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CN-121989866-A - Blowing device and image acquisition module

CN121989866ACN 121989866 ACN121989866 ACN 121989866ACN-121989866-A

Abstract

An air blowing device comprises a cavity, a piston, at least one elastic piece and a rotating piece. The cavity is provided with an air outlet. The piston is movably arranged in the cavity and provided with a piston head, and a gas accommodating space is formed between the piston head and the gas outlet. The elastic member is adjacent to the piston. The rotating member is coupled to the piston. The rotating piece is suitable for rotating to drive the piston to move relative to the cavity against the elastic force of the elastic piece so as to enable the piston head to be far away from the air outlet. The rotating piece is suitable for continuing to rotate to release the piston, so that the piston head moves towards the air outlet through the elastic force of the elastic piece, and the air in the air accommodating space is driven to be output through the air outlet. In addition, an image acquisition module comprising such a blowing device is also mentioned.

Inventors

  • Guan Qifu
  • LIU YANTING

Assignees

  • 群光电子股份有限公司

Dates

Publication Date
20260508
Application Date
20241106

Claims (13)

  1. 1. A blowing device, characterized by comprising: the cavity is provided with an air outlet; A piston movably disposed in the cavity and having a piston head, wherein a gas accommodating space is formed between the piston head and the gas outlet; At least one elastic member adjacent to the piston, and A rotating member coupled to the piston, Wherein the rotary member is adapted to be actuated to move the piston relative to the chamber against the elastic force of the elastic member to move the piston head away from the air outlet, The rotating piece is suitable for continuing to act to release the piston, so that the piston head moves towards the air outlet through the elastic force of the elastic piece, and the air in the air accommodating space is driven to be output through the air outlet.
  2. 2. The blowing apparatus of claim 1, further comprising a sealing ring, wherein the sealing ring is disposed at a periphery of the piston head and abuts an inner wall of the cavity.
  3. 3. The blowing apparatus of claim 1 wherein said chamber further has an opening relative to said air outlet, said piston further having a piston rod, said piston rod passing through said opening, one end of said piston rod being located within said chamber and connected to said piston head, the other end of said piston rod being adjacent to said resilient member.
  4. 4. The blowing apparatus of claim 1 wherein said rotary member has at least one driver at a periphery thereof, said piston having at least one follower, said at least one driver adapted to apply a force to said follower upon rotation of said rotary member to move said piston, said at least one driver adapted to disengage from said at least one follower upon continued rotation of said rotary member to release said at least one follower from said rotary member.
  5. 5. The blowing apparatus of claim 4 wherein said rotary member is a gear and includes at least one toothed section and at least one non-toothed section, said at least one driver being said at least one toothed section of said gear.
  6. 6. The blowing apparatus of claim 4, wherein said at least one follower is a pit or a bump.
  7. 7. The blowing apparatus of claim 4, wherein said at least one driver includes at least one guide rib extending in a direction oblique to the rotational axis of said rotary member at the periphery of said rotary member.
  8. 8. The blowing apparatus of claim 4 wherein said piston has a hollow portion, said rotary member is located within said hollow portion, said at least one driven portion includes at least one arm portion, said piston has at least one slot, said at least one arm portion is disposed through said at least one slot, one end portion of said at least one arm portion is adjacent to said resilient member, and the other end portion of said at least one arm portion is located within said hollow portion to form said at least one driven portion and is coupled to said rotary member.
  9. 9. The blowing device according to claim 1, wherein a rotational axis of said rotary member is perpendicular to a moving direction of said piston or parallel to a moving direction of said piston.
  10. 10. The blowing device of claim 1, further comprising an actuation unit, wherein the actuation unit is coupled to the rotating member and adapted to drive the rotating member in rotation.
  11. 11. The blowing device of claim 1, further comprising a chute, wherein the piston is slidably disposed in the chute, the chute being adapted to guide movement of the piston relative to the chamber.
  12. 12. An image acquisition module, comprising: An image acquisition device having a lens, and The blowing device according to any one of claims 1 to 11, for supplying the gas output from the gas outlet to the lens.
  13. 13. The image capture module of claim 12, further comprising a conduit, wherein one end of the conduit is connected to the air outlet and the other end of the conduit corresponds to the lens.

