CN2706842Y

CN2706842Y - Composite electromagnetic iron core

Info

Publication number: CN2706842Y
Application number: CN 200420041836
Authority: CN
Inventors: 马小安
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-26
Filing date: 2004-04-26
Publication date: 2005-06-29
Anticipated expiration: 2014-04-26

Abstract

The utility model provides a composite electromagnetic iron core; a movable iron core is arranged in a fixing iron core having an excitation coil, and a force output shaft is arranged on the movable iron core. The movable iron core is provided with an E-shaped vertical section, and a concave groove is faced to the fixing iron core; the shape of the fixing iron core is that an L-shaped fixing iron core is arranged at the outer side of the fixing iron core whose concave groove is faced to the movable iron core, and whose vertical section is E-shaped; the excitation coil is arranged in the concave groove that is provided with a movable iron core and a fixing iron core. The fixing iron core adopts the advantage of suction electromagnet fixing iron core, and the movable iron core adopts the advantage of clapper type electromagnet movable iron core. The utility model has the advantages of reasonable design, small exciter current, big electromagnetic attraction, fast suction speed, good use effect, low cost, low energy consumption, etc.; Under the same suction, distance of run, the use iron core material is less, the primary material is economized, and the production cost is reduced. The utility model can be used as an electromagnetic control element, such as an electromagnetic brake, an electromagneticvalve, an electromagnetic device, a permanent magnetism mechanism, etc.

Description

The combined electromagnetic iron core

Technical field

The utility model belongs to electromagnetic technology field, is specifically related to the combined electromagnetic iron core.

Background technology

Existing general rectilinear motion electromagnet is divided into beating type electromagnet and plunger electromagnet, and its attracting process is to utilize electromagnetic attraction that iron core is moved to the static iron core direction; Under attracting state, moving iron core and static iron core remain on fixing position.In the mechanism of claspless mechanism, electromagnetic core is pull-in on the fixing position iron core by the electromagnetic attraction that continued power produces.For specification and the bigger electromagnet of stroke, in attracting process and hold mode, the size of exciting current is to weigh the key index of this electromagnet efficient.In some applications, response speed is the important indicator of electromagnet.

Beating type electromagnet, commonly used have an E shape, and its structure is: magnet exciting coil is sleeved in the middle of the groove of E shape iron core, has two adhesive faces to be distributed in the inside and outside of magnet exciting coil respectively.An adhesive face is respectively arranged inside and outside the magnet exciting coil of beating type electromagnet, and when electromagnetic actuation, the suction area of electromagnet equals the summation of inside and outside suction area, is 2 times of inner suction area in theory.Electromagnetic attraction and suction area are in direct ratio, so the advantage of clapper-type structure is that magnetic attraction is bigger 2 times than the suction-type structure of single suction surface under the situation that sectional area equates.Its shortcoming be when electromagnet from released state to beginning during adhesive, the gas length of the magnetic line of force equals 2 times of stroke, and promptly the magnetic resistance in loop is big 2 times, presses square inversely proportional relation of suction and gas length, desire to make iron core to move, need magnet exciting coil to produce bigger electric power.This clapper-type electromagnetic iron core can only be applicable to the electromagnet that needs moving iron core shift motion short.

Plunger electromagnet, commonly used having is cup-shaped, its structure is: the outer setting of magnet exciting coil has static iron core, magnet exciting coil inside is provided with the moving iron core of a cylindricality, static iron core is provided with one and the moving corresponding stud bump of iron core of cylindricality, be used to guide the magnetic line of force, make the magnetic line of force more effectively focus on the suction surface of the moving iron core of cylindricality, its suction area is the cross-sectional area of cylindricality iron core.Plunger electromagnet is compared with beating type electromagnet, in working gas gap, produce the electromagnetic attraction, in the air gap of helix tube type magnet exciting coil and armature side, also can produce electric power, the moving iron core of cylindricality obtains two electrodynamic making a concerted effort, its major advantage is the initial stage at attracting process, and the electric power that requires than clapper-type is little.The major defect of plunger electromagnet is to have only a suction surface that is positioned at magnet exciting coil, desire produces the suction identical with beating type electromagnet, the sectional area of its moving iron core is 2 times of beating type electromagnet inner suction area, simultaneously, in order to guarantee there is not the magnetic saturation phenomenon in the magnetic circuit, the cross section of static iron core also must increase 2 times, so, just need to increase the volume of electromagnet, increase the cost of product.

Summary of the invention

Technical problem to be solved in the utility model is to overcome the shortcoming of above-mentioned electromagnetic core, and a kind of reasonable in design, electromagnetic attraction is big, result of use good, production cost is low, energy consumption is low combined electromagnetic iron core is provided.

Solving the problems of the technologies described above the technical scheme that is adopted is: be provided with moving iron core in being provided with the static iron core of magnet exciting coil, power output shaft is arranged on the moving iron core.Its moving iron core is: vertical section is an E shape, and its Baltimore groove is towards static iron core.Being shaped as of its static iron core: is the L shaped static iron core of arranged outside of E shape static iron core at Baltimore groove towards moving iron core vertical section, and magnet exciting coil is arranged in the Baltimore groove of moving iron core and static iron core.

