CN203039441U

CN203039441U - Magneto iron core

Info

Publication number: CN203039441U
Application number: CN 201220748544
Authority: CN
Inventors: 李浪; 万涛
Original assignee: CHONGQING JINJING ELECTRIC MANUFACTURING Co Ltd
Current assignee: CHONGQING JINJING ELECTRIC MANUFACTURING Co Ltd
Priority date: 2012-12-30
Filing date: 2012-12-30
Publication date: 2013-07-03
Anticipated expiration: 2022-12-30

Abstract

The utility model discloses a magneto iron core. The magneto iron core comprises a bar-type coiling portion and end heads of two ends of the bar-type coiling portion. The each end head possesses an arc surface which is protruded outwardly along a longitudinal axis of the bar-type coiling portion and is used to cut a magnetic field. An arc length S of the arc surface is 22mm. The arc surface is extended to a central of the bar-type coiling portion and the arc length S increases at least 3mm. By using the magneto iron core of the utility model, an internal resistance of the iron core can be reduced so as to reduce generation of heat of the magneto; an operating temperature of the magneto is reduced; magneto working performance is stable and a service life is long.

Description

A kind of magneto iron core

Technical field

The utility model relates to a kind of iron core, the iron core on the magnetic motor for motorcycle.

Background technology

Temperature rise during magneto work at present, performance descends relatively, and works under hot environment for a long time and easily shorten the useful life of motor.The main cause that temperature raises when causing magneto work is that the internal resistance of iron core is bigger, and the heat that produces in the course of work is higher.Power loss in the iron core claims that again " iron loss " is to cause the main cause of iron core heating, iron loss is divided into " magnetic hysteresis loss " and " eddy current loss " again, " magnetic hysteresis loss " is that iron core is in magnetization process, owing to " iron loss " that exist hysteresis to produce, the size of this loss is directly proportional with the area size that the magnetic hysteresis loop of material surrounds.Conductor is mobile or when being in the mM disodium hydrogen phosphate, the energy loss that the electric current of inducting in the conductor causes is called " eddy current loss " in non-uniform magnetic-field.Electric current line in that the inner circle trap that forms of conductor is closed is called eddy current (claiming Foucault current again).Factors such as the magnetic permeability of the motion of the size of " eddy current loss " and the variation pattern in magnetic field, conductor, the geometry of conductor, conductor and conductivity are relevant.

Summary of the invention

At above-mentioned weak point of the prior art, the utility model provides a kind of magneto iron core, can reduce the iron core internal resistance, thereby reduces the generation of magneto heat.

The technical solution of the utility model is a kind of magneto iron core, the termination that comprises bar shaped winding section and two ends thereof, described termination has the arc surface that is used for cutting magnetic field that outwards protrudes along bar shaped winding section longitudinal axis, the arc length S of described arc surface is 22mm, described arc surface extends to bar shaped winding section central authorities, and its arc length S increases 3mm at least.

Further, the thickness D of institute's iron core is reduced by at least 1mm.Can reduce the use amount of copper cash.

Further, described iron core is superimposed lamination riveted joint.

Further, described the superiors' lamination and orlop lamination all have counterbore corresponding to riveted joint place.

Further, described lamination surface is coated with thickness greater than the color zinc of 7 μ m.Be conducive to reduce eddy current loss.

The beneficial effects of the utility model are: the arc length S of arc surface increases, then the arc surface area increases, magnetic property strengthens, be that magnetic permeability improves, magnetic hysteresis loss reduces, and reduces thereby magneto produces heat, has reduced the working temperature of magneto, the magneto service behaviour is more stable, longer service life.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is front view of the present utility model;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the C-C cutaway view of Fig. 2.

Embodiment

Further describe the utility model below in conjunction with specific embodiment and accompanying drawing.

A kind of magneto iron core, the termination 2 that comprises bar shaped winding section 1 and two ends thereof, described termination 2 has the arc surface that is used for cutting magnetic field that outwards protrudes along the longitudinal axis of bar shaped winding section 1, the arc length S of described arc surface is 22mm, described arc surface is the extension of 1 central authorities to the bar shaped winding section, and its arc length S increases 3mm at least.The thickness D of institute's iron core is reduced by at least 1mm.Described iron core is superimposed lamination riveted joint.Described the superiors lamination and orlop lamination all have counterbore 3 corresponding to riveted joint place.Described lamination surface is coated with thickness greater than the color zinc of 7 μ m.

More than technical scheme that the utility model embodiment is provided be described in detail, used specific case herein principle and the execution mode of the utility model embodiment are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as restriction of the present utility model.

Claims

1. magneto iron core, the termination that comprises bar shaped winding section and two ends thereof, described termination has the arc surface that is used for cutting magnetic field that outwards protrudes along bar shaped winding section longitudinal axis, the arc length S of described arc surface is 22mm, it is characterized in that: described arc surface extends to bar shaped winding section central authorities, and its arc length S increases 3mm at least.

2. magneto iron core according to claim 1, it is characterized in that: the thickness D of institute's iron core is reduced by at least 1mm.

3. magneto iron core according to claim 1 and 2 is characterized in that: described iron core is superimposed lamination riveted joint.

4. magneto iron core according to claim 3, it is characterized in that: described the superiors lamination and orlop lamination all have counterbore corresponding to riveted joint place.

5. magneto iron core according to claim 4, it is characterized in that: described lamination surface is coated with thickness greater than the color zinc of 7 μ m.