CN204928382U - Stator punching sheet, stator core and motor - Google Patents

Abstract

The utility model provides a stator punch, which comprises an annular yoke and a plurality of teeth extending from the yoke along the radial direction of the stator punch. A punching slot is formed, the yoke and the tooth are connected in a detachable manner, the yoke is made of non-oriented silicon steel, and the tooth is made of oriented silicon steel. The utility model also relates to a stator iron core and a motor. The stator punching sheet, stator core and motor of the utility model design the stator punching sheet in the form of teeth and yoke separation, the yoke is made of non-oriented silicon steel, and the teeth are made of oriented silicon steel, which reduces the iron loss of the motor and improves The efficiency is improved, the vibration and noise of the motor with the stator stamping are reduced, and the performance of the motor is improved. A further breakthrough in motor performance when the performance of the existing motor has reached the bottleneck.

Description

Stator punching and stator core and motor

technical field

The utility model relates to the technical field of motors, in particular to a stator punch, a stator iron core and a motor.

Background technique

The existing stator cores are all made of non-oriented silicon steel. Compared with oriented silicon steel, non-oriented silicon steel has the disadvantages of low magnetic induction and high loss. The existing stator cores are all made of non-oriented silicon steel self-fastening punching and lamination As a result, the iron loss of the stator core accounts for a very large proportion of the motor loss, which has caused the bottleneck that the current motor performance cannot break through.

Utility model content

In view of the status quo of the existing technology, the purpose of this utility model is to provide a stator punch, stator core and motor. The stator punch is designed in the form of separated teeth and yokes. The yoke is made of non-oriented silicon steel, and the teeth are made of Made of oriented silicon steel, which reduces the iron loss of the motor, improves the efficiency and improves the performance of the motor. In order to achieve the above object, the technical scheme of the utility model is as follows:

A stator punching piece, comprising an annular yoke and a plurality of teeth extending from the yoke along the radial circumferential direction of the stator punching piece, a punch is formed between two adjacent teeth. The slots, the yoke and the teeth are detachably connected, the yoke is made of non-oriented silicon steel, and the teeth are made of oriented silicon steel.

In one embodiment, the yoke is provided with a connecting groove, and the tooth is provided with a protrusion, and the protrusion is placed in the connecting groove and coupled with the connecting groove.

In one of the embodiments, the yoke is provided with a plurality of first through holes.

In one of the embodiments, a second through hole is provided on the tooth portion.

In one embodiment, the number of the teeth is more than 9, and the more than 9 teeth are evenly arranged on the inner circumference of the yoke.

In one of the embodiments, the outer edge of the yoke is further provided with notches.

In one of the embodiments, the notch is a semicircular notch or the notch is a trapezoidal notch with a larger inner opening and a smaller outer opening.

In one embodiment, the notches are located at the outer edge of the yoke corresponding to the teeth, and each of the teeth corresponds to one notch.

The utility model also relates to a stator iron core, which is formed by axially stacking a plurality of stator punches, and the stator punches are the stator punches described in any one of the above technical solutions.

The utility model also relates to a motor, which includes a stator core, and the stator core is the stator core described in the above technical solution.

The beneficial effects of the utility model are:

The stator punching sheet, stator iron core and motor of the utility model design the stator punching sheet into a form in which the teeth and yokes are separated, the yoke is made of non-oriented silicon steel, and the teeth are made of oriented silicon steel, which reduces the iron loss of the motor and improves The efficiency is improved, the vibration and noise of the motor with the stator stamping are reduced, and the performance of the motor is improved. A further breakthrough in motor performance when the performance of the existing motor has reached the bottleneck.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of a stator punch of the present invention;

Fig. 2 is a schematic diagram of the yoke of the stator punch shown in Fig. 1;

Fig. 3 is a schematic diagram of the teeth of the stator punch shown in Fig. 1;

Fig. 4 is a schematic diagram of punching teeth in grain-oriented silicon steel strips.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the stator stamping, stator core and motor of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, not to limit the utility model.

Referring to FIGS. 1 to 4 , a stator punching sheet according to an embodiment of the present invention includes an annular yoke portion 100 and a plurality of teeth portions 200 extending from the yoke portion 100 along the radial circumferential direction of the stator punching sheet, A punching slot is formed between two adjacent tooth parts 200 . Wherein, the yoke portion 100 and the tooth portion 200 are detachably connected, the yoke portion 100 is made of non-oriented silicon steel, and the tooth portion 200 is made of oriented silicon steel.

The stator punching is designed in the form of teeth and yoke separation, the yoke 100 is made of non-oriented silicon steel, and the teeth 200 are made of oriented silicon steel, which reduces the iron loss of the motor and improves the efficiency, so that the motor with the stator punching Both vibration and noise are reduced, improving motor performance. A further breakthrough in motor performance when the performance of the existing motor has reached the bottleneck.

Wherein, the yoke 100 is provided with a connection groove 101, the tooth part 200 is provided with a protrusion 201, and the protrusion 201 is placed in the connection groove 101 and coupled with the connection groove 101, so that the tooth part 200 is assembled on the yoke 100 .

The connecting groove 101 can be trapezoidal, and the protruding portion 201 can also be trapezoidal corresponding to the connecting groove 101 . The protruding portion 201 is embedded in the connecting groove 101 , so that the detachable connection between the yoke portion 100 and the tooth portion 200 can be achieved.

