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CN-224204851-U - Bidirectional parallel winding frame, voice coil motor, camera and electronic equipment

CN224204851UCN 224204851 UCN224204851 UCN 224204851UCN-224204851-U

Abstract

The utility model relates to a bidirectional parallel winding frame, a voice coil motor, a camera and electronic equipment, wherein the bidirectional parallel winding frame comprises a winding frame body, at least two winding grooves, a plurality of independent coils and a parallel circuit structure; the winding frame body is provided with a cylindrical main body structure extending along the axial direction, at least two winding grooves are uniformly distributed along the circumferential direction of the winding frame body, each group of winding grooves surrounds the winding frame body for a circle, a plurality of independent coils are wound in each winding groove, and the starting end and the ending end of each coil are connected in parallel through conductive connecting pieces respectively. According to the utility model, through the unique structural design and an innovative coil connection mode, the parallel connection of multiple coils is realized, and the current in a single coil can be obviously improved under the condition of not changing the input voltage, so that the thrust of the voice coil motor is greatly increased.

Inventors

  • ZHANG XUYAO
  • OUYANG JIANHUA

Assignees

  • 河源友华微机电科技有限公司

Dates

Publication Date
20260505
Application Date
20250402

Claims (10)

  1. 1. A bidirectional parallel winding frame is characterized by comprising A bobbin body (1) having a cylindrical main body structure extending in an axial direction; At least two winding grooves (2) which are uniformly distributed along the circumferential direction of the winding frame body (1), wherein each group of winding grooves (2) surrounds the winding frame body (1) for a circle; A plurality of independent coils (6), each winding slot (2) being wound with a single coil (6); the parallel circuit structure is characterized in that the starting end and the ending end of each coil (6) are respectively connected in parallel through conductive connecting pieces (7).
  2. 2. The bidirectional parallel bobbin of claim 1, wherein the conductive connection (7) comprises a first common winding leg (4) and a second common winding leg (5), the first common winding leg (4) and the second common winding leg (5) being fixed at two ends of the bobbin body (1) and being insulated from the bobbin body (1); The starting ends of all coils (6) are fixed on the first common-connection winding post (4) and form a first common-connection point, the ending ends of all coils (6) are fixed on the second common-connection winding post (5) and form a second common-connection point, and the first common-connection point and the second common-connection point are connected through an external circuit to form a parallel circuit.
  3. 3. The two-way parallel bobbin of claim 1 wherein the conductive connection (7) comprises a plurality of independent sets of tap winding posts, each set of tap winding posts comprising a first tap winding post (4 a) and a second tap winding post (5 a), the first tap winding post (4 a) and the second tap winding post (5 a) being fixed to the bobbin body (1) and arranged insulated from the body; The starting end of each coil (6) is respectively fixed on a corresponding first tapping winding post (4 a), and the ending end of each coil (6) is respectively fixed on a corresponding second tapping winding post (5 a); All first tapping winding posts (4 a) are electrically connected through a conductive bridging piece (3) to form a first common joint, all second tapping winding posts (5 a) are electrically connected through the conductive bridging piece (3) to form a second common joint, and the first common joint and the second common joint are connected through an external circuit to form a parallel circuit.
  4. 4. A two-way parallel bobbin as claimed in claim 1, characterized in that the beginning and ending ends of the coil (6) are fixed by means of a soldered connection.
  5. 5. A two-way parallel bobbin as claimed in claim 1, characterised in that the axes of adjacent two winding slots (2) are mutually parallel.
  6. 6. The bidirectional parallel winding frame according to claim 1, characterized in that at least one guide post (8) is arranged between two adjacent winding grooves, the extending direction of the guide post (8) is orthogonal to the extending direction of the winding groove (2), and a guide groove (9) is arranged on the surface of the guide post for reversing and positioning the enameled wire.
  7. 7. The bidirectional parallel winding frame as recited in claim 1, wherein the winding groove (2) is a groove continuously opened around the circumference of the winding frame body (1).
  8. 8. A voice coil motor comprising a bi-directional parallel bobbin as claimed in any one of claims 1 to 7.
  9. 9. A camera comprising the voice coil motor of claim 8.
  10. 10. An electronic device comprising the camera of claim 9.

