Heat dissipation type magnetic pole of motor

Abstract

The utility model provides a heat dissipation type magnetic pole of a motor, which comprises a pole body and a pole shoe which form a T shape, and the outer side surface of the pole body is provided with a recess and penetrates through first grooves at two ends; the first groove is parallel to the axial direction of the motor shell, and the first groove and the motor shell form a first air cavity. The first air cavity forms a heat dissipation channel, heat generated by the coil flows to the two ends of the motor along the first air cavity and is dissipated to the outside under the action of the fan, and the purpose of timely cooling is achieved. Compared with a traditional magnetic pole, the magnetic pole is simple in structure, convenient to machine and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of motor magnetic poles, in particular to a motor heat dissipation type magnetic pole. Background Art

[0002] The motor pole is generally T-shaped, consisting of a pole body and a pole shoe. The end of the pole body is connected to the motor housing, the coil is wound around the pole body, and the pole shoe is used for positioning.

[0003] When the motor is working, the coil will generate heat, and the coil is concentrated between the motor housing and the pole shoe. The space is small, and the heat dissipation will not be timely, causing the motor to burn out.

[0004] Therefore, Chinese patent CN204304631U discloses a magnetic pole, which is stacked with multiple silicon steel sheets to form a circular heat dissipation channel, and two symmetrical small protrusions are provided on the outer arc of the pole shoe. The above device has the following defects: 1. The structure is complex and the cost is high; 2. The heat dissipation channel is difficult to process and the cost is high. Utility Model Content

[0005] In order to solve the technical problems in the background technology, the utility model discloses a motor heat dissipation type magnetic pole.

[0006] The utility model provides a motor heat dissipation type magnetic pole, comprising a T-shaped pole body and a pole shoe, wherein the outer side surface of the pole body is provided with a first groove which is concave and passes through both ends;

[0007] The first groove is parallel to the axial direction of the motor housing and forms a first air cavity with the motor housing.

[0008] The first air cavity forms a heat dissipation channel, and the heat generated by the coil flows along the first air cavity to the two ends of the motor, and is dissipated to the outside under the action of the fan, so as to achieve the purpose of timely cooling. Compared with the traditional magnetic pole, the utility model is not only simple in structure, but also easy to process and low in cost.

[0009] To further improve the heat dissipation effect, specifically: a plurality of second grooves are provided on the outer side of the pole body; the second grooves are perpendicular to and connected to the first grooves; a third groove is provided on the side of the pole body which is perpendicular to the first grooves; one end of the third groove is connected to one end of the second groove, and the other end of the third groove extends to the pole shoe.

[0010] Furthermore, a raised convex strip is provided on the side of the pole shoe facing the pole body; the convex strip is parallel to the first groove and extends to both ends of the pole shoe. The convex strip is used to increase the heat dissipation area and improve the heat dissipation effect.

[0011] When the natural frequency of the pole shoe is consistent with that of the motor, resonance is likely to occur. Based on this, further improvements are as follows: a plurality of evenly distributed through holes are provided on the convex strip; the through holes penetrate both sides of the convex strip and are perpendicular to the convex strip; and the natural frequency of the magnetic pole is changed by enlarging the through holes.

[0012] There is a magnetic pole, which is provided with a mounting hole that runs through the inner and outer sides; if the first groove and the second groove are connected to the mounting hole, the mounting strength of the magnetic pole will be reduced. Based on this, a further improvement is that: the first groove and the second groove are both located outside the mounting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is the front view of the utility model;

[0016] Figure 3 yes Figure 2 Sectional view of AA in the middle;

[0017] Figure 4 yes Figure 2 Cross-sectional view of the middle BB;

[0018] In the figure: 1, pole body; 2, pole shoe; 3, first groove; 4, second groove; 5, third groove; 6, convex strip; 7, through hole; 8, mounting hole. DETAILED DESCRIPTION

[0019] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0020] like Figure 1 and 2 As shown, the utility model discloses a motor heat dissipation type magnetic pole, wherein a mounting hole 8 penetrating through two sides is arranged in the middle thereof for mounting and fixing the magnetic pole to the motor housing.

