Multi-layer multi-pole limited angle torque motor stator winding winding connection method

Abstract

The invention relates to a winding connection method of a multilayer multi-pole limited angle torque motor stator winding. A stator iron core, a winding coil, a positioning block, a wire passing plate, a lead-out wire plate, a pre-embedded wire and a wire passing plate are included. Wherein the positioning blocks are uniformly distributed and embedded on the annular stator iron core, a winding area is formed between every two adjacent positioning blocks, the wire passing plate and the leading-out wire plate are respectively fixed on the positioning blocks, the pre-embedded wire is tightly attached to the surface of the stator iron core and is respectively connected with the wire passing plate and the leading-out wire plate, and the winding coil is wound from the head end S in the winding area. And returning to the W end of the tail end to finish winding. According to the invention, a winding method of uniformly distributing the multi-pole windings and combining serial connection and parallel connection is adopted, and the capability of outputting different resistors by the same number of windings can be realized by combining the wire-passing pre-embedding and the wire-passing plate. And more winding wire turns are wound in a limited space, so that the torque coefficient of the motor is obviously improved, and the output torque of the motor is further improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of torque motors, and particularly relates to a method for winding and connecting the stator windings of a multi-layer and multi-pole limited-rotation angle torque motor. Background Art

[0002] The winding coil, as an important part of the motor stator, plays the role of forming an excitation source for the rotating magnetic field after being energized, and the motor lead wires are usually placed at the same side and the same position, that is, the tail end after winding must return near the head end. Currently, most of the stator winding processes of limited-rotation angle torque motors adopt the odd-layer winding process per pole. Although this winding process is simple, it cannot be applied in a structurally compact space and is difficult to provide enough coil turns, resulting in low mechanical performance output under the same motor size. A few adopt the even-layer winding process per pole, and there are also problems such as messy coil winding layouts and coil flying wires; the flying wire problem is more prominent during the winding of multi-pole coils, which is likely to cause uneven coil winding and a smaller local effective space of the stator, leading to a decline in the comprehensive performance of the motor. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and propose a method for winding and connecting the stator windings of a multi-layer and multi-pole limited-rotation angle torque motor, which can solve the problems existing in current limited-rotation angle motors, such as complex connection and winding processes, uneven coil winding, and low motor performance.

[0004] The present invention solves its technical problems by adopting the following technical solutions:

[0005] A method for winding and connecting the stator windings of a multi-layer and multi-pole limited-rotation angle torque motor includes a stator core, winding coils, positioning blocks, wire passing plates, lead wire plates, embedded wire passing and wire passing plates; wherein, the positioning blocks are evenly embedded on the circular stator core, a winding area is formed between two adjacent positioning blocks, the wire passing plates and the lead wire plates are respectively fixed on the positioning blocks, the embedded wire passing is closely attached to the surface of the stator core and is respectively connected to the wire passing plates and the lead wire plates, and the winding coils start winding from the head end S in the winding area and end winding at the tail end W.

[0006] Moreover, the wire passing plate has a regular triangular three-point interconnection structure, the upper point is the wire passing connection point, and the lower two points are respectively the head and tail, and tail end connection points of two winding coils.

[0007] Moreover, the lead wire plate has a seven-point zoning structure and includes three connection areas: a negative connection area, a positive connection area, and a wire passing connection area. Among them, the negative connection area includes 2 interconnection points, the positive connection area includes 3 interconnection points, the wire passing connection area includes 3 interconnection points, and the three connection areas are independent of each other.

[0008] Moreover, the head end of the embedded wire passes is connected to the wire passing connection area of the lead-out wire board, and the tail end of the embedded wire passes crosses the winding area and is connected to the wire passing connection point of the wire passing board.

[0009] Moreover, the head end at the position S is connected to the positive electrode connection area of the lead-out wire board, and the tail end at the position W is connected to the wire passing connection area of the lead-out wire board.

[0010] Moreover, it further includes two lead-out wires, which are respectively connected to the positive electrode connection area and the negative electrode connection area of the lead-out wire board, for realizing the control closed-loop connection with the system.

