DE2839195A1 - DISC BRAKE DEVICE FOR MOTOR VEHICLES - Google Patents

Description

FATETNTANWÄLTE A. GRUNECKER

DiPL-ING ₁

H. KINKELDEY

g * DFl-IfJG.

8 3 9 1 SS ^w STOCKMAlR

£ U v / v I JJ

DRINQ-AeEjCAtTCCH) DR-INQ-AeEjCAtTCCH)

K. SCHUMANN

P. H. JAKOB

DIPL-ING

G. BEZOLD

DR BSINAX-OIPL-CHEM.

8 MUNICH

MAXIMILIANSTRASSE

8th September 1978 P 13056

SUMITOMO ELECTRIC INDUSTRIES, LTD .. 15, Kitahama-5-cliome, Hlgashi-ku
Osaka / Japan

Disc brake device for automobiles

The present invention relates to a disc brake device for a motor vehicle and in particular on a swinging disc brake device that is particularly is suitable for use on a motorcycle.

Such a disc brake device has already been used known, which has a yoke-like brake housing which is arranged over and across a brake disc which is attached to an axle, which is hereby rotatable, the housing having two yoke-like depending on both ends Has arms, with a pair of Bremsklotzeinrich-

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TELEPHONE (OBS) 2Q28 62 TELEX OS-SS 38Ο TELEGRAMS MONAPAT TELEKOPIHRER

6th
- / - 2839135

lines on both sides of the brake disc are arranged opposite one another in such a way that they are between one another as a result of a braking action, sandwiching the brake disc, and wherein a brake operating device in one of the yoke-like. Arms are provided and adapted to one of the brake pad assemblies, which is arranged adjacent to this, to actuate in order to cause the adjacent Bremsklotzanordming, against to press a lateral circumferential surface of the brake disc, while the other brake pad assembly subsequently is caused to press against the other lateral surface of the brake disc under the action of the counterforce, generated by the brake disc as a result of contact with the one brake pad assembly and on the other brake pad assembly transferred through the üoch is, and the brake device also has a mounting structure for attaching the yoke or brake housing on a stationary part of a motor vehicle.

However, the previously known disc brake device of the type described above suffers from many disadvantages. First, a mounting structure is a complicated and expensive arrangement for attaching the yoke or brake housing required on the stationary part of the vehicle. For example, it is a. special assembly section on a stationary section of the motor vehicle, such as on the two-part fork of a two-wheeled motor vehicle formed, and the brake device is on the mounting portion by a fastening device such as bolts and nuts or such fittings. Thus, a relatively complicated and Arbeitsre procedure for installing and removing the disc brake device in the motor vehicle is required. as The second is the visual check or inspection of the degree of wear of the brake lining or the brake pad arrangement as well as removing the worn brake pad assembly for repair or replacement is difficult and

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laborious to perform.

It is therefore an object of the invention to provide a disc brake device provide that the disadvantages of previously known disc brake devices. as they are above ~ were written, clears away.

Another object of the invention is to provide _for an oscillating disc brake device, which can easily enter a motor vehicle on a staionären part and can be expanded "

Still another object of the invention is to provide an improved structure of a yoke type disc brake device to be provided, including the inspection of the degree of wear of the brake pad assemblies as well as the execution of their Renewal can be done in a much easier way.

In view of the above and other objectives, which will become more apparent as the description proceeds are, according to one aspect of the invention, a disc brake device is provided which having a yoke-like brake housing, which is arranged transversely to a brake disc, which on an axis of a Motor vehicle is attached to an associate Wheel to be rotatable, a pair of brake pad assemblies located opposite each other on either side of the brake disc arranged and supported by the brake housing, an actuator to one of the brake pad assemblies to cause pressing against one side surface of the brake disc while the other brake pad assembly is caused against the other side surface of the brake disc by the action of To apply counterforce generated by the frictional contact of a brake pad assembly with the brake disc will, and a pair of guide pins on either side

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of the yoke-like brake housing are arranged and extend parallel to each other in the same direction, in which the pad assemblies are actuated to engage the pad assemblies on either side thereof slidably supported, the guide pins are removably attached to the yoke-like brake housing and one of the guide pins for attaching the disc brake device serves on a stationary part of the motor vehicle.

