CN201504129U - Spiral laminated iron core structure of electric rotating motor - Google Patents

Abstract

The utility model relates to a novel spiral laminated core structure, which comprises a plurality of fan-shaped iron core plates, wherein the intersecting edges of two sides of each fan-shaped iron core plate are respectively provided with a butt joint part used for butt jointing with the adjacent fan-shaped iron core plate. The spiral laminated iron core structure of an electric rotating motor is characterized in that the fan-shaped iron core plates are sequentially spliced along a circular helix to form spiral iron core laminations, the inner edge portion or the outer edge portion of the spiral iron core lamination forms N number of wire embedding slots, and intersecting edges of adjacent two or more rings of the iron core plates are mutually staggered. The structure is not only favorable for improving accuracy of producing and processing laminated iron cores, but also reasonable in structural design and convenient in manufacturing.

Description

The electric rotating machine core structure of spiral lamination

Technical field

The utility model relates to a kind of novel core structure of electric rotating machine of spiral lamination.

Background technology

Current, more and more for the use of motor.Correspondingly, also more and more higher for the requirement of stator core.At present, very most of electric rotating machine external stator core is spliced into ring back adjacent two layers (or which floor) seam portion by the identical shaped segmental core sheet of plurality of sections successively along circumference and is staggeredly stacked into individual components.Iron core is provided with the line embedding groove that is used to place the stator coil winding along inner edge portion, adjacent segmental core sheet junction was located on the inner periphery radial transmission line at line embedding groove middle part, the handing-over limit is provided with the tenon of splicing with the adjacent segment lamination, half cramp groove is respectively established in outer rim seam crossing both sides, piece together the back and become a cramp groove, iron core is shaped by V-arrangement cramp snap fastener film trap is fixing, and the iron core two ends that have also are provided with end clamp plate and iron-core workpiece welding.There is following shortcoming in this structure: pushed by the V-arrangement cramp, cause the dislocation of lamination and slotted eye, iron core circularity is poor, and horn mouth appears in the iron core two ends, and core side is to intensity difference, and the junction magnetic resistance increases local pyrexia; 2, one deck of staggered each other adjacent two layers lamination is that each half cramp grooves of seam crossing both sides contacts with cramp, causes the adjacent layer locating effect poor, and the iron core cylindricity is poor, and core side is to intensity difference; 3, the cramp groove is located at the line embedding groove top center, causes iron core yoke portion to die-off at line embedding groove top center place area of section, and magnetic density increases, local pyrexia; 4, tenon can't close-fitting, otherwise arrangement tenon difficulty when coincideing; 5, the extruding of cramp groove and cramp corner angle cusp the time always has local dent to protrude again, and at the iron core compacting process, cramp is during with the relative slippage of cramp groove, pulls again each other, the crowded contact-making surface of hindering; 6, cramp contacts with cramp corner angle cusp with the cramp groove, and the adjacent two layers lamination is not forced position limiting structure, whole iron core is fastening by extruding force, causes the both ends lamination loose, the lateral strength extreme difference, move, in the next procedure course of processing, again or under powerful electromagnetic force, oscillating action, will produce distortion, the sheet displacement, adverse effects such as sheet vibration, so motor performance shakiness, security incident caused.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of core structure of spiral lamination is provided, and this structure not only helps improving the production and processing precision of laminated core, and reasonable in design, and is convenient to automatic nest plate production.

For achieving the above object, the technical solution of the utility model is: a kind of core structure of spiral lamination, comprise some segmental core sheets, be respectively equipped with on the described segmental core sheet both sides handing-over limit and be used for the docking section that connects with adjacent segmental core sheet, it is characterized in that: described each segmental core sheet is spliced into the helical form core lamination stack successively along circular helix, the inner edge portion of described helical form core lamination stack or outer edge form N line embedding groove, stagger mutually in the handing-over limit of two adjacent rings or multi-turn lamination.

The beneficial effects of the utility model are to adopt the spiral lamination to make iron core, changed the traditional processing technology of iron core, whole iron core is an integral structure, clamp down on mutually up and down, the accurate location that helps each lamination of iron core, radial dimension, circularity and deviation from cylindrical form are effectively guaranteed, and skewed slot gradient error is effectively guaranteed by the punching precision.Simultaneously, by structural design cleverly and in conjunction with film synchronizer automatically, staggered mutually in the handing-over limit of adjacent turn segmental core sheet, thereby realized the integral type spiral link structure of segmental core sheet.

The utility model is described in further detail below in conjunction with drawings and the specific embodiments.

Description of drawings

Fig. 1 is the end view of the utility model embodiment one.

Fig. 2 is the wherein structural representation of a circle of the utility model embodiment one.

Fig. 3 is the wherein structural representation of a circle of the utility model embodiment two.

Fig. 4 is the wherein structural representation of a circle of the utility model embodiment three.

Embodiment

The electric rotating machine core structure of spiral lamination of the present utility model, as shown in Figure 1 and Figure 2, comprise some segmental core sheets 1, segmental core sheet 1 one top-cross edge fits are provided with butt joint protuberance 2, opposite side handing-over limit is provided with and docks the butt joint recess 3 that protuberance 2 is complementary, with adjacent segmental core sheet on the protuberance 2 that docks connect.Each segmental core sheet 1 is spliced into helical form core lamination stack 4 successively along circular helix, and forms N line embedding groove 7 in helical form core lamination stack 4 inner edge portion or outer edge.The utility model both can be applicable to the stator of electric rotating machine, also can be applicable to the rotor of electric rotating machine.Here need to prove that electric rotating machine described in the utility model refers in particular to generator and motor.

