Motor stator and winding method thereof

Abstract

The present invention relates to a motor stator and a winding method thereof. The stator comprises a front frame, a rear frame, and a stator core encased by the front and rear frames. Eight wire tripping posts, namely the first to eighth tripping posts, are provided in each of the eight main interpole slots of the rear frame. The rear frame is provided with thickened skirt portions at two corners of the motor stator's wire outlet. Pins for winding and routing the motor lead wires are provided on the thickened skirt portions or on some of the eight tripping posts. Compared with existing technologies, this invention significantly improves the reliability of the motor's wire routing.

Description

Technical Field

[0001] The present invention relates to a motor, and in particular to a motor stator and a winding method thereof. Background Art

[0002] The stator of the existing stepper motor is as follows Figure 1-3 As shown, the front and rear frames at both ends of the stator wrap around the stator core. During stator winding, only one end is typically used for wire mixing, so a wire mixing post structure is designed at one end of the front and rear frames. The wire ends of the two-phase windings on the stator output side are typically welded using DCBA welding and then connected to the motor terminals. If the wire ends are welded directly to the terminals (i.e., terminals A and C and terminals B and D on the top of the stator, as shown in the figure below), and if the principle of nearest wiring is followed, the wire pulling distance may be too long or the two-phase leads may cross. During this process, insufficient lead tension may occur, causing the wires to sag and fall, thereby reducing the reliability of the motor winding and lead-in. Summary of the Invention

[0003] The purpose of the present invention is to provide a motor stator and a winding method thereof in order to overcome the defects of the above-mentioned prior art.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] According to a first aspect of the present invention, a motor stator is provided, comprising a front frame, a rear frame and a stator core wrapped by the front frame and the rear frame, wherein eight mixing poles are respectively provided in the eight slots between the main poles of the rear frame, namely the first mixing pole to the eighth mixing pole, and the rear frame is provided with a skirt thickening portion at two corners of the motor stator output end, and the rear frame is provided with a PIN needle for winding and passing the motor lead wire end on the skirt thickening portion or on some of the eight mixing poles.

[0006] As a preferred technical solution, the shape of the PIN pins is square, and the number of PIN pins installed on the thickened portion of the skirt is designed according to the number of motor output wire ends.

[0007] As a preferred technical solution, A1-A4 are set as the four main poles of phase A, B1-B4 are set as the four main poles of phase B, slots I to VIII are the slots between the eight main poles, the first wire end of the A-phase winding is connected to PIN pin C when connected, and the second wire end of the A-phase winding is connected to PIN pin A when connected; the third wire end of the B-phase winding is connected to PIN pin D when connected, and the fourth wire end of the B-phase winding is connected to PIN pin B when connected.

[0008] As a preferred technical solution, there are four PIN needles, namely PIN needle A, PIN needle B, PIN needle C and PIN needle D, which are distributed on the thickened part of the skirt.

[0009] As a preferred technical solution, the first and second wire ends of the A-phase winding are arranged in slot II and slot VIII respectively; the third and fourth wire ends of the B-phase winding are arranged in slot III and slot I respectively.

[0010] As a preferred technical solution, the first and second wire ends of the A-phase winding are respectively arranged in slot I and slot VII, and the third and fourth wire ends of the B-phase winding are respectively arranged in slot II and slot VIII.

[0011] As a preferred technical solution, there are four PIN needles, including PIN needle B and PIN needle D distributed on the thickened part of the skirt, PIN needle C distributed on the second wire mixing column, and PIN needle A on the eighth wire mixing column.

[0012] According to a second aspect of the present invention, a winding method for the motor stator is provided, the winding method comprising:

[0013] 1) The first wire end of phase A is wound around PIN C for several turns, then wound on the second mixing pole, and then the winding of each main pole of phase A begins. After the main pole winding is completed, the second wire end distributed in slot VIII is first wound on the eighth mixing pole, and then wound on PIN A, completing the winding of phase A of the motor;

[0014] 2) After the third wire end of phase B is wrapped around PIN D for several turns, the winding of each main pole of phase B begins. After the winding of the main pole is completed, the fourth wire end distributed in slot I is directly wound around PIN B nearby to complete the winding of phase B of the motor.