In a preferred embodiment, each is the Brake pad assemblies formed with a semicircular notch on at least one of their sides, which in slidably engaged with the other of the guide pins so that the brake pad assemblies are effortless can be moved for inspection.

According to another preferred embodiment of the invention, the yoke has a depending arm portion on, in which the actuating device is arranged, and on which the guide pin, which is used to attach the Braking device is used on the stationary part of the motor vehicle is attached. To the swinging movement of the braking device to prevent the assembly guide pin, are stop surfaces with a complementary design both on the facing yoke arm section and on the stationary one Section trained.

A particular aspect of the invention resides in a disc brake device for motor vehicles, comprising a yoke-like brake housing which is located so that it straddles a brake disc which is mounted on an axle of the motor vehicle, which is rotatable with a wheel, a pair of pad assemblies, the are opposite to each other on both sides of the brake disc and can be moved towards and away from the brake disc in accordance with the guidance by a guide device,

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and a hydraulic actuator disposed in an arm portion of the yoke-like housing and is adapted to cause one of the brake pad assemblies, which is disposed adjacent, against a to press the lateral surface of the brake disc as a result of the braking action, while the other brake pad assembly is caused, consequently against the other Side of the brake disc to be pressed under the action of the opposing force generated by the brake disc as a result of the engagement is generated with the first firing block assembly. The guide means includes a pair of removable guide pins on either side of the yoke-like brake housing are arranged and extend parallel to each other to this displaceable the brake pad assemblies to support. One of the guide pins is used to mount the braking device on a stationary Used section of a motor vehicle. The brake block arrangements are slidably inserted on the guide pins by means of semicircular notches, which are inserted into the Brake pad assemblies are formed.

The above and other objects, features, and benefits of the invention will become even more apparent from the description of exemplary embodiments of the invention, which was made in connection with the accompanying drawings, where

Fig. 1 is a side view and an exemplary one Shows an embodiment of a disc brake device according to the invention for a motor vehicle,

Fig. 2 is a front view thereof,

Fig. 3 is a sectional view taken along line IH-III in Fig. 2;

Fig. 4 shows the disc brake in a perspective view, with portions broken off are,

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Fig. 5 shows a modification of the invention
Disc brake device in plan view
shows, with sections broken away,

Fig. 6 is a partial front view of another

Embodiment of the invention Disc brake view is.

Reference is now made to the drawing; is the illustrated, inventive disc brake device
embodied as a pendulum disc brake device known in the art and incorporating as essential components a brake housing or yoke 10, a pair of brake pad assemblies 20 and 20 'placed opposite one another on either side of a brake disc (not shown)
each includes an actuator 30 for actuating one of the brake pad assemblies (assembly 20 in the case of the
illustrated embodiment) to press against a lateral surface of the brake disc, which is on a
Axle is attached, which together with a wheel of a
Motor vehicle such as a motorcycle or motorcycle is rotatable. The pressing or actuating device 30 can be any conventional? !! Have structure. For example, it can be formed from a hydraulic cylinder which slidably receives in its interior a piston 30 ″ which has an outwardly projecting end section which is designed to counteract
to press a support plate 21 of the brake pad assembly 20. When the hydraulic cylinder is supplied with brake pressure medium by actuation of a brake pedal, the brake pad assembly 20 is first caused to
to press against the brake disc under the pressure of the piston 30 ', and then the other brake pad assembly 21' is in frictional contact with the associated
lateral surface of the brake disc under the action of

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Brought counterforce exerted by the brake disc on the now engaged brake pad assembly 20 and is transmitted to the oppositely arranged brake pad arrangement 20 ′ via a yoke arm 11.

A pair of guide rods or pins 12 and 13 are provided on either side of the yoke 10 and extend parallel to one another in the direction in which the piston 30 'of the hydraulic cylinder 30 is displaced. With a view to making it easier to attach and remove the guide pins 10 and 13 and thus the brake pad arrangements 21 and ^21l , these guide pins 12 and 13 are slidably inserted into through-holes which are formed in lateral projections 25 of the yoke 10 (see FIGS 3} and they are held in place by conventional means such as retaining pins 26 (see also Fig. 4).

