Two-antipode magnetic steel and one-pair carbon brush motor for short-time working mode

Abstract

The utility model relates to a two-antipode magnetic steel and one-pair carbon brush motor for a short-time working mode, and solves the technical problems of low production efficiency and high cost caused by the structure in the prior art. The motor comprises a casing, two carbon brushes, four magnetic steels and a rotor, wherein the two carbon brushes and the four magnetic steels are arranged on the inner wall of the casing; the included angle between the two carbon brushes is 90 degrees; the rotor is provided with an armature with a six-groove structure and six commutators, or is provided with a 12 * N groove structure and 12 * N sheets; six grooves of the armature and six commutators form a group; the armature part corresponding to each groove is marked as a-f, and the rising piece between the armature d and the armature e is taken as a starting point and marked as 1-6; the winding structure is as follows: a lead is led in from a riser 3 # and a riser 6 #, is wound along an armature d and an armature a and then is led out along a riser 1 #; a lead is led in along the riser 2 # and the riser 5 #, is wound along the armature c and the armature f and then is led out along the riser 6 #; a wire is led in along the rising piece 1 # and the rising piece 4 #, is wound along the armature b and the armature e, and then is led out along the rising piece 5 #.

Description

Technical Field

[0001] This utility model relates to brushed motors, specifically to a two-pair pole magnet and one-pair carbon brush motor for short-time working mode. Background Technology

[0002] In the initial product selection phase, brushed motors are often chosen for design. Due to the high torque and low speed requirements of some products, brushed motors are typically designed with a structure of two pairs of pole magnets, each pair of which is matched with two pairs of carbon brushes. For example... Figures 1-3 As shown, a six-slot brushed motor structure with two pairs of pole magnets and two pairs of carbon brushes includes a housing 01 and a rotor inside the housing 01. Four magnets 02 are evenly arranged circumferentially on the inner wall of the housing 01. The rotor is equipped with a six-slot armature 04, six commutator plates 05, and four carbon brushes 03. The riser plates of the commutator 05 are distributed correspondingly to the slots of the armature 04. The four carbon brushes 03 are divided into two pairs radially. The two carbon brushes 03 in each pair are connected by lead wires 06 to continuously contact each commutator plate 05 when the rotor rotates. In a counter-clockwise direction, the armature portion between each slot and the next slot is labeled af. Starting from the riser segment of commutator 05 between armatures f and a, the risers are labeled 1-6 in a counter-clockwise direction. Their winding structure is as follows: the wire is introduced along riser segment 1#, wound along armature a, and then led out along riser segment 2#; the wire is introduced along riser segment 2#, wound along armature b, and then led out along riser segment 3#; the wire is introduced along riser segment 3#, wound along armature c, and then led out along riser segment 4#; the wire is introduced along riser segment 4#, wound along armature d, and then led out along riser segment 5#; the wire is introduced along riser segment 5#, wound along armature e, and then led out along riser segment 6#; the wire is introduced along riser segment 6#, wound along armature f, and then led out along riser segment 1#.

[0003] This structure, with two pairs of pole magnets and two pairs of carbon brushes, is suitable for applications with low speeds and high output torque. However, its structure is complex, and the radially distributed carbon brushes require connection via lead wires, which poses challenges to manufacturing and assembly. Limited internal space also makes wiring difficult, resulting in lower efficiency and no significant cost advantage in mass production. Furthermore, in some specialized applications where brushed motors operate on a short-time duty cycle and long lifespan is not a requirement, the aforementioned cost issues become particularly pronounced. Utility Model Content

[0004] The purpose of this invention is to solve the technical problems of low production efficiency and high cost caused by the structure in the prior art, and to provide a two-pair pole magnet and one-pair carbon brush motor for short-time working mode.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A two-pair pole magnet and one-pair carbon brush motor for short-time operation includes a housing, carbon brushes and four magnets evenly arranged circumferentially on the inner wall of the housing, and a rotor coaxially arranged in the housing.

[0007] The rotor is equipped with an armature and a commutator. The armature has a 6-slot structure and the commutator has 6 segments, or the armature has a 12*N-slot structure and the commutator has 12*N segments, where N is a non-zero natural number.

[0008] Each commutator's riser segment is distributed in a corresponding slot of the armature;

[0009] Its special feature is:

[0010] There are two carbon brushes; the included angle between the two carbon brushes is 90°.

[0011] Each group consists of 6 consecutive armature slots and 6 corresponding commutator risers;

[0012] In each group, the armature portion between each slot and the next slot is labeled af in a clockwise direction. Starting from the riser between armatures d and e, each riser is labeled 1-6 in a clockwise direction. The winding structure is as follows: the wire is introduced by riser 3# and riser 6#, wound along armatures d and a in sequence, and then led out along riser 1#; the wire is introduced by riser 2# and riser 5#, wound along armatures c and f in sequence, and then led out along riser 6#; the wire is introduced by riser 1# and riser 4#, wound along armatures b and e in sequence, and then led out along riser 5#.

[0013] Furthermore, N can take the values ​​1, 2, 3, 4, or 5.

[0014] Furthermore, the winding structure is completed using an automatic winding machine.

[0015] The advantages of this utility model compared to the prior art are:

[0016] 1. This utility model provides a two-pair pole magnet and one-pair carbon brush motor for short-time working mode. According to the working conditions of short-time working mode of brushed motor, the winding method is changed, one pair of carbon brushes is removed, the wiring is simplified, and the winding process can be completed by automated equipment, thereby improving production efficiency and product consistency.

