GB2192678A - Spot-type disc brake - Google Patents
Spot-type disc brake Download PDFInfo
- Publication number
- GB2192678A GB2192678A GB08617296A GB8617296A GB2192678A GB 2192678 A GB2192678 A GB 2192678A GB 08617296 A GB08617296 A GB 08617296A GB 8617296 A GB8617296 A GB 8617296A GB 2192678 A GB2192678 A GB 2192678A
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- GB
- United Kingdom
- Prior art keywords
- brake
- disc
- frame
- guide
- spot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- 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
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
- F16D55/2265—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
- F16D55/22655—Constructional details of guide pins
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- 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
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
- F16D55/2265—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
- F16D55/227—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing by two or more pins
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- 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
- F16D65/0971—Resilient means interposed between pads and supporting members or other brake parts transmitting brake actuation force, e.g. elements interposed between brake piston and pad
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- 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
- F16D65/0974—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces acting on or in the vicinity of the pad rim in a direction substantially transverse to the brake disc axis
- F16D65/0977—Springs made from sheet metal
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- 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
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- 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
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D2055/0004—Parts or details of disc brakes
- F16D2055/0016—Brake calipers
- F16D2055/002—Brake calipers assembled from a plurality of parts
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- 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
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D2055/0004—Parts or details of disc brakes
- F16D2055/007—Pins holding the braking members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to a spot-type disc brake with a brake anchor plate (1), an arm (7) of which overlaps the edge of a brake disc (4) and which has supporting surfaces (9, 10) for brake shoes (11, 12), arranged on both sides of the brake disc, and guides (14) in which the brake shoes (11, 12) are displaceably mounted. To provide axially displaceable guide means for a brake frame (18) reaching around the brake anchor plate (1) and the brake shoes (11, 12) from outside and transmitting the actuating force of a brake-actuating device (22) to one brake shoe (11), guide pins (26) parallel to the axis are secured on the brake anchor plate (1), engaging in elastic guide sleeves (28) in guide holes (27) in a limb (25) of the brake frame (18) extending at the side of the brake disc. On the side of the brake disc (4) facing away from the guide pins (26), the brake frame (18) is, in addition, held on a guide member (39) which is mounted displaceably in the guides (14) for the brake shoes (11, 12). <IMAGE>
Description
SPECIFICATION
Spot-type disk brake
This invention relates to a spot-type disc brake, in particular for automotive vehicles, the disc brake comprising a brake disc, a pair of brake shoes, a brake carrier fixable laterally beside a brake disc, which brake carrier straddles the edge of the brake disc with at least one arm thereof and is provided with support surfaces for the brake shoes, which are arranged on opposite sides of the brake disc, and with guide means at which the brake shoes are supported slidably parallel to the axis of rotation of the brake disc, and a brake frame which straddles the brake disc and the brake shoes from the outside, which transmits the force of actuation of a brake actuating apparatus to one brake shoe and which is slidably guided by parallel guide pins for sliding in the direction of the axis of rotation of the brake disc, said guide pins being coupled to the brake carrier and engaging guide bores provided in a leg of the brake frame which extends laterally beside the brake disc.
In a prior-art spot-type disc brake of the indicated type (British patent specification 1,545,825), the guide pins are slidably abutted directly against the walls of the rigid guide bores and in this way constitute a rigid column-type guide for the brake frame by which the brake frame is exclusively connected to the brake carrier. This known embodiment of a spot-type disc brake has the disadvantage tha the spacing of the guide pins and guide bores have to be observed with great accuracy during manufacture in order to avoid jamming of the guides. The further disadvantages of oblique wear, elevated residual brake torque on the release of the brake and the phenomenon of irregular rubbing are observed in the known spot-type disc brake.
It is, furthermore, known in the art (West
German printed and examined patent application No. 2,804,808) to provide in a spot-type disc brake elastic guide sleeves in the guide bores located in a caliper as a means to guide a brake caliper straddling the brake disc and the brake -shoes, the guide sleeves being provided radially from the outside at two parallel guide pins fastened to the brake carrier, and to support the brake caliper on the side of the brake disc facing away from the guide pins, at the duter edge of the carrier plate of the brake shoe, the brake caliper and the brake shoe being urged against each other, on one hand, and against the brake carrier, on the other hand, by means of a spring clip.In this prior-art spot-type disc brake, the brake shoes are comparatively long in the circumferential direction of the brake disc and are, therefore, sensitive to oblique wear. It is, moreover, a disadvantage that the brake caliper requires to be detached from the brake carrier for a change of the brake shoes.