[0021] The utility model comprises a T-shaped pole body 1 and a pole shoe 2, wherein the outer side surface of the pole body 1 is an arc shape imitating the inner wall of the motor housing, and the inner side surface of the pole shoe 2 is an arc shape coaxial with the stator.

[0022] The outer side surface of the pole body 1 is provided with two first grooves 3 that penetrate through both ends and are symmetrical with respect to the mounting hole 8 ; the first grooves 3 are parallel to the axial direction of the motor housing and form a first air cavity with the motor housing.

[0023] like Figure 3As shown, a plurality of second grooves 4 are also provided on the outer side surface of the pole body 1; the second grooves 4 are perpendicular to and connected with the first grooves 3; a third groove 5 perpendicular to the first groove 3 is also provided on the side surface of the pole body 1; one end of the third groove 5 is connected with one end of the second groove 4, and the other end of the third groove 5 extends to the pole shoe 2.

[0024] The first groove 3, the second groove 4 and the third groove 5 form longitudinal and transverse air passages, and the heat generated by the coil will flow along the second groove 4 and the third groove 5 to the first groove 3, and finally flow to the two ends of the motor, and dissipate to the outside under the action of the fan, so as to achieve the purpose of timely cooling. Compared with the traditional magnetic pole, the utility model is not only simple in structure, but also easy to process and low in cost.

[0025] The first groove 3 and the second groove 4 are both arranged on the outside of the mounting hole 8 , so as not to affect the structural strength of the mounting hole 8 .

[0026] The outer arc surface of the pole shoe 2 and the side facing the pole body 1 are provided with raised ridges 6; two ridges 6 are provided and arranged symmetrically with respect to the pole body 1. The ridges 6 are parallel to the first grooves 3 and extend to both ends of the pole shoe 2. The ridges 6 are used to increase the heat dissipation area and improve the heat dissipation effect.

[0027] like Figure 4 As shown, a plurality of evenly distributed through holes 7 are provided on the convex strip 6; the through holes 7 penetrate both sides of the convex strip 6 and are perpendicular to the convex strip 6; by changing the size of the through holes 7, the natural frequency of the magnetic pole is changed, thereby avoiding resonance between the magnetic pole and the motor. The size of the through holes 7 can be changed by drilling, and the through holes 7 also play a positioning role in drilling, making the drilling operation simple and convenient.

[0028] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A heat dissipating magnetic pole of a motor, comprising a pole body (1) and a pole shoe (2) forming a T-shape, characterized in that: The outer side surface of the pole body (1) is provided with a first groove (3) which is concave and passes through both ends; The first groove (3) is parallel to the axis of the motor housing and forms a first air cavity with the motor housing.

2. The motor heat dissipation type magnetic pole according to claim 1, characterized in that: The outer side surface of the pole body (1) is also provided with a plurality of second grooves (4); The second groove (4) is perpendicular to and connected to the first groove (3).

3. The motor heat dissipation type magnetic pole according to claim 2, characterized in that: The side surface of the pole body (1) is also provided with a third groove (5) perpendicular to the first groove (3); One end of the third groove (5) is connected to one end of the second groove (4), and the other end of the third groove (5) extends to the pole shoe (2).

4. The motor heat dissipation type magnetic pole according to claim 1, characterized in that: The side of the pole shoe (2) facing the pole body (1) is provided with a raised convex strip (6); The convex strip (6) is parallel to the first groove (3) and extends to both ends of the pole shoe (2).

5. The motor heat dissipation type magnetic pole according to claim 4, characterized in that: The convex strip (6) is provided with a plurality of evenly distributed through holes (7); The through hole (7) passes through both sides of the convex strip (6) and is perpendicular to the convex strip (6); By enlarging the through hole (7), the natural frequency of the magnetic pole is changed.

6. The motor heat dissipation type magnetic pole according to claim 3, characterized in that: The motor heat dissipation type magnetic pole is provided with a mounting hole (8) penetrating the inner and outer sides; The first groove (3) and the second groove (4) are both located outside the mounting hole (8).

Images