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CN-224233475-U - Miniature air outlet motor assembly

CN224233475UCN 224233475 UCN224233475 UCN 224233475UCN-224233475-U

Abstract

The utility model discloses a miniature air outlet motor assembly which comprises a motor structure, a transmission mechanism and a circuit structure. Through structural innovation, material optimization, process coordination and system integration, the system systematically solves the problems of large size, high noise, poor reliability and the like of the traditional air outlet motor, and has wide application prospects in the fields of automobile air conditioners, precise instruments and the like and remarkable market competitiveness and commercialization potential.

Inventors

  • HU LIXIANG

Assignees

  • 方德微特电机(丽水)有限公司

Dates

Publication Date
20260512
Application Date
20250605

Claims (9)

  1. 1. A miniature air outlet motor assembly is characterized by comprising a motor structure, a transmission mechanism and a circuit structure, wherein the motor structure comprises a stator assembly and a rotor assembly, the stator assembly comprises a machine shell (21), a wire frame (22) and a pole plate (23), the rotor assembly comprises a central shaft (24) and a magnetic ring structure (25) fixed on the central shaft (24), the magnetic ring structure (25) comprises a magnetic ring frame (251) fixed on the central shaft (24) and magnetic rings (252) fixed at two ends of the magnetic ring frame (251) respectively, the transmission mechanism comprises a worm (32) and at least two cylindrical gears (31), the cylindrical gears (31) are arranged in a plastic gear box body (1) through a transmission shaft (33), the transmission shaft (32) and the plastic gear box body (1) are integrally formed through an injection molding process, the worm (32) is fixed on the central shaft (24), the worm (32) and the cylindrical gears (31) are meshed with each other, the circuit structure comprises a flexible printed wire (41) and a control board (42), the flexible printed wire (41) is electrically connected with the other end of the flexible printed wire (41) and the control board (42), the plastic gear box body (1) is provided with a power interface (111) at a power pin (43).
  2. 2. The miniature air outlet motor assembly according to claim 1, wherein two pole plates (23) are respectively located at the outer sides of the two magnetic rings (252), bases of the two pole plates (23) are overlapped and fixed together, pole plate teeth (231) respectively face the outer ends of the corresponding magnetic rings (252), the wire frame (22) comprises two wire frame monomers (221) respectively arranged at the outer sides of the pole plate teeth (231), the two wire frame monomers (221) are fixedly connected together, bases of the two pole plates (23) are located between the two wire frame monomers (221), a coil winding area (222) is arranged on the wire frame monomers (221), and coils (223) are wound in the coil winding area (222).
  3. 3. The miniature air outlet motor assembly according to claim 2, wherein the wire frame (22) is made of plastic, the pole plate (23) is made of metal, the wire frame (22) and the pole plate (23) are integrally formed, and the magnetic ring (252) is made of high-performance neodymium iron boron permanent magnet material.
  4. 4. The miniature air outlet motor assembly according to claim 1, wherein the wire frame (22) is provided with an outlet cover (224), the outlet cover (224) comprises a casing connecting part (2241) and a wire frame supporting part (2242) which are fixed together, the wire frame supporting part (2242) is provided with four pin holes (2243), the casing connecting part (2241) transversely extends out of the wire frame supporting part (2242), the pins on the wire frame (22) are inserted into the pin holes (2243) from inside to outside and extend out of the outlet cover (224), and the motor structure is electrically connected with the flexible flat cable (41) through the pins.
  5. 5. A micro air outlet motor assembly according to claim 1, wherein the transmission shaft (33) is fixed with a supporting table (34) at the outer side of one end connected with the plastic gear box body (1), and the supporting table (34) is circular and is coaxially fixed with the transmission shaft (33).
  6. 6. The miniature air outlet motor assembly according to claim 1, wherein the flexible flat cable (41) comprises a flexible substrate layer (411) and a conductive circuit layer arranged on the flexible substrate layer (411), at least two positioning holes A (412) are formed in the flexible substrate layer (411), and the positioning holes A (412) are distributed at the edge of the flexible substrate layer (411).
  7. 7. The micro air outlet motor assembly according to claim 6, wherein the flexible substrate layer (411) includes a first wiring area (4111), a connection area (4112) and a second wiring area (4113), and the first wiring area (4111), the connection area (4112) and the second wiring area (4113) are respectively provided with a positioning hole a (412), and the positioning holes a (412) are asymmetrically distributed on the flexible substrate layer (411).
  8. 8. The miniature air outlet motor assembly according to claim 1, wherein the motor structure is fixed in the plastic gear box body (1) through a damping mechanism, the damping mechanism comprises fixing seats (51) arranged at the front end and the rear end of the shell (21), the fixing seats (51) and the plastic gear box body (1) are integrally formed, rubber pads (52) are arranged between the fixing seats (51) and the shell (21), the rubber pads (52) isolate the shell (21) from being in direct contact with the fixing seats (51), a plurality of through holes (54) are formed in cover plates (53) at the front end and the rear end of the shell (21), at least two positioning columns (55) matched with the through holes (54) are fixed on one side of the rubber pads (52) facing the shell (21), and the positioning columns (55) are clamped into the through holes (54) to prevent the shell (21) from rotating radially.
  9. 9. The miniature air outlet motor assembly according to claim 8, wherein the hardness of the rubber pad (52) is 65-75 degrees of shore a, the fixing seat (51) is provided with a mounting groove (56) on one side facing the shell (21), the mounting groove (56) is matched with the shape of the rubber pad (52), the rubber pad (52) is clamped into the mounting groove (56), the top of the mounting groove (56) is of an opening design, the outer side of the cover plate (53) is fixed with an outwards-protruding positioning table (57) at the axis of the shell (21), a shaft hole (58) matched with the central shaft (24) is formed in the center of the positioning table (57), a positioning hole B (59) matched with the positioning table (57) is formed in the rubber pad (52), and the positioning table (57) is clamped into the positioning hole B (59).

