CN-122001132-A - Motor winding, motor and electronic expansion valve

Abstract

The invention relates to a motor winding, a motor and an electronic expansion valve, wherein the motor winding comprises a coil, a coil framework and a magnetic conduction pole shoe, the magnetic conduction pole shoe comprises a magnetic conduction part, a plurality of pin fixing bosses are arranged on the outer periphery of the coil framework, pins are arranged on the pin fixing bosses, window holes corresponding to at least part of the pin fixing bosses are arranged on the magnetic conduction part, the pin fixing bosses independently or respectively penetrate through the corresponding window holes in a grouping mode, magnetic conduction strips are formed between adjacent window holes in the circumferential direction, part of a magnetic field generated by the winding can be transmitted through the magnetic conduction strips, magnetic flux between the pin fixing bosses can be increased, uniformity of magnetic field distribution is improved, and balance of motor winding torque is improved.

Inventors

• Request for anonymity
• Request for anonymity

Assignees

• 杭州三花研究院有限公司

Dates

Publication Date

20260508

Application Date

20241031

Claims (19)

1. 1. The motor winding comprises a coil (10), a coil framework (20) and a magnetic conduction pole shoe (30), wherein the magnetic conduction pole shoe (30) comprises a magnetic conduction part (31), the magnetic conduction part (31) is sleeved on the coil framework (20), the coil (10) is located in a groove (21) of the coil framework (20), and the motor winding is characterized in that a plurality of pin fixing bosses (22) are arranged on the outer periphery of the coil framework (20), pins (40) are arranged on the pin fixing bosses (22), the magnetic conduction part (31) is provided with window holes (3121) corresponding to at least part of the pin fixing bosses (22), the pin fixing bosses (22) singly or in groups penetrate through the window holes (3121) corresponding to the pin fixing bosses, and magnetic conduction strips (3122) are arranged between the adjacent window holes (3121) in the circumferential direction.
2. 2. The motor winding according to claim 1, wherein the magnetically conductive portion (31) is provided with windows (3121) corresponding to the respective pin fixing bosses (22), and the respective pin fixing bosses (22) pass through the corresponding windows (3121).
3. 3. The motor winding according to claim 1, wherein the magnetic conductive portion (31) comprises a main body magnetic conductive portion (311) and a magnetic conductive member (312), the main body magnetic conductive portion (311) and the magnetic conductive member (312) are separately arranged, the main body magnetic conductive portion (311) and the magnetic conductive member (312) are connected in the circumferential direction, the window hole (3121) is formed in the magnetic conductive member (312), and the magnetic conductive member (312) is sleeved on the pin fixing boss (22) through the window hole (3121).
4. 4. The motor winding according to claim 1, comprising a plurality of groups of coils (10) and bobbins (20), wherein the magnetizer (312) is provided with a plurality of rows of windows (3121) corresponding to the pin fixing bosses (22) of each group of the bobbins (20), and the plurality of rows of windows (3121) are aligned in an axial direction.
5. 5. The electric machine winding according to claim 4, characterized in that the row of windows (3121) at the lower side of the magnetic conductor part (31) is of an open structure with openings at the lower bottom wall of the magnetic conductor body (312).
6. 6. The motor winding according to claim 1, characterized by comprising a plurality of groups of coils (10) and coil bobbins (20), wherein a plurality of rows of window holes (3121) corresponding to pin fixing bosses (22) of each group of the coil bobbins (20) are provided on the magnetizer (312), and the plurality of rows of window holes (3121) are penetrated in an axial direction.
7. 7. The motor winding according to claim 1, wherein the pin fixing boss (22) has a first surface (a) and a lead groove (221), the lead groove (221) is recessed from the first surface (a), the lead groove (221) extends from a root portion to an end surface of the pin fixing boss (22), and a portion of the lead (11) of the coil (10) is located in the lead groove (221) and extends along the lead groove (221) to the pin (40).
8. 8. The motor winding according to claim 7, wherein the aperture (3121) has a first aperture wall (b) opposite to a first surface (a) of the pin fixing boss (22), a distance between the first aperture wall (b) and the first surface (a) being L,2 mm+.l+.4 mm.
9. 9. The electric motor winding according to claim 8, characterized in that the first hole wall (b) of the aperture (3121) comprises a first wall portion (b-1), a second wall portion (b-2) and a third wall portion (b-3), the third wall portion (b-3) being located between the first wall portion (b-1) and the second wall portion (b-2), the third wall portion (b-3) being parallel to the first surface (a), the first wall portion (b-1) and the second wall portion (b-2) being obliquely arranged or arc-shaped.
10. 10. The motor winding according to claim 7, wherein the lead groove (221) includes a first bottom wall, a portion of the lead (11) is located on a side of the first bottom wall facing the first surface (a), and a distance from the first bottom wall to the first surface (a) becomes gradually larger from a root portion to an end portion of the pin fixing boss (22).
11. 11. The electrical machine winding according to claim 10, characterized in that the electrical machine winding comprises a fixture, which fixture is at least partially located in the lead slot (221), and that a portion of the lead (11) is located between the fixture and a slot bottom wall of the lead slot (221).
12. 12. The electric machine winding according to claim 11, characterized in that the fixing member comprises a wedge block (222) capable of being clamped to the lead groove (221), the height of the wedge block (222) is gradually increased from one end to the other end, the wedge block (222) is embedded into the lead groove (221), and a part of the lead (11) is located between the wedge block (222) and the first bottom wall of the lead groove (221).
13. 13. The motor winding according to claim 7, wherein a first isolation groove (223) and a second isolation groove (224) are respectively provided on both sides of the first surface (a) of the pin fixing boss (22), a first convex fence (225) is formed between the first isolation groove (223) and the lead groove (221), and a second convex fence (226) is formed between the second isolation groove (224) and the lead groove (221).
14. 14. The electric machine winding according to claim 13, characterized in that the thickness (d) of the first and second protruding barriers (225, 226) is 1mm or more, and the height (h) of the first and second protruding barriers (225, 226) is 2mm or more.
15. 15. The electric machine winding according to any of claims 1 to 14, characterized in that the length direction of the magnetically permeable strips (3122) is parallel to the direction of the magnetic field lines.
16. 16. The motor winding according to any one of claims 1 to 14, characterized in that the thickness of the peripheral portion of the aperture (3121) is greater than the thickness of the main body portion of the magnetically permeable portion (31), or the thickness of the magnetically permeable strip (3122) is greater than the thickness of the main body portion of the magnetically permeable portion (31).
17. 17. The electric machine winding according to any one of claims 1 to 14, characterized in that the bobbin (20) is provided with inner flanges (23) on both sides of the coil (10), the inner flanges (23) being provided with annular grooves (231) on the circumferential surface.
18. 18. An electric machine comprising a housing and windings, said windings being nested within said housing, characterized in that said windings are the electric machine windings of any one of claims 1-17.
19. 19. An electronic expansion valve comprising a valve body member and a stepper motor for actuating a valve needle of said valve body member, wherein said stepper motor is provided with a motor winding as claimed in any one of claims 1 to 17.

