摘要:
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.
摘要:
A bistable electromagnetic actuator including: a tube; a stator arranged outside the tube, and a rotor mounted in the tube so as to be displaceable axially in the longitudinal direction, is the rotor being at least partially formed of one or more of a paramagnetic and ferromagnetic material, the rotor being reversibly moved between a first position and a second position by applying an electromagnetic field. Wherein the stator includes: two ring permanent magnets that are axially polarized in opposite directions, a coil for generating the electromagnetic field, and a magnetic return element having two stator pole shoes. Wherein, the magnetic return element with the stator pole shoes encloses the coil, one of the stator pole shoes is arranged on each of two sides of the coil between the coil and ring permanent magnets, the rotor has two rotor pole shoes, and an axial width of the stator pole shoes is smaller than an axial width of the rotor pole shoes.
摘要:
In a solenoid of a hydraulic pressure control apparatus, a region adjacent to an oil flow guide portion of a stopper breathing passage is formed in a magnetism application region, through which a leakage magnetic flux leaking from a magnetic circuit at a time of turning on of a coil passes. Thereby, magnetic foreign objects made of iron or iron containing material are magnetically attracted to the leakage magnetic flux, so that intrusion of the foreign objects from an outside of the solenoid into a second volume variable chamber through the stopper breathing passage is limited.
摘要:
A short-circuit release is disclosed, in particular for a power circuit-breaker, including an armature and a pole, that are located inside of a coil element; and a yoke plate and a terminal connection, which are arranged around the coil element. In at least one embodiment, a coil is wound on the coil element, the two ends of which are weldable on corresponding coil terminals from the same side.
摘要:
The invention relates to a solenoid housing fabricated by a method which allows a manufacturer to produce a high performing product while minimizing manufacturing complexity and time. The instant invention uses cold-forging techniques to reduce the need for fine machining processes.
摘要:
A short-circuit release is disclosed, in particular for a power circuit-breaker, including an armature and a pole, that are located inside of a coil element; and a yoke plate and a terminal connection, which are arranged around the coil element. In at least one embodiment, a coil is wound on the coil element, the two ends of which are weldable on corresponding coil terminals from the same side.
摘要:
An electromagnet may comprise a pole piece (20) and coil assembly (30). The pole piece (20) may be magnetically susceptible and have a channel structure and a first flange member (22). The channel structure may have an annular inner side wall (24), an annular outer side wall (26) and an annular end wall (28) that fixedly couples the inner and outer side walls (24, 26) to one another on a first axial end (27) of the pole piece (20). The channel structure may be open on a second axial end (29) of the pole piece (20) that is opposite the first axial end (27). The first flange member (22) may be coupled to an end of one of the inner and outer side walls (24, 26) on the second axial end (29) and extend in a radial direction of the pole piece (20) towards an interior of the channel structure. The coil assembly (30) may be fixedly coupled to the channel structure between the inner and outer side walls (24, 26).
摘要:
A method provides a portion of a transformer by forming a core by providing transformer core material, cutting individual laminations and bending them into generally C-shaped members, stacking some members to define a first core portion having a main leg and two opposing end legs, stacking other members to define a second core portion having a main leg and two opposing end legs, arranging the main legs in a back-to-back manner to define the core having a core leg defined by the two main legs, and opposing core yokes, defined by the end legs. Conductive material is wound directly around the core leg to form a primary winding and secondary winding in any order of arrangement, thus providing a first transformer portion. The transformer portion may be part of a single transformer or, when second and third transformer portions are provided, as part of a three-phase transformer.
摘要:
A short-circuit release is disclosed, in particular for a power circuit-breaker, including an armature and a pole, that are located inside of a coil element; and a yoke plate and a terminal connection, which are arranged around the coil element. In at least one embodiment, a coil is wound on the coil element, the two ends of which are weldable on corresponding coil terminals from the same side.
摘要:
A solenoid arrangement having an armature member that is segmented to help minimize the radial force due to eccentricity of the armature member. The solenoid arrangement has a magnetic coil that when energized will create magnetic flux in the flux path. A pole piece is partly circumscribed by the armature member. Inner and outer air gaps are located about the armature member. Eccentricity of the armature member results in a decrease in one of the air gaps and a corresponding increase in the other. Radial gaps segment the armature member to interrupt the circumferential flux path about the armature member to inhibit magnetic flux from swirling to the side nearest the pole piece and to distribute magnetic flux substantially evenly. The radial force acting on the armature member is reduced resulting in reduced friction between solenoid components while substantially preserving the desirable level of axial force.