Description

Miniature air outlet motor assembly Technical Field The utility model relates to a miniature air outlet motor assembly. Background The stepping motor is widely applied to various automatic control systems, the driving motor is arranged at the air outlet of the automobile air conditioner, and at present, the motor at the air outlet of the automobile air conditioner has the following defects: 1. the transmission precision is not enough, namely the fixing precision of the gear box body and the transmission shaft is poor, so that abrasion and noise are increased; 2. The motor is usually connected through an external power line, the fixing mode is unreliable, and the motor is easy to loosen or poor in contact; 3. The noise problem is that the noise is more than 40dB when the conventional stepping motor operates, and the uneven gear meshing gap aggravates vibration and noise, so that the driving comfort is affected. Disclosure of utility model Aiming at the problems, the utility model provides a miniature air outlet motor assembly, which effectively solves the problems pointed out in the background technology. The technical scheme adopted by the utility model is as follows: A miniature air outlet motor assembly comprises a motor structure, a transmission mechanism and a circuit structure; The motor structure comprises a stator assembly and a rotor assembly, wherein the stator assembly comprises a shell, a wire frame and a polar plate, the rotor assembly comprises a central shaft and a magnetic ring structure fixed on the central shaft, and the magnetic ring structure comprises a magnetic ring frame fixed on the central shaft and magnetic rings respectively fixed at two ends of the magnetic ring frame; The transmission mechanism comprises a worm and at least two cylindrical gears, wherein the cylindrical gears are arranged in the plastic gear box body through a transmission shaft, the transmission shaft and the plastic gear box body are integrally formed through an injection molding process, the worm is fixed on a central shaft, and the worm and the cylindrical gears are mutually meshed; The circuit structure comprises a soft flat cable and a control board, wherein one end of the soft flat cable is electrically connected with the motor structure, the other end of the soft flat cable is electrically connected with the control board, a power supply contact pin is fixed on the control board, and a power supply interface is arranged at the power supply contact pin of the plastic gear box body. Preferably, the two pole plates are respectively positioned at the outer sides of the two magnetic rings, the bases of the two pole plates are overlapped and fixed together, pole plate teeth face the outer ends of the corresponding magnetic rings respectively, the wire frame comprises two wire frame monomers respectively arranged at the outer sides of the pole plate teeth, the two wire frame monomers are fixedly connected together, the bases of the two pole plates are positioned between the two wire frame monomers, a coil winding area is arranged on the wire frame monomers, and a coil is wound in the coil winding area. Preferably, the wire frame is made of plastic, the polar plate is made of metal, the wire frame and the polar plate are integrally formed, and the magnetic ring is made of high-performance neodymium iron boron permanent magnet material. Preferably, the wire frame on be equipped with the wire cover, the wire cover include casing connecting portion and the wire frame supporting portion that is fixed together, wire frame supporting portion on seted up four contact pin holes, casing connecting portion transversely stretch out to the wire frame supporting portion outward, contact pin on the wire frame inserts the contact pin hole from inside to outside and stretches out to the wire cover outward, motor structure pass through contact pin and soft winding displacement electricity and be connected. Preferably, the transmission shaft is fixed with a supporting table at the outer side of one end connected with the plastic gear box body, and the supporting table is circular and is coaxially fixed with the transmission shaft. Preferably, the flexible flat cable comprises a flexible substrate layer and a conductive circuit layer arranged on the flexible substrate layer, wherein at least two positioning holes A are formed in the flexible substrate layer, and the positioning holes A are distributed at the edge of the flexible substrate layer. Preferably, the flexible substrate layer comprises a first wiring area, a connecting area and a second wiring area, wherein positioning holes A are formed in the first wiring area, the connecting area and the second wiring area, and the positioning holes A are asymmetrically distributed on the flexible substrate layer. Preferably, the motor structure is fixed in the plastic gear box body through a damping mechanism, the damping mechanism comprises a fixed seat arranged at the front end and