The present invention has for an object to create a spot-type disc brake of the kind mentioned in the beginning which is distinguished by a low degree of oblique wear, a good brake release behaviour and insensitiveness to irregular brake rubbing. Further, the guide means of the brake frame is to have a lowcost configuration offering ease of manufacture.
According to the present invention there is provided a spot-type disc brake comprising a brake disc, a pair of brake shoes, a brake carrier fixable laterally beside the brake disc, which brake carrier straddles the edge of said brake disc with at least one arm thereof and is provided with support surfaces for the brake shoes, which are arranged on opposite sides of said brake disc, and with guide means at which said brake shoes are supported slidably parallel to the axis of rotation of said brake disc, and a brake frame which straddles said brake disc and said brake shoes from the outside, which transmits the force of actuation of a brake actuating apparatus to one said brake shoe and which is slidably guided by parallel guide pins for sliding in the direction of the axis of rotation of said brake disc, said guide pins being coupled to said brake carrier and engaging guide bores provided in a leg of the brake frame which extends laterally beside the brake disc on one side thereof, characterized in that elastic guide sleeves are disposed in the said guide bores, through which elastic guide sleeves said brake frame is supported elastically and yieldingly at the said guide pins, and in that on the other side of said brake disc, which other side faces away from the said guide pins, the said brake frame is retained at a guide element, which is slidably supported by the said guide means for said brake shoes. In this way, a guide means for the brake frame of a spot-type disc brake is created in which elastic and rigid guide elements are combined. The requirements the guide of a brake frame has to meet are thus fulfilled in a particularly advantageous manner.The brake frame is stabilized in its position with respect to the brake disc with the necessary accuracy, but without compulsive forces coming about which impair its easy slidability. Owing to the elasticity of the guide sleeves, any rattling noise when-the brake is in its release position and any irregular rubbing of the brake during braking action are avoided. The guide means features ease of motion and is insensitive to dirt and corrosion. For this reason, the residual brake torque upon the release of the brake remains very small even in unfavourable operating conditions.
According to an advantageous embodiment of these teachings of the present invention, the guide means for the brake shoes are con stituted by respective parallel guide pins which penetrate through bores in the guide element and in the brake shoes and are detachably fixed within the brake carrier. Such a type of guide of the brake shoes is a simple design and allows an easy change of the brake shoes in the radial direction with respect to the brake disc.
In a particularly simple-design embodiment of an inventive spot-type disc brake, the guide element for the brake frame is formed by a carrier plate of one brake shoe. If a particular adaptation of the brake shoes to the inventive brake is to be avoided, then the guide element may, according to a further proposition of the invention, be formed by an intermediate metal sheet or plate which is interposed between a respective leg of the brake frame on the other side of the brake disc and the respective brake shoe. For the retainment of the brake frame, the intermediate metal sheet or plate is preferably furnished with margins which are bent over and are running in the direction of a secant and which embrace the leg of the brake frame on the other side of the brake disc.According to another proposition of the invention, the guide element may, as an alternative, be formed by flat sheet- or plate metal strips which are inserted in depressions in the leg of the brake frame on the other side of the brake disc. The overall axial length of the brake can be kept small in this way. Preferably, the sheet or plate metal strips form a Ushaped or a T-shaped yoke.
It has proved particularly expedient when the guide element is coupled to the leg of the brake frame on the other side of the brake disc by means of a plug connection formed by a recess in one component and by a projection at the other component which engages said recess. A connection of this type is inexpensive in manufacture and easy to assemble.
Said projection may preferably be constituted by a cylindrical protuberance which is formed by deep drawing in the intermediate metal sheet or plate metal strip. If the projection is to be positioned at the leg of the brake frame on the other side of the brake disc it may, according to the invention, be constituted by the head of a plug which is-pressed in. The projection may, alternatively, be constituted by a cup formed from sheet or plate metal whose bottom is affixed to the guide element or to the brake frame by riveting or by welding. According to still another inventive proposition, the guide element may be coupled undetachably to the leg of the brake frame on the other side of the brake disc, for example by means of a grooved pin.Furthermore, the guide element may be constituted by attachments formed in one piece with and at the leg of the brake frame on the other side of the brake disc, in lieu of constituting a separate component.
