Direct current motor rotor structure capable of reducing magnetic circuit interference

Abstract

The utility model discloses a direct current motor rotor structure capable of reducing magnetic circuit interference, and relates to the technical field of motor rotor magnetic circuit interference reduction. The edge of the rotor core is provided with a plurality of placing grooves. The included angle between every two adjacent containing grooves is 15 degrees. The two ends of the rotor iron core are detachably provided with rotor punching sheets through rivets. A plurality of rivets are arranged; a placement groove is formed in a position, corresponding to the rotor iron core, of the rotor punching sheet; magnetic steel is embedded in the placing groove; when in use, the magnetic steel is embedded in the placing groove on the rotor iron core, the magnetic steel is fixed under the action of the converter and through the rotor punching sheets at the two ends of the rotor iron core, the rotor punching sheets are fixedly installed with the rotor iron core through rivets, and the rotor iron core rotates under the action of the converter.

Description

Technical Field

[0001] The utility model relates to the technical field of reducing magnetic circuit interference of motor rotors, in particular to a DC motor rotor structure that reduces magnetic circuit interference. Background Art

[0002] The DC motor rotor is an important component of the motor and plays a key role in its operation. It typically consists of an iron core, windings, and a commutator. The iron core is typically made of laminated silicon steel sheets to reduce eddy current losses. The windings generate electromagnetic torque in the magnetic field through current, driving the rotor to rotate. The commutator's function is to continuously change the direction of the current in the windings during rotor rotation to maintain the direction of the electromagnetic torque, thereby achieving continuous rotation of the rotor. During the operation of a DC motor, the rotor's speed and torque depend on multiple factors, such as input voltage, excitation current, armature resistance, and load size.

[0003] During the operation of conventional DC motor rotors, magnetic circuit interference can cause uneven magnetic field distribution, resulting in overly dense or sparse magnetic lines in some areas of the rotor during rotation. This can lead to uneven current distribution in the rotor windings, resulting in additional resistance loss (also known as copper loss). In the case of severe magnetic circuit interference, the current in certain parts of the rotor windings may increase significantly, causing severe heating in these parts and energy dissipation as heat, reducing the efficiency of the motor. If the magnetic circuit interference is large, the torque output will fluctuate, affecting the smooth operation of the motor-driven equipment.

[0004] Now, when the traditional DC motor rotor is working and the magnet is rotating, the magnetic circuit is affected by the magnet, which may cause uneven current distribution in the rotor winding. This makes it impossible to effectively ensure the continuous rotation of the rotor. When the current is uneven, it may cause further resistance loss in the rotor, reducing the working efficiency of the rotor-driven motor. Utility Model Content

[0005] The purpose of the present utility model is to provide a DC motor rotor structure that reduces magnetic circuit interference. In this structure, the magnets are embedded in placement slots, and the placement slots are equidistantly arranged on the rotor core. In this way, under the action of the commutator, the magnets in the placement slots can effectively cut the magnetic flux lines at a uniform speed. The magnets in the placement slots are arranged in positive and negative intervals, which effectively reduces the interference with the magnetic circuit during the rotation of the rotor, effectively ensures the smooth rotation of the rotor, and thus effectively ensures the working efficiency of the rotor driving the motor; so as to solve the problems of the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A DC motor rotor structure for reducing magnetic circuit interference includes a rotor core; a plurality of placement slots are provided at the edge of the rotor core; the angle between the plurality of placement slots is 15°; rotor punchings are detachably mounted on both ends of the rotor core via rivets; a plurality of rivets are provided;

[0008] The rotor punchings are provided with placement grooves at positions corresponding to the rotor core; magnetic steel is embedded in the placement grooves;

[0009] As a further technical solution of the present invention, the two ends of the magnetic steel are inclined and chamfered; the inclination angle is 45 degrees; the edges of the magnetic steel are rounded, and the rounded angle is 0.3 degrees. In this way, when the rotor core rotates, the magnetic circuit between the magnetic steels is smoother, thereby effectively reducing the magnetic circuit interference of the electronic magnetic circuit;

[0010] As a further technical solution of the present invention, the thickness of the magnetic steel coating layer is 15 microns; the coating layer can provide good corrosion protection for the magnetic steel and extend its service life;

[0011] As a further technical solution of the present invention, the thickness of the rotor punching sheet is 0.2 mm, which effectively reduces the resistance loss of the rotor winding during operation;

[0012] As a further technical solution of the present invention, the magnetic steels in the plurality of placement slots are arranged in a forward and reverse interval manner;

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model, when in use, is embedded in the placement groove on the rotor core, and the magnet is realized under the action of the converter. The magnet is fixed by the rotor punchings at both ends of the rotor core. The rotor punchings are fixed to the rotor core by rivets, and the rotor core is rotated under the action of the converter.

