A switch is disclosed, including: a static contact; a static iron core; a moving iron core including a narrow part passing through the first opening of the cavity and a widened part immediately adjacent to the narrow part and away from the static contact relative to the narrow part, and the moving iron core passes through the cavity through the first opening and the second opening of the cavity; a moving contact fixedly arranged on the moving iron core, wherein the platform abuts against the static iron core when the moving contact is in contact with the static contact; a coil arranged in the cavity; a reset piece connected to the moving iron core, wherein the reset piece exerts an elastic force on the moving iron core away from the static contact when the static contact is in contact with the moving contact.

An electrical relay (2) includes an electromagnetic drive system for providing bi-directional drive. The electrical relay (2) includes a first a coil (212) and a second coil (213). A current is supplied to the coils (212) and (213) in opposite directions. The two coils (212) and (213) can be used to accelerate the armature in either direction in relation to the two contacts. This can be used to drive the armature to either one of the contacts and to accelerate and decelerate the armature during a single transit. In the latter regard, the armature can be accelerated and decelerated to shorten the transit time, reduce bounce, reduce wear on the contacts, and allow for different contact material options.

An electrical relay (2) includes an electromagnetic drive system for providing bi-directional drive. The electrical relay (2) includes a first a coil (212) and a second coil (213). A current is supplied to the coils (212) and (213) in opposite directions. The two coils (212) and (213) can be used to accelerate the armature in either direction in relation to the two contacts. This can be used to drive the armature to either one of the contacts and to accelerate and decelerate the armature during a single transit. In the latter regard, the armature can be accelerated and decelerated to shorten the transit time, reduce bounce, reduce wear on the contacts, and allow for different contact material options.

Disclosed is a magnetic latching relay having an asymmetrical solenoid structure, the magnetic latching relay comprising an electromagnet portion, a contacting portion, and a drive portion; the electromagnet portion comprises a magnetic conductive component, a coil rack, and a coil; the drive portion comprises a movable iron core; further comprising two pieces of permanent magnet, the two magnets being respectively disposed on the two sides of a coil axis and being respectively adjacent to or in contact with the corresponding sides of the magnetic conductive component; and the two pieces of permanent magnets are within the movement range of the movable iron core in the axial direction of the coil, and are biased towards the moving direction of the movable iron core when a contact is in the closed state, such that the retaining force of the moving iron core is substantially the same in both closed and open states of contact. The present invention introduces biased permanent magnets into a relay having a solenoid electromagnet portion structure to make the relay a magnetic latching relay, for ensuring low heat dissipation while solving the problem of unbalanced action reset voltage of a solenoid electromagnet portion, thus improving product performance and operational reliability.

Disclosed is a magnetic latching relay having an asymmetrical solenoid structure, the magnetic latching relay comprising an electromagnet portion, a contacting portion, and a drive portion; the electromagnet portion comprises a magnetic conductive component, a coil rack, and a coil; the drive portion comprises a movable iron core; further comprising two pieces of permanent magnet, the two magnets being respectively disposed on the two sides of a coil axis and being respectively adjacent to or in contact with the corresponding sides of the magnetic conductive component; and the two pieces of permanent magnets are within the movement range of the movable iron core in the axial direction of the coil, and are biased towards the moving direction of the movable iron core when a contact is in the closed state, such that the retaining force of the moving iron core is substantially the same in both closed and open states of contact. The present invention introduces biased permanent magnets into a relay having a solenoid electromagnet portion structure to make the relay a magnetic latching relay, for ensuring low heat dissipation while solving the problem of unbalanced action reset voltage of a solenoid electromagnet portion, thus improving product performance and operational reliability.

An electromagnetic structure comprising permanent magnets comprises an outer yoke (a6), a first permanent magnet group (a3, a5), an inner yoke (a8), an armature (a1), and a second permanent magnet group (a2, a4). The outer yoke is in a hollow cylinder shape. The first permanent magnet group comprises multiple permanent magnets arrayed in a round shape, the multiple permanent magnets are connected to the outer yoke, and a magnetizing direction of each permanent magnet is along an axial direction. The inner yoke comprises an inner yoke upper base, an inner yoke sidewall, and an inner yoke lower base. The inner yoke upper base and the inner yoke lower base are separately extended outwards and horizontally from an upper end and a lower end of the inner yoke sidewall to form a circular ring. The armature comprises an armature upper base, an armature lower base, and an armature barrel body. The armature barrel body penetrates through the inner yoke sidewall, and the height of the armature barrel body is greater than that of the inner yoke. The armature upper base and the armature lower base are separately in a round shape with a diameter greater than an inner diameter of the inner yoke sidewall. The second permanent magnet group comprises multiple permanent magnets arrayed in a round shape, the multiple permanent magnets are connected to the outer yoke and the inner yoke, and a magnetizing direction of each permanent magnet is along an axial direction. The electromagnetic structure is low in power consumption of a coil, has a good shock resistance performance, and has a good capability against the centrifugal acceleration impact.

An electromagnetic structure comprising permanent magnets comprises an outer yoke (a6), a first permanent magnet group (a3, a5), an inner yoke (a8), an armature (a1), and a second permanent magnet group (a2, a4). The outer yoke is in a hollow cylinder shape. The first permanent magnet group comprises multiple permanent magnets arrayed in a round shape, the multiple permanent magnets are connected to the outer yoke, and a magnetizing direction of each permanent magnet is along an axial direction. The inner yoke comprises an inner yoke upper base, an inner yoke sidewall, and an inner yoke lower base. The inner yoke upper base and the inner yoke lower base are separately extended outwards and horizontally from an upper end and a lower end of the inner yoke sidewall to form a circular ring. The armature comprises an armature upper base, an armature lower base, and an armature barrel body. The armature barrel body penetrates through the inner yoke sidewall, and the height of the armature barrel body is greater than that of the inner yoke. The armature upper base and the armature lower base are separately in a round shape with a diameter greater than an inner diameter of the inner yoke sidewall. The second permanent magnet group comprises multiple permanent magnets arrayed in a round shape, the multiple permanent magnets are connected to the outer yoke and the inner yoke, and a magnetizing direction of each permanent magnet is along an axial direction. The electromagnetic structure is low in power consumption of a coil, has a good shock resistance performance, and has a good capability against the centrifugal acceleration impact.

The present disclosure may fix the second yoke without using an upper cover and a lower cover, thereby having an effect of simplifying the entire structure, and reducing the fabrication cost, and decreasing the fabrication time.

The present disclosure may fix the second yoke without using an upper cover and a lower cover, thereby having an effect of simplifying the entire structure, and reducing the fabrication cost, and decreasing the fabrication time.

An electromagnetic relay includes an electromagnet device, a contact device, and a trip device. The electromagnet device includes a first stator, a movable element, and a first exciting coil. The contact device includes a movable contact and a fixed contact. A trip device includes a second exciting coil. The electromagnet device moves the movable element from a first position to a second position. The trip device moves the movable element to a third position. An open state is reached when the movable element is in the first position and the third position. A closed state is reached when the movable element is in the movable element is in the second position.