[0017] 2. This utility model provides a two-pair pole magnet and one-pair carbon brush motor for short-time working mode. Structurally, it eliminates one pair of carbon brushes and eliminates the need for lead wires between the carbon brushes, thereby reducing production costs and improving product competitiveness. Attached Figure Description

[0018] Figure 1This is a schematic diagram of an existing motor with two pairs of pole magnets and two pairs of carbon brushes.

[0019] Figure 2 This is a winding diagram of an existing motor with two pairs of pole magnets and two pairs of carbon brushes;

[0020] Figure 3 This is a schematic diagram of the winding connection of an existing motor with two pairs of pole magnets and two pairs of carbon brushes.

[0021] Figures 1 to 3 The reference numerals in the attached diagram are explained as follows: 01-Housing; 02-Magnet; 03-Carbon brush; 04-Armature; 05-Commutator; 06-Lead wire.

[0022] Figure 4 This is a schematic diagram of an embodiment of a two-pair pole magnet and one-pair carbon brush motor for short-time working mode according to the present invention;

[0023] Figure 5 This is a winding diagram illustrating an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the wire winding connection according to an embodiment of the present invention, wherein (A), (B), and (C) are exploded views of the wire winding connection.

[0025] Figures 4 to 6 The annotations in the attached figures are explained as follows:

[0026] 11-Housing; 12-Magnet; 13-Carbon brush; 14-Armature; 15-Commutator. Detailed Implementation

[0027] The specific technical solutions in the embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0028] Figures 4-6 This utility model provides a two-pair magnet and one-pair carbon brush motor for short-time operation. The motor has a six-slot, two-pair structure and mainly includes two pairs of pole magnets and one pair of carbon brushes. The radial directions of the carbon brushes are not in a straight line, and the carbon brushes are distributed at 90° angles.

[0029] The specific structure includes a housing 11 and a rotor inside the housing 11; four magnets 12 are evenly arranged circumferentially on the inner wall of the housing 11; the rotor is equipped with a 6-slot armature 14 and 6 commutators 15, the 6 slots of the commutator 15 and the 6 risers of the armature 14 are evenly distributed circumferentially; two carbon brushes 13 are arranged circumferentially on the rotor for continuous contact with each commutator 15 when the rotor rotates; the included angle between the two carbon brushes 13 is 90°; there are no lead wires between the two carbon brushes 13, but direct leads are made out of each brush.

[0030] The armature portion between each slot and the next slot is labeled af in a clockwise direction. Starting from the riser between armatures d and e, each riser is labeled 1-6 in a clockwise direction. The winding structure is as follows: the wire is introduced by riser 3# and riser 6#, and then wound along armature d and a in sequence before being led out along riser 1#; the wire is introduced by riser 2# and riser 5#, and then wound along armature c and f in sequence before being led out along riser 6#; the wire is introduced by riser 1# and riser 4#, and then wound along armature b and e in sequence before being led out along riser 5#.

[0031] Through comparison of test data, the performance of this structure motor is not significantly different from that of traditional motors. At the same time, the material cost is reduced by about 10%. In addition, the winding structure is completed by an automatic winding machine, which increases production efficiency by about 30%.

[0032] In other embodiments of this utility model, the structure is also applicable to 12-slot two-pair magnetic steel structures, 24-slot two-pair magnetic steel structures, 36-slot two-pair magnetic steel structures, 48-slot two-pair magnetic steel structures, 60-slot two-pair magnetic steel structures, etc. That is, brushed motors with two-pair magnetic steel structures increasing from 12 slots can eliminate one pair of carbon brushes.

[0033] The above content is only one embodiment of this utility model and is not a limitation on the scope of protection of this utility model. Any equivalent structural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A two-pole magnetic steel and one pair of carbon brush motor for short-time working mode, comprising a casing (11), a carbon brush (13) and four magnetic steels (12) which are evenly arranged on the inner wall of the casing in circumferential direction, and a rotor which is coaxially arranged in the casing (11); the rotor is provided with an armature (14) and a commutator (15), the armature (14) is of 6-slot structure and the commutator (15) is of 6 pieces, or the armature (14) is of 12*N-slot structure and the commutator (15) is of 12*N pieces, N being a non-zero natural number; the raised pieces of each piece of the commutator (15) are correspondingly distributed with the slots of the armature (14); characterized in that: the number of the carbon brush (13) is two; the included angle between the two carbon brushes (13) is 90°; each 6 continuous slots of the armature (14) and the corresponding 6 raised pieces of the commutator (15) are taken as a group; in each group, the part of the armature between each slot and the next slot in clockwise direction is marked as a-f respectively, and the raised piece between the armature d and the armature e is taken as the starting point, and each raised piece in clockwise direction is marked as 1-6 respectively; the wire structure is that the wire is introduced from the raised piece 3 and the raised piece 6, and is wound along the armature d and the armature a in turn and then is led out from the raised piece 1; the wire is introduced from the raised piece 2 and the raised piece 5, and is wound along the armature c and the armature f in turn and then is led out from the raised piece 6; the wire is introduced from the raised piece 1 and the raised piece 4, and is wound along the armature b and the armature e in turn and then is led out from the raised piece 5.

2. The two-pole magnetic steel and one pair of carbon brush motor for short-time working mode according to claim 1, characterized in that: the value of N is 1, 2, 3, 4 or 5.

3. The two-pole magnetic steel and one pair of carbon brush motor for short-time working mode according to claim 1, characterized in that: the wire structure is completed by an automatic winding machine. ​ ​ ​ ​ ​ ​ ​

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