The present disclosure relates to the technical field of relays. More particularly, the present disclosure relates to an electromagnetic relay with novel structural characteristics that improve the stability of application.
Relay, also known as electrical relay, is an electronic control component, and it can be divided according to its working principle into photorelay, electromagnetic relay, thermal relay, etc.
The electromagnetic relay is generally equipped with an electromagnetic coil, a movable contact and a fixed contact, and the fixed contact is externally connected to a control circuit. After the electromagnetic coil is electrically conducted, the movable contact will be shifted by the electromagnetic effect of the electromagnetic coil to control electrical connection or disconnection. As the application requirement of the electromagnetic relay varies, the design of the relay tends to be more complicated, and it is a challenge for related manufacturers to maintain the stability of electrical conduction of the complicated electronic components during the operation of the relay.
Therefore, it is a primary objective of the present disclosure to provide an electromagnetic relay that allows a plurality of switch conductive plate assemblies to have synchronous contact or disconnection, as well as providing sufficient and appropriate forces to the contacts of the switch conductive plate assemblies to achieve the effects of stabilizing the conducted status, ensuring a reliable separation of the disconnection to reduce excessive resistance during operation, and preventing the high temperature caused by incomplete contact of the contacts.
To achieve the foregoing and other objectives, the present disclosure discloses an electromagnetic relay, comprising: a casing, having a base and an upper cover; a coil set, installed in the base, and a first magnetic yoke arm and a second magnetic yoke arm extending from both ends of the axis of the coil set respectively; a rotating bridge, pivoted into the base and disposed on a side of the coil set, and the rotating bridge, comprising: a main body, having a containment and a plurality of magnetic elements installed in the containment; an abutting plate, penetrating through an upper end of the containment, and having a first abutting section and a second abutting section formed on both sides of the upper end of the containment respectively; wherein when there is a magnetic change of the coil set, the rotating bridge is rotated accordingly, so that the first abutting section abuts against an end of the first magnetic yoke arm, or the second abutting section abuts against an end of the second magnetic yoke arm; and a link plate, penetrating through a lower end of the containment, and having a penetrating portion, a first snap section, and a second snap section, and the penetrating portion being a rectangular plate disposed in the containment, and the first snap section and the second snap section being coupled to both sides of the penetrating portion respectively and extending outwardly from both sides of the lower end of the containment respectively; wherein the first snap section and the second snap section are respectively formed a downward bending configuration relative to the penetration portion, and the end of the first snap section and the end of the second snap section are respectively formed a upward bending configuration; a first extension arm, installed into a first slide groove in the base and disposed on a side of the rotating bridge, and an end of the first extension arm being snapped and coupled to the first snap section, and the first extension arm being movable up and down in the first slide groove; a first switch conductive plate assembly, installed in the base and disposed adjacent to the first extension arm, and comprising: a first pin sheet, partially fixed into the base; a first middle elastic plate, having an end fixedly coupled to the first pin sheet in the base and the other end having a first movable contact facing downward, and snapped and coupled to the first extension arm; and a first conductive plate, partially disposed in the base, and partially extending to the outside of the casing, and having a first fixed contact with a contact surface facing upward and formed at an end inside the base, and the first movable contact and the first fixed contact being configured to be corresponsive to each other; a first gripper module, fixedly coupled to the first conductive plate and disposed outside the casing; a second extension arm, installed in a second slide groove inside the base and disposed on a side of the rotating bridge, and an end of the second extension arm being snapped and coupled to the second snap section, and the second extension arm being movable up and down in the second slide groove; a second switch conductive plate assembly, installed in the base and disposed adjacent to the second extension arm, and comprising: a second pin sheet, partially fixed into the base, and a second fixed contact with a contact surface disposed at an end inside the base and facing downward; a second conductive plate, partially disposed in the base and partially extending to the outside of the casing; and a second middle elastic plate, having an end fixedly coupled to the second conductive plate installed in the base and the other end having a second movable contact with a contact surface facing upward, and this end being snapped and coupled to the second extension arm, and the second movable contact and the second fixed contact being configured to be corresponsive to each other; and a second gripper module, fixedly coupled to the second conductive plate and disposed outside the casing.
and
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the disclosure and, together with the description, serve to explain the principles of the disclosure.