[0015] According to a third aspect of the present invention, a winding method for the motor stator is provided, the winding method comprising:

[0016] 1) The first wire end of phase A is wound around PIN C for several turns, then wound on the second mixing pole for transition, and then the winding of each main pole of phase A begins. After the main pole winding is completed, the second wire end distributed in slot VII is first wound on the eighth mixing pole for transition, and then wound on PIN A, completing the winding of phase A of the motor;

[0017] 2) After the third wire end of phase B is wrapped around PIN D for several turns, the winding of each main pole of phase B begins. After the winding of the main pole is completed, the fourth wire end distributed in slot VIII is directly wound around PIN B to complete the winding of phase B of the motor.

[0018] According to a fourth aspect of the present invention, a winding method for the motor stator is provided, the winding method comprising:

[0019] 1) After the first wire end of phase A is wound several times around the PIN C on the second mixing pole, the winding of each main pole of phase A begins directly. After the main pole winding is completed, the second wire end distributed in slot VIII is wound around the nearest PIN A on the eighth mixing pole, completing the winding of phase A of the motor;

[0020] 2) After the third wire end of phase B is wrapped around the PIN D on the thickened part of the skirt for several turns, the winding of each main pole of phase B begins. After the winding of the main pole is completed, the fourth wire end distributed in slot I is directly wound around the PIN B on another thickened part of the skirt to complete the winding of phase B of the motor.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1) In the stepper motor winding method of the present invention, wire mixing columns are provided at both ends of the motor stator frame, one end is used for winding the stator main pole, and the other end is used for the motor's output wire end to transfer the wire; on the motor output side, the rear frame is designed with a skirt thickening part at the two corners close to the stator core, on which a PIN needle for winding the wire is installed; when the lead wire end is wound around the PIN needle, due to the long wire pulling distance, the lead wire can first be wound and transferred on the adjacent wire mixing column, and then wound around the nearby PIN needle.

[0023] 2) The present invention can overlap the wire-stirring post with the PIN pin, and set the PIN pin at the position of the wire-stirring post on the rear frame. When winding, the wire can be led from the PIN pin. The above winding method greatly improves the reliability of the motor wire leading. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the rear skeleton structure of the stator of an existing stepping motor;

[0025] Figure 2 This is a schematic diagram of the front skeleton structure of the existing stepper motor stator;

[0026] Figure 3 This is a schematic diagram of the connection between the existing stepper motor wire ends and the wiring terminals;

[0027] Figure 4 This is a schematic diagram of the exploded structure of the motor and electronics of the present invention;

[0028] Figure 5 This is a diagram of the motor wire outlet in Example 1 of the present invention;

[0029] Figure 6 This is a schematic diagram of the front structure of the rear frame of Example 1 of the present invention;

[0030] Figure 7 This is a schematic diagram of the three-dimensional structure of the rear frame of Example 1 of the present invention;

[0031] Figure 8This is a schematic diagram of the winding of embodiment 1 of the present invention;

[0032] Figure 9 This is a diagram of the motor wire ends according to embodiment 2 of the present invention;

[0033] Figure 10 This is a schematic diagram of the winding of embodiment 2 of the present invention;

[0034] Figure 11 This is a three-dimensional schematic diagram of the motor wire outlet according to embodiment 3 of the present invention;

[0035] Figure 12 This is a schematic diagram of the main view of the motor wire outlet of embodiment 3 of the present invention;

[0036] Figure 13 This is a schematic diagram of winding according to embodiment 3 of the present invention;

[0037] Among them, 1 is the front frame, 2 is the rear frame, 3 is the stator core, 4 is the skirt thickening part, P is the PIN pin, P1 is the PIN pin A, P2 is the PIN pin B, P3 is the PIN pin C, P4 is the PIN pin D, 51 is the first wire end, 52 is the second wire end, 61 is the third wire end, 62 is the fourth wire end, A1-A4 are the 4 main poles of phase A, B1-B4 are the 4 main poles of phase B, slots I to slots VIII are the slots between the 8 main poles, and a to h are the first to eighth mixing poles. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0039] Example 1