A particularly advantageous embodiment of the spot-type disc brake is, according to the present invention, achieved also in that the brake frame is constituted by two castings screwed together and in that that leg of the frame which is located on the one side of the brake disc and on which the brake carrier is fixed forms the housing of a hydraulic brake actuating cylinder and contains the guide bores on either side of said housing. Furthermore, the arm of the brake carrier which straddles the brake disc may expediently be configured as a respective complete frame into whose openings the brake shoes and the guide element are introducible radially from the outside with respect to the axis of rotation of the brake disc. In this way, a particularly easy change of the brake shoes will be rendered possible, without detachment of the brake frame and brake carrier.The brake shoes and the guide element may, advantageously, be braced with the guides in the brake carrier by means of a spring clip in order to avoid rattling noise when the brake is in its release position.
An advantageous set-up of the inventive spot-type disc brake is, moreover, attained in that the brake carrier includes a frame which straddles the brake disc and is positioned radially outside with respect to the axis of rotation of the brake disc and is carried by another frame disposed parallel to the brake disc, which other frame penetrates through the respective opening of the brake frame and which has one leg in common with the first mentioned frame of the brake carrier. In particular due to the leg which the two frames of the brake carrier have in common, a very stiff, open grating is formed which renders it possible to adopt small cross-sectional areas of the legs and to realize a correspondingly lightweight design of the brake carrier.In addition, the guide pins for the brake shoes can be fastened in a particularly simple manner in the legs of the first mentioned frame which extend, indeed, parallel to the brake disc.
Embodiments of the invention will now be described in more detail with reference to the accompanying drawings, in which:
Figure 1 is a longitudinal section through a spot-type disc brake according to one embodiment of the present invention;
Figure 2 is a back view of the spot-type disc brake of Figure 1.
Figure 3 is a top plan view of the spot-type disc brake of Figure 1.
Figure 4 shows a variant of the support of the brake frame of the spot-type disc brake according to Figure 1.
Figure 5 is a longitudinal section through a further embodiment of a spot-type disc brake with a guide element configured as an intermediate metal sheet or plate;
Figure 6 is a view of a guide element of the spot-type disc brake according to Figure 5;
Figure 7 is a longitudinal section through an embodiment of spot-type disc brake with a guide element configured in the shape of an intermediate metal sheet or plate which is angled off;
Figure 8 is a longitudinal section through still another embodiment of a spot-type disc brake with a guide element in the shape of a yoke;
Figure 9 shows a variant of the mode of fixation of the guide element according to Figure 8;
Figures 10-13 show-design variants of guide elements constituted by sheet or plate metal strips;;
Figure 14 is a longitudinal section through an embodiment of spot-type disc brake with a guide element configured in one piece with the brake frame; and
Figure 15 is a perspective view of the frame leg of the spot-type disc brake of Figure 14.
The spot-type disc brakes illustrated in the
Figures are substantially identical except for the design of the guide elements of their supports. For this reason, identical components of the individual embodiments are, in the following, identified by identical reference numerals.
The spot-type disc brake shown in Figures 1 to 3 includes a brake carrier 1 which is fixable, by means of two fixation eyes 2, 3, to the wheel suspension of a vehicle (not shown), laterally beside a brake disc 4. The brake carrier 1 comprises a frame 5 directed substantially parallel to the brake disc and having a central opening 6, and of a frame 7 arranged at right angles to frame 5, straddling the edge of the brake disc and having a central opening 8 in which support surfaces 9, 10 are located for two brake shoes 11, 12 positioned opposite each other. One stem or leg
13 is common to both frames 5, 7.In order to guide and support the brake shoes 11, 12, retaining pins 14 are provided which pass through the opening 8, are fastened detachably in bores in the leg 13 and in the opposite leg 15 of the frame 7 and penetrate through bores in carrier plates 16, 17 of the brake shoes 11, 12.
