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CN-122026679-A - Camera motor, camera module and electronic equipment

CN122026679ACN 122026679 ACN122026679 ACN 122026679ACN-122026679-A

Abstract

The application relates to the technical field of electronic equipment camera shooting, in particular to a camera motor, a camera module and electronic equipment. The application aims to solve the technical problem that lubricating grease overflows to influence a camera module. The embodiment of the application provides a camera motor, which comprises a rotor and a stator, wherein the stator is connected with the rotor through a kinematic pair, the kinematic pair is lubricated by grease, a first groove is formed in the rotor, the flow speed of the grease can be gradually reduced when the surface of the rotor flows, the maximum distance between the first groove and the kinematic pair is smaller than or equal to 10mm, the grease can be ensured to smoothly flow to the vicinity of the first groove, the width of the first groove is 0.01-0.3 mm, the capillary effect can be ensured, the overflowed grease can enter the first groove under the action of the capillary effect, the grease is prevented from overflowing to other positions, and the influence on a camera module is avoided.

Inventors

  • CAI BIN
  • FAN XIANKAI
  • KANG WENSHUO

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260512
Application Date
20250515

Claims (18)

  1. 1. A camera motor, comprising: A mover; the stator is connected with the rotor through a kinematic pair, the kinematic pair is lubricated through lubricating grease, a first groove is formed in the rotor, the maximum distance between the first groove and the kinematic pair is smaller than or equal to 10mm, and the width of the first groove is 0.01-0.3 mm.
  2. 2. The camera motor according to claim 1, wherein the mover includes a first surface, the first groove being provided on the first surface; The rotor is provided with a first channel, the stator is provided with a second channel, the first channel is communicated with the second channel, the central lines of the first channel and the second channel are perpendicular to the first surface, and the first channel is used for installing a lens; The first groove is located between the kinematic pair and the first channel.
  3. 3. The camera motor of claim 2, wherein the first groove has a depth of 0.01mm-0.3mm.
  4. 4. A camera motor according to claim 2 or 3, wherein the angle between the opposing groove walls of the first groove is 15 ° -145 °.
  5. 5. The camera motor according to any one of claims 2 to 4, wherein a first protrusion is further provided on the mover, the first protrusion being provided on the first surface between the first groove and the first channel.
  6. 6. The camera motor of claim 5, wherein the first protrusion has a thickness of 0.01mm-0.2mm.
  7. 7. The camera motor according to any one of claims 2 to 6, wherein the stator has a second surface facing the first surface, the first and second surfaces being parallel to a moving direction of the mover, the kinematic pair being disposed between the first and second surfaces; The second surface is provided with a second groove, and the second groove is positioned between the kinematic pair and the second channel.
  8. 8. The camera motor of claim 7, wherein a second protrusion is further provided on the stator, the second protrusion being provided on the second surface and between the second groove and the second channel.
  9. 9. The camera motor according to claim 7 or 8, wherein the kinematic pair includes a ball, the second surface is provided with a receiving groove, a portion of the ball is disposed in the receiving groove, and the ball is in contact with the first surface; The stator is also provided with a third groove, and one end of the third groove is communicated with the accommodating groove.
  10. 10. The camera motor according to claim 9, wherein the stator further comprises a limiting portion, the limiting portion is disposed around the periphery of the mover, and the other end of the third groove is located on the limiting portion.
  11. 11. The camera motor according to claim 10, wherein a fourth groove is provided on the stopper portion, the fourth groove being in communication with the third groove.
  12. 12. The camera motor according to claim 1, wherein a mounting groove is provided on the mover, the mounting groove is used for mounting a lens, the kinematic pair comprises a slide shaft provided on the stator, and the mover is slidably connected with the slide shaft; The rotor comprises a third surface, the third surface is positioned between the mounting groove and the sliding shaft, the central line of the sliding shaft is perpendicular to the third surface, and the first groove is formed in the third surface.
  13. 13. The camera motor of claim 12, wherein a portion of the first groove adjacent to the mover edge has an opening.
  14. 14. The camera motor according to claim 1, wherein the kinematic pair includes a sliding portion, the mover is connected to the sliding portion, a chute is provided on the stator, the sliding portion is slidably connected to the chute, and an extending direction of the first groove is parallel to a moving direction of the mover.
  15. 15. The camera motor of claim 14, wherein the mover includes a baffle.
  16. 16. The camera motor according to claim 14 or 15, wherein the mover is provided with a through hole, the mover further comprises a connecting piece, the connecting piece is arranged through the through hole, and the first groove is located at one side of the connecting piece away from the kinematic pair.
  17. 17. A camera module comprising a lens, a circuit board and the camera motor of any one of claims 1-16, the lens being disposed on the camera motor, the circuit board being located on a side of the camera motor facing away from the lens.
  18. 18. An electronic device comprising a motherboard and the camera module of claim 17, wherein the circuit board is electrically connected to the motherboard.