[0040] like Figure 4-8 As shown, a motor stator includes a front frame 1, a rear frame 2 and a stator core 3 wrapped by the front frame 1 and the rear frame 2. Eight mixing poles are respectively provided in the eight slots between the main poles of the rear frame 2, namely the first mixing pole a to the eighth mixing pole h. The rear frame 2 is provided with a skirt thickening portion 4 at two corners of the motor stator output end. The rear frame 2 is provided with a PIN needle P for winding and passing the motor lead wire end on the skirt thickening portion 4 or on some of the eight mixing poles.

[0041] The shape of the PIN needle P is square, and the number of the PIN needles installed on the skirt thickening portion 4 is designed according to the number of motor output wire ends.

[0042] Set A1-A4 as the 4 main poles of phase A, B1-B4 as the 4 main poles of phase B, slots I to VIII as the slots between the 8 main poles, the first wire end 51 of the A-phase winding is connected to the PIN pin CP3 when connected, and the second wire end 52 of the A-phase winding is connected to the PIN pin AP1 when connected; the third wire end 61 of the B-phase winding is connected to the PIN pin DP4 when connected, and the fourth wire end 62 of the B-phase winding is connected to the PIN pin BP2 when connected.

[0043] There are four PIN pins P, namely, PIN pin AP1 , PIN pin BP2 , PIN pin CP3 and PIN pin DP4 , which are distributed on the thickened skirt portion 4 .

[0044] The first wire end 51 and the second wire end 52 of the A-phase winding are arranged in slot II and slot VIII respectively; the third wire end 61 and the fourth wire end 62 of the B-phase winding are arranged in slot III and slot I respectively.

[0045] In order to avoid the problem of excessively long wire pulling distance when winding the stator main pole directly from the PIN pin, the winding method of this embodiment includes:

[0046] 1) The first wire end 51 of phase A is wound several times around pin CP3, then wound on the second mixing post b, and then the winding of each main pole of phase A begins. After the main pole winding is completed, the second wire end 52 distributed in slot VIII is first wound on the eighth mixing post h, and then wound on pin AP1, completing the winding of phase A of the motor.

[0047] 2) After the third wire end 61 of phase B is wound around the PIN pin DP4 for several turns, the winding of each main pole of phase B begins. After the winding of the main pole is completed, the fourth wire end 62 distributed in slot I is directly wound around the nearest PIN pin BP2 to complete the winding of phase B of the motor.

[0048] In the stepper motor winding method of the present invention, the motor stator frames at both ends are provided with wire mixing posts, one end is used for winding the stator main pole, and the other end is used for the motor's output wire end to transfer the wire through the wire; on the motor output side, the rear frame is designed with a skirt thickening portion at the two corners close to the stator core, on which a PIN needle for winding the wire is installed; when the lead wire end is wound around the PIN needle, due to the long wire pulling distance, the lead wire can first be wound and transferred on the adjacent wire mixing post, and then wound around the PIN needle nearby. In addition, the wire mixing post and the PIN needle can be overlapped, and the PIN needle can be set at the wire mixing post position of the rear frame. When winding, the lead wire can be started from the PIN needle nearby; the above winding method greatly improves the reliability of the motor's wire leading.

[0049] Example 2

[0050] like Figure 9-10As shown, the first wire end 51 and the second wire end 52 of the A-phase winding are arranged in slot I and slot VII respectively, and the third wire end 61 and the fourth wire end 62 of the B-phase winding are arranged in slot II and slot VIII respectively.

[0051] The winding method includes:

[0052] 1) The first wire end 51 of phase A is wound several times around pin CP3, then wound on the second mixing post b, and then the winding of each main pole of phase A begins. After the main pole winding is completed, the second wire end 52 distributed in slot VII is first wound on the eighth mixing post h, and then wound on pin AP1, completing the winding of phase A of the motor.