[0011] The advantages and positive effects of the present invention are as follows:

[0012] 1. The present invention includes a stator core, a winding coil, a positioning block, a wire passing board, a lead-out wire board, an embedded wire pass, and a wire passing board. Among them, the positioning blocks are evenly embedded on the annular stator core, a winding area is formed between two adjacent positioning blocks, the wire passing board and the lead-out wire board are respectively fixed on the positioning blocks, the embedded wire pass is closely attached to the surface of the stator core and is respectively connected to the wire passing board and the lead-out wire board, and the winding coil is wound starting from the head end S in the winding area and ending at the tail end W. The present invention adopts a winding method of evenly distributing multi-pole windings and combining series and parallel connections. Combining the use of the wire passing embedded part and the wire passing board in the present invention, the ability to output different resistances with the same number of windings can be achieved. More winding turns can be wound in a limited space, significantly improving the torque coefficient of the motor, and further increasing the output torque of the motor.

[0013] 2. The present invention adopts a wire passing embedded winding method that is closely attached to the surface of the stator core, which is convenient for the connection of multi-pole and multi-layer windings and avoids the problems of external flying wires and looseness of the windings.

[0014] 3. The present invention adopts an independent wire passing board design, which can simultaneously weld the tail ends of multiple groups of coils and the tail end of the embedded wire pass to the metallized holes of the wire passing board without interference. Combining the implementation of multi-pole and multi-layer winding wire passing, the shaping is more convenient, improving the insulation reliability and winding processability of the motor windings. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of odd layers and even layers of the limited-angle torque motor of the present invention;

[0016] Among them, (a) is the odd-layer connection and (b) is the even-layer connection;

[0017] Figure 2 It is a cross-sectional view of the winding of the limited-angle torque motor of the present invention;

[0018] Figure 3 It is a schematic diagram of the lead-out wire board and the wire passing board of the present invention;

[0019] Among them, (a) is the lead-out wire board and (b) is the wire passing board;

[0020] Figure 4 This is the winding connection diagram of the 2-layer 4-pole limited angle torque motor of the present invention;

[0021] Figure 5 This is the winding connection diagram of the 2-layer 6-pole limited angle torque motor of the present invention.

[0022] Marking description:

[0023] 1 - Stator core, 2 - Winding coil 1, 3 - Winding coil 2, 4 - Winding coil 3, 5 - Winding coil 4, 6 - Positioning block, 7 - Wiring board, 8 - Lead-out board, 9 - Lead-out wire, 10 - Embedded wiring 1, 11 - Embedded wiring 2, 12 - Wiring board. Specific implementation mode

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] A connection method for the stator winding of a multi-layer (even number ≥ 2) multi-pole (even number ≥ 4) limited angle torque motor is as Figure 1 , Figure 2 and Figure 4 shown as the winding connection diagram of the 2-layer 4-pole limited angle torque motor, including stator core (1), winding coil 1 (2), winding coil 2 (3), winding coil 3 (4), winding coil 4 (5), positioning block (6), wiring board (7), lead-out board (8), lead-out wire (9), embedded wiring 1 (10), embedded wiring 2 (11), wiring board (12).

[0026] The stator core is an annular stator core, the positioning blocks are evenly embedded on the circular stator core, a winding area is formed between two adjacent positioning blocks, the wiring board and the lead-out board are respectively fixed on the positioning blocks, and the angle between the two is 180° (when it is 4 poles). The embedded wiring 1 and the embedded wiring 2 are close to the surface of the stator core, and their heads are connected to the wiring connection area of the lead-out board, and their tails cross the winding area and are connected to the upper point of the wiring board to form "embedded" wiring; the winding coil 1 starts winding from the head S in the winding area and ends at the tail W. The head S is connected to the positive connection area of the lead-out board, and the tail W is connected to the wiring connection area; then the winding coil 2 is tightly wound on the winding area above the stator core and the wiring. The head S is connected to the wiring board, and the tail W is connected to the next wiring board; the winding coils 3 and 4 are wound in the same way; the embedded wiring 2 is connected to the negative connection area point of the lead-out board through the wiring welding point of the wiring board, so as to realize the connection of multiple groups of winding coils. The two lead-out wires are respectively connected to the positive and negative connection areas of the lead-out board to realize the control closed-loop connection with the system.

