This application claims the benefit of the filing date under 35 U.S.C. ยง 119(a)-(d) of Chinese Patent Application No. 201811155249.4, filed on Sep. 30, 2018.
The present invention relates to a relay and, more particularly, to an electromagnetic relay.
An electromagnetic relay usually comprises a coil, an iron core inserted into the coil, a yoke riveted to the iron core, and an armature connected between the yoke and the iron core. When the coil is energized, an electromagnetic loop is formed among the yoke, the armature, and the iron core, and the armature moves under the action of electromagnetic force, thus realizing the switching action of electromagnetic relay.
The electromagnetic relay, however, includes too many components, which leads to a complex structure and low manufacturing efficiency. Moreover, because of too many components, excessive cumulative errors will result during assembling the electromagnetic relay, which is not conducive to the consistency of the function of the final products.
An electromagnetic relay includes a base, a spool provided on the base, a coil wound on the spool, a yoke inserted into a hole formed in the spool, an armature movably provided on the base, a movable contact fixed on the base, a static contact fixed on the base, and a driving member connected between the armature and the movable contact. The yoke is L-shaped. The yoke and the armature form a rectangular magnetic loop.
The invention will now be described by way of example with reference to the accompanying Figures, of which:
Exemplary embodiments of the present disclosure will be described hereinafter in detail with reference to the attached drawings, wherein like reference numerals refer to like elements. The present disclosure may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will convey the concept of the disclosure to those skilled in the art.
In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawing.
An electromagnetic relay according to an embodiment, as shown in
In the embodiment shown in
When the coil 30 is energized, the armature 50 drives the driving member 60 to move under the action of magnetic force, and the driving member 60 drives the movable contact 71, 71a to move towards the static contact 72, 72a, so that the movable contact 71, 71a electrically contacts the static contact 72, 72a. When the coil 30 is de-energized, the movable contact 71, 71a moves away from the static contact 72, 72a under the action of its elastic restoring force, so that the movable contact 71, 71a and the static contact 72, 72a are electrically separated.
As shown in
As shown in
In the shown embodiment, the base 10 and the spool 20 are formed as a single integral component. For example, in an exemplary embodiment, the base 10 and the spool 20 may be formed as a single injection molding component. The base 10 and the spool 20 need not be manufactured separately, and a step of assembling the spool 20 onto the base 10 is omitted.
As shown in
The electromagnetic relay, as shown in
The elastic pressing member 80, as shown in
The movable contact 71, 71a, as shown in
As shown in
The electromagnetic relay, as shown in
The electromagnetic relay, as shown in
It should be appreciated for those skilled in this art that the above embodiments are intended to be illustrated, and not restrictive. For example, many modifications may be made to the above embodiments by those skilled in this art, and various features described in different embodiments may be freely combined with each other without conflicting in configuration or principle.
Although several exemplary embodiments have been shown and described, it would be appreciated by those skilled in the art that various changes or modifications may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.
Number | Date | Country | Kind |
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201811155249.4 | Sep 2018 | CN | national |
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