CN202696303U - Rotor punching sheet, rotor iron core and motor - Google Patents

Abstract

The utility model provides a rotor punching sheet, a rotor iron core and a motor. The rotor punching sheet is provided with a circular yoke part and 33 teeth which extend from the yoke part to the circumferential direction along the radial direction of the rotor punching sheet, wherein a slot is formed between every two adjacent teeth; the rotor punching sheet is provided with a hollow inner circular hole; the diameter of the inner circular hole is 17 to 25mm; the diameter of the outer circle of the rotor punching sheet is 80 to 98mm; the notch of each slot is 0.9 to 1.1mm wide; the shoulder of each slot is 4.0 to 4.2mm wide and 2.6 to 2.8mm high; and each slot is 11.2 to 11.4mm deep. The total area of the slots of the rotor punching sheet is reduced, and the magnetic leakage factor is correspondingly reduced; furthermore, the density of a magnetic field of a motor is relatively uniform; and the motor can run steadily.

Description

Rotor punching, rotor core and motor

Technical field

The utility model relates to machine field, especially relates to a kind of rotor punching, the rotor core that is overrided to form by this rotor punching and the motor with this rotor core.

Background technology

Motor is widely used in the various electric equipments of industrial production and life, referring to Fig. 1, the end cap 11,12 that existing motor has housing 10 and is positioned at housing 10 two ends, housing 10 and end cap 11,12 surround a cavity, stator 15 and rotor 18 are installed in the cavity, and stator 15 has stator core 16 and is embedded into coil 17 on stator core 16.Rotor 18 is installed in the stator 15, and can be with respect to stator 15 rotations.Armature spindle 19 is installed in the rotor 18, and with rotor 18 interference fit, armature spindle 19 rotates under the drive of rotor 18, thus outside outputting power.

Stator core 16 is overrided to form by the identical stator punching of multi-disc shape, referring to Fig. 2, being stamped to form by silicon steel sheet of every a slice stator punching 20, and it is circular that stator punching 20 roughly is, it has the peripheral yoke section 21 that is positioned at, yoke section 21 is extended with a plurality of teeth 22 to the center of circle direction of stator punching 20, form groove 23 between two adjacent teeth 22, so the quantity of groove 23 equates with the quantity of tooth 22.

Rotor 18 has rotor core, rotor core also is to be overrided to form by the identical rotor punching of multi-disc shape, as shown in Figure 2, rotor punching 30 also is to have silicon steel sheet to be stamped to form, it has circular yoke section 31 and 33 teeth 32 that radially extend to circumferencial direction along rotor punching 30 from yoke section 31, form groove 33 between two adjacent teeth 32, so the quantity of groove 33 equating with the quantity of tooth 32, also is 33.Be provided with an interior circular hole 34 at the middle part of rotor punching 30.

Existing rotor punching 30 outside diameter φ A1 are between 98 millimeters to 106 millimeters, and the diameter phi B1 of interior circular hole 34 is between 17 millimeters to 25 millimeters.When motor moves, yoke section 21 place's magnetic densities of stator punching 20 are approximately 10000 Gausses, and the magnetic density at tooth 32 places of rotor punching 30 is approximately 33000 Gausses, Distribution of Magnetic Field during the motor operation on stator core and the rotor core is very inhomogeneous, the situation of easy vibration-generating when causing the motor operation, and produce larger noise, also cause the motor operational efficiency not high.In order to improve the motor operational efficiency, usually adopt the modes such as thickness of increase winding quantity or stator core, rotor core to improve magnetic loading, will cause like this production cost of motor significantly to improve.

And the gross area of the groove 33 of existing rotor punching 30 is larger, causes groove 33 utilances lower, and magnetic leakage factor is larger, causes the maximum moment of motor to descend, and the starting torque of motor is not enough, has influence on the work of motor.

Summary of the invention

Main purpose of the present utility model provides the less rotor punching of a kind of magnetic leakage factor.

