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
  • F16D65/02—Braking members; Mounting thereof
  • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
  • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
• • 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
  • F16D65/02—Braking members; Mounting thereof
  • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
  • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
  • F16D65/095—Pivots or supporting members therefor
  • F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
  • F16D65/0973—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces
  • F16D65/0979—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces acting on the rear side of the pad or an element affixed thereto, e.g. spring clips securing the pad to the brake piston or caliper
• • 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
  • F16D2125/00—Components of actuators
  • F16D2125/02—Fluid-pressure mechanisms
  • F16D2125/06—Pistons

Definitions

• the invention relates to a brake pad with a retaining spring arrangement for releasably holding a brake pad on a piston of a brake pad disc brake and for bracing the brake pad against the brake pad disc brake.
• a spring element which not only serves to fix the carrier plate of the brake pad on the piston, but at the same time serves as a permanently acting preload between the components involved (brake caliper, brake carrier, brake pads), so that rattling noises when not actuated Brake can be effectively suppressed.
• the known spring element is snapped into the groove of the piston with a central part-circular part and has two mirror-shaped arms which extend from the central part into the radially outer, hammer-head-shaped ends of the carrier plate and each have an axially outward end as well as have part bent down.
• a pad retaining spring is also known from DE 196 01 435 AI, which is connected to the friction lining by means of a base part and to the brake piston by means of at least one resilient section, in that the base part rests at least in regions on the side of the carrier plate facing away from the friction lining, between the Carrier plate and the brake piston extends and engages with the resilient portion in a groove on the end face of the brake piston.
• the resilient sections can only be made very short, so that their spring identification can be varied only slightly. This results in a tolerance of this arrangement.
• a brake pad for releasable attachment to a piston of a partial brake disc brake comprises a retaining spring arrangement with at least one spring element which is provided for engagement in a groove of the piston and is fastened to the brake lining by means of a retaining element.
• the brake lining preferably comprises a carrier plate and a friction lining applied thereon, the holding element being, in particular, permanently connected to the carrier plate.
• the retaining spring arrangement comprises only a single spring element, which rests with at least two spring sections under spring preload in the groove in the piston or is locked in the groove.
• the spring element can additionally apply a force component in the radial direction to the brake pad. This force component in the radial direction, based on the brake disc axis, is used to brace the brake pads, a brake caliper and possibly a brake carrier against one another in order to suppress unwanted rattling noises.
• the retaining spring arrangement therefore fulfills a dual function. It can be provided that the spring element has a closed shape. In this case, the spring element can preferably be bent from a wire ring.
• the spring element is designed to be open and has several, in particular separate, spring sections which are arranged in the piston. fit and exert the differently directed force components on the brake pad. Overall, the described variants can be kept to a minimum, with only a single spring element.
• a plurality of spring elements preferably two or three, are provided, each of which rests in the piston groove under spring preload.
• the individual spring elements can be designed more simply and therefore more cost-effectively.
• the different functions of the retaining spring arrangement can be divided between the individual spring elements. This allows the targeted design and configuration of the spring elements.
• two first spring elements preferably arranged opposite one another with respect to the piston axis, serve to axially attach the brake lining to the piston.
• Another second spring element acts on the brake pad with a spring force perpendicular to the contact surface between the brake pad and piston and thus serves for the radial bracing of the brake pad of the brake caliper and possibly the brake carrier.
• the spring element or the spring elements are each designed as a wire or sheet metal spring. This allows a particularly simple manufacture.
• the holding element is designed as a holding member integrated in the brake lining or the carrier plate.
• the bias of the spring element acting on the brake pad can be influenced in a targeted manner by the design of at least one holding member or another contact point of the spring element on the brake pad.
• such holding members can also are integrally formed on a holding plate that is permanently connected to the brake lining or the carrier plate.
• a design in the form of eyelets or hooks, in which the spring element can be easily attached, has proven to be an advantageous embodiment of the holding members.
• the retaining spring arrangement is combined with a customary damping measure on the brake lining for noise suppression.
• the retaining plate which is permanently connected to the brake lining and to which at least one spring element is attached, is designed as a damping plate or other damping layer.
• the holding elements for the spring element can also be designed as locking washers. These axial locking washers are then preferably attached to a projection of the brake pad and overlap the spring element for holding. Such projections can preferably be integrally formed on the support plate or on the holding plate as a passage or other elevation.
• Special embodiments of the invention are characterized in that the holding elements are each at least partially inserted into the brake lining or the carrier plate, preferably as an inserted holding pin or rivet, the holding pin or the rivet axially engaging over the spring element and thus fastening it to the brake lining.
• the retaining spring arrangement described is particularly expedient due to its functionality and, moreover, requires only a small axial installation space.
• the retaining spring arrangement according to the invention can be used both with different brake pad designs and with different types of partial disc brakes, e.g. B. floating caliper brakes, fixed caliper brakes, electromechanical brakes, combined service / parking brakes etc., find universal use.
• Figure 1 is a partially sectioned side view of a
• FIG. 2a-c show three views of a brake pad with retaining spring arrangement in an analogous embodiment to FIG. 1;
• Figure 3a-b two views of a brake pad with retaining spring arrangement in a second embodiment with a one-piece spring element
• Figure 4-5 two sectioned partial views of other variants for alternative fixation of the spring element according to the invention on the brake pad.
• the floating caliper brake 6 essentially comprises a brake caliper, not shown, as well as brake pads 1 arranged on both sides of the brake disc
• the brake caliper 8 is based on a brake, not shown disc axis axially slidably mounted on the brake carrier 9.
• the brake linings 1 arranged on both sides of the brake disc are accommodated in the brake carrier 9 so as to be displaceable in the axial direction via lateral lugs 10 in order to transmit circumferential brake forces.
• An actuation unit with a piston 5 is provided for actuating the floating caliper brake 6, ie for pressing the brake linings 1 against the brake disc, the actuation unit preferably being actuated hydraulically, mechanically or electromechanically.
• a first brake pad 1 is brought into direct contact with the brake disc by displacement of the piston 5 and a second brake pad is brought into indirect contact with the opposite axial displacement of the brake caliper 8.
• the circumferential braking forces occurring on the brake linings 1 are introduced directly into the brake carrier 9 fixed to the vehicle via the side lugs 10.
• the first brake lining 1 on the piston side is coupled to the movement of the piston 5 by means of a retaining spring arrangement 7.
• This retaining spring arrangement 7 essentially comprises two first 14, 14 'and a second spring element 15.
• the spring elements 14, 14', 15 are locked in a groove 11 of the piston 5 and on the other hand attached to the brake pad 1.
• FIGS. 2a-c show further details of the retaining spring arrangement.
• FIGS. 2a-c show a brake lining 1 on the piston side, which comprises a carrier plate 2 and a friction lining 3 applied thereon.
• the friction lining 3 is provided for abutment on the brake disc, not shown.
• a holding plate 12 is preferably permanently attached, for example by gluing.
• On the holding plate 12 are in turn a plurality of holding members 13, the spring elements 14, 14 ', 15 fixed.
• the individual holding members 13 are designed in particular as hooks or eyelets, which each encompass the spring elements 14, 14 ', 15.
• the spring elements 14, 14 ', 15 are arranged with first 16 or second 17 spring sections under spring preload in a groove 11 on the piston 5 and thus hold the brake lining 1 axially on the piston 5.
• the spring elements 14, 14 ', 15 are particularly advantageously bent from simple spring wire sections and can be designed both open and in the form of a closed wire ring.
• designs of the spring elements 14, 14 ', 15 made of spring sheet metal are also possible in principle.
• the first two spring elements 14, 14 ' are arranged opposite one another with respect to the piston axis 18. They are locked in the piston groove 11 with first spring sections 16 and exert an axial spring force on the brake lining 1. As a result, the brake pad 1 is pressed against the piston 5 and coupled to the piston movement during the brake application.
• the second spring element 15 acts on the brake lining 1 by means of a second spring section 17 via a force component directed perpendicular to the piston axis 18.
