Permanent magnet type claw-pole stepping motor

Abstract

The utility model relates to the technical field of stepping motors, and provides a permanent magnet type claw pole stepping motor, which comprises a motor assembly, the motor assembly comprises a shell, a rotating shaft, a mechanical seal box, a rotor, magnetic steel, a stator and a cover body, the cover body is fixed at one end of the shell, the rotating shaft is arranged in the shell, and the mechanical seal box is arranged in the shell. And rotors are fixed on the outer wall of the rotating shaft on the two sides of the magnetic steel. According to the stepping motor, the heat dissipation structure is arranged, the rotating shaft rotates to drive the fixing ring to rotate, the fixing ring rotates to drive the fan blades to rotate, the fan blades rotate to blow air to the stepping motor body through the preformed groove in one side of the fan box, and heat dissipation of the stepping motor body is accelerated; according to the permanent magnet type claw-pole stepping motor, the stepping motor body is prevented from being damaged due to high internal heat after long-time use, the function of accelerating heat dissipation is achieved, and the safety of the permanent magnet type claw-pole stepping motor in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stepping motors, in particular to a permanent magnet claw pole stepping motor. Background Art

[0002] The rapid development of industrial automation and robotics technology has made it impossible for traditional motors to meet production needs. Therefore, it is necessary to design breakthrough technologies and be innovative to design a high-precision, high-efficiency permanent magnet claw-pole stepper motor.

[0003] To this end, the patent with publication number CN203151355U discloses a permanent magnet claw pole stepper motor, which includes a stator assembly consisting of a claw pole stator core and a winding coil, a rotor assembly consisting of a rotating shaft, an annular magnetic steel and a magnetic ring frame, and a shaft sleeve, and a housing assembly consisting of upper and lower end covers and an aluminum shell with concave and convex teeth on the surface. The claw pole stator core includes upper and lower claw pole stators arranged on the inner surface of the upper and lower end covers and upper and lower middle claw pole stators arranged on the core frame, and the winding coil is arranged in the J-shaped slot of the middle claw pole stator. Due to the change in the structural form of the claw pole stator, rotor and housing, the gap between the claw poles is reduced, the leakage magnetic flux is reduced, the size of the magnetic steel is reduced, the rotational inertia of the rotor is reduced, and the material used for some components is reduced, and the technical effects of improving heat dissipation, reducing the power consumption of the rotor itself, improving energy utilization and the working efficiency and working reliability of the motor are brought about. The structure is reasonable and easy to manufacture, energy-saving, material-saving, low-cost, efficient and reliable, and has strong practicality;

[0004] Although the shell of the stepper motor mentioned above increases the heat dissipation area when in use, the heat dissipation efficiency is low. Therefore, it is necessary to design a permanent magnet claw pole stepper motor with a heat dissipation structure to improve the heat dissipation efficiency and speed up the heat dissipation speed. Utility Model Content

[0005] The utility model aims to provide a permanent magnet claw pole stepping motor, so as to solve the defect of low heat dissipation efficiency of the existing stepping motor.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a permanent magnet claw pole stepper motor, comprising a motor assembly;

[0007] The motor assembly includes a housing, a rotating shaft, a mechanical seal box, a rotor, a magnetic steel, a stator and a cover body. The cover body is fixed to one end of the housing, a rotating shaft is arranged inside the housing, rotors are fixed to the outer walls of the rotating shaft on both sides of the magnetic steel, and a mechanical seal box is arranged on the outer side of the rotating shaft at one end of the rotor away from the magnetic steel;

[0008] A mounting structure is fixed at the bottom end of the shell;

[0009] A heat dissipation structure is installed on the outer wall of the cover body, and the heat dissipation structure includes a fan box, a fixing ring and fan blades. The fan box is fixed on the outer wall of the cover body, a fixing ring is fixed on the outer wall of the rotating shaft inside the fan box, and fan blades are evenly fixed on the outer wall of the fixing ring.

[0010] Preferably, a magnetic steel is fixed on the outer wall of the rotating shaft inside the shell, and a stator is arranged on the outer side of the rotor.

[0011] Preferably, the central axis of the rotating shaft and the central axis of the mechanical seal box are colinear, and the side of the mechanical seal box away from the magnetic steel is fixedly connected to the inner side wall of the shell and the inner side wall of the cover respectively.

