GB2111616A - Brake shoe guide and holding device for disc brakes - Google Patents

Brake shoe guide and holding device for disc brakes Download PDF

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Publication number
GB2111616A
GB2111616A GB08234129A GB8234129A GB2111616A GB 2111616 A GB2111616 A GB 2111616A GB 08234129 A GB08234129 A GB 08234129A GB 8234129 A GB8234129 A GB 8234129A GB 2111616 A GB2111616 A GB 2111616A
Authority
GB
United Kingdom
Prior art keywords
brake
saddle
spring
holding
bolts
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
Application number
GB08234129A
Other versions
GB2111616B (en
Inventor
Eberhard Muller
Michael Hunger
Bernd Georgi
Franz Wolf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZSCHOPAU MOTORRAD VEB
Original Assignee
ZSCHOPAU MOTORRAD VEB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZSCHOPAU MOTORRAD VEB filed Critical ZSCHOPAU MOTORRAD VEB
Publication of GB2111616A publication Critical patent/GB2111616A/en
Application granted granted Critical
Publication of GB2111616B publication Critical patent/GB2111616B/en
Expired legal-status Critical Current

Links

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
    • 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
    • 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
    • F16D55/228—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 separate actuating member for each side
    • 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

Abstract

A brake shoe guide and holding device for disc brakes, in which the brake shoes are held by two bolts (13, 14), and wherein a cross-shaped retaining spring 19 engages in grooves of the holding bolts and is constructed with two opposite arms with spring ends projecting into recesses (15, 16) of the brake saddle or with one or both of the other arms contacting inner surfaces of the brake saddle, thus avoiding the need for additional securing means for axial fastening of the holding bolts. <IMAGE>