With reference to
The rotating bridge 12 is pivoted into the base 101 and disposed on a side of the coil set 11, and the rotating bridge 12 comprises a main body 121, an abutting plate 122 and a link plate 123. The main body 121 has a containment 1211 and plurality of magnetic elements 1212 installed in the containment 1211, and the abutting plate 122 penetrates through an upper end of the containment 1211, and a first abutting section 1221 and a second abutting section 1222 are formed on both sides of the upper end of the containment 1211. Wherein, when the magnetic force of the coil set 11 is changed, the rotating bridge 12 is rotated correspondingly to define a status of the first abutting section 1221 abutting against an end of the first magnetic yoke arm 111 or the second abutting section 1222 abutting against an end of the second magnetic yoke arm 112. The link plate 123 penetrates through a lower end of the containment 1211, and the link plate 123 has a penetrating portion 1233, a first snap section 1231, and a second snap section 1232, wherein the penetrating portion 1233 is a rectangular plate disposed in the containment 1211, and the first snap section 1231 and the second snap section 1232 are coupled to both sides of the penetrating portion 1233 respectively and extend outwardly from the lower end of the containment 1211. An end of each of the first snap section 1231 and the second snap section 1232 are respectively formed a downward bending configuration with respect to the penetrating portion 1233, and the end of the first snap section 1231 and the end of the second snap section 1232 are respectively formed a upward bending configuration.
The first extension arm 13 is installed in a first slide groove 1011 of the base 101 and disposed on a side of the rotating bridge 12, and an end of the first extension arm 13 is fixedly coupled to the first snap section 1231, and the first extension arm 13 is movable up and down in the first slide groove 1011. The first switch conductive plate assembly 14 is installed in the base 101 and adjacent to the first extension arm 13, and the first switch conductive plate assembly 14 comprises a first pin sheet 141, a first middle elastic plate 142 and a first conductive plate 143. The first pin sheet 141 is partially fixed into the base 101. The first middle elastic plate 142 has an end fixedly coupled to the first pin sheet 141 in the base 101 and the other end having a first movable contact 1421 with a contact surface facing downward, and this end of the first middle elastic plate 142 is snapped and fixed to the first extension arm 13. The first conductive plate 143 is partially disposed in the base 101 and partially extending to the outside of the casing 10, and the end of the first conductive plate 143 disposed in the base 101 has a first fixed contact 1431 with a contact surface facing upward, and the first movable contact 1421 and the first fixed contact 1431 are configured to be corresponsive to each other. The first gripper module 15 and the first conductive plate 143 are fixedly coupled to each other and disposed outside the casing 10, and provided for installing or coupling an external component.
The second extension arm 16 is installed in a second slide groove 1012 of the base 101 and disposed on a side of the rotating bridge 12, and the second extension arm 16 has an end fixedly coupled to the second snap section 1232, and the second extension arm 16 is movable up and down in the second slide groove 1012. The second switch conductive plate assembly 17 is installed in the base 101 and adjacent to the second extension arm 16 comprises a second pin sheet 171, a second conductive plate 172 and a second middle elastic plate 173. The second pin sheet 171 is partially fixed into the base 101, and the end of the second pin sheet 171 disposed in the base 101 has a second fixed contact 1711 with a contact surface facing downward. The second conductive plate 172 is partially disposed in the base 101 and partially extending out of the casing 10. The second middle elastic plate 173 has an end fixedly coupled to the second conductive plate 172 in the base 101 and the other end having a second movable contact 1731 with a contact surface facing upward, and this end of the second middle elastic plate 173 is fixedly coupled to the second extension arm 16, and the second movable contact 1731 and the second fixed contact 1711 are configured to be corresponsive to each other. The second gripper module 18 and the second conductive plate 172 are fixedly coupled are fixedly coupled and disposed outside the casing 10, and provided for installing or coupling an external component.
With the structure of the rotating bridge 12, the first switch conductive plate assembly 14 and the second switch conductive plate assembly 17 can be operated synchronously. In other words, when the first movable contact 1421 and the first fixed contact 1431 in the first switch conductive plate assembly 14 are contacted or disconnected, the second movable contact 1731 and the second fixed contact 1711 in the second switch conductive plate assembly 17 will be contacted or disconnected synchronously, so that the electromagnetic relay 1 can be turned on/off more electrically stable. In addition to the synchronous operation of the two sets of switch conductive plate assemblies, the structure of the present invention also allows the first movable contact 1421 and the first fixed contact 1431 as well as the second movable contact 1731 and the second fixed contact 1711 to have a relatively larger and more appropriate force for their contact, and ensure a sure separation during disconnection, so as to reduce the change of resistance occurred during the operation of the electromagnetic relay 1 to achieve the effects of improving the reliability of electrical switch and increasing the service life of the electromagnetic relay 1.
