CN208522545U - It is a kind of to intersect folded button hinge type electric machine with aluminium winding stator core - Google Patents

Abstract

Intersect folded button hinge type electric machine with aluminium winding stator core the utility model discloses a kind of, the stator core includes the stator punching small pieces of multiple mutually folded buttons, the stator punching small pieces include outer yoke portion (9) and interior teeth portion (8), the end of left and right two of the outer yoke portion (9) includes outer end angle (2) and inner end angle (4), the outer end angle (2) is acute angle or right angle, the inner end angle (4) is obtuse angle, the outer end angle (2) is equipped with the first lug boss (3), the back side of first lug boss (3) is formed with the first recessed portion, inner end angle (4) includes inner edge (70) and side (60), the inner edge (70) and the interior teeth portion (8) of stator punching small pieces are perpendicular.In the motor stator core of same specification size, width of rebate after the expansion of stator core in the utility model between adjacent stators punching small pieces compared to the prior art in width of rebate it is bigger, so that it is offline to be more suitable for electric machine with aluminium winding automation.

Description

It is a kind of to intersect folded button hinge type electric machine with aluminium winding stator core

Technical field

The utility model relates to motor stator technical fields, more particularly to a kind of intersection fastener type brushless direct-current variable-frequency electric The stator of machine.

Background technique

Stator is the stationary part of motor.Stator is made of stator core, stator winding and base three parts.

Existing stator core has multi-disc stator punching to be formed by stacking, and the manufacturing process of stator punching is rushed on silicon strip Stator punching processed, the shape of the stator punching of conventional structure are monoblock type, and structure is closed-type circular, inner headed face punching contract slot For winding electromagnetic wire, the waste material that the stator punching of this kind of monoblock type shape generates during punching is more, is unfavorable for motor system Enterprise's save the cost in stator punching discharge is made, rear road discharge process can only abide by Xun routine and side by side punching stator punching. Moreover, the stator punching of this kind of shape coil winding machine wind electromagnetic wire when, due to electromagnetic wire be by line mouth draw, by coil winding machine Line mouth width gaps influence, electromagnetic wire wind after, two sides there will necessarily be gap, therefore the copper factor of stator punching is not Height, copper factor is only 65% or so.Fraction block structure traditional simultaneously is since stator yoke disconnects, and with the presence of air gap, therefore generates Magnetic potential of air gap causes magnetic potential to damage.

In view of disadvantage mentioned above, a kind of (stator for intersecting fastener type brushless DC variable frequency motor of patent 201110305793.4 Iron core) a kind of split type stator punching is devised, it is formed wherein single stator core intersects folded button by multiple punching small pieces, stator One end of punching small pieces is the circular arc of protrusion, and the other end is spill, and arc end is located at the center point and is provided with positioning convex point, the positioning Salient point is convex recessed, and multiple stator punching fritters intersect the folded stator core for being fastened as a bar shaped, and then a circle is made in circle Stator core, be welded into a circular entirety in head and the tail junction.The technical solution can effectively, the slot that improves stator it is full Rate reduces the air gap leakage field in stator core yoke portion, is conducive to the efficiency for improving the electromagnetic performance of motor, motor.

But in the technical solution disclosed in patent 201110305793.4, two ends of the punching small pieces of stator are in Semicircle, while positioning convex point is located at the centre of end, when stator punching fritter, which intersects folded button, forms a straight iron core, The notch length for being used to place winding conducting wire between two neighboring punching small pieces is stator punching small pieces symmetry axis to convex Twice (being detailed in Fig. 5) of point distance a.

In the production of motor, stator winding may may also be made using copper wire of aluminum steel, and same specification motor aluminum Line line footpath is more relatively large than copper wire.When stator core expansion is straight, if being led for placing winding between two punching small pieces It is offline to be not easy to the biggish electric machine with aluminium winding automation of line footpath for the lesser words of notch length b of line.

Utility model content

The purpose of the utility model is to provide the motor of notch length after being unfolded between a kind of two punching small pieces of increase is fixed Sub- iron core.

A kind of to intersect folded button hinge type electric machine with aluminium winding stator core, the stator core includes the stator of multiple mutually folded buttons Punching small pieces, the stator punching small pieces include outer yoke portion and interior teeth portion, and the end of left and right two in the outer yoke portion includes outer Angle and inner end angle are held, the outer end angle is acute angle or right angle, and the inner end angle is obtuse angle, and it is convex that the outer end angle is equipped with first The portion of rising, the back side of first lug boss is formed with the first recessed portion.

Preferably, inner end angle includes inner edge and side, the interior teeth portion of the inner edge and stator punching small pieces is perpendicular, institute Side is stated as common to inner end angle, outer end angle.

Preferably, the angle between inner edge and side is 110 °.

Preferably, the outer end angle further includes outside, the angle between the outside and side is 90 °.

Preferably, first lug boss, the first recessed portion are formed by stator punching small pieces are stamped.

Preferably, being additionally provided with the second lug boss in outer yoke portion, the back side of second lug boss is formed with the second recess Portion.

Preferably, second lug boss, the second recessed portion are also formed by stator punching small pieces are stamped.

The technical effect of the utility model is as follows: in the motor stator core of same specification size, in the utility model Stator core expansion after width of rebate between adjacent stators punching small pieces compared to the prior art in width of rebate it is bigger, It is offline to be more suitable for electric machine with aluminium winding automation.

Detailed description of the invention

Fig. 1 is the schematic diagram of stator punching small pieces in embodiment 1.

Fig. 2 is the connection schematic diagram of stator punching small pieces in embodiment 1.

Fig. 3 is the schematic diagram after the stator punching small pieces expansion of motor stator in embodiment 1.

Fig. 4 is the stator punching small pieces circle system schematic diagram after molding of motor stator in embodiment 1.