Another purpose of the present utility model provides a kind of comparatively uniform rotor core of magnetic density that makes motor.

An again purpose of the present utility model provides the higher and less motor of generation noise of a kind of operational efficiency.

For realizing main purpose of the present utility model, the rotor punching that the utility model provides has circular yoke section and 33 teeth that radially extend to circumferencial direction along rotor punching from yoke section, form groove between two adjacent teeth, and rotor punching has the interior circular hole of hollow, the diameter of interior circular hole is between 17 millimeters to 25 millimeters, wherein, the outside diameter of rotor punching is between 80 millimeters to 98 millimeters, the width of rebate of groove is between 0.9 millimeter to 1.1 millimeters, the groove shoulder breadth degree of groove is between 4.0 millimeters to 4.2 millimeters, the groove shoulder height degree of groove is between 2.6 millimeters to 2.8 millimeters, and the degree of depth of groove is between 11.2 millimeters to 11.4 millimeters.

By such scheme as seen, the outside diameter of rotor punching reduces to some extent, and interior Circularhole diameter does not reduce, the area of the groove of rotor punching also reduces slightly simultaneously, and the gross area of groove is reduced, and the magnetic leakage factor of punching is corresponding reducing also, and the magnetic density of the yoke section of stator core and rotor core tooth section is comparatively even during operation, produce vibration when avoiding the motor operation, thereby reduce the noise that the motor operation produces, improve the motor reliability of operation.

A preferred scheme is that the bottom land width of groove is between 1.5 millimeters to 1.7 millimeters.Because the bottom land of groove is not an annulus, but straight line, the area of groove is reduced, and the gross area of groove is reduced.

For realizing another purpose of the present utility model, the rotor core that the utility model provides is overrided to form by the identical rotor punching of multi-disc shape, each rotor punching has circular yoke section and 33 teeth that radially extend to circumferencial direction along rotor punching from yoke section, form groove between two adjacent teeth, and rotor punching has the interior circular hole of hollow, the diameter of interior circular hole is between 17 millimeters to 25 millimeters, wherein, the outside diameter of rotor punching is between 80 millimeters to 98 millimeters, the width of rebate of groove is between 0.9 millimeter to 1.1 millimeters, the groove shoulder breadth degree of groove is between 4.0 millimeters to 4.2 millimeters, the groove shoulder height degree of groove is between 2.6 millimeters to 2.8 millimeters, and the degree of depth of groove is between 11.2 millimeters to 11.4 millimeters.

By such scheme as seen, the groove area of rotor punching reduces to some extent, and the groove gross area also reduces to some extent, and the magnetic leakage factor of rotor punching is reduced.In addition, magnetic density is comparatively even on the motor when operation stator core that uses above-mentioned rotor core and the rotor core, thus the noise and vibration when reducing motor and moving.

For realizing an again purpose of the present utility model, the motor that the utility model provides comprises stator and rotor, rotor has rotor core, rotor core is overrided to form by the identical rotor punching of multi-disc shape, each rotor punching has circular yoke section and 33 teeth that radially extend to circumferencial direction along rotor punching from yoke section, form groove between two adjacent teeth, and rotor punching has the interior circular hole of hollow, the diameter of interior circular hole is between 17 millimeters to 25 millimeters, wherein, the outside diameter of rotor punching is between 80 millimeters to 98 millimeters, the width of rebate of groove is between 0.9 millimeter to 1.1 millimeters, the groove shoulder breadth degree of groove is between 4.0 millimeters to 4.2 millimeters, and the groove shoulder height degree of groove is between 2.6 millimeters to 2.8 millimeters, and the degree of depth of groove is between 11.2 millimeters to 11.4 millimeters.

This shows that because the groove gross area of rotor punching reduces, magnetic leakage factor is corresponding reducing also, and the Distribution of Magnetic Field of stator core and rotor core is more even when making the motor operation, motor oscillating is less, moves more steadily, and efficient is higher, and noise is also less.

Description of drawings

Fig. 1 be existing motor partly cut open figure.