Further, the electromagnetic relay 1 further comprises a fixed bridge 19 installed in the base 101 and having an end fixedly coupled to the first magnetic yoke arm 111 and the other end fixedly coupled to the second magnetic yoke arm 112, and spanning between the first magnetic yoke arm 111 and the second magnetic yoke arm 112. A pivot 1213 extends from two opposite sides of the containment 1211 of the rotating bridge 12 separately, and the base 101 and the fixed bridge 19 have a pivot hole 1013, 191 configured to be corresponsive to the respective pivot 1213, and each pivot 1213 is installed into the respective pivot hole 1013, 191, so that the rotating bridge 12 can be rotated by using the pivots 1013, 191 as the axis. With the structure of the fixed bridge 19, the pivot holes 1013, 191 of the base 101, and the pivots 1213, the rotating bridge 12 can be rotated by using the pivot 1213 as the axis to improve the rotation stability of the rotating bridge 12.
Preferably, the first extension arm 13 has a first snap slot 131 with an open end, and the first snap section 1231 of the rotating bridge 12 has a first connecting segment 12311 and a first snapping segment 12312, wherein the first snapping segment 12312 is connected to the first connecting segment 12311 to define the upward bending configuration, and the first snapping segment 12312 is snapped in from the open end of the first snap slot 131 and fixedly coupled into the first snap slot 131. The second extension arm 16 has a second snap slot 161 with an open end, and the second snap section 1232 of the rotating bridge 12 has a second connecting segment 12321 and a second snapping segment 12322, wherein the second snapping segment 12322 is connected to the second connecting segment 12321 to define the upward bending configuration, and the second snapping segment 12322 is snapped in from the open end of the second snap slot 161 and fixedly coupled to the second snap slot 161. When the first abutting section 1221 of the rotating bridge 12 abuts against an end of the first magnetic yoke arm 111, the junction of the first snapping segment 12312 and the first connecting segment 12311 abuts against the first snap slot 131, and an end of the second snapping segment 12322 abuts against the second snap slot 161. When the second abutting section 1222 of the rotating bridge 12 abuts against an end of the second magnetic yoke arm 112, an end of the first snapping segment 12312 abuts against the first snap slot 131, and the junction of the second snapping segment 12322 and the second connecting segment 12321 abuts against the second snap slot 161. Therefore, the operation of the rotating bridge 12 can be more stable, and the first switch conductive plate assembly 14 and the second switch conductive plate assembly 17 can be operated in a more synchronous manner.
In
Preferably, the first elastic clip 153 has at least one first elastic clip slot 1531 extending from an end towards the other end of the first elastic clip 153; the second elastic clip 183 has at least one second elastic clip slot 1831 extending from an end towards the other end of the second elastic clip 183, so that the first gripper module 15 and the second gripper module 18 have better plugging and unplugging effect, while taking the clamping force into account. In this embodiment, the first elastic clip 153 has one of the first elastic clip slots 1531, and the second elastic clip 183 has one of the second elastic clip slots 1831.
Besides the first elastic clip 153 and the second elastic clip 183 have the slot, the first secondary clip 152 in a preferred implementation mode has at least one first secondary clip slot 1521 configured to be corresponsive to the first elastic clip slot 1531, and the second secondary clip 182 has at least one second secondary clip slot 1821 configured to be corresponsive to the second elastic clip slot 1831 to improve the flexible change of the first gripper module 15 and the second gripper module 18 during application, so as to achieve the effects of reducing the possibility of having a change of the gap of the first gripper mouth 154 and the gap of the second gripper mouth 184 after their plugging and unplugging, and avoiding an excessive change of resistance at the gaps for each electrical conduction.
With reference to
With reference to
In
In summation of the description above, the novel structural design of the electromagnetic relay 1 of the present invention effectively improves the operation stability. Specifically, the structure of the rotating bridge 12 allows the first switch conductive plate assembly 14 and the second switch conductive plate assembly 17 in the electromagnetic relay 1 to achieve synchronous contact or disconnection during operation and provides an appropriate force to the fixed contact and the movable contact for their contact and ensures a reliable separation for their disconnection, so as to avoid an excessive resistance change and a high temperature occurred during the disconnection or contact of the contacts, which can improve the stability and safety of the application of the electromagnetic relay 1. Further, the present invention also improves the using performance with detailed technical characteristics. For example, the fixed bridge 19 is provided to improve the rotational stability of the rotating bridge 12, and the structural design of the first clip set 15 and the second clip set 18 and the installation of the auxiliary contact module 2 can improve the application performance of the electromagnetic relay 1.
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