[0012] Preferably, the rotor is symmetrically distributed on both sides of the magnetic steel, and the central axis of the rotor and the central axis of the magnetic steel are collinear.

[0013] Preferably, the mounting structure includes a support plate, a base plate, a connecting plate and bolts, the support plates are fixed to both sides of the bottom end of the shell, the bottom ends of the support plates are fixed with base plates, connecting plates are arranged between adjacent support plates, and bolts are evenly penetrated inside the support plates.

[0014] Preferably, the bottom end of the connecting plate is fixedly connected to the top end of the bottom plate, and one end of the bolt extends into the interior of the connecting plate.

[0015] Preferably, ventilation slots are evenly opened on both sides of the interior of the fan box, and the fan blades are evenly distributed on the outer side wall of the fixing ring.

[0016] The utility model provides a permanent magnet claw pole stepper motor, which has the advantages of:

[0017] By providing a heat dissipation structure, when the rotating shaft rotates, the fixed ring will be driven to rotate, and the rotation of the fixed ring will drive the fan blades to rotate. The rotation of the fan blades can blow air to the stepper motor body through the reserved groove on one side of the fan box, thereby accelerating the heat dissipation of the stepper motor body and preventing the stepper motor body from being damaged due to high internal heat after long-term use. The device has the function of accelerating heat dissipation, and improves the safety of the permanent magnet claw pole stepper motor when in use.

[0018] By providing a mounting structure, the shell is fixed to the top of the support plate, and the support plate will lift the shell, reducing the contact area between the bottom end of the shell and the base plate, increasing the air circulation rate under the shell, and making heat dissipation more convenient. The support plate and the connecting plate are fixed to each other by bolts, so that the shell can be firmly mounted on the top of the base plate, thereby realizing the functions of stable installation and convenient heat dissipation of the device, and improving the safety of the permanent magnet claw pole stepper motor when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0021] Figure 3 It is a side view structural schematic diagram of the utility model;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the main cross-section of the utility model;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the utility model in a top view.

[0024] Explanation of the reference numerals in the figure: 1. Motor assembly; 101. Housing; 102. Rotating shaft; 103. Mechanical seal box; 104. Rotor; 105. Magnet; 106. Stator; 107. Cover; 2. Mounting structure; 201. Support plate; 202. Bottom plate; 203. Connecting plate; 204. Bolt; 3. Heat dissipation structure; 301. Fan box; 302. Fixing ring; 303. Fan blade. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 5 The utility model provides a permanent magnet claw pole stepper motor, which includes a motor component 1.

[0027] Reference Figure 1-Figure 5The motor assembly 1 includes a housing 101, a rotating shaft 102, a mechanical seal box 103, a rotor 104, a magnetic steel 105, a stator 106 and a cover body 107. The cover body 107 is fixed at one end of the housing 101, and the housing 101 is provided with a rotating shaft 102. The rotor 104 is fixed to the outer wall of the rotating shaft 102 on both sides of the magnetic steel 105. The mechanical seal box 103 is provided on the outer side of the rotating shaft 102 at one end of the rotor 104 away from the magnetic steel 105. The magnetic steel 105 is fixed to the outer wall of the rotating shaft 102 in the housing 101, and the stator 106 is provided on the outer side of the rotor 104. The central axis of the rotating shaft 102 and the central axis of the mechanical seal box 103 are collinear. The side of the mechanical sealing box 103 away from the magnetic steel 105 is fixedly connected to the inner wall of the shell 101 and the inner wall of the cover body 107 respectively. The rotor 104 is symmetrically distributed on both sides of the magnetic steel 105. The central axis of the rotor 104 and the central axis of the magnetic steel 105 are collinear. A mounting structure 2 is fixed to the bottom end of the shell 101. The mounting structure 2 includes a support plate 201, a bottom plate 202, a connecting plate 203 and a bolt 204. The support plate 201 is fixed to both sides of the bottom end of the shell 101. The bottom end of the support plate 201 is fixed with the bottom plate 202, and the bottom end of the connecting plate 203 is fixedly connected to the top of the bottom plate 202. One end of the bolt 204 extends to the inside of the connecting plate 203.