Description

SPECIFICATION Brake shoe guide and holding device for disc brakes The invention relates to a brake shoe guide and holding device for a disc brake of the type in which the brake shoes comprising the brake lining and support plate are guided in a radially open shaft of the brake saddle and may be displaced in an axial direction, are supported in the peripheral direction of the brake disc and are maintained in the radial direction by two holding bolts which are disposed in an offset manner in the peripheral direction, which bolts pass through longitudinal holes in the support plate extending tangentially parallel to the brake disc and are held against axial displacement in the brake saddle by safety devices, wherein a retaining spring formed as a cross spring has its longitudinal elements supported via the two holding bolts and its transverse elements supported on the upper side of the support plates of the brake shoes.
In the case of known disc brakes of the above mentioned type, the holding bolts for the support plates of the brake shoes are prevented from axial displacement in the brake saddle by means of split pins, spring rings, springs or other safety devices.
German Patent Specification No. 1182087 discloses a brake shoe guide and holding device for a brake shoe consisting of a brake lining and a support plate of a fixed saddle, partly lined, disc brake. The brake shoes are displaceably guided in the axial direction in a radially open shaft of the brake saddle and are supported in the peripheral direction of the brake disc.
The brake shoes are held in the radial direction by two holding bolts which are disposed offset in the peripheral direction, which bolts pass through longitudinal holes in the support plates extending parallel to the brake disc tangents. The holding bolts, which are guided in the brake saddle, are each held against axial displacement by a safety spring. A retaining spring formed as a cross spring has its longitudinal elements supported via the two holding bolts and its transverse elements supported on the upper side of the support plates of the brake shoes. In the case of the known embodiments, it is disadvantageous that additional safety elements are required for the holding bolts. Difficulties also arise with respect to the assembly and dismantling of the brake shoes, 'as the safety elements, in particular spring rings, may only be mounted with difficulty.
German Offenlegungsschrift No. 2222945 discloses a further embodiment of a partly lined disc brake, comprising a saddle which is displaceable with respect to a housing, a return spring operating between the saddle and members to take up torque and at least one brake shoe guide component for the determination of radial position and for retaining a brake shoe arrangement which may be directly and indirectly actuated, in which the return spring serves simultaneously to lock the brake shoe guide component.
The return spring operates between the saddle and a fixed housing and is fastened to the saddle by bolts behind the brake shoe arrangement which may be directly actuated. The brake shoe guide component comprises a rod-like member having two shafts connected to a central portion. The support plates are guided on said shafts. The return spring presses simultaneously against the central portion so that the brake shoe guide component is clamped in a fixed manner.
However, this embodiment additionally requires a further spring which is disposed on the shafts of the brake guide component and lies against the support plates of the brake shoes. It is disadvantageous, in this respect, that for retaining and returning the brake shoes two springs are required, thereby increasing material and construction costs.
An object of this invention is to provide a particularly simply constructed and economic safety device for the holding bolts in the brake saddle of a disc brake, more especially to provide a device which enables additional safety elements for axial fastening of the holding bolts to be omitted.
According to one aspect of the invention, the retaining spring has its longitudinal elements engaging in grooves of the holding bolts and is constructed on both sides with its spring ends projecting into recesses in the brake saddle.
In a further embodiment of the invention, the retaining spring has its longitudinal elements engaging in grooves of the holding bolts and has one or both ends of its transverse elements lying against the inner surface of the brake saddle.
In these embodiments the retaining spring is simultaneously formed as a safety device for the holding bolts, so that the holding bolts are prevented from axial displacement in the brake saddle, Assembly and dismantling of the brake shoes may be readily carried out, as only the retaining spring has to be pushed in. As a result of the supporting of the longitudinal elements in grooves of the holding bolts and the spring ends in recesses of the brake saddle or the location of the ends of the transverse elements against the two inner surfaces of the brake saddle, the retaining spring is fixed in the axial direction. This safety device may be produced economically, as only the spring ends of the retaining spring have to be extended in accordance with the size of the recess in the brake saddle or the inner surfaces of the brake saddle and no additional safety devices are required.The recesses may possibly be cast integrally with the brake saddle. The spring ends of the retaining spring are conveniently bent at right angles.
In the case of a further embodiment, a cover cap for the saddle is provided in a known manner, which cap comprises a projection extending into the region of the front faces of the holding bolts.
This embodiment enables an additional securing of the holding bolts against axial displacement in the event of possible fracture of the retaining spring.
The recesses for the spring ends in the brake saddle may be formed such that they are open on one side, the contact surfaces for the spring ends and for the holding bolts in the brake saddle being diametrically opposite.
The invention will now be exemplified with reference to an embodiment thereof shown in the accompanying drawings, in which: Figure 1 shows a cross-section through a disc brake; Figure 2 shows a cross-section transverse to Figure 1; Figure 3 is a top view of a retaining spring; Figure 4 shows the retaining spring of Figure 3 in side view; Figure 5 is a sectional side view of a further embodiment of the retaining spring; and Figure 6 is a top view of a brake saddle.
The disc brake comprises a brake saddle 1 having brake cylinders 2, 3 and pistons 4, 5 which are displaceable therein. The two brake shoes 6, 7 comprise support plates 8, 9 and brake linings 10, 11, which are acted upon by the brake cylinders 2, 3. The shoes act on a rotating brake disc 1 2 which is disposed on the vehicle wheel. The brake shoes 6, 7 are displaceably guided in the axial direction in a radially open shaft of the brake saddle 1 and are held in the radial direction by two holding bolts 1 3, 14 disposed offset in the peripheral direction.
The support plates 8, 9 each have two longitudinal holes 17, 18 for the holding bolts 13, 14.
A retaining spring 19 presses the brake shoes 6, 7 downwardly and the shoes are stopped by the brake disc 12 after release of the brake. The retaining spring 19 has the shape of a cross with longitudinal elements 20,21 and transverse elements 22, 23, the spring ends 24, 25 of the longitudinal elements 20, 21 being curved.
The retaining spring 1.9 has its transverse elements 22, 23 supported on the upper side of the support plates 8, 9 of the brake shoes 6, 7, the spring ends 24, 25 projecting into recesses 1 5, 1 6 in the brake saddle 1. The spring ends 24, 25 of the retaining spring 19 are locked in the axial direction as a result of the recesses 1 5, 16 in the brake saddle 1. As the retaining spring 1 9 has its longitudinal elements 20, 21 supported in grooves 26 of the holding bolts 1 3, 14, the holding bolts are simultaneously axially secured. Additional securing of the holding bolts 13, 14 by split pins, spring rings, springs or other safety devices is therefore not required.Assembly and dismantling of the brake shoes 6, 7 is substantially simpler and material costs are lower.
In Figure 5 the longitudinal elements 20, 21 of the retaining spring 19 engage in grooves 26 of the holding bolts 13, 14 and one or both ends of its transverse elements 22, 23 contact the inner surfaces 27, 28 of the brake saddle. In this embodiment, the holding bolts 13, 14 are secured against axial displacement by the ends of the transverse elements 22, 23, which ends rest on the inner surfaces 27, 28 of the brake saddle 1.
Securing by the spring ends 24, 25 of the longitudinal elements 20, 21 in recesses 1 5, 16 of the brake saddle 1 is not required. Additional securing of the holding bolts 13, 14, in case of a possible fracture of the retaining spring 19, may be provided by a cover cap 29 for the brake saddle 1. This cover cap 29 comprises a projection 30 which extends into the area of the front faces of the holding bolts 13, 14. The recesses 15, 16 in the brake saddle 1 may be embodied as grooves.
It is also possible to construct the recesses 1 5, 1 6 in such a way that they are open on one side, the contact surfaces 31, 32 for the spring ends 24, 25 and for the holding bolts 1 3, 14 lying diametrically opposite one another in the brake saddle 1.