Fig. 2 is the structure chart that existing stator punching cooperates with rotor punching.

Fig. 3 is the structure chart that the utility model rotor punching embodiment cooperates with stator punching.

Fig. 4 is the structure enlarged drawing of the utility model rotor punching embodiment.

Fig. 5 is the partial enlarged drawing of the utility model rotor punching embodiment.

The utility model is described in further detail below in conjunction with drawings and Examples.

Embodiment

The end cap that the motor of present embodiment has housing and is positioned at the housing both sides, housing and end cap surround a cavity, and stator and rotor are installed in the cavity, and stator has stator core and is embedded into coil on stator core, rotor is installed in the stator, and can rotate with respect to stator.Armature spindle is installed in the rotor, and with the rotor interference fit, armature spindle rotates under the drive of rotor, and outside outputting power.

Stator core is overrided to form by the identical stator punching of multi-disc shape, and every a slice stator punching is stamped to form by silicon steel sheet.Referring to Fig. 3, it is circular that stator punching 40 roughly is, and 24 teeth 42 that it has yoke section 41 and extends to stator punching 40 center of circle directions from yoke section 41 form groove 43 between two adjacent teeth 42.And rotor punching 50 is positioned at the circular hole of stator punching 40.

Referring to Fig. 4, rotor punching 50 has circular yoke section 51, and is provided with 33 teeth 52 that radially extend to circumferencial direction along rotor core 50 from yoke section 51, form a groove 53 between two adjacent teeth 52, therefore, the quantity of groove 53 equates with the quantity of tooth 52, also is 33.

In the present embodiment, the outside diameter φ A of rotor punching 50 is between 80 millimeters to 98 millimeters, preferably, is 80 millimeters.Offer the interior circular hole 54 of hollow at the middle part of rotor punching 50, the diameter phi B of interior circular hole is between 17 millimeters to 25 millimeters, preferably, is 25 millimeters.Like this, compare with existing rotor punching, the rotor punching 50 outside diameter φ A of present embodiment reduce to some extent, but the diameter phi B of interior circular hole 54 do not reduce, and the magnetic leakage factor of rotor punching 50 is corresponding reducing also.

Referring to Fig. 5, the width of rebate C of the groove 53 of rotor punching 50 is between 0.9 millimeter to 1.1 millimeters, preferably, is 1.0 millimeters, and groove shoulder breadth degree D is between 4.0 millimeters to 4.2 millimeters, preferably, is 4.1 millimeters.And groove shoulder height degree E is between 2.6 millimeters to 2.8 millimeters, preferably, also be 2.68 millimeters, and the degree of depth F of groove 53 is between 11.2 millimeters to 11.4 millimeters, preferably, is 11.32 millimeters.In addition, the bottom land width G of groove 53 is between 1.5 millimeters to 1.7 millimeters, preferably, is 1.6 millimeters.

Like this, compare with existing rotor punching, the size of the groove 53 of the rotor punching 50 of present embodiment changes to some extent, and the yoke section 41 that makes stator punching 40 is more even with the magnetic density on the tooth 52 of rotor punching 50.Measure by the magnetic density to stator core and rotor core, the magnetic density of the yoke section 41 of stator core is 12500 Gausses when motor moves, and the magnetic density of the tooth 52 of rotor punching 50 also is 12500 Gausses.As seen, the magnetic density on the magnetic density of the yoke section 41 of stator punching 40 and the tooth 52 of rotor punching 50 is difficult for vibration-generating during the motor operation about equally, and noise is corresponding minimizing also, and the operation of motor is more steady, and reliability is higher.

It is emphasized that at last; the utility model is not limited to above-mentioned execution mode, changes also should be included in the protection range of the utility model claim in the size range of setting such as width of rebate, groove shoulder breadth degree, groove shoulder height degree, groove depth length and bottom land width.