For the uniform iron core of N groove, the central angle Q of the adjacent two groove correspondences of segmental core sheet can adopt following formula to calculate:

$Q=\frac{360}{N}\±\frac{\mathrm{\λ}\×K}{N\×H}$

Wherein,

Q: the angle of the central angle of the adjacent two groove correspondences of expression segmental core sheet;

N: the number of the line embedding groove of expression helical form core lamination stack inner edge portion;

λ: represent the off(-)center angle of same line embedding groove, for straight trough iron core λ=0 in helical form core lamination stack both ends of the surface;

H: the number of total coils of expression helical form core lamination stack;

K: the bar number of expression helical form core lamination stack.If each segmental core sheet 1 along wall scroll cylindrical screw splicing, then is a single-wire helix shape core lamination stack, the bar number of helical form core lamination stack is 1; And if along a plurality of cylindrical screw splicings, then be spliced into multi-thread helical form core lamination stack, at this moment, the bar number of helical form core lamination stack is a plural number, if adjacent two circular helixes each other the lamination seam stagger more than the groove, described plural number is an even number.

For single-wire helix shape core lamination stack and each sheet is identical, the N groove is uniform, the central angle W of segmental core sheet correspondence, as shown in Figure 4, and the stagger central angle of P * Q degree of adjacent layer lamination seam, W can adopt following formula to calculate:

W＝[360±(λ×K)÷H-P×Q]÷L

The central angle of W segmental core sheet correspondence;

P, L get the integer greater than 0;

The pact of the central angle=P of adjacent two cramp groove correspondences * Q degree or P * Q several times and the cramp groove be uniformly distributed along the circumference.

For even lines helical form core lamination stack and each sheet is identical, the lamination seam of uniform, adjacent two lines of N groove staggers more than the groove, the central angle W of segmental core sheet correspondence, also can adopt following formula to calculate:

W＝[360±(λ×K)÷H]÷L

L gets the integer greater than 0;

The pact of the central angle=P of adjacent two cramp groove correspondences * Q degree or P * Q several times and the cramp groove be uniformly distributed along the circumference, P gets the integer greater than 0.

In order to reduce the machining deformation of core lamination stack, for the electric rotating machine external stator, segmental core sheet outer rim is provided with the fastening slotted eye in location, and the fastening slotted eye in described location is not crossed over the handing-over limit of segmental core sheet.

In embodiment one, as shown in Figure 2, the fastening slotted eye in described location is a circular slotted eye 5 that can plug little pole or circular wire rod, and circular slotted eye 5 sides are provided with pad 6.After having overlapped the sheet arrangement, be pressed into circular slotted eye 5, play whole anastomosis just with little pole.After the compacting, whole weldering.

In embodiment two, as shown in Figure 3, the fastening slotted eye in described location is the cramp groove 8 that is used to plug cramp.

As shown in Figure 3, for the skewed slot iron core, just forming N line embedding groove uniform with the splicing of M identical lamination spiral successively is example, because the central angle W of each segmental core sheet 9 correspondence equals { [360 ± (the ÷ H of λ * K)] ÷ M} degree, the pairing central angle in back equals [360 ± (the ÷ H of λ * K)] and spends so M segmental core sheet is connected, therefore, M+1 segmental core sheet is threaded to the downside of the 1st segmental core sheet, the line embedding groove that the corresponds to each other angle that staggered, iron core line embedding groove gradient forms naturally.

For big stator core, described segmental core sheet outer rim also can be provided with the fastening slotted eye in a plurality of location, and the form of described a plurality of location notchs is the combination that is used to plug cramp groove or the circular slotted eye and the cramp groove of cramp for circular slotted eye, the fastening slotted eye in location that can plug little pole or circular wire rod.

More than be preferred embodiment of the present utility model, all changes of doing according to technical solutions of the utility model when the function that is produced does not exceed the scope of technical solutions of the utility model, all belong to protection range of the present utility model.

Claims (8)

1. the electric rotating machine core structure of a spiral lamination, comprise some segmental core sheets, be respectively equipped with on the described segmental core sheet both sides handing-over limit and be used for the docking section that connects with adjacent segmental core sheet, it is characterized in that: described each segmental core sheet is spliced into the helical form core lamination stack successively along circular helix, the inner edge portion of described helical form core lamination stack or outer edge form N line embedding groove, stagger mutually in the handing-over limit of two adjacent rings or multi-turn lamination.

2. the core structure of spiral lamination according to claim 1 is characterized in that: described each segmental core sheet is spliced into single-wire helix shape core lamination stack successively along the wall scroll circular helix.

3. the core structure of spiral lamination according to claim 1 is characterized in that: described each segmental core sheet is spliced into multi-thread helical form core lamination stack successively along a plurality of circular helixes.

4. according to the core structure of claim 1,2 or 3 described spiral laminations, it is characterized in that: described each segmental core sheet outer rim is provided with the fastening slotted eye in location, and the fastening slotted eye in described location is not crossed over the handing-over limit of segmental core sheet.

5. the core structure of spiral lamination according to claim 4 is characterized in that: the fastening slotted eye side in described location is provided with pad.

6. the core structure of spiral lamination according to claim 4 is characterized in that: the fastening slotted eye in described location is for plugging the circular slotted eye of little pole or circular wire rod.

7. the core structure of spiral lamination according to claim 4 is characterized in that: the fastening slotted eye in described location is the cramp groove that is used to plug cramp.

8. the core structure of spiral lamination according to claim 4, it is characterized in that: described segmental core sheet outer rim is provided with the fastening slotted eye in a plurality of location, and the fastening slotted eye in described a plurality of location is the circular slotted eye that can plug little pole or circular wire rod, the combination that is used to plug cramp groove or the circular slotted eye and the cramp groove of cramp.

Images