Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D65/00—Parts or details
  • F16D65/0031—Devices for retaining friction material debris, e.g. dust collectors or filters

Definitions

• the invention relates to a suction connector housing for a brake dust suction device for a disc brake assembly.
• WO 2011/160976 A1 discloses a disc brake assembly furnished with a brake dust suction device in order to remove the brake dust produced during a braking event.
• the brake disc of the disc brake assembly is partially covered by two lateral cover parts of a housing which each delimit a lateral gap.
• a suction connector housing is connected to the cover parts in such a manner that the gaps communicate with a flow path in the suction connector housing.
• a suction line in which by means of a suction blower an air flow from the suction connector housing to a fine dust filter is produced is connected to the suction connector housing.
• At least one suction opening is provided in the suction connector housing and is configured as a suction slot which, in relation to the brake disc axis of rotation, extends at least partially in radial direction in the mounted state of the suction connector housing and comprises a changing slot width along its length at least in sections thereof.
• the embodiment as suction slot with a radial extension component makes it possible to areally take up brake dust from the brake disc during the rotation.
• the open cross section surface of the suction slot through which the brake dust is sucked away changes due to the changing slot width.
• the changing slot width of the suction slot has the advantage that, in respect to the dust suction output, a flow-optimized contour of the suction slot is provided.
• the slot width of the suction slot expands along its slot length at least in sections thereof radially from the exterior to the interior.
• the slot width of the suction slot is less than in a radially farther inwardly positioned section.
• the higher tangential speed component of the brake disc in the radially outwardly positioned rim region compensates the smaller slot width of the suction slot in this section.
• the greater slot width of the suction slot in the radially inwardly positioned section of the suction slot compensates the smaller tangential speed component in this section.
• the suction slot in the radially outwardly positioned region has the smallest slot width and in the radially inwardly positioned region the greatest slot width.
• the suction slot comprises at least along a partial section a continuously expanding slot width, in particular a uniformly continuously expanding slot width, so that the free cross section surface of this partial section in plan view has a triangular shape.
• the suction slot is comprised of at least two partial sections that differ in regard to the slot shape, wherein a partial section, as described above, comprises a continuously expanding slot width along its length and a further partial section, for example, comprises a constant slot width or a slot width which is expanding to a lesser extent, in particular in the radially outwardly positioned region of the suction slot.
• the suction slot can be comprised of precisely two afore described partial sections.
• At least one of the suction slots in relation to its inflow direction is positioned at an angle relative to the direction of the normal of the lateral friction surfaces of the brake disc.
• the inflow direction of the suction slot is slanted in or opposite to a rotational direction of the brake disc because thereby particles that are possibly swirled up by the friction surfaces of the brake disc can be separated better.
• the two suction arms can be arranged at a common tube piece to which the suction slots in the suction arms are connected in flow communication.
• the two suction arms can also be arranged at their own tube piece, respectively.
• the brake dust is guided from the suction slots to the common tube piece adjoining the discharge channel and connected thereto so that the brake dust from the tube piece is conveyed farther into the discharge channel.
• the tube piece can extend parallel to the discharge channel.
• the suction arms, the tube piece, and the discharge channel are each part of the suction connector housing.
• the invention relates also to a brake dust suction device for a disc brake assembly with an afore described suction connector housing and with a filter element for taking up sucked-away brake dust.
• the brake dust suction device can comprise a suction blower for generating a suction air flow.
• Fig. 2 a further perspective view of the disc brake assembly
• FIG. 3 in perspective individual illustration the suction connector housing
• FIG. 6 the suction connector housing in a view according to section line
• Fig. 7 the suction connector housing in a view according to section line B-B of Fig. 5.
• same components are provided with same reference characters.
• a disc brake assembly 1 which is used typically in motor vehicles and is formed as a vehicle friction disc.
• the disc brake assembly 1 comprises a brake disc 2, a brake caliper holder 3, and a brake caliper 4 which is the carrier of brake pads which contact the brake disc 2 in case of a braking event.
• the brake caliper 4 is floatingly supported at the brake caliper holder 3 which is arranged at a wheel support, for example.
• the invention is also usable on so-called fixed caliper brakes that do not have a relatively movable brake caliper component but comprise exclusively movable pistons. During a braking event, brake dust is produced by friction between the brake disc 2 and the brake pads.