Claims (10)

1. rotor punching comprises

Circular yoke section and from described yoke section 33 teeth that radially extend to circumferencial direction along described rotor punching, form groove between two adjacent teeth, and described rotor punching has the interior circular hole of hollow, and the diameter of described interior circular hole is between 17 millimeters to 25 millimeters;

It is characterized in that:

The outside diameter of described rotor punching is between 80 millimeters to 98 millimeters, the width of rebate of described groove is between 0.9 millimeter to 1.1 millimeters, the groove shoulder breadth degree of described groove is between 4.0 millimeters to 4.2 millimeters, the groove shoulder height degree of described groove is between 2.6 millimeters to 2.8 millimeters, and the degree of depth of described groove is between 11.2 millimeters to 11.4 millimeters.

2. rotor punching according to claim 1 is characterized in that:

The bottom land width of described groove is between 1.5 millimeters to 1.7 millimeters.

3. rotor punching according to claim 1 and 2 is characterized in that:

Described outside diameter is 80 millimeters, and the diameter of described interior circular hole is 25 millimeters, and described width of rebate is 1.0 millimeters, and described groove shoulder breadth degree is 4.1 millimeters, and described groove shoulder height degree is 2.68 millimeters, and the degree of depth of described groove is 11.32 millimeters.

4. rotor punching according to claim 2 is characterized in that:

Described bottom land width is 1.6 millimeters.

5. rotor core, the rotor punching identical by the multi-disc shape is overrided to form, each described rotor punching has circular yoke section and 33 teeth that radially extend to circumferencial direction along described rotor punching from described yoke section, form groove between two adjacent teeth, and described rotor punching has the interior circular hole of hollow, and the diameter of described interior circular hole is between 17 millimeters to 25 millimeters;

It is characterized in that:

The outside diameter of described rotor punching is between 80 millimeters to 98 millimeters, the width of rebate of described groove is between 0.9 millimeter to 1.1 millimeters, the groove shoulder breadth degree of described groove is between 4.0 millimeters to 4.2 millimeters, the groove shoulder height degree of described groove is between 2.6 millimeters to 2.8 millimeters, and the degree of depth of described groove is between 11.2 millimeters to 11.4 millimeters.

6. rotor core according to claim 5 is characterized in that:

The bottom land width of described groove is between 1.5 millimeters to 1.7 millimeters.

7. it is characterized in that according to claim 5 or 6 described rotor cores:

Described outside diameter is 80 millimeters, and the diameter of described interior circular hole is 25 millimeters, and described width of rebate is 1.0 millimeters, and described groove shoulder breadth degree is 4.1 millimeters, and described groove shoulder height degree is 2.68 millimeters, and the degree of depth of described groove is 11.32 millimeters.

8. motor comprises

Stator and rotor, described rotor has rotor core, described rotor core is overrided to form by the identical rotor punching of multi-disc shape, each described rotor punching has circular yoke section and 33 teeth that radially extend to circumferencial direction along described rotor punching from described yoke section, form groove between two adjacent teeth, and described rotor punching has the interior circular hole of hollow, and the diameter of described interior circular hole is between 17 millimeters to 25 millimeters;

It is characterized in that:

The outside diameter of described rotor punching is between 80 millimeters to 98 millimeters, the width of rebate of described groove is between 0.9 millimeter to 1.1 millimeters, the groove shoulder breadth degree of described groove is between 4.0 millimeters to 4.2 millimeters, the groove shoulder height degree of described groove is between 2.6 millimeters to 2.8 millimeters, and the degree of depth of described groove is between 11.2 millimeters to 11.4 millimeters.

9. motor according to claim 8 is characterized in that:

The bottom land width of described groove is between 1.5 millimeters to 1.7 millimeters.

10. it is characterized in that according to claim 8 or 9 described motors:

Described outside diameter is 80 millimeters, and the diameter of described interior circular hole is 25 millimeters, and described width of rebate is 1.0 millimeters, and described groove shoulder breadth degree is 4.1 millimeters, and described groove shoulder height degree is 2.68 millimeters, and the degree of depth of described groove is 11.32 millimeters.

Images