As shown in Figures 3 and 4, each of the brake pad assemblies is from a brake lining 21a (21'a) and the support plate 21 (or 21 ') composed. The brake pad is set up to be in-frictional engagement with the brake disc to step and in doing so bring their rotation to a standstill, while the support plate to support the associated brake lining in a predetermined position relative to the brake housing or the yoke and thus to the Brake disc is used. In this context, there is the brake lining 21a or 21'a of wear or abrasion exposed and repaired or renewed, it is desirable that the brake pad assembly 20 and 20 'such it is appropriate that the inspection of the brake lining and the expansion of the brake pad assembly is simplified Way can be ensured. To this end, each support plate 21 or 21 'is the brake pad assembly and 20 'with a pair of semicircular notches 22 and 23-

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(or 22 'and 23') formed on the opposite side edges of the support plate at the top portion, as best seen in FIG. The dimensions of such semicircular notches 22 and 23 are chosen such that the associated guide pins 12 and 13 can be slidably received in them without being able to be released from their engagement therewith. With such an arrangement, the brake pad arrangement can be easily disassembled for repair or renewal only by removing one of the guide pins from the guide pins 12 and 13. Preferably, one of the paired notches (23 and 23 'in the case of the illustrated embodiment) can be designed as a circular hole. In such a case, the state of wear or abrasion of the brake lining can be easily checked simply by pulling out the guide pin 12. In addition, all such semicircular notches 22, 23, 22 'and 23' can be replaced by circular recesses. The brake assembly described above is adapted to be attached to a support or mounting block 40. which in turn is firmly attached to a suitable stationary section of a motor vehicle or, alternatively, is also formed in one piece with it. More precisely, the assembly or support block or the assembly or support part

40 is formed with a circular projection 41 having a through hole 46 through which the Guide pin 13 extends appropriately. The support block 40 has flat stop surfaces 42 and 43. on the other hand is a yoke arm portion 10a of the yoke 10 in which the hydraulic cylinder 30 is provided on the side of the guide pin 13 with a hollow recess 16 as well flat stop surfaces 14 and 15 formed, the profile of which is complementary to that of the circular projection

41 and the abutting flat surfaces 42 and 42 formed in the support member 40. So if the

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Brake assembly is attached to the support member 40, wherein the guide pin 13 extends through the associated holes, which are formed in the yoke 10 as well as in the through hole 46 in the projection 41 of the support part 40 is formed while the pad assemblies 20 and 20 'are suspended thereon, then the protrusion 41 received in the corresponding circular hollowed-out recess 16, while the flat adjacent Surfaces 42 and 43 of the support member 40 in surface contact with the corresponding flat surfaces 14 and of the yoke arm 10a, the brake assembly being immovably supported by the support member or block 40 can. In other words, due to the geometric engagement, the inclination of the braking device is around the guide pin 13 to pivot, effectively prevented. Furthermore, with such a support arrangement, the braking torque on the Vehicle body by the support block 40 satisfactorily be transmitted.

In order to compensate for any dimensioning tolerances, it is preferred to have a resilient layer .44 on the supporting Surfaces 42 and 43 to be provided (Fig. 2). In addition, the guide pin 13 can be inserted into the through hole 46, the is formed in the projection 41, are used if a sleeve 45 made of resilient material between them Parts is used (Fig. 3).

FIG. 5 shows a modification in which the support block 40 is formed with a lateral extension 46 which is substantially aligned with the projection 41. The extension 46 has an abutting flat end surface 47 which is adapted to bear against a corresponding one to lie flat section 17, which is formed in the outer wall of the yoke-like brake housing 10 is. Such a support arrangement ensures an even more rigid support for the fire structure.

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Fig. 6 shows another embodiment of the invention Braking device in which the ears or projections 25 for receiving the guide pins 13 with a larger lateral Extension are carried out so that the guide pin 13 can be received in the support block 40 itself, without it being necessary to form the projection 41. In this embodiment, the abutting end surface of the support part 40 carried out in a single plane be, the formation of the hollow recess 16 in the yoke arm 10a is superfluous, while the more rigid Support structure can be ensured in a greatly simplified arrangement.