[0027] As Figure 3As shown in the figure, the wire passing board structure is a three-point interconnection type with an equilateral triangle shape. The upper point is the wire passing connection point, and the lower two points are respectively the head and tail connection points and the tail connection points of the two winding coils. The lead-out wire board structure is a seven-point partition type and includes three connection areas: the negative connection area, the positive connection area, and the wire passing connection area. Among them, the negative connection area includes two interconnection points, the positive connection area includes three interconnection points, and the wire passing connection area includes three interconnection points. The three connection areas are independent of each other.

[0028] As Figure 5 shown in the figure, it is a schematic diagram of the winding connection of two layers and six poles. By adding winding coils, wire passing boards, and pre-buried wire passing with the corresponding number of poles, the connection is carried out according to the same principle of the present invention.

[0029] The present invention adopts a winding method with evenly distributed multi-pole windings and a combination of series and parallel connections. Combining the use of wire passing pre-burial and wire passing boards in the present invention, the ability to output different resistances with the same number of windings can be achieved. By winding more winding turns in a limited space, the torque coefficient of the motor can be significantly improved, and thus the output torque of the motor can be increased.

[0030] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention includes but is not limited to the embodiments described in the specific embodiments. Any other embodiments obtained by those skilled in the art according to the technical solutions of the present invention also belong to the protection scope of the present invention.

Claims

1. A method for winding and connecting a stator winding of a multi-layer and multi-pole limited-angle torque motor, characterized in that: It includes a stator core, winding coils, positioning blocks, wire passing plates, lead-out wire plates, lead-out wires, embedded wire passing parts and wire passing plates; among them, the positioning blocks are evenly embedded on the circular stator core, a winding area is formed between two adjacent positioning blocks, the wire passing plate and the lead-out wire plate are respectively fixed on the positioning blocks, the embedded wire passing parts are closely attached to the surface of the stator core and are respectively connected to the wire passing plate and the lead-out wire plate, and the winding coils are wound starting from the head end S in the winding area and end at the tail end W.

2. The method for winding and connecting the stator winding of a multi-layer multi-pole limited-angle torque motor according to claim 1, characterized in that: The structure of the wire passing plate is a 3-point intercommunication type of regular triangle, the upper point is the wire passing connection point, and the lower two points are respectively the head-tail and tail-end connection points of two winding coils.

3. A winding connection method for the stator winding of a multi-layer multi-pole limited rotation torque motor according to claim 2, characterized in that: The structure of the lead-out wire plate is a 7-point zoning type and includes three connection areas: a negative pole connection area, a positive pole connection area and a wire passing connection area, where the negative pole connection area includes 2 intercommunication points, the positive pole connection area includes 3 intercommunication points, the wire passing connection area includes 3 intercommunication points, and the three connection areas are independent of each other.

4. A method for winding and connecting the stator winding of a multi-layer multi-pole limited-angle torque motor according to claim 3, characterized in that: The head end of the embedded wire passing part is connected to the wire passing connection area of the lead-out wire plate, and the tail end of the embedded wire passing part crosses the winding area and is connected to the wire passing connection point of the wire passing plate.

5. A method for winding and connecting a stator winding of a multi-layer multi-pole limited-rotation torque motor according to claim 3, characterized in that: The head end S is connected to the positive pole connection area of the lead-out wire plate, and the tail end W is connected to the wire passing connection area of the lead-out wire plate.

6. A method for winding and connecting the stator winding of a multi-layer multi-pole limited-rotation torque motor according to claim 1, characterized in that: It further includes two lead-out wires, and the two lead-out wires are respectively connected to the positive pole connection area and the negative pole connection area of the lead-out wire plate to realize the control closed-loop connection with the system.

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