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EP-4253175-B1 - PROTECTION DEVICE, DUST REMOVAL DEVICE, WHEEL RIM STRUCTURE AND AUTOMOBILE

EP4253175B1EP 4253175 B1EP4253175 B1EP 4253175B1EP-4253175-B1

Inventors

  • ZHENG, Bowen
  • ZHANG, XIAOQIAN

Dates

Publication Date
20260513
Application Date
20201124

Claims (14)

  1. A protection device, comprising a first protection structure (1), a second protection structure (2), and a guide structure (3); wherein the first protection structure (1) comprises a first blade (11) and a first rotating ring (12), and one end of the first blade (11) is connected to the first rotating ring (12); the second protection structure (2) comprises a second blade (21) and a second rotating ring (22), and one end of the second blade (21) is connected to the second rotating ring (22); the first rotating ring (12) is sleeved outside the second rotating ring (22), the guide structure (3) is arranged between the first rotating ring (12) and the second rotating ring (22), the first rotating ring (12) is rotatable relative to the second rotating ring (22), so that the first blade (11) and the second blade (12) overlap or are staggered; the guide structure (3) is configured for limiting a rotation travel of the first rotating ring (12) relative to the second rotating ring (22); wherein the protection device is characterized in that : the first rotating ring (12) is provided with a limiting hole (121), a notch (122), and a mounting boss (123), the mounting boss (123) is connected to a side of the notch (122) close to the second blade (21), and a side of the mounting boss (123) close to the limiting hole (121) has a limiting board (1231); the guide structure (3) comprises a first protrusion (31), a stopping sheet (32), and a resilient member (33), wherein one end of the stopping sheet (32) is connected to the second rotating ring (22), and another end of the stopping sheet (32) passes through the notch (122); one end of the first protrusion (31) is connected to the second rotating ring (22), and another end of the first protrusion (31) passes through the limiting hole (121); one end of the resilient member (33) is connected to the stopping sheet (32), and another end of the resilient member (33) is connected to the limiting board (1231); the resilient member (33) is elastically deformable along a length direction of the mounting boss (123), and the first protrusion (31) is movable in the limiting hole (121).
  2. The protection device according to claim 1, wherein the second rotating ring (22) further has a connection part configured to be fixed with a hub (4) of a vehicle; in a condition that the second rotating ring (22) is connected with the hub (4), the second rotating ring (22) is coaxial with the hub (4), and the second blade (21) covers a first gaps in gaps of a spoke (5) of the vehicle; the second protection structure (2) is synchronously rotatable with the hub (4), and the second protection structure (2) is capable of driving the first protection structure (1) to rotate such that the first blade (11) of the first protection structure (1) covers or exposes a second gap in the gaps of the spoke (5) of the vehicle; the second gap is a remained gap in the gaps of the spoke (5) other than the first gap.
  3. The protection device according to claim 2, wherein in a condition that the vehicle is static, the first protection structure (1) and the second protection structure (2) are static relative to each other, and the first blade (11) and the second blade (21) are stagger such that the first blade (11) covers the second gap in the gaps of the spoke (5); in a condition that the vehicle drives at a constant speed or drives at an increasing speed, the first protection structure (1) and the second protection structure (2) rotate synchronously, and the first blade (11) and the second blade (21) are stagger such that the first blade (11) covers the second gap in the gaps of the spoke (5); in a condition that the vehicle drives at a decreasing speed, the first protection structure (1) and the second protection structure (2) rotate relative to each other and drive the first blade (11) and the second blade (21) at least partially overlap so as to at least partially expose the second gap in the gaps of the spoke(5).
  4. The protection device according to any one of claims 1-3, wherein in a condition that the first blade (11) and the second blade (21) are stagger, the resilient member (33) is in an unstressed state, and the first protrusion (31) is at an end of the limiting hole (121) close to the mounting boss (123); in a condition that the first blade (11) and the second blade (21) overlap, the resilient member (33) is in a compressed state, and the first protrusion (31) is at an end of the limiting hole (121) away from the mounting boss (123).
  5. The protection device according to any one of claims 1-3, wherein in a condition that the first blade (11) and the second blade (21) are stagger, the resilient member (33) is in an unstressed state, and the first protrusion (31) is at an end of the limiting hole (121) away from the mounting boss (123); in a condition that the first blade (11) and the second blade (21) overlap, the resilient member (33) is in a tensile state, and the first protrusion (31) is at an end of the limiting hole (121) close to the mounting boss (123).
  6. The protection device according to any one of claims 1-5, wherein a length of the mounting boss (123) is not less than a length of the limiting hole (121).
  7. The protection device according to any one of claims 1-6, wherein the limiting hole (121) is a strip hole, and the limiting hole (121) is configured to limit a relative rotation distance between the first protection structure (1) and the second protection structure (2).
  8. The protection device according to any one of claims 1-7, wherein an end of the second blade (21) is provided with a limit guide groove (211), and an end of the first blade (11) is provided with a second protrusion (111), the second protrusion (111) slidably matches the limit guide groove (211), and relative rotation between the first blade (11) and the second blade (21) is guided and limited by sliding of the second protrusion (111) in the limit guide groove (211).
  9. A dust removal device, comprising an adsorption structure (8) and a protection device according to any one of claims 1-8, wherein the adsorption structure (8) comprises a casing frame (81), the casing frame (81) is provided therein with at least two third blades (82) or a mesh structure, the third blades (82) or the mesh structure is configured to adsorb dust.
  10. The dust removal device according to claim 9, wherein the adsorption structure (8) is further provided with a connecting member (83), the connecting member (83) is configured to connect the adsorption structure (8) to an inner side of a wheel flange (6) of an automobile.
  11. The dust removal device according to claim 9, wherein the adsorption structure (8) is further provided with a connecting member (83), the adsorption structure (8) is fixedly connected to the second protection structure (2) through the connecting member (83), and the adsorption structure (8) is arranged at a position at an inner side of the first blade (11) and capable of at least partially covering the second gap.
  12. A wheel rim structure, comprising a dust removal device according to any one of claims 9-11, wherein the second rotating ring (22) is sleeved outside an automobile hub (4) and is arranged co-axially with the automobile hub (4), the adsorption structure (8) is fixedly connected to a wheel flange (6) through the connecting member (83), and the adsorption structure (8) is arranged at a position at an inner side of the first blade (11).
  13. The wheel rim structure according to claim 12, wherein an end of the first blade (11) is connected to the first rotating ring (12), another end of the first blade (11) extends to an inner surface of the wheel flange (6) and is in contact with the inner surface of the wheel flange (6); an end of the second blade (21) is connected to the second rotating ring (22), another end of the second blade (21) extends to the inner surface of the wheel flange (6) and is in contact with the inner surface of the wheel flange (6).
  14. An automobile, comprising a wheel rim structure according to any one of claims 12-13.

Description

TECHNICAL FIELD This specification relates to the technical field of parts of automobiles, and in particular, to a protection device, a dust removal device, a wheel rim structure, and an automobile. BACKGROUND With more and more rapid development of economy of our country, holdings of cars appears a tendence of increasing year by year. However, with the increase of the number of cars, environmental problems brought by cars are also increasingly serious. How to make vehicles be more environmentally friendly, and how to reduce dust emissions of vehicles so as to enhance market competitiveness are also topics studied competitively by major engine manufacturers. Many countries, led by the United States, are paying close attention to the problem of emission of brake dust. At present, automotive research organizations of many countries are studying generation principles and control methods of brake dust. It can be predicted that laws and regulations limiting brake dust will be implemented in the future. If domestic auto companies want to meet global requirements, they especially need to arrange research and development in advance to win stronger market competitiveness for themselves. A brake system of a car generates friction by a pressure between a metal brake plate and a friction piece composed of composite friction material. In the friction pair formed by the brake plate and the friction piece, in order to ensure that the vehicle can obtain a stable friction torque under various working conditions, slight wear of the brake plate and the friction material may be caused during braking, so it is inevitable to produce wear particles of different sizes, namely brake dust, during the wear process. Brake dust will attach to the vehicle's body and rims and affects the appearance of the vehicle. At the same time, the brake dust will also be discharged into the atmosphere with an air flow generated when the vehicle drives and pollute the environment. How to reduce or eliminate the pollution of brake dust to the environment is a major pain point in the research of automobile enterprises at present. Friction piece dust of passenger cars mainly consists of the following two types. The first is low-temperature mechanical friction dust, which is mainly produced by mechanical shedding of both sides caused by mutually shearing of rough surfaces of a friction piece and of a brake plate at the micro level. This type of dust has particle size of mostly above 10 µm, is mainly attached to surfaces of rims or deposited on the ground, and will not generate a great impact on the environment and human health. The second is high-temperature chemical agglutination dust, which is mainly microparticles produced by gas generated by decomposition of chemical substances in friction materials at high temperature and then cooled and condensed. This type of dust has a particle size of mostly below 10 µm, if it is discharged into the atmosphere, it will be suspended in the air for a long time and cause environmental pollution. At the same time, it is also prone to be inhaled by human bodies and cause disease. In conventional patents, dust around a brake caliper is absorbed by a filter box or a filter screen. Since they are in a normally open state, dust at edges of wheels and brake dust are adsorbed by the filter box or the filter screen without difference, which seriously affects service life of the filter screen. Therefore, in order to solve the above problem, it is required to provide a protection device, a dust removal device, a wheel rim structure, and an automobile. In a reference document D1 (CN111845686A), the invention relates to the technical field of automobiles, in particular to a gas conduction mechanism, a brake dust absorption device and an automobile. The gas conduction mechanism comprises a first air guide pipe and a second air guide pipe. One end of the first air guide pipe is connected with ato-be-installed object, and the first air guide pipe is provided with a first ventilation opening. The first air guide pipe is sleeved with the second air guide pipe, the first air guide pipe is in rolling connection with the second air guide pipe, and the second air guide pipe is provided with asecond ventilation opening and a mass block; the mass block determines a first deceleration and a second deceleration of the to-be-installed object by adjusting the gravity center of the second air guide pipe; the second air guide pipe rotates under the action of the first deceleration, so that the first ventilation opening communicates with the second ventilation opening, and air exhaust is achieved; the second air guide pipe rotates under the action of the second deceleration, so that the first ventilation opening and the second ventilation opening are staggered, and air blocking is achieved. The gas conduction mechanism provided by the invention has the characteristics of not additionally consuming energy and prolonging the service life of the du