Claims (6)

1. A brake shoe guide and holding device for a -.dise brake, in which the brake shoes comprising a brake lining and a support plate therefor are displaceably guided in the axial direction in a radially open shaft of the brake saddle, are supported in the peripheral direction of the brake disc and are held in the radial direction by two holding bolts disposed offset in the peripheral direction, which bolts pass through parallel longitudinal holes in the support plates extending tangentially to the arc of the brake saddle and are secured against axial displacement in the brake saddle by safety devices, in which a retaining spring formed as a cross spring has its longitudinal elements supported via the two holding bolts and its transverse elements supported on the upper side of the support plates of the brake shoes, characterised in that the longitudinal elements of the retaining spring engage in grooves in the holding bolts and the transverse elements of the spring locate in the brake saddle.
2. A brake shoe guide and holding device as claimed in claim 1, characterised in that the spring has spring ends projecting into recesses in the brake saddle.
3. A brake shoe guide and holding device as claimed in claim 1, characterised in that the retaining spring engages with its longitudinal elements in grooves in the holding bolts and contacts inn'er surfaces of the brake saddle with one or both ends of its transverse elements.
4. A brake shoe guide and holding device as claimed in claim 1 or claim 2 or claim 3, characterised in that a cover cap is provided for the brake saddle, which cap has a projection which extends into the area of the front faces of the holding bolts.
5. A brake shoe guide and holding device as claimed in claim 1 or claim 2 or claim 3 or claim 4, characterised in that the said recesses are formed to be open on one side, with contact surfaces for the spring ends and contact surfaces for the holding bolts diametrally opposed.
6. A brake guide and holding device for a disc brake substantially as hereinbefore described with reference to the accompanying drawings.
GB08234129A 1981-12-17 1982-11-30 Brake shoe guide and holding device for disc brakes Expired GB2111616B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD23587781A DD206711A3 (en) 1981-12-17 1981-12-17 BRAKE BAG GUIDE AND HOLDING DEVICE FOR DISC BRAKES

Publications (2)

Publication Number Publication Date
GB2111616A true GB2111616A (en) 1983-07-06
GB2111616B GB2111616B (en) 1985-08-14

Family

ID=5535513

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08234129A Expired GB2111616B (en) 1981-12-17 1982-11-30 Brake shoe guide and holding device for disc brakes

Country Status (5)