• the brake pad 1 is braced radially via the piston 5 with the brake caliper 8 and thus also with the brake carrier 9. This ensures that the brake pad 1 does not rattle against the brake carrier 9.
• spring elements 14, 14 ', 15 allows a separation of functions within the retaining spring arrangement in 'Axial pad holder on the piston' and 'rattle-free radial bracing of the brake pad, brake caliper and brake carrier'. Furthermore, the targeted interpretation and design of the individual spring elements is permitted.
• FIGS. 3a and 3b show two views of a brake lining 1 on the piston side with an alternative retaining spring arrangement 7 for releasable attachment to the piston.
• the one-piece spring element 4 made of spring wire is formed in mirror image and comprises three spring sections 4b, 4d, 4f, each of which is locked under spring tension in a groove 11 running on the outside of the piston.
• the first two spring sections 4b and 4f ensure the axial attachment of the brake pad 1 to the piston, as described above.
• the second spring section 4d acts radially, ie vertically in FIGS. 3a and 3b, on the brake lining.
• the spring element 4 also comprises two free end sections 4a, 4g, which extend perpendicularly to the piston axis from the mirror-image first spring sections 4b, 4f and are each pressed against the brake lining 1 by means of an eyelet-like holding member 13a, 13d.
• a holding plate 12 is fastened, on which the holding members 13a-d are integrally formed. The spring element 4 is thus held on the brake pad 1 via the holding plate 12.
• the holding plate 12 is preferably designed as a lacquered, rubberized or other coated damping plate. As a result, both the mounting of the spring element 4 and the damping function are carried out by a single component. This Damping functon is not necessarily necessary for the invention, so that the holding plate 12 can also be designed, for example, as a conventional sheet metal component.
• the axial connection between the brake pad 1 and the piston 5 is a snap-in connection, namely via the piston groove 11, or a clamping connection, namely via the holding members 13a to 13d.
• the radial suspension is essentially set via the shape and the clamping of the U-shaped spring sections 4c, 4e and the end sections 4a, 4g.
• the holding members can be designed in a wide variety of shapes, for example in the form of a hook, see 13b, 13c, or an eyelet, see 13a, 13d, according to FIGS. 3a and 3b.
• the respective holding members 13, 13a-d either to be molded onto a holding plate 12 or to be integrated directly into the brake pad 1 or the carrier plate 2.
• the holding elements can also be designed as separate components according to FIGS. 4, 5, which are correspondingly non-releasably connected to the brake lining 1 or the carrier plate.
• the carrier plate 2 has on its side facing away from the friction lining 3 a projection 19 m in the form of a sheet metal penetration, on which a separate locking washer 20 acts.
• a projection 19 can also be provided on a holding plate 12 connected to the brake pad 1.
• the locking washer 20 is clawed on the projection 19 and at the same time engages over a section of the spring element 4, which is thereby held on the brake pad 1.
• a retaining pin or rivet 21 is fastened in the carrier plate 2 and at the same time engages over the spring element 4 for holding on the brake pad.
• the fastening of the spring element 4 by means of a locking washer 20 or a retaining pin or rivet 21 can in particular also be used without an additional retaining plate.
• a change in the spring preload can also be achieved by appropriately designing the contact surfaces of the spring element 4 on the holding plate 12 or directly on the carrier plate 2. For example, penetrations or other elevations or depressions can be provided on the holding plate 12 or on the carrier plate 2, against which the spring element 4 rests. By suitable design of the contact surfaces of the spring element 4 on the holding plate 12 or the carrier plate 2, the desired prestress can thus be achieved for the spring element 4 in almost all directions.
• the holding spring arrangement 7 allows particularly versatile design options by using spring elements 4, 14, 14 ', 15 and holding elements 12, 13, 20, 21. This permits the universal use of the retaining spring arrangement with different brake pad designs as well as different types of partial pad disc brakes.

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

Priority Applications (3)

Applications Claiming Priority (4)

Publications (1)

Family

ID=26051920

Family Applications (1)

Country Status (4)

Cited By (2)

Families Citing this family (1)

Citations (4)

Family Cites Families (1)

• 2000
  • 2000-02-18 WO PCT/EP2000/001373 patent/WO2000049307A1/de not_active Ceased
  • 2000-02-18 JP JP2000600018A patent/JP4693243B2/ja not_active Expired - Lifetime
  • 2000-02-18 DE DE50003526T patent/DE50003526D1/de not_active Expired - Lifetime
  • 2000-02-18 EP EP00909217A patent/EP1153226B1/de not_active Expired - Lifetime

Patent Citations (4)

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