Fig. 5 is the contrast schematic diagram of stator punching small pieces and stator punching small pieces in the prior art in embodiment 1.

Specific embodiment

Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.These embodiments are only For illustrating the utility model, and it is not limitation of the utility model.

Embodiment 1

In the description of the present invention, it should be noted that term " on ", "lower", "front", "rear", "left", "right", The orientation or positional relationship of equal instructions is to be based on the orientation or positional relationship shown in the drawings, and being merely for convenience of description, this is practical new Type and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation Construction and operation, therefore should not be understood as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, on can understanding as the case may be State the concrete meaning of term in the present invention.

In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.

A kind of to intersect folded button hinge type electric machine with aluminium winding stator core, the stator core includes the stator of multiple mutually folded buttons Punching small pieces, as shown in Figure 1, the stator punching small pieces include outer yoke portion 9 and interior teeth portion 8, the left and right two in the outer yoke portion 9 End includes outer end angle 2 and inner end angle 4, and the outer end angle 2 is acute angle or right angle, and the inner end angle 4 is obtuse angle, described outer Angle 2 is held to be equipped with the first lug boss 3, the back side of first lug boss 3 is formed with the first recessed portion.

Inner end angle 4 includes inner edge 70 and side 60, and the interior teeth portion 8 of the inner edge 70 and stator punching small pieces is perpendicular, institute Side 60 is stated as common to inner end angle 4, outer end angle 2.The outer end angle 2 includes side 60 and outside 50, the outside 50 and side Angle between side 60 is 90 °.Angle between inner edge 70 and side 60 is 110 °.

First lug boss 3, the first recessed portion are formed by stator punching small pieces are stamped.It is additionally provided in outer yoke portion 9 The back side of second lug boss 1, second lug boss 1 is formed with the second recessed portion.Second lug boss 1, the second recessed portion Also it is formed by stator punching small pieces are stamped.First recessed portion, the second recessed portion be respectively after stator punching small pieces are stamped, Due to the stator punching patch material at this be rushed out the first lug boss 3, the second lug boss 1 and formed recess.

The manufacturing process of the utility model is: then the enough stator punching small pieces of punching first rush these stators That is, as shown in Figure 2 first recessed portion of left side stator punching small pieces is fastened on by piece small pieces by 3 position of the first lug boss On first lug boss 3 of right side stator punching small pieces, straight stator punching small pieces row as shown in Figure 3 is formed.In a stator In the manufacture of iron core, the upper and lower multiple rows of stator punching small pieces row as shown in Figure 3 of parallel arranged.Two rows stator punching small pieces row Between, above the second recessed portion of stator punching small pieces of a row be fastened on the second lug boss of following stator punching small pieces row On 1.After the completion of the above arrangement, insulation framework is inserted into the notch between adjacent stators punching small pieces, then in insulation bone It is directly embedding around aluminium magnet wire on frame, a circle as shown in Figure 4 finally is made in straight stator punching small pieces row's circle of lower good line Shape band wound stator iron core, and the head and the tail junction firm welding that stator punching small pieces are arranged.

In same specification motor, stator core specification size is stator identical, that same size stator core uses Punching small pieces compare as shown in figure 5, bold portion is stator punching platelet morphology in the prior art in Fig. 5, and dotted portion is Stator punching platelet morphology in the present embodiment, notch size is after being unfolded between adjacent stators punching small pieces in the prior art 2a, notch size is 2b after being unfolded in the present embodiment between adjacent stators punching small pieces, by the first lug boss 3 in this present embodiment Position will be biased to the outside of stator core compared to correlation technique, so b is greater than in stator core after the expansion of stator punching small pieces a。

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without deviating from the technical principle of the utility model, several improvement and replacement can also be made, these change It also should be regarded as the protection scope of the utility model into replacement.

Claims (7)

1. a kind of intersect folded button hinge type electric machine with aluminium winding stator core, it is characterised in that: the stator core includes multiple mutual The stator punching small pieces of folded button, the stator punching small pieces include outer yoke portion (9) and interior teeth portion (8), a left side for the outer yoke portion (9) Right two ends include outer end angle (2) and inner end angle (4), and the outer end angle (2) is acute angle or right angle, the inner end angle It (4) is obtuse angle, the outer end angle (2) is equipped with the first lug boss (3), and the back side of first lug boss (3) is formed with first Recessed portion.

2. the folded button hinge type electric machine with aluminium winding stator core of a kind of intersection according to claim 1, it is characterised in that: inner end angle It (4) include inner edge (70) and side (60), the inner edge (70) and the interior teeth portion (8) of stator punching small pieces are perpendicular, the side Side (60) is inner end angle (4), common to outer end angle (2).

3. the folded button hinge type electric machine with aluminium winding stator core of a kind of intersection according to claim 1, it is characterised in that: inner edge (70) angle between side (60) is 110 °.

4. the folded button hinge type electric machine with aluminium winding stator core of a kind of intersection according to claim 3, it is characterised in that: described outer End angle (2) further includes outside (50), and the angle between the outside (50) and side (60) is 90 °.

A kind of intersect folded button hinge type electric machine with aluminium winding stator core 5. according to claim 1, it is characterised in that: described the One lug boss (3), the first recessed portion are formed by stator punching small pieces are stamped.

6. the folded button hinge type electric machine with aluminium winding stator core of a kind of intersection according to claim 1, it is characterised in that: outer yoke portion (9) it is additionally provided on the second lug boss (1), the back side of second lug boss (1) is formed with the second recessed portion.

A kind of intersect folded button hinge type electric machine with aluminium winding stator core 7. according to claim 6, it is characterised in that: described the Two lug bosses (1), the second recessed portion are also formed by stator punching small pieces are stamped.