The frame 5 of the brake carrier 1 and the brake shoes 11, 12 are straddled by a brake frame 18 which is composed of a cast, Ushaped yoke 19 and a stem or leg 20 which are interconnected by screws 21. The leg 20 forms the housing of a hydraulic brake actuating cylinder 22 with a piston 23 which penetrates through the opening 6 and is in abutment directly against the carrier plate 17 of the brake shoe 12. Through a connecting bore 24, said brake actuating cylinder 22 is linked to brake piping of a hydraulic brake unit. A leg 25 of the brake frame 18 which is formed by the yoke 19 is in direct abutment against the carrier plate 16 of the brake shoe 11 in order to transmit to the brake shoe 11 the force of brake actuation acting on the housing of the brake actuating cylinder 22 when the
brake is being operated.
The brake frame 18 with its legs 20, 25 is supported and guided at the brake carrier 1 on either side of the brake disc 4. Parallel guide pins 26 are fixed to the frame 5 of the brake carrier 1 which penetrate through guide bores 27 in the leg 20 on either side of the brake actuating cylinder 22. Said guide pins 26 are pressed into bores provided in the brake carrier 1. The diameter of said guide bores 27 is larger than the diameter of said guide pins 26. Within the annular chamber formed in this way, elastic guide sleeves 28 are disposed which are fastened in the guide bores 27 and which surround the guide pins 26 without play. Said guide sleeves 28 project beyond the free end of the guide pins 26 and are closed there by means of a cap 29. The other end of said guide sleeves 28 is furnished with a sealing lip 30 which is abutted against the surface of the guide pins 26.A sliding sleeve 31 is positioned within the guide sleeves 28 which reduces the sliding resistance between said guide sleeves 28 and said guide pins 26. The guide sleeves 28 may, moreover, contain a lubricant.
To guide the frame stem or leg 25, the carrier plate 16 is formed with a cylindrical bore 32 which is engaged by the head of a plug 33 fixed in the frame leg 25. In this way, said carrier plate 16 constitutes a guide element by means of which the brake frame 18 is guided, in addition to the guide pins 26, also at the retaining pins 14 which represent the guide means for the brake shoes. An elevated guide length by which the forces occurring due to inertia can be well controlled is achieved by the forementioned double guide of the brake frame 18 on either side of the brake disc 4.In order to keep the guide of the brake shoes 11, 12 at the retaining pins
14, which is subject to play, free of rattling noise, a cross-shaped leaf-type spring 34 is provided whose spring leg 35 catches beneath the retaining pins 14 and whose spring leg 36 rests on the radially outwardly directed front faces of the carrier plates 16, 17. The inclination of- the spring leg 36 with respect to the guide plane of the retaining pins favours the brake shoes to lift off from the brake disc upon the release of the brake.
According to the version shown in Figure 4, a sheet or plate metal cup 37 may be fastened to the leg 25 with the aid of a grooved pin 38 in order to couple the carrier plate 16 to the leg 25 of the brake frame 18. When urging it into the bore 32 in the carrier plate
16, the bulged edge of the sheet or plate metal cup 37 is slightly compressible and, thus, forms a rattle-free support for the brake frame 18 at the carrier plate 16.
The spot-type disc brake described so far is easy to manufacture without much expense.
The said elastic guide sleeves will balance tolerances of the spacing of the bores and form an easy-motion, non-clamping and anti-noise guide means for the brake frame. Due to its additional support at the brake shoe 11, the brake frame is sufficiently stabilized in its position relative to the brake carrier and the stresses of the elastic guide sleeves 28 are reduced. Mounting of the brake, too, is easy and suitable for large series production. It will be expedient in this regard if the leg 20 is plugged onto the guide pins 26 of the brake carrier 1 before screwing the brake frame 18 together.
Figure 5 shows a variant of the spot-type disc brake of Figures 1 to 4 in which the guide element to support and bear the leg 25 of the brake frame 18 at the retaining pins 14 is constituted by an intermediate metal sheet or plate 39 having roughly the size of the carrier plate- 16 (see Figure 6) and being interposed between the carrier plate 16 and the stem 25. Said intermediate metal sheet or plate 39 is furnished with two bores 40 for the retaining pins 14 to pass through them. In its centre, a cylindrical protuberance 41 is formed by deep drawing which engages a bore 42 in the stem 25 and constitutes the bearing for said stem 25. Just as the embodiments described in the following, this embodiment offers the advantage that no specific provisions are required at the brake shoes for the purpose of supporting the brake frame.