[0053] 2) After the third wire end 61 of phase B is wound around the PIN pin DP4 for several turns, the winding of each main pole of phase B begins. After the winding of the main pole is completed, the fourth wire end 62 distributed in slot VIII is directly wound around the nearest PIN pin BP2 to complete the winding of phase B of the motor.

[0054] The rest is the same as in Example 1.

[0055] Example 3

[0056] The PIN pins on the rear frame can be located on the wire mixing column or on the thickened part of the skirt. Their positions can be set nearby according to the positions of the motor output wire ends, and the number of PIN pins is also determined by the motor output wire ends.

[0057] like Figure 10-13 As shown, there are four PIN pins P, including PIN pin BP2 and PIN pin DP4 distributed on the skirt thickened portion 4, and PIN pin CP3 distributed on the second tripping pole b and PIN pin AP1 on the eighth tripping pole h.

[0058] The winding method includes:

[0059] 1) The first wire end 51 of phase A is wound several times around pin CP3, then wound on the second mixing post b, and then the winding of each main pole of phase A begins. After the main pole winding is completed, the second wire end 52 distributed in slot VII is first wound on the eighth mixing post h, and then wound on pin AP1, completing the winding of phase A of the motor.

[0060] 2) After the third wire end 61 of phase B is wound around the PIN pin DP4 for several turns, the winding of each main pole of phase B begins. After the winding of the main pole is completed, the fourth wire end 62 distributed in slot VIII is directly wound around the nearest PIN pin BP2 to complete the winding of phase B of the motor.

[0061] The rest is the same as in Example 1.

[0062] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A winding method for a motor stator, characterized in that: The motor stator comprises a front frame (1), a rear frame (2) and a stator core (3) wrapped by the front frame (1) and the rear frame (2); eight mixing wire poles are respectively provided in the eight slots between the main poles of the rear frame (2), namely the first mixing wire pole (a) to the eighth mixing wire pole (h); the rear frame (2) is provided with a skirt thickening portion (4) at two corners of the motor stator outlet end; the rear frame (2) is provided with a PIN needle (P) for winding and passing the motor lead wire end on the skirt thickening portion (4) or on some of the eight mixing wire poles; A1-A4 are set as the four main poles of phase A, B1-B4 are set as the four main poles of phase B, slots I to slots VIII are the slots between the eight main poles, the first wire end (51) of the phase A winding is connected to the PIN pin C (P3) when connected, and the second wire end (52) of the phase A winding is connected to the PIN pin A (P1) when connected; the third wire end (61) of the phase B winding is connected to the PIN pin D (P4) when connected, and the fourth wire end (62) of the phase B winding is connected to the PIN pin B (P2) when connected; the PIN pins (P) are provided with four, namely, PIN pin A (P1), PIN pin B (P2), PIN pin C (P3) and PIN pin D (P4) distributed on the thickened part (4) of the skirt; the first wire end (51) and the second wire end (52) of the phase A winding are arranged in slot II and slot VIII respectively; the third wire end (61) and the fourth wire end (62) of the phase B winding are arranged in slot III and slot I respectively; The winding method comprises: 1) The first wire end (51) of phase A is wound several times on PIN C (P3) and then wound on the second mixing pole (b) for transition. After that, the winding of each main pole of phase A is started. After the winding of the main pole is completed, the second wire end (52) distributed in slot VIII is first wound on the eighth mixing pole (h) for transition and then wound on PIN A (P1). The winding of phase A of the motor is completed. 2) The third wire end (61) of phase B is wound around PIN D (P4) for several turns before winding the main poles of phase B. After the winding of the main poles is completed, the fourth wire end (62) distributed in slot I is directly wound around PIN B (P2) to complete the winding of phase B of the motor.