[0028] The shell 101 is fixed to the top of the support plate 201. The support plate 201 will lift the shell 101, reducing the contact area between the bottom of the shell 101 and the base plate 202, increasing the air circulation rate under the shell 101, and making heat dissipation more convenient. The support plate 201 and the connecting plate 203 are fixed to each other by bolts 204, so that the shell 101 can be firmly installed on the top of the base plate 202.

[0029] Reference Figure 1-Figure 5 A heat dissipation structure 3 is installed on the outer wall of the cover body 107, and the heat dissipation structure 3 includes a fan box 301, a fixing ring 302 and fan blades 303. The fan box 301 is fixed on the outer wall of the cover body 107, and a fixing ring 302 is fixed on the outer wall of the rotating shaft 102 inside the fan box 301. The fan blades 303 are evenly fixed on the outer wall of the fixing ring 302. Ventilation grooves are evenly opened on both sides of the inside of the fan box 301, and the fan blades 303 are evenly distributed on the outer wall of the fixing ring 302.

[0030] When the rotating shaft 102 rotates, it will drive the fixing ring 302 to rotate. The rotation of the fixing ring 302 will drive the fan blades 303 to rotate. The rotation of the fan blades 303 can blow air to the stepper motor body through the reserved groove on one side of the fan box 301, thereby accelerating the heat dissipation of the stepper motor body and preventing the stepper motor body from being damaged due to high internal heat after long-term use.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A permanent magnet claw pole stepper motor, comprising a motor assembly (1); Features: The motor assembly (1) comprises a housing (101), a rotating shaft (102), a mechanical seal box (103), a rotor (104), a magnetic steel (105), a stator (106) and a cover body (107); the cover body (107) is fixed to one end of the housing (101); a rotating shaft (102) is arranged inside the housing (101); rotors (104) are fixed to the outer walls of the rotating shaft (102) on both sides of the magnetic steel (105); and a mechanical seal box (103) is arranged on the outer side of the rotating shaft (102) at one end of the rotor (104) away from the magnetic steel (105); A mounting structure (2) is fixed to the bottom end of the housing (101); A heat dissipation structure (3) is installed on the outer wall of the cover body (107), and the heat dissipation structure (3) comprises a fan box (301), a fixing ring (302) and fan blades (303). The fan box (301) is fixed on the outer wall of the cover body (107), a fixing ring (302) is fixed on the outer wall of the rotating shaft (102) inside the fan box (301), and fan blades (303) are evenly fixed on the outer wall of the fixing ring (302).

2. A permanent magnet claw pole stepper motor according to claim 1, characterized in that: A magnetic steel (105) is fixed on the outer wall of the rotating shaft (102) inside the housing (101), and a stator (106) is arranged on the outer side of the rotor (104).

3. A permanent magnet claw pole stepper motor according to claim 1, characterized in that: The central axis of the rotating shaft (102) and the central axis of the mechanical seal box (103) are collinear, and the side of the mechanical seal box (103) away from the magnetic steel (105) is fixedly connected to the inner wall of the shell (101) and the inner wall of the cover (107) respectively.

4. A permanent magnet claw pole stepper motor according to claim 1, characterized in that: The rotor (104) is symmetrically distributed on both sides of the magnetic steel (105), and the central axis of the rotor (104) and the central axis of the magnetic steel (105) are collinear.

5. The permanent magnet claw pole stepper motor according to claim 1, characterized in that: The mounting structure (2) comprises a support plate (201), a bottom plate (202), a connecting plate (203) and bolts (204); the support plate (201) is fixed to two sides of the bottom end of the shell (101); the bottom end of each support plate (201) is fixed with a bottom plate (202); connecting plates (203) are arranged between adjacent support plates (201); and bolts (204) are uniformly passed through the interior of the support plate (201).

6. A permanent magnet claw pole stepper motor according to claim 5, characterized in that: The bottom end of the connecting plate (203) is fixedly connected to the top end of the bottom plate (202), and one end of the bolt (204) extends into the interior of the connecting plate (203).

7. A permanent magnet claw pole stepper motor according to claim 1, characterized in that: Ventilation slots are evenly arranged on both sides of the interior of the fan box (301), and the fan blades (303) are evenly spaced on the outer wall of the fixing ring (302).

Images