For this reason, the brake shoes allow to be designed exchangeable with the brake shoes of other spot-type disc brakes.
Figure 7 shows a spot-type disc brake with an intermediate metal sheet or plate 43 constituting the guide element and embracing, through angled-off margins 44, the leg 25 of the brake frame 18 radially from the inside and from the outside. Just like the intermediate metal- sheet or plate 39, the intermediate metal sheet or plate 43 is suspended at the retaining pins 14. In this configuration, the angled-off margins 44 are abutted against the leg 25 with a spring action and thus ensure a rattle-free connection.
Other variants of the inventive spot-type disc brake are illustrated in Figures 8 and 9. In order to be able to minimize the overall axial length of the spot-type disc brake, the guide element is constituted by a yoke 45 and 46, respectively which is formed by sheet or plate metal strips and is each countersunk in grooves 47 provided in the front face of the leg 25. The yoke 45, respectively 46 may be
T-shaped or U-shaped (see Figures 12, 13) and is suspended at the retaining pins 14.
The yoke 45 is fastened to the front face of the leg 25 on each side of the carrier plate 16 by means of respective grooved pins 48. Figure 9 shows a different mode of fixation. In this case, the yoke 46 arranged sunk is provided with an angled-off portion 49 which is fixed to the bottom side of the leg 25 by means of a grooved pin 48.
Further embodiments of a guide element arranged countersunk in grooves 47 provided in the brake frame 18 are shown in Figures 10 to 13. The guide elements may be formed optionally by two separate sheet or plate metal strips 50, 51 (Figure 11), by a Ushaped yoke 52 (Figure 12) or by a T-shaped yoke 53 (Figure 13). The sheet or plate metal strips 50, 51 as well as the yokes 52, 53 are embeddable in the grooves 47 extending substantially in the radial direction in the leg 25 of the brake frame 18 and are suspended, with their bores 54, from the retaining pins 14. To give support to the leg 25, the sheet or plate metal strips 50, 51 and the yokes 52, 53 are furnished with cylindrical protuberances 55 formed by deep drawing which engage blind-end bores 56 disposed in the region of the grooves 47 in the leg 25. Owing to this design, additional retaining means, such as grooved pins or similar, can be omitted.
The guide element serving to support the brake frame 18 at the retaining pins 14 may, as an alternative, be configured in one piece with the brake frame 18 as is shown in Figures 14 and 15. In this design, two eyes 57 are formed, by casting, at the leg 25 of the brake frame 18, which eyes are furnished with through bores 58 for the retaining pins 14.
This embodiment is a particularly simple design, but it requires a iarger axial width of the opening 8 in the brake carrier 1.
Claims (17)
1. A spot-type disc brake comprising a brake disc, a pair of brake shoes, a brake carrier fixable laterally beside the brake disc, which brake carrier straddles the edge of said brake disc with at least one arm thereof and is provided with support surfaces for the brake shoes, which are arranged on opposite sides of said brake disc, and with guides means at which said brake shoes are supported slidably parallel to the axis of rotation of said brake disc, and a brake frame which straddles said brake disc and said brake shoes from the outside, which transmits the force of actuation of a brake actuating apparatus to one said brake shoe and which is slidably guided by parallel guide pins for sliding in the direction of the axis of rotation of said brake disc, said guide pins being coupled to said brake carrier and engaging guide bores provided in a leg of the brake frame which extends laterally beside the brake disc on one side thereof, characterized in that elastic guide sleeves (28) are disposed in the said guide bores (27), through which elastic guide sleeves said brake frame (18) is supported elastically and yieldingly at the said guide pins (26), and in that on the other side of said brake disc (4), which other side faces away from the said guide pins (26), the said brake frame (18) is retained at a guide element (16, 39, 43, 45, 46, 50, 51, 52, 53, 57) which is slidably supported by the said guide means (14) for said brake shoes (11, 12).
2. A spbt-type disc brake as claimed in claim 1, characterized in that the guide means for said brake shoes (11, 12) are constituted by respective parallel guide pins (14) which penetrate through bores (40, 54) in the said guide element (39, 50, 51, 52, 53) and in the said brake shoes (11, 12) and are detachably fixed within the said brake carrier (1).