• the disc brake assembly 1 is provided with a brake dust suction device 5 by means of which the brake dust which is produced at the brake disc 2 is sucked away and collected in a filter element.
• the brake dust suction device 5 comprises a suction connector housing 6 arranged adjacent to the brake disc 2 as well as a flowconducting component 7 (Fig. 2) that is connected to the suction connector housing 6 and through which the brake dust is supplied to the filter element, not illustrated, which is also part of the brake dust suction device 5.
• a suction blower can belong to the brake dust suction device 5 by means of which an air flow sucking away the brake dust is produced in the suction connector housing 6 and in the flowconducting component 7.
• the suction connector housing 6 comprises two suction arms 8 and 9 which branch off a common tube piece 10.
• the first suction arm 8 is straight
• the second suction arm 9 is of an angular configuration.
• the angled suction arm 9 comprises a first suction arm section 9a which is arranged immediately at the tube piece 10, a second suction arm section 9b which extends at an angle of approximately 45° in relation to the first suction arm section 9a, and a short third suction arm section 9c at the end which comprises, in relation to the second suction arm section 9b, an outer slanted edge at an angle of approximately 20°.
• the two suction arms 8, 9 are spaced apart from each other and engage about the brake disc 2 like a “U” whose bottom is formed by the tube piece 10 extending across the radial outer edge of the brake disc 2 and whose legs are formed by the suction arms 8 and 9, which are however displaced relative to each other by an angle of approximately 60°.
• a suction slot 12 or 13 is provided through which the brake dust produced at the brake disc upon a braking event is discharged.
• the suction slots 12, 13 in the suction arms 8, 9 are facing each other and in the mounted position are oriented toward the respective lateral friction surface of the brake disc 2.
• the suction slots 12 and 13 extend across a major portion of the length of the suction arms 8, 9 and are connected to the inwardly positioned flow space in the tube piece 10 so that the brake dust can be sucked into the tube piece 10 through the suction slots 12 and 13 and from there father into a discharge channel 1 1 of the brake dust suction device 5 at which the tube piece 10 is arranged and to which the tube piece 10 is connected in flow communication.
• the discharge channel 11 guides the brake dust via the flow-conducting component 7, to which is connected an outwardly bent end section 1 1 a of the discharge channel 1 1 , father in the direction of the filter element of the brake dust suction device 5. Also, the discharge channel 11 comprises a U-shape and engages in the mounted state about the radial outer edge of the brake disc 2, wherein the end section 11 a is bent outwardly at one leg of the U-shape.
• the suction slots 12 and 13 follow substantially the geometry of the suction arms 8, 9 and comprise - in relation to the axis of rotation of the brake disc 2 - an extension component in radial direction.
• the suction slots 12 and 13 comprise along their length at least in sections thereof a changing slot width which, in relation to the total length, expands radially from the exterior to the interior.
• the straight suction slot 12 in the first straight suction arm 8 comprises in a first radially outwardly positioned partial section a slot width which expands radially only minimally from the exterior to the interior. It is adjoined by a further partial section of the suction slot 12 in which the slot width expands more strongly.
• the first suction slot 12 has its greatest width at the radial inwardly positioned end of the first suction arm 8.
• the angled suction slot 13 comprises also three partial sections which are positioned angularly relative to each other.
• the first radially outwardly positioned partial section of the suction slot 13 in the suction arm section 9a comprises the smallest slot width which expands only minimally radially from the exterior to the interior.
• the second central partial section of the suction slot 13 in the suction arm section 9b exhibits a stronger expansion radially from the exterior to the interior.
• the third radially inwardly positioned partial section of the suction slot 13 in the suction arm section 9c comprises a rectangular cross section opening whose width corresponds to the maximum width in the preceding partial section.
• the enlargement of the slot width of the suction slots 12, 13 in the course oriented radially from the exterior to the interior represents a flow-optimized suction slot contour which makes it possible to realize a constant, or approximately constant, suction output in the suction slot along the suction slots 12, 13.
• the higher tangential speed component of the brake disc 2 in the radially outwardly positioned rim region corresponds to the smaller slot width of the suction slots 12, 13 in this section.
• the tangential speed component of the brake disc 2 is smaller which is compensated by the greater slot width of the suction slots 12, 13.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Braking Arrangements (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=85476182

Family Applications (1)

Country Status (2)

Citations (3)

Family Cites Families (3)

• 2022
  • 2022-03-10 DE DE102022105633.3A patent/DE102022105633A1/de active Pending
• 2023
  • 2023-03-02 WO PCT/EP2023/055254 patent/WO2023169911A1/en unknown

Patent Citations (3)

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