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Claims (9)

^Ο ΑΤ - Ξ NT ANWALTS 283S195 A. GRUNECKER dipl-ing. H. KINKELDEY DR-INa W. STOCKMAIR DR-ING. AeE (CALTECH) K. SCHUMANN DR BER NAT. - DIPL-PHYSL P. H. JAKOB DtPU-INa G. BEZOLD OR. RER NO.T- OFU-CHEM Expectations 8 MUNICH MAXIMILIANSTRASSE September 8, 1978 p 13056 1 ,) Disk brake device for motor vehicles, characterized by the following features: a brake disk ₇ which is attached to an axle of the motor vehicle and is rotatable with an associated wheel, a yoke-like brake housing (10) which is arranged so that it straddles the brake disc, said housing having a first and ... second depending arm portion (10a, _M)} - a pair of pad assemblies (20, 20 '), the are arranged on both sides of the brake disc opposite to each other to and away from the brake disc under the guidance of a guide device (12, 13) which extends between the first and the second arm, and an actuating device (30, 30 ') / in the first Arm is arranged and is set up, the one of the brake pad assemblies arranged adjacent to it is to be caused to press against a lateral surface of the brake disc as a result of a braking action ..., the other brake pad 90981 1 / 101S- TELEPHONE (O3B)! 23 28 63 TELEX Ο3-2β38Ο MONTH TELEXOPIER ORIGINAL INSPECTED 2833135 arrangement is set up to subsequently press against the other side of the brake disc under the action of the counterforce generated by the brake disc as a result of the engagement with the first brake pad arrangement,
and further characterized by - That the guide device has a pair of removably attached guide rods (12, 13) which are attached to both sides of the yoke-like brake housing are arranged and are parallel to each other in the direction extend in which the actuating device is actuated to move the one brake pad assembly, to displaceably support the two brake pad assemblies, and - that one of the guide rods is also used to attach the disc brake device to the support part (40), which is attached to a stationary section of the motor vehicle or a part of the stationary section is". 2. Disc brake device according to claim 1, characterized characterized in that the support member (40) is formed with a through hole (46) through which the first guide rod extends (13) extends, and an abutting end portion (41, 42, 43; 47), which is set up to with a facing portion (16, 14, 15; 17) of the yoke-like Brake housing (10) on the first arm section (10a) in the mounted state of the disc brake device in engagement to step in order to prevent the yoke-like brake housing from pivoting around the first guide rod. 3. ... Disc brake device according to claim 2, characterized characterized in that the geometric design of the adjacent end portion (41, 42, 43; 47) of the stationary Section (40) complementary to that of the facing section (16, 14, 15; 17) of the yoke-like brake housing (10) is formed. 909811/1015 ORIGINAL INSPECTED 4 * disc brake device according to claim 3, characterized characterized in that the abutting end portion is a flat surface (42, 43; 47). 5. Disc brake device according to claim 3, characterized characterized in that the adjacent end portion has a curved profile (41). 6. Disc brake device according to one of claims 2 to 6 _t, characterized in - that the abutting end portion of the support part (40) is formed with a lateral extension (46) which extends essentially in the direction in which the actuating device (30, 30 ') is actuated, and which is set up to press against a second section (17) of the yoke-like brake housing (10) in the attached state of the disc brake device _: 7 .. Disc brake device according to one of claims 1 to 6 _P, characterized in that the two guide rods (12, 13) are slidably inserted into holes which are formed in the yoke-like brake housing (10), and by removable holding devices (26) in place and Are held in place, and that each of the brake pad assemblies (20, 20 ') is formed with notches (22 "23 ₃ 22", 23') on its two side portions; are aligned on each side of the yoke-like brake housing. 8. Disc brake device according to claim 7, characterized in that at least the notches (22, 22 ^l ) which receive the second guide rod (12) are semicircular. 9. Disc brake device according to one of the claims 1 to 8, characterized in that the support part (40) 9 0 9 8 1 1/1 01 B. Is part of a stationary section of a vehicle. 909811/10