[0015] In the present invention, the thickness of the rotor punching sheet is 0.2 mm, which reduces the resistance loss of the rotor during operation. The surface of the magnetic steel is provided with a coating layer, which effectively ensures the corrosion resistance of the magnetic steel and greatly improves the use efficiency of the magnetic steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the present utility model.

[0017] Figure 2 This utility model Figure 1 side view.

[0018] Figure 3 This utility model Figure 1 Schematic diagram of the splitting.

[0019] Figure 4 This utility model Figure 3 Side view of the magnet.

[0020] In the figure: 1-rotor core, 2-rotor punching, 3-rivet, 4-magnet, 5-placement slot. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 In an embodiment of the present invention, a DC motor rotor structure for reducing magnetic circuit interference includes a rotor core 1; a plurality of placement slots 5 are provided at the edge of the rotor core 1; the angle between the plurality of placement slots 5 is 15°; rotor punchings 2 are detachably mounted on both ends of the rotor core 1 through rivets 3; a plurality of rivets 3 are provided;

[0023] A placement slot 5 is provided at a position corresponding to the rotor punching 2 and the rotor core 1; a magnetic steel 4 is embedded in the placement slot 5;

[0024] The two ends of the magnetic steel 4 are chamfered; the inclination angle is 45 degrees; the edges of the magnetic steel 4 are rounded, and the rounded angle is 0.3 degrees;

[0025] By adopting the above technical solution, when in use, the magnet 4 is embedded in the placement groove 5 on the rotor core 1, and the magnet 4 is fixed by the rotor punchings 2 at both ends of the rotor core 1. The rotor punchings 2 are fixed to the rotor core 1 by rivets 3, and the rotor core 1 is rotated under the action of the converter.

[0026] In this embodiment, the coating thickness of the magnetic steel 4 is 15 microns;

[0027] The thickness of the rotor punching 2 is 0.2 mm;

[0028] The magnetic steels 4 in the plurality of placement slots 5 are arranged in a forward and reverse interval manner;

[0029] By adopting the above technical solution, the thickness of the rotor punching 2 is 0.2 mm, which reduces the resistance loss of the rotor during operation. The surface of the magnetic steel 4 is provided with a coating layer, which effectively ensures the corrosion resistance of the magnetic steel and greatly improves the use efficiency of the magnetic steel 4.

[0030] The working principle of the utility model is as follows: when in use, the magnet 4 is embedded in the placement groove 5 on the rotor core 1, and the magnet 4 is fixed by the rotor punchings 2 at both ends of the rotor core 1. The rotor punchings 2 are fixed to the rotor core 1 by rivets 3, and the rotor core 1 is rotated under the action of the converter;

[0031] The thickness of the rotor punching 2 is 0.2 mm, which reduces the resistance loss of the rotor during operation. The surface of the magnetic steel 4 is provided with a coating layer, which effectively ensures the corrosion resistance of the magnetic steel and greatly improves the use efficiency of the magnetic steel 4.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A DC motor rotor structure for reducing magnetic circuit interference, characterized by: It comprises a rotor core (1); a plurality of placement grooves (5) are provided at the edge of the rotor core (1); the angle between the plurality of placement grooves (5) is 15°; rotor punchings (2) are detachably mounted on both ends of the rotor core (1) via rivets (3); a plurality of rivets (3) are provided; A placement groove (5) is provided at a position corresponding to the rotor punching sheet (2) and the rotor core (1); and a magnetic steel (4) is embedded in the placement groove (5).

2. The DC motor rotor structure for reducing magnetic circuit interference according to claim 1, characterized in that: The two ends of the magnetic steel (4) are chamfered; the inclination angle is 45°; each edge of the magnetic steel (4) is rounded, and the rounded angle is 0.3°.

3. The DC motor rotor structure for reducing magnetic circuit interference according to claim 2, characterized in that: The coating thickness of the magnetic steel (4) is 15 microns.

4. The DC motor rotor structure for reducing magnetic circuit interference according to claim 1, characterized in that: The thickness of the rotor punching sheet (2) is 0.2 mm.

5. The DC motor rotor structure for reducing magnetic circuit interference according to claim 1, characterized in that: The magnetic steels (4) in the plurality of placement slots (5) are arranged in a forward and reverse interval manner.

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