Bending the armature coil

Abstract

The present invention discloses a curved armature coil comprising an upper portion and a lower portion, the upper portion and the lower portion being symmetrical. The upper portion comprises a first section, a fifth section, a ninth section, and a connecting section, and the upper portion and the lower portion are connected together via the ends of the connecting section. The upper portion further comprises three curved structures, with the first section connected to one end of the fifth section, the other end of the fifth section to the ninth section, and the other end of the fifth section to the connecting section, respectively, via curved structures. Each curved structure has at least two bending angles and three bending sections. The present invention employs a curved armature coil inlay, i.e., a curved structure at the end of the armature coil, with the curved sections aligned vertically and naturally forming a radial ventilation duct, which acts as a small fan. This increases ventilation and heat dissipation during motor operation, thereby improving the motor's heat dissipation capacity and thereby enhancing the motor's designed heating parameters.

Description

Technical Field

[0001] The invention relates to an armature coil, in particular to a bent armature coil, and belongs to the field of motor manufacturing. Background Art

[0002] As users' requirements for motors become higher, it is urgent to improve the performance parameters of existing motors to meet user requirements. Among them, the motor heating parameter is an important one. The conventionally used is a straight armature coil with a straight structure at the end, such as Figure 1 、 Figure 2 As shown, the straight armature coil is a symmetrical structure. Figure 1 The upper and lower positions of the figure are symmetrical. The upper half of the straight armature coil includes the first segment 1, the first straight segment 14, the fifth segment 5, the second straight segment 15, and the ninth segment 9, which are connected in sequence. The fifth segment 5 is forked at the position where it connects to the second straight segment 15, and is also connected to one end of the third straight segment 16. The other end of the third straight segment 16 is connected to one end of the connecting segment 13. The other end of the connecting segment 13 is connected to the third straight segment 16 of the lower half, which is used to connect the symmetrical upper and lower halves. Figure 3 、 Figure 4 As shown, the third straight section 16, the first straight section 14, and the second straight section 15 between any two adjacent coils are arranged together, and no effective gap can be formed. As a result, after the wires are embedded, the upper and lower layers of the coils are cross-stacked and no ventilation duct is formed. The front and rear ends of the armature coils have poor heat dissipation, which limits the increase in motor power. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: how to improve the heat dissipation effect of the front and rear ends of the armature coil.

[0004] In order to solve the above technical problems, the technical solution of the present invention is to provide a curved armature coil, comprising an upper half and a lower half, the upper half and the lower half being symmetrical with each other, the upper half comprising a first segment, a fifth segment, a ninth segment, and a connecting segment, the upper half and the lower half being connected together through the two ends of the connecting segment, characterized in that the upper half also includes three curved structures, the first segment and one end of the fifth segment, the other end of the fifth segment and the ninth segment, and the other end of the fifth segment and the connecting segment are respectively connected by curved structures; each curved structure is provided with at least two bending angles and three bending segments.

[0005] Preferably, each of the bending structures comprises 2n bending angles and 2n+1 bending segments, wherein n is a positive integer.

[0006] Preferably, a bending structure is formed between any two sections.

[0007] Preferably, when any two adjacent coils are arranged together, the largest ventilation duct is formed between the bent sections in the bent structures of the two coils that are parallel to the fifth section.

[0008] The present invention adopts a curved armature coil inlay wire, that is, the end of the armature coil is a curved structure, and the curved part is aligned up and down to naturally form a radial ventilation duct, which is equivalent to a small fan. When the motor is running, it plays a role in increasing ventilation and heat dissipation, thereby improving the heat dissipation capacity of the motor, thereby improving the designed heating parameters of the motor.