Description

Motor winding, motor and electronic expansion valve Technical Field The invention relates to the technical field of motors, in particular to a lead structure of a motor winding. The invention also relates to an electric motor provided with a motor winding and an electronic expansion valve. Background The claw pole permanent magnet motor winding is usually wound in a circular coil mode, and as the pins are positioned outside the annular magnetic conduction pole shoe of the motor, the wire heads or wire tails of the outgoing wires of the winding are required to be obliquely pulled to the outgoing pins and penetrate through the annular magnetic conduction pole shoe. The ring-shaped magnetic conductive pole shoe is provided with a larger window, and the pins are positioned in the same window. Because the magnetic pole shoes are designed with larger windows, the high magnetic conduction loop at the window is cut off, the magnetic circuits of the three pairs of claw pole shoes corresponding to the windows at the inner sides of the magnetic pole shoes are blocked, magnetic force lines can only bypass from the window air gaps or the two sides of the windows, the magnetic flux of the three pairs of magnetic pole pairs corresponding to the windows is reduced, and the torque balance is required to be further improved. Disclosure of Invention The invention aims to provide a motor winding, which comprises a coil, a coil framework and a magnetic conduction pole shoe, wherein the magnetic conduction pole shoe comprises a magnetic conduction part, the magnetic conduction part is sleeved in the coil framework, the coil is positioned in a groove of the coil framework, the outer periphery of the coil framework is provided with a plurality of pin fixing bosses, the pin fixing bosses are provided with pins, the magnetic conduction part is provided with window holes corresponding to at least part of the pin fixing bosses, the pin fixing bosses independently or in groups penetrate through the window holes corresponding to the pin fixing bosses, and magnetic conduction strips are arranged between the adjacent window holes in the circumferential direction. The motor winding comprises a coil framework and magnetic conduction pole shoes, wherein the magnetic conduction pole shoes comprise circumferentially arranged magnetic conduction parts, the magnetic conduction parts are sleeved on the coil framework, a plurality of pin fixing bosses are arranged on the outer periphery of the coil framework, pins are arranged on the pin fixing bosses, window holes corresponding to at least part of the pin fixing bosses are arranged on the magnetic conduction parts, the pin fixing bosses independently or in groups penetrate through the window holes corresponding to the pin fixing bosses, magnetic conduction strips are arranged between adjacent window holes in the circumferential direction, the magnetic conduction strips between the window holes can conduct magnetic circuits, part of a magnetic field generated by the winding can be transmitted through the magnetic conduction strips, the magnetic flux between the pin fixing bosses is increased, the uniformity of magnetic field distribution is improved, and the balance of motor winding torque is improved. The technical scheme aims at providing a motor which comprises a shell and a motor winding, wherein the motor winding is sleeved in the shell. The motor comprises a shell and a motor winding, wherein the motor winding comprises a coil framework and a magnetic conduction pole shoe, the magnetic conduction pole shoe comprises a circumferentially arranged magnetic conduction part, the magnetic conduction part is sleeved on the coil framework, a plurality of pin fixing bosses are arranged on the outer periphery of the coil framework, pins are arranged on the pin fixing bosses, window holes corresponding to at least part of the pin fixing bosses are arranged on the magnetic conduction part, the pin fixing bosses independently or in groups penetrate through the window holes corresponding to the pin fixing bosses, magnetic conduction strips are arranged between adjacent window holes in the circumferential direction, the magnetic conduction strips between the window holes can conduct magnetic circuits, part of a magnetic field generated by the winding can be transmitted through the magnetic conduction strips, the magnetic flux between the pin fixing bosses is increased, the uniformity of magnetic field distribution is improved, and the balance of motor winding torque is improved. The electronic expansion valve comprises a valve body part and a motor for driving the valve needle of the valve body part to act, wherein the motor comprises a motor winding. In order to achieve the above purpose, the electronic expansion valve provided by the technical scheme comprises a valve body part and a motor for driving a valve needle of the valve body part to act, wherein the motor comprises a motor winding. The electroni