3. A spot-type disc brake as claimed in claim 1 or claim 2, characterized in that the said guide element is formed by a carrier plate (16) of one said brake shoe (11).
4. A spot-type disc brake as claimed in claim 1 or claim 2 characterized in that the said guide element is formed by an intermediate metal sheet or plate (39, 43, 45, 46, 50, 51, 52, 53) which is interposed between a respective leg (25) of the said brake frame (18) on said other side of the brake disc, and the respective brake shoe (11).
5. A spot-type disc brake as claimed in claim 4, characterized in that for the retainment of the said brake frame (18), the said intermediate metal sheet or plate (43) is furnished with margins (44) which are bent over and are running in the direction of a secant and which embrace the said leg (25) of said brake frame (18) on the other side of the brake disc.
6. A spot-type disc brake as claimed in any one of claims 1, 2, 4 or 5, characterized in that the said guide element is formed by flat sheet or plate metal strips (45, 46, 50, 51, 52, 53) which are inserted in grooves (47) in the said leg (25) of said brake frame (18) on the other side of the brake disc.
7. A spot-type disc brake as claimed in claim 6, characterized in that the said sheet or plate metal strips for a U-shaped or a Tshaped yoke (45, 46, 52, 53).
8. A spot-type disc brake as claimed in any one of the preceding claims, characterized in that the said guide element (16, 39, 43, 45, 46, 50, 51, 52, 53) is coupled to the said leg (25) of said brake frame (18) on the other side of the brake disc by means of a plug connection formed by a recess (32, 42, 56) in one component (25) and by a projection (33, 37, 41, 55) at the other component (16) which engages said recess.
9. A spot-type disc brack as claimed in claim 8, characterized in-that the said projection is constituted by a cylindrical protuberance (41, 55) which is formed by deep drawing in the said intermediate metal sheet or plate (39) or in the said sheet or plate metal strips (50, 51, 52, 53).
10. A spot-type disc brake as claimed in claim 8, characterized in that the said projection is constituted by the head of a plug (33) which is pressed in.
11. A spot-type disc brake as claimed in
claim 8, characterized in that the said projectin is constituted by a sheet or plate metal cup (37) whose bottom is affixed to one said component (25) preferably by riveting or by welding.
12. An apparatus as claimed in any one of claims 1 to 7, characterized in that the said guide element is coupled undetachably to the said leg (25) of the said brake frame (18) on the other side of the brake disc, for example by means of a grooved pin (48).
13. A spot-type disc brake as claimed in claim 1, characterized in that the said guide element is constituted by attachments (57) formed in one piece with the said leg (25) of the said brake frame (18) on the other side of the brake disc.
14. A spot-type disc brake as claimed in any one of the preceding claims, characterized in that the said brake frame (18) is constituted by two castings (19, 20) screwed together and in that that leg (20) which is located on the one side of the brake disc- on which the said brake carrier (1) is fixed forms the housing of a hydraulic brake actuating cylinder (22) and contains the said guide bores (27) on either side of the said housing.
15. A spot-type disc brake as claimed in any one of the preceding claims, characterized in that the said brake shoes (11, 12) and the said guide element (16) are braced with the said guide means (14) in said brake carrier (1) by means of a spring clip (34).
16. A spot-type disc brake as claimed in any one of the preceding claims, characterized in that the said arm of the said brake carrier (1) which straddles the said brake disc (4) is configured as a complete frame (7) having an opening (8) into which the said brake shoes (11, 12) and the said guide element (16, 39, 50, 51, 52, 53) are introducible radially from the outside with respect to the axis of rotation of the said brake disc (4).