The L shaped static iron core gap the most nearby of moving iron core lateral surface of the present utility model and static iron core is less than the stroke of moving iron core.

The profile of moving iron core of the present utility model and static iron core is cylinder or prism.

The utility model has been adopted the advantage of plunger electromagnet and beating type electromagnet, make electromagnet in attracting process, the advantage that possesses plunger electromagnet, brought into play the guiding function of iron core effectively to the magnetic line of force, at attracting state, the advantage that possesses beating type electromagnet has effectively utilized the suction area of iron core.Under the condition identical at suction, that stroke is identical, used core material is less, has reduced exciting current, has improved sucting speed.The utlity model has reasonable in design, exciting current is little, electromagnetic attraction is big, sucting speed is fast, result of use is good, production cost is low, low power consumption and other advantages, can be used as the Electromagnetic Control element of electromagnetic brake, electromagnetically operated valve, electromagnetic mechanism, permanent magnet mechanism etc.

Description of drawings

Fig. 1 is a cutaway view of the present utility model.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described, but the utility model is not limited to these embodiment.

Embodiment 1

In Fig. 1, the structure of present embodiment combined electromagnetic iron core is the cylindricality solid along the central shaft rotation, and it is to be connected by moving iron core 1, static iron core 2, power output shaft 3, magnet exciting coil 4 to constitute.

The vertical cross-section of the moving iron core 1 of present embodiment is an E shape, and the Baltimore groove of moving iron core 1 is processed with centre bore towards static iron core 2 in the center of moving iron core 1, and the centre bore internal fixation of moving iron core 1 is equipped with power output shaft 3, and power output shaft 3 is to make with non-magnet material.The moving iron core 1 of this structure is compared with the moving iron core of plunger electromagnet, has increased the magnetic attraction area.

On power output shaft 3, be set with static iron core 2, the static iron core 2 of present embodiment is to be connected as a single entity by E shape static iron core 2-1 and L shaped static iron core 2-2 to constitute, the lateral surface of the vertical part medial surface of L shaped static iron core 2-2 and E shape static iron core 2-1 is connected as a single entity, the Baltimore groove of E shape static iron core 2-1 is towards moving iron core 1, and the groove width of the Baltimore groove of E shape static iron core 2-1 equates with the groove width of the Baltimore groove of moving iron core 1.

The static iron core 2 of present embodiment is compared with the static iron core of beating type electromagnet, the E shape static iron core 2-1 of static iron core 2 is identical with the static iron core of beating type electromagnet, has increased L shaped static iron core 2-2, has reduced the magnetic gap in the magnetic circuit, help initial stage, reduce exciting current at attracting process.In the Baltimore groove in moving iron core 1 and static iron core 2 magnet exciting coil 4 is installed, the structure of magnet exciting coil 4 is identical with the structure of the magnet exciting coil of beating type electromagnet and plunger electromagnet.One end and the moving iron core of power output shaft 3 is fixedly connected, the other end passes and inserts in the centre bore of static iron core 2 in magnet exciting coil 4, can move in the centre bore of static iron core 2.Non-magnetic conduction sheet also can be installed less than the stroke of moving iron core 1 in the L shaped static iron core 2-2 gap the most nearby of moving iron core 1 lateral surface and static iron core 2 in the L shaped static iron core 2-2 gap the most nearby of moving iron core 1 lateral surface and static iron core 2.When magnet exciting coil 4 has electric current to pass through, between moving iron core 1 and static iron core 2, produce suction, moving iron core 1 moves adhesive to static iron core 2.The electromagnetic core of this structure, its static iron core 2 has been adopted the advantage of plunger electromagnet static iron core, its moving iron core 1 has been adopted the advantage of the moving iron core of beating type electromagnet, reduce exciting current, improved sucting speed, under the condition identical at suction, that stroke is identical, used core material is less, has saved raw material, has reduced production cost.The electromagnetic core of this structure is particularly suitable as big specification, large-stroke electromagnetic iron core.

Embodiment 2

In the present embodiment, the structure of combined type iron core is the four prism type solid.The profile of moving iron core 1 is a four prism type, and the profile of static iron core 2 is the four prism type structure of Baltimore groove towards moving iron core 1.The connecting relation of other parts and parts is identical with embodiment 1.

Claims

1, a kind of combined electromagnetic iron core, in the static iron core that is provided with magnet exciting coil (4) (2), be provided with moving iron core (1), power output shaft (3) is arranged on the moving iron core (1), and it is characterized in that said moving iron core (1) is: vertical section is an E shape, and its Baltimore groove is towards static iron core (2); Being shaped as of said static iron core (2): is the L shaped static iron core of arranged outside (2-2) of E shape static iron core (2-1) at Baltimore groove towards moving iron core (1) vertical section, and magnet exciting coil (4) is arranged in the Baltimore groove of moving iron core (1) and static iron core (2).

2, according to the described combined electromagnetic iron core of claim 1, it is characterized in that: L shaped static iron core (2-2) gap the most nearby of said moving iron core (1) lateral surface and static iron core (2) is less than the stroke of moving iron core (1).

3, according to claim 1 or 2 described combined electromagnetic iron cores, it is characterized in that: the profile of said moving iron core (1) and static iron core (2) is cylinder or prism.