A plurality of first through holes 102 are disposed on the yoke 100 . The first through hole 102 can be used as a self-fastening point between multiple overlapping yoke parts 100 , and can also be used as a heat dissipation channel. The first through hole 102 can be a round hole or a square hole.

A second through hole 202 is provided on the tooth part 200 , and the second through hole 202 is used for a self-fastening point between multiple overlapping tooth parts 200 . The second through hole 202 can be a round hole or a square hole.

As a possible implementation manner, the number of teeth 200 for each stator punch is more than 9, and more than 9 teeth 200 are evenly arranged on the inner circumference of the yoke 100 . In the figure, the number of teeth 200 provided on each punching piece 100 is 9, and the 9 teeth 200 are evenly arranged on the inner periphery of the yoke 100 .

As an implementation manner, a notch 103 is further provided on the outer edge of the yoke 100 . Preferably, the notch 103 is a semicircular notch or the notch 103 is a trapezoidal notch with a large inner opening and a smaller outer opening. The notch 103 is provided to facilitate the installation of the fixed yoke 100 , of course, the notch 103 can also be used as a ventilation channel. The notch 103 is located at the outer edge of the yoke 100 corresponding to the teeth 200 , and each tooth 200 corresponds to a notch 103 . In the figure, the number of teeth 200 on each stator punch is 9, and the number of notches 103 is also 9. Obviously, for the plurality of notches 103, some of the notches 103 can be semicircular notches, and some of the notches 103 can be trapezoidal notches. The semicircular notches and trapezoidal notches can also be arranged alternately.

The utility model also provides a stator iron core. The stator iron core is formed by axially stacking a plurality of stator punching sheets, and the stator punching sheet is the stator punching sheet of any one of the above technical solutions. As shown in Figure 1, the stator core is made in the form of tooth yoke separation. As shown in Figure 2, the yoke 100 is punched from non-oriented silicon steel. Since the magnetic force lines of the stator yoke need to be bent, the magnetic force lines in the oriented silicon steel are oriented (straight lines) and cannot be bent (cannot form an angled lines of magnetic force), so the yoke 100 cannot use grain-oriented silicon steel. In order to maximize the efficiency of the motor, the tooth portion 200 of the stator core is made of oriented silicon steel, which can greatly reduce loss, improve performance, and reduce magnetic field density. As shown in FIG. 4 , a plurality of tooth portions 200 are formed by punching an oriented silicon steel strip 300 (plate material) by self-clamping. The magnetic direction of the oriented silicon steel strip 300 is shown in the direction of the arrow in the figure. After the punching of the tooth part 200 is completed, the protruding part 201 of the tooth part 200 is aligned with the connecting groove 101 of the yoke part 100 of the stator core, and the protruding part 201 is coupled with the connecting groove 101 to complete the installation.

The utility model also provides a motor, including a stator core, and the stator core is the stator core of the above technical solution. Since this motor is prior art except for the stator core, details will not be described here.

The stator punches, stator iron cores and motors of the above embodiments are designed in the form of separated teeth and yokes. The yoke is made of non-oriented silicon steel, and the teeth are made of oriented silicon steel, which reduces the iron loss of the motor. The efficiency is improved, the vibration and noise of the motor with the stator stamping are reduced, and the performance of the motor is improved. A further breakthrough in motor performance when the performance of the existing motor has reached the bottleneck.

The above-mentioned embodiments only express several implementations of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (10)

1. A stator punch, characterized in that it comprises an annular yoke (100) and a plurality of teeth (200) extending from the yoke (100) along the radial circumferential direction of the stator punch ), forming a punching slot between two adjacent teeth (200), the yoke (100) is detachably connected to the teeth (200), and the yoke (100) adopts It is made of non-oriented silicon steel, and the tooth part (200) is made of oriented silicon steel. 2. The stator punching sheet according to claim 1, characterized in that, the yoke (100) is provided with a connecting groove (101), the tooth (200) is provided with a protrusion (201), and the The protrusion (201) is placed in the connection groove (101) and coupled with the connection groove (101). 3. The stator punching plate according to claim 1, characterized in that, a plurality of first through holes (102) are arranged on the yoke (100). 4. The stator punching plate according to claim 1, characterized in that, a second through hole (202) is provided on the tooth part (200). 5. The stator punching sheet according to any one of claims 1-4, characterized in that, the number of the teeth (200) is more than 9, and more than 9 teeth (200) are evenly arranged on the The inner circumference of the yoke (100). 6. The stator stamping according to any one of claims 1-4, characterized in that a notch (103) is further provided on the outer edge of the yoke (100). 7. The stator stamping according to claim 6, characterized in that, the notch (103) is a semicircular notch or the notch (103) is a trapezoidal notch with a large inner opening and a smaller outer opening. 8. The stator punching plate according to claim 6, characterized in that, the notch (103) is located at the outer edge of the yoke portion (100) corresponding to the tooth portion (200), each of the Each of the teeth (200) corresponds to one of the notches (103). 9. A stator core, the stator core is formed by axially laminating a plurality of stator punches, characterized in that, the stator punch is the stator punch described in any one of claims 1-8 . 10. A motor comprising a stator core, characterized in that the stator core is the stator core according to claim 9.