Description

Blowing device and image acquisition module Technical Field The present invention relates to a cleaning device and an image acquisition module, and more particularly to an air blowing device and an image acquisition module having the same. Background The driving auxiliary functions such as reversing and developing become standard equipment of the current vehicles, and the driving auxiliary functions are generally realized through a vehicle camera device. The imaging device for the vehicle is easy to cause the shielding of an imaging picture due to the fact that sand and dust and/or water drops remain on the surface of a lens in environments such as sand and dust, rain and the like, and can not give a real-time complete picture for driving. Disclosure of Invention The invention provides an air blowing device and an image acquisition module, which can effectively clean a lens by using a simple structure. The blowing device comprises a cavity, a piston, at least one elastic piece and a rotating piece. The cavity is provided with an air outlet. The piston is movably arranged in the cavity and provided with a piston head, and a gas accommodating space is formed between the piston head and the gas outlet. The elastic member is adjacent to the piston. The rotating member is coupled to the piston. The rotating piece is suitable for rotating to drive the piston to move relative to the cavity against the elastic force of the elastic piece so as to enable the piston head to be far away from the air outlet. The rotating piece is suitable for continuing to rotate to release the piston, so that the piston head moves towards the air outlet through the elastic force of the elastic piece, and the air in the air accommodating space is driven to be output through the air outlet. In an embodiment of the invention, the air blowing device further includes a sealing ring, wherein the sealing ring is disposed at a periphery of the piston head and abuts against an inner wall of the cavity. In an embodiment of the invention, the cavity further has an opening opposite to the air outlet, the piston further has a piston rod, the piston rod is disposed through the opening, one end of the piston rod is disposed in the cavity and connected to the piston head, and the other end of the piston rod is adjacent to the elastic member. In an embodiment of the invention, the periphery of the rotating member has at least one driving portion, the piston has at least one driven portion, the driving portion is adapted to apply force to the driven portion along with the rotation of the rotating member to drive the piston to move, and the driving portion is adapted to be separated from the driven portion along with the continued rotation of the rotating member to release the driven portion from the rotating member. In an embodiment of the invention, the rotating member is a gear and includes at least one toothed section and at least one non-toothed section, and the driving portion is a toothed section of the gear. In an embodiment of the invention, the driven portion is a recess or a bump. In an embodiment of the invention, the driving portion includes at least one guiding rib extending along a direction inclined to the rotation axis of the rotating member at the periphery of the rotating member. In an embodiment of the invention, the piston has a hollow portion, the rotating member is located in the hollow portion, the driven portion includes at least one arm portion, the piston has at least one slot, the arm portion is disposed through the slot, one end portion of the arm portion is adjacent to the elastic member, and the other end portion of the arm portion is located in the hollow portion to form the driven portion and is coupled to the rotating member. In an embodiment of the invention, the rotation axis of the rotating member is perpendicular to the moving direction of the piston or parallel to the moving direction of the piston. In an embodiment of the invention, the air blowing device further includes an actuating unit, wherein the actuating unit is coupled to the rotating member and is adapted to drive the rotating member to rotate. In an embodiment of the invention, the air blowing device further includes a chute, wherein the piston is slidably disposed in the chute, and the chute is adapted to guide the piston to move relative to the cavity. The image acquisition module comprises an image acquisition device and the blowing device. The image acquisition device is provided with a lens. The air blowing device is used for providing the air output by the air outlet to the lens. In an embodiment of the invention, the image acquisition module further includes a pipeline, wherein one end of the pipeline is connected to the air outlet, and the other end of the pipeline corresponds to the lens. Based on the above, the air blowing device of the invention drives the piston to retreat by the rotating member and drives the piston to advance by the elastic