[0009] By improving the heating parameters of the motor, the motor volume can be reduced or the motor power can be increased under other same conditions, thus improving the market competitiveness of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a plan view of the straight armature coil structure;

[0011] Figure 2 It is a three-dimensional diagram of the straight armature coil structure;

[0012] Figure 3 This is the effect diagram of the straight armature coil;

[0013] Figure 4 This is the effect diagram of the straight armature coil tightly fitting the outside of the core;

[0014] Figure 5 is a plan view of a bent armature coil;

[0015] Figure 6 A perspective view of a bent armature coil;

[0016] Figure 7 This is the effect diagram of the bent armature coil;

[0017] Figure 8 This is the effect of the bent armature coil fitting tightly to the outside of the iron core. DETAILED DESCRIPTION

[0018] To make the present invention more clearly understood, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0019] The present invention provides a curved armature coil, such as Figure 5 、 Figure 6 As shown, it is a symmetrical structure. Figure 5The upper and lower parts of the figure are symmetrical, with the axis of symmetry as the dividing line. The part above the axis of symmetry is the upper half, and the part below the axis of symmetry is the lower half. The upper and lower parts each include a first segment 1, a second segment 2, a third segment 3, a fourth segment 4, a fifth segment 5, a sixth segment 6, a seventh segment 7, an eighth segment 8, a ninth segment 9, a tenth segment 10, an eleventh segment 11, a twelfth segment 12, and a connecting segment 13. The first segment 1, the second segment 2, the third segment 3, the fourth segment 4, the fifth segment 5, the sixth segment 6, the seventh segment 7, the eighth segment 8, and the ninth segment 9 are connected in sequence. The fifth segment 5 forks where it connects to the sixth segment 6 and is also connected to one end of the tenth segment 10. The other end of the tenth segment 10 is connected in sequence to the eleventh segment 11, the twelfth segment 12, and the connecting segment 13. The two ends of the connecting segment 13 are respectively connected to the twelfth segment 12 in the upper and lower parts, thus connecting the symmetrical upper and lower parts. A bending structure is formed between any two segments.

[0020] Among them, the second section 2, the fourth section 4, the sixth section 6, and the eighth section 8 are on the plane ( Figure 5 The projections on the paper where they are located are parallel to each other.

[0021] like Figure 7 、 Figure 8 As shown, when any two adjacent coils are arranged together, the second segment 2, the fourth segment 4, the sixth segment 6, the eighth segment 8, the tenth segment 10, and the twelfth segment 12 are tightly attached to each other, and an effective gap, i.e., a ventilation duct A, is formed between two adjacent third segments 3, seventh segments 7, and eleventh segments 11.

[0022] In order to ensure that the ventilation duct A is as large as possible, the third section 3, the seventh section 7, and the eleventh section 11 are arranged on the plane ( Figure 5 The projections on the paper where they are located are parallel to each other.

[0023] In this embodiment, the curved armature coil has a nine-bend structure, with the nine bends aligned vertically and naturally forming a radial ventilation channel A, which acts like a small fan and increases ventilation and heat dissipation during motor operation, thereby improving the motor's heat dissipation capacity. A single curved armature coil of the present invention is an integrated structure.

[0024] The present invention replaces the third straight section 16, first straight section 14, and second straight section 15 of the existing coil with curved sections formed by connecting multiple straight sections with bends, thereby creating an effective gap. In addition to the aforementioned nine-bend structure (i.e., comprising three bend structures, each with at least two bend angles and three bend sections), the number of ventilation channels A can also be increased by adding two bend angles and two bend sections (i.e., coils) at each existing straight section.

Claims

1. A curved armature coil, comprising an upper half and a lower half, the upper half and the lower half being symmetrical to each other, the upper half comprising a first segment (1), a fifth segment (5), a ninth segment (9), and a connecting segment (13), the upper half and the lower half being connected together via two ends of the connecting segment (13), characterized in that: The upper part further comprises three curved structures, wherein the first section (1) and one end of the fifth section (5), the other end of the fifth section (5) and the ninth section (9), and the other end of the fifth section (5) and the connecting section (13) are respectively connected by curved structures; each curved structure has at least two bending angles and three bending sections; Each of the bending structures comprises 2n bending angles and 2n+1 bending segments; wherein n is a positive integer; a bending structure is formed between any two segments; when any two adjacent coils are arranged together, the largest ventilation duct (A) is formed between the bending segments in the bending structures of the two coils that are parallel to the fifth segment (5).

Images