereby and provided on a side of said yoke opposite to said iron core, said yoke being provided with a notch extending from a side end thereof so as to accommodate said vertical portion of said extension arm therein without interfering therewith; and
- said movable contact member being adapted to cooperate with a fixed contact member in said fixed contact unit.
- 8. An electromagnetic relay according to claim 7, wherein said yoke is provided with a cut away portion which is narrower than the other part of the yoke adjacent thereto so as to accommodate said horizontal part therein without interfering therewith.
- 9. An electromagnetic relay, comprising:
- a electromagnet consisting of an iron core and a solenoid wound thereon;
- a yoke extending in parallel with said electromagnet and attached to one end of said iron core;
- an armature pivotally attached to a part of said yoke adjacent to another end of said iron core at its base end;
- a fixed contact unit provided adjacent to said electromagnet, said fixed contact unit having a fixed contact member;
- a movable contact carrier having a movable contact member, said movable contact carrier being pivotally supported by a shield case for said movable contact member and said fixed contact member;
- an extension arm extending from said armature and having a free end adapted to abut an actuation point of said movable contact carrier located between its pivoted point and said movable contact member carried thereby;
- a return spring assembly for said contact carrier having a spring retainer adapted to be fitted upon an end portion of said movable contact carrier adjacent to its pivotal center line and having a projection adapted to be engaged by said actuating end of said extension arm, and a leaf spring piece extending therefrom and abutting a part of said shield case;
- said movable contact member being adapted to cooperate with said fixed contact member provided in said fixed contact unit.
- 10. An electromagnetic relay according to claim 9, wherein a hemispherical contact is formed in a side wall of said shield case, and said movable contact piece is provided with a bifurcated end to which is adapted to contact said hemispherical contact at two points.
- 11. An electromagnetic relay according to claim 10 wherein said shield case is provided with a tang which is adapted to be fitted into a corresponding hole provided in said yoke, and a terminal piece which is adapted to be passed through a base and fixedly secured thereto.
- 12. An electromagnetic relay according to claim 11, wherein said solenoid is provided with a pair of coil wire end terminals which are adapted to be passed through said base and fixedly secured thereto, and are provided with engagement portions for holding said electromagnet upon said base.
- 13. An electromagnetic relay, comprising:
- a electromagnet consisting of an iron core and a solenoid wound thereon;
- a yoke extending in parallel with said electromagnet and attached to one end of said iron core;
- an armature pivotally attached to a part of said yoke adjacent to another end of said iron core at its base end;
- a fixed contact unit provided adjacent to said electromagnet, said fixed contact unit having a fixed contact member;
- a movable contact carrier having a movable contact member, said movable contact carrier being pivotally supported by a shield case for said movable contact member and said fixed contact member, said shield case comprising a pair of upright pieces having pivot holes therein for receiving projection provided in lateral ends of said movable contact carrier in a pivotal manner, and said movable contact carrier in additionally provided with guide projections for pushing apart said upright pieces while said upright pieces are provided with openings adjacent to said pivot holes for receiving said guide projections without interfering pivotal movement of said movable contact carrier;
- an extension arm extending from said armature and having a free end adapted to abut an actuation point of said movable contact carrier located between its pivoted point and said movable contact member carried thereby;
- said movable contact member being adapted to cooperate with said fixed contact member provided in said fixed contact unit.
- 14. An electromagnetic relay, comprising:
- a electromagnet consisting of an iron core and a solenoid wound thereon;
- a yoke extending in parallel with said electromagnet and attached to one end of said iron core;
- an armature pivotally attached to a part of said yoke adjacent to another end of said iron core at its base end;
- a fixed contact unit provided adjacent to said electromagnet, said fixed contact unit having a fixed contact member;
- a movable contact carrier having a movable contact member, said movable contact carrier being pivotally supported by a shield case for said movable contact member and said fixed contact member;
- an extension arm extending from said armature and having a free end adapted to abut an actuation point of said movable contact carrier located between its pivoted point and said movable contact member carried thereby;
- a return spring assembly for said contact carrier having a C-shaped spring retainer adapted to be fitted upon an end portion of a planar part of said movable contact carrier adjacent to its pivotal center line, said C-shaped spring retainer being provided with a roof-top shaped top wall, and an opening defined between two side walls of said spring retainer being narrower than the thickness of a corresponding end portion of said planar part of said movable contact carrier on which said spring retainer is to be fitted, and said spring assembly also having a leaf spring piece extending therefrom and abutting a part of said shield case;
- said movable contact member being adapted to cooperate with said fixed contact member provided in said fixed contact unit.
Priority Claims (3)
Number |
Date |
Country |
Kind |
63-86156 |
Apr 1988 |
JPX |
|
63-86628 |
Apr 1988 |
JPX |
|
63-63138[U] |
May 1988 |
JPX |
|
Parent Case Info
This application is a continuation of U.S. application Ser. No. 07/334,631, filed Apr. 7, 1989, now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4020434 |
Jaegle et al. |
Apr 1977 |
|
4309682 |
Arnoux et al. |
Jan 1982 |
|
Continuations (1)
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Number |
Date |
Country |
Parent |
334631 |
Apr 1989 |
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