Description

Bidirectional parallel winding frame, voice coil motor, camera and electronic equipment Technical Field The utility model relates to the field of camera voice coil motors, in particular to a bidirectional parallel winding frame, a voice coil motor, a camera and electronic equipment. Background As products gradually progress toward miniaturization, the load or lens weight continues to increase, which requires that the existing voice coil motor be able to generate more current and thus more thrust. However, the existing winding structure adopts a series structure, which is difficult to meet the requirement, and the application of the voice coil motor in the realization of high thrust in miniaturized equipment is limited. According to the thrust formula f=i×b×l of the voice coil motor (wherein F represents thrust in N; I represents current in a unit of a; B represents magnetic induction intensity in a unit of T; and L represents effective length of a conductor), it is known that the conventional tandem structure has difficulty in meeting the requirement of large thrust. Disclosure of utility model In view of this, the utility model provides a bidirectional parallel winding frame, which realizes parallel connection of multiple coils through a unique structural design and an innovative coil connection mode, and can remarkably improve the current in a single coil without changing input voltage, so that the thrust of a voice coil motor is greatly increased. The aim of the utility model is achieved by the following technical scheme: The bidirectional parallel winding frame comprises a winding frame body, at least two winding grooves, a plurality of independent coils and a parallel circuit structure, wherein the winding frame body is provided with a cylindrical main body structure extending along the axial direction, the at least two winding grooves are uniformly distributed along the circumferential direction of the winding frame body, each group of winding grooves encircle the winding frame body for one circle, the plurality of independent coils are wound in each winding groove, the coils in the adjacent winding grooves are wound alternately in the clockwise direction and the anticlockwise direction, and the starting end and the ending end of each coil are connected in parallel through a conductive connecting piece. The bidirectional parallel winding frame has obvious performance effect on improving the voice coil motor by virtue of the unique structural design and the innovative coil connection mode, and particularly, the thrust of the voice coil motor is greatly enhanced. The parallel structure has unique advantages when the bobbin is applied to a voice coil motor. The two-layer wire can be arranged on the same side, and current flows in two directions when passing through the two-layer wire. The adoption of the parallel structure can realize high thrust output based on the characteristic of a parallel circuit, wherein the voltages at two ends of each load are equal. This means that the parallel structure can output a larger current under the same magnetic field and obtain a larger thrust than other structures when the same voltage is applied and the same load is faced. It should be noted that each coil is correspondingly provided with a magnet, and the magnetic pole directions of the adjacent magnets are also alternately distributed because the coils in the adjacent winding grooves are alternately wound in the clockwise and anticlockwise directions. The parallel structure has high expansibility. The scheme is not limited to two coils, and can be increased to more than two coils according to actual requirements. By increasing the number of coils and maintaining the parallel structure, the diversified design requirements are satisfied. Preferably, the conductive connecting piece comprises a first common winding post and a second common winding post, the first common winding post and the second common winding post are fixed at two ends of the winding frame body and are arranged in an insulating way with the winding frame body, starting ends of all coils are fixed on the first common winding post and form a first common joint, terminating ends of all coils are fixed on the second common winding post and form a second common joint, and the first common joint and the second common joint are connected through an external circuit to form a parallel circuit. In the conventional winding mode, two welding spots are usually required for each coil to be connected with a circuit, and in the scheme, the starting ends of all coils are combined with a first common connection winding post to form a first common connection point, the ending ends of all coils are combined with a second common connection post to form a second common connection point, so that the combination of welding spots of two coils is skillfully realized, and meanwhile, the parallel connection is achieved. The design not only reduces the number of welding spot