17. A spot-type disc brake as claimed in any one of the preceding claims, characterized in that the brake carrier (1) includes a frame (7) which straddles the said brake disc (4) and is positioned radially outside with respect to the axis of rotation of said brake disc (4) and is carried by another frame (5) disposed parallel to the said brake disc (4) which said other frame (5) penetrates through the respective opening of the said brake frame (18) and has one leg (13) in common with the first mentioned frame (7) of the brake carrier.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853526937 DE3526937C2 (en) | 1985-07-27 | 1985-07-27 | Part brake disc brake, in particular for motor vehicles |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8617296D0 GB8617296D0 (en) | 1986-08-20 |
| GB2192678A true GB2192678A (en) | 1988-01-20 |
| GB2192678B GB2192678B (en) | 1989-08-16 |
Family
ID=6276950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8617296A Expired GB2192678B (en) | 1985-07-27 | 1986-07-16 | Spot-type disk brake |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE3526937C2 (en) |
| FR (1) | FR2585428B1 (en) |
| GB (1) | GB2192678B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110308900A1 (en) * | 2008-11-25 | 2011-12-22 | Olaf Drewes | Brake system for disk brakes |
| WO2013049915A1 (en) * | 2011-10-07 | 2013-04-11 | Interkob Holdings Ltd. | Brake apparatus and brake shoe retainer |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4015167A1 (en) * | 1990-05-11 | 1991-11-14 | Teves Gmbh Alfred | Housing for brake pads on disc brake - is held in place by leaf spring which is clipped to supporting frame |
| DE102009021619B4 (en) * | 2009-05-16 | 2013-07-18 | Löwen Entertainment GmbH | Game machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1220016A (en) * | 1968-05-29 | 1971-01-20 | Kelsey Hayes Co | Disk brake embodying caliper positioner |
| GB2028940A (en) * | 1978-08-28 | 1980-03-12 | Bendix Corp | Disc Brake Assembly |
| GB2049846A (en) * | 1979-04-21 | 1980-12-31 | Teves Gmbh Alfred | Floating caliper disc brake |
| EP0076202A1 (en) * | 1981-09-25 | 1983-04-06 | Bendiberica S.A. | Disc brake with a caliper axially shiftable on a fixed support |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3661232A (en) * | 1969-03-25 | 1972-05-09 | Aisin Seiki | Spot type disk brake |
| GB1258680A (en) * | 1969-09-10 | 1971-12-30 | ||
| FR2252034A5 (en) * | 1973-11-16 | 1975-06-13 | Ferodo Sa | Disc brake with single acting cylinder - has slotted plate to transmit cylinder reaction to opposite brake pad |
| JPS51121665A (en) * | 1975-04-17 | 1976-10-25 | Tokico Ltd | Disk brake |
| DE2557302C2 (en) * | 1975-12-19 | 1985-08-08 | Volkswagenwerk Ag, 3180 Wolfsburg | Partially lined disc brakes for motor vehicles |
| CS194004B1 (en) * | 1977-10-17 | 1979-11-30 | Miroslav Novotny | Disc brake |
| DE2804808B2 (en) * | 1978-02-04 | 1981-04-16 | Alfred Teves Gmbh, 6000 Frankfurt | Brake shoe holder for a partially lined disc brake, in particular for motor vehicles |
| DE3520086A1 (en) * | 1985-06-05 | 1986-12-11 | Alfred Teves Gmbh, 6000 Frankfurt | PARTICULAR FLOATING CALIPER BRAKE, ESPECIALLY FOR MOTOR VEHICLES |
-
1985
- 1985-07-27 DE DE19853526937 patent/DE3526937C2/en not_active Expired - Fee Related
-
1986
- 1986-07-16 GB GB8617296A patent/GB2192678B/en not_active Expired
- 1986-07-28 FR FR8610883A patent/FR2585428B1/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1220016A (en) * | 1968-05-29 | 1971-01-20 | Kelsey Hayes Co | Disk brake embodying caliper positioner |
| GB2028940A (en) * | 1978-08-28 | 1980-03-12 | Bendix Corp | Disc Brake Assembly |
| GB2049846A (en) * | 1979-04-21 | 1980-12-31 | Teves Gmbh Alfred | Floating caliper disc brake |
| EP0076202A1 (en) * | 1981-09-25 | 1983-04-06 | Bendiberica S.A. | Disc brake with a caliper axially shiftable on a fixed support |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110308900A1 (en) * | 2008-11-25 | 2011-12-22 | Olaf Drewes | Brake system for disk brakes |
| WO2013049915A1 (en) * | 2011-10-07 | 2013-04-11 | Interkob Holdings Ltd. | Brake apparatus and brake shoe retainer |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2192678B (en) | 1989-08-16 |
| GB8617296D0 (en) | 1986-08-20 |
| FR2585428B1 (en) | 1989-06-23 |
| FR2585428A1 (en) | 1987-01-30 |
| DE3526937A1 (en) | 1987-02-05 |
| DE3526937C2 (en) | 1996-01-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930716 |