Country Link
CS (1) CS241996B1 (en)
DD (1) DD206711A3 (en)
DE (1) DE3234347A1 (en)
FR (1) FR2518681B1 (en)
GB (1) GB2111616B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159220A (en) * 1984-05-25 1985-11-27 Teves Gmbh Alfred Speading spring for a floating-caliper or fist-type caliper spot-type disc brake
US4940120A (en) * 1987-03-21 1990-07-10 Alfred Teves Gmbh Disc brake, especially for use with automotive vehicles
ITMI20091478A1 (en) * 2009-08-13 2011-02-14 Freni Brembo Spa SPRING FOR CALIPER BRAKE DISC AND BRAKE CALIPER EQUIPPED WITH SUCH SPRING
ITMI20122156A1 (en) * 2012-12-17 2014-06-18 Freni Brembo Spa DISC SPRING FOR BRAKE CALIPER AND BRAKE CALIPER SET WITH DISC
ITMI20122155A1 (en) * 2012-12-17 2014-06-18 Freni Brembo Spa DISC SPRING FOR BRAKE CALIPER AND BRAKE CALIPER SET WITH DISC

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4324989A1 (en) * 1993-07-26 1995-02-02 Teves Gmbh Alfred Hold-down spring for disc brakes

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7413443U (en) * 1974-07-11 Kugelfischer Schaefer G & Co Retaining pin for brake lining carrier
DE1182087B (en) * 1962-12-05 1964-11-19 Teves Kg Alfred Partly lined disc brakes, especially for motor vehicles
GB1364861A (en) * 1971-05-11 1974-08-29 Girling Ltd Disc brakes
US3783980A (en) * 1971-10-13 1974-01-08 Itt Brake lining holding arrangement for spot-type disc brakes
DE2252156C3 (en) * 1972-10-25 1982-03-04 D.B.A. Bendix Lockheed Air Equipement S.A., 92115 Clichy, Hauts-de-Seine Hold-down and return spring made of spring wire for the brake shoes of a fixed-caliper part-lined disc brake
FR2404767A1 (en) * 1977-09-29 1979-04-27 Dba DISC BRAKE AND NOISE SPRING FOR SUCH A BRAKE
JPS5565733A (en) * 1978-03-23 1980-05-17 Akebono Brake Ind Co Ltd Disk brake
DE2847655A1 (en) * 1978-11-02 1980-06-04 Teves Gmbh Alfred GUIDE DEVICE FOR THE BRAKE PAD DISK BRAKE PAD

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159220A (en) * 1984-05-25 1985-11-27 Teves Gmbh Alfred Speading spring for a floating-caliper or fist-type caliper spot-type disc brake
US4658938A (en) * 1984-05-25 1987-04-21 Alfred Teves Gmbh Spreading spring for a floating-caliper or fist-type caliper spot-type disc brake for automotive vehicles
US4940120A (en) * 1987-03-21 1990-07-10 Alfred Teves Gmbh Disc brake, especially for use with automotive vehicles
ITMI20091478A1 (en) * 2009-08-13 2011-02-14 Freni Brembo Spa SPRING FOR CALIPER BRAKE DISC AND BRAKE CALIPER EQUIPPED WITH SUCH SPRING
WO2011018815A1 (en) * 2009-08-13 2011-02-17 Freni Brembo S.P.A. Spring for brake caliper of disc brake and brake caliper provided with such spring
ITMI20122156A1 (en) * 2012-12-17 2014-06-18 Freni Brembo Spa DISC SPRING FOR BRAKE CALIPER AND BRAKE CALIPER SET WITH DISC
ITMI20122155A1 (en) * 2012-12-17 2014-06-18 Freni Brembo Spa DISC SPRING FOR BRAKE CALIPER AND BRAKE CALIPER SET WITH DISC

Also Published As

Publication number Publication date
CS708982A1 (en) 1985-04-16
GB2111616B (en) 1985-08-14
CS241996B1 (en) 1986-04-17
FR2518681B1 (en) 1987-01-30
FR2518681A1 (en) 1983-06-24
DE3234347A1 (en) 1983-06-30
DD206711A3 (en) 1984-02-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee