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EP-4249764-B1 - BRAKE DUST FILTERING APPARATUS AND VEHICLE

EP4249764B1EP 4249764 B1EP4249764 B1EP 4249764B1EP-4249764-B1

Inventors

  • ZHENG, Bowen
  • ZHANG, XIAOQIAN

Dates

Publication Date
20260513
Application Date
20201123

Claims (15)

  1. A brake dust filtering apparatus (100), wherein the brake dust filtering apparatus is configured to be mounted at a brake caliper (200) of a vehicle or a part around the brake caliper (200), and comprises: a base (10) which is provided with multiple first through holes (101); and a filter screen (30) which is disposed on a side of the base (10) configured to be close to the brake caliper (200) and covers the first through holes (101); the brake dust filtering apparatus (100) being characterized in that it further comprises: a scribing sheet (20) which is provided with multiple second through holes (201) and forms slidable connection with the base (10); and a drive member (40) which is configured for driving the scribing sheet (20) to slide with respect to the base (10), so as to form an off-state in which each of the first through holes (101) and each of the second through holes (201) are staggered and an on-state in which the multiple first through holes (101) at least partially overlap with the multiple second through holes (201).
  2. The brake dust filtering apparatus (100) according to claim 1, wherein the scribing sheet (20) and the base (10) keep being in the off-state when a temperature does not exceed a preset value, and the scribing sheet (20) and the base (10) keep being in the on-state when a temperature exceeds a preset value.
  3. The brake dust filtering apparatus (100) according to claim 2, wherein the drive member (40) is a thermosensitive spring (41) of which one end is connected to the base (10) and another end is connected to the scribing sheet (20); the thermosensitive spring (41) is configured to deform by sensing a temperature, so as to keep the scribing sheet (20) and the base (10) in the off-state or in the on-state.
  4. The brake dust filtering apparatus (100) according to claim 3, wherein the thermosensitive spring (41) comprises a first mounting portion (411), a connecting portion (412), and a second mounting portion (413) which are connected sequentially; the first mounting portion (411) and the second mounting portion (413) are respectively connected with the base (10) and the scribing sheet (20).
  5. The brake dust filtering apparatus (100) according to claim 4, wherein one end of the base (10) is provided with a first longitudinal aperture (11) and a stepped boss (12), the boss (12) matches with the first mounting portion (411) and is configured to limit the first mounting portion (411); the scribing sheet (20) is provided with a first column part (21) corresponding to the first longitudinal aperture (11) and protruding towards the base (10), the first column part (21) passes through the first longitudinal aperture (11) and matches with the second mounting portion (413) to limit the second mounting portion (413).
  6. The brake dust filtering apparatus (100) according to claim 5, further comprising a first fastening member (50), wherein the first fastening member (50) is configured to match with the first column part (21) to limit the second mounting portion (413).
  7. The brake dust filtering apparatus (100) according to claim 6, wherein the first column part (21) is cylindrical and is provided with screw thread on a surface thereof; the first fastening member (50) is a nut.
  8. The brake dust filtering apparatus (100) according to claim 7, wherein another end of the base (10) is provided with a second longitudinal aperture (16); the scribing sheet (20) is provided with a second column part (22) corresponding to the second longitudinal aperture (16) and protruding towards the base (10), the second column part (22) is slidably sleeved in the second longitudinal aperture (16).
  9. The brake dust filtering apparatus (100) according to any one of claims 1-8, wherein the scribing sheet(20) is located at a side of the base (10) away from the brake caliper (200); the filter screen (30) is fixed at the base (100) in a preset manner, and the preset manner comprises one or more of clamping connection, bolt connection, and lock pin connection.
  10. The brake dust filtering apparatus (100) according to claim 9, wherein the filter screen (30) is rectangular, three side surfaces of the filter screen (30) are respectively provided with protruding clamp strips (31), and the other side surface is a plane (32); the base (10) is provided with a groove (13) configured to clamp the clamp strips (31) and an abutting protrusion (14) configured to abut against the plane (32).
  11. The brake dust filtering apparatus (100) according to any one of claims 1-10, wherein the base (10), the scribing sheet (20), and the filter screen (30) are all of an arc shape matching with the brake caliper (200).
  12. The brake dust filtering apparatus (100) according to any one of claims 1-11, wherein two ends of the base (10) are provided with mounting structures (15) configured to receive second fastening members and thereby fix the brake dust filtering apparatus (100) at the brake caliper (200) or a part around the brake caliper (200).
  13. The brake dust filtering apparatus (100) according to any one of claims 1-12, wherein the drive member (40) comprises an electronically controlled steering gear connected with the scribing sheet (20) and configured to drive the scribing sheet (20) to slide relative to the base (10) based on a brake state of the vehicle.
  14. The brake dust filtering apparatus (100) according to claim 13, further comprising a brake controller connected with the electronically controlled steering gear and configured to receive a brake pedal signal of the vehicle to identify the brake state of the vehicle and send the brake state of the vehicle to the electronically controlled steering gear.
  15. A vehicle, comprising a steering knuckle, a hub bearing (400), a matched brake caliper (200), and a ventilated brake plate (300); wherein the vehicle further comprises a brake dust filtering apparatus (100) according to any one of claims 1-14.

Description

TECHNICAL FIELD The present invention relates to the technical field of vehicles, and in particular, to a brake dust filtering apparatus and a vehicle. 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. 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. Brake 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 micro-particles 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 the prior art, 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 absorbed by the filter box or the filter screen without difference, which seriously affects service life of the filter screen. In a reference document D1 (DE102017008421A1), the invention relates to a brake dust particle filter (16) for a disc brake assembly comprising a brake disc and a brake calliper. At least one tongue (28a-28d) is arranged or designed in the housing interior (20) of the housing (18) of the brake dust particle filter (16), wherein at least one portion of said tongue (28a-28d) projects radially inwardly. The tongue (28a-28d) forms a support (40) for a filter medium (32) of the brake dust particle filter (16). The filter medium (32) also covers at least part of, in particular all of, the surface of the tongue (28a-28d). The housing (18) has the shape of a ring segment. It can be used at least for accommodating part of the brake disc in the housing interior (20). A first housing side wall and a second housing side wall (19) and a housing peripheral wall (26) all form parts of the housing (18). The housing side walls (19) are axially spaced apart from one another. The housing peripheral wall (18) is arranged radially outwardly in the peripheral direction of the housing (18). The housing peripheral wall (26) is arranged or designed between the first housing side wall and the second housing side wall (19). The brake dust particle filter (16) is designed to capture particles produced during braking. In a reference document D2 (US10072716B2), disclosed is a method for capturing particles ejected by friction braking elements (2) of a braking system (1, 2) with disk brakes (1) of a vehicle. The braking system is equipped with a capture conduit (3) taking a form adapted to accommodate the friction braking elements (2) and to conduct, while the vehicle is moving, an air flow for cooling the friction braking elements, the conduit integrating a shutter (6) with a plate (6a) positioned upstream of the friction braking elements (2), and a unit (5) for capturing particles ejected by the friction braking elements (2). Furthermore, the shutter (6) is controlled so as to move the plate (6a) between a position of closing the conduit (3), set for vehicle travel speeds lower than a predefined threshold speed VS, and at least one position of a