2. The winding method according to claim 1, wherein: The PIN needle (P) is square in shape.

3. A winding method for a motor stator, characterized in that: The motor stator comprises a front frame (1), a rear frame (2) and a stator core (3) wrapped by the front frame (1) and the rear frame (2); eight mixing wire poles are respectively provided in the eight slots between the main poles of the rear frame (2), namely the first mixing wire pole (a) to the eighth mixing wire pole (h); the rear frame (2) is provided with a skirt thickening portion (4) at two corners of the motor stator outlet end; the rear frame (2) is provided with a PIN needle (P) for winding and passing the motor lead wire end on the skirt thickening portion (4) or on some of the eight mixing wire poles; A1-A4 are set as the four main poles of phase A, B1-B4 are set as the four main poles of phase B, slots I to slots VIII are the slots between the eight main poles, the first wire end (51) of the phase A winding is connected to the PIN pin C (P3) when connected, and the second wire end (52) of the phase A winding is connected to the PIN pin A (P1) when connected; the third wire end (61) of the phase B winding is connected to the PIN pin D (P4) when connected, and the fourth wire end (62) of the phase B winding is connected to the PIN pin B (P2) when connected; the PIN pins (P) are provided with four, namely, PIN pin A (P1), PIN pin B (P2), PIN pin C (P3) and PIN pin D (P4) distributed on the thickened part (4) of the skirt; the first wire end (51) and the second wire end (52) of the phase A winding are arranged in slot I and slot VII respectively, and the third wire end (61) and the fourth wire end (62) of the phase B winding are arranged in slot II and slot VIII respectively; The winding method includes: 1) The first wire end (51) of phase A is wound several times on PIN C (P3) and then wound on the second mixing pole (b) for transition. Then, the winding of each main pole of phase A is started. After the winding of the main pole is completed, the second wire end (52) distributed in slot VII is first wound on the eighth mixing pole (h) for transition and then wound on PIN A (P1). The winding of phase A of the motor is completed. 2) After the third wire end (61) of phase B is wound around PIN D (P4) for several turns, the winding of each main pole of phase B begins. After the winding of the main pole is completed, the fourth wire end (62) distributed in slot VIII is directly wound around PIN B (P2) to complete the winding of phase B of the motor.

4. The winding method according to claim 3, characterized in that The PIN needle (P) is square in shape.

5. A winding method for a motor stator, characterized in that: The motor stator comprises a front frame (1), a rear frame (2) and a stator core (3) wrapped by the front frame (1) and the rear frame (2); eight mixing wire poles are respectively provided in the eight slots between the main poles of the rear frame (2), namely the first mixing wire pole (a) to the eighth mixing wire pole (h); the rear frame (2) is provided with a skirt thickening portion (4) at two corners of the motor stator outlet end; the rear frame (2) is provided with a PIN needle (P) for winding and passing the motor lead wire end on the skirt thickening portion (4) or on some of the eight mixing wire poles; A1-A4 are set as the four main poles of phase A, B1-B4 are set as the four main poles of phase B, slots I to slots VIII are the slots between the eight main poles, the first wire end (51) of the phase A winding is connected to the PIN pin C (P3) when connected, and the second wire end (52) of the phase A winding is connected to the PIN pin A (P1) when connected; the third wire end (61) of the phase B winding is connected to the PIN pin D (P4) when connected, and the fourth wire end (62) of the phase B winding is connected to the PIN pin B (P2) when connected; the PIN pins (P) are provided with four, including the PIN pin B (P2) and the PIN pin D (P4) distributed on the thickened skirt portion (4), the PIN pin C (P3) distributed on the second mixing wire column (b), and the PIN pin A (P1) on the eighth mixing wire column (h). The winding method comprises: 1) After the first wire end (51) of phase A is wound around the PIN C (P3) on the second mixing pole (b) for several turns, the winding of each main pole of phase A is started directly. After the winding of the main pole is completed, the second wire end (52) distributed in the slot VIII is wound around the PIN A (P1) on the eighth mixing pole (h) to complete the winding of phase A of the motor; 2) After the third wire end (61) of phase B is wound around the PIN needle D (P4) on the thickened part of the skirt for several turns, the winding of each main pole of phase B begins. After the winding of the main pole is completed, the fourth wire end (62) distributed in the slot I is directly wound around the PIN needle B (P2) on the other thickened part of the skirt to complete the winding of phase B of the motor.

6. The winding method according to claim 5, characterized in that The PIN needle (P) is square in shape.

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