Description

Camera motor, camera module and electronic equipment Technical Field The application relates to the technical field of electronic equipment camera shooting, in particular to a camera motor, a camera module and electronic equipment. Background The camera motor generally comprises a rotor and a stator, wherein the rotor and the stator are connected through a kinematic pair, and the rotor can move relative to the stator. In order to reduce the friction between the rotor and the stator, grease is usually added on the kinematic pair, however, the grease is easy to overflow, and the camera module is affected. Disclosure of Invention The embodiment of the application provides a camera motor, a camera module and electronic equipment, which can avoid grease overflow and avoid influencing the camera module. In a first aspect, an embodiment of the application provides a camera motor, which comprises a rotor and a stator, wherein the stator is connected with the rotor through a kinematic pair, the kinematic pair is lubricated by grease, a first groove is formed in the rotor, the maximum distance between the first groove and the kinematic pair is smaller than or equal to 10mm, and the width of the first groove is 0.01-0.3 mm. Because the lubricating grease can receive the resistance when the rotor surface flows, the velocity of flow of lubricating grease can reduce gradually, and the maximum distance between first recess and the kinematic pair is less than or equal to 10mm, can guarantee that the lubricating grease can flow to near the first recess smoothly, and the width of first recess is 0.01mm-0.3mm, can guarantee the effect of capillary effect for the lubricating grease that overflows can get into first recess under the effect of capillary effect, avoids the lubricating grease to overflow to other positions, produces the influence to the camera module. In some embodiments, which may include the above embodiments, the mover includes a first surface, and the first groove is disposed on the first surface. The rotor is provided with a first channel, the stator is provided with a second channel, the first channel is communicated with the second channel, the central lines of the first channel and the second channel are perpendicular to the first surface, and the first channel is used for installing a lens. The first groove is positioned between the kinematic pair and the first channel. Because the surface energy of lubricating grease is smaller, the lubricating grease is separated out to the first channel, and the friction coefficient of the first channel can be reduced, so that the connection strength of the first channel and the lens is reduced, and the normal operation of the camera module is affected. The first groove is located between the kinematic pair and the first channel, and the first groove can drain the lubricating grease overflowing the kinematic pair, so that the lubricating grease is prevented from being separated out onto the first channel, the connection strength of the lens and the first channel is ensured, and the normal work of the camera module is ensured. In some embodiments, which may include the embodiments described above, the first groove has a depth of 0.01mm to 0.3mm. The greater the depth of the first groove, the greater the capacity of the first groove, which can accommodate more grease. Meanwhile, the depth of the first groove is also limited by the thickness of the mover and the positions of other parts on the mover. Therefore, a proper depth can be selected according to the actual requirements and the specific structure of the mover. In some embodiments, which may include the embodiments described above, the angle between the opposing groove walls of the first groove is 15 ° -145 °. The magnitude of the included angle also affects the capillary effect, and illustratively, when the included angle is smaller, the capillary effect is more remarkable, the speed of grease entering the first groove is faster, and when the included angle is too small or too large, the capillary effect is reduced, and the speed of grease entering the first groove is slower. Therefore, a proper included angle can be selected according to actual requirements. In some embodiments, which may include the above embodiments, a first protrusion is further provided on the mover, the first protrusion being provided on the first surface and between the first groove and the first channel. The first bulge can further block the grease from flowing to the direction close to the first channel, so that the normal use of the camera module is ensured. Meanwhile, the first bulge cannot influence the strength of the mover, and the phenomenon that the first groove is close to the edge of the first surface, so that stress concentration of the mover is caused is avoided. In some embodiments, which may include the above embodiments, the first protrusion has a thickness of 0.01mm to 0.2mm. When the rotor moves relative to the stator, the