DE7206070U - Disc brake - Google Patents

Description

t "relates to disc brakes for vehicles

which brake linings on one side of a disc that are attached to it are smeared by means of pressure medium pressure, which acts in a Tiotorzyl3nder for brake actuation, to move a piston in the / 7 / lin- ^ er zv . Also at BEWE <™ unp · the piston in. "Ylir-frock are provided, n ^ the brakes by a U on the piston via a pressure ^ song adjustable County ~ s acting to apply mechanical pressure exerted D ^ be.": Is the Lämre of Druckrliedes automatically adjustable, and the Druckrlied consists of two components, namely a Sc aft ^v nit screw and a nut mounted on the shaft or sleeve with internal thread --ewinde ", and serves as Auflp. ^ he for the piston, when this sen to L ^ ^ ev braking is retracted so that the retracted position of the piston provides antonatisch rd wi, ^υ τ ι wear of the brake pads bleach. One of these components of the Druckrliedes was Bislan ~ constantly rrepen twisting ^ ehalten, vjobei the other component is rotatable, but frictional re? e ^ torsion is held when an axial load is applied

Postal checking account Essen 47247 · Commerzbank AG Düsseldorf, Deposit kasse Hauptbahnhof

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5. Disc brake according to one of the claims 1 to '+, characterized in that the motor cylinder (25) is built into a movable member (18) for Brer.sbet, drs is vorrecehen to the brake lining (23 ·, 2 ^{/ L} ) so pnsuorder, cn3 the piston (26) of the motor cylinder (25) ^{acts directly on a brake lining (23 1} ) and the reverse force on the cylinder (25) is transmitted to the other brake lining (2A-); ird, v / obei the bev / et-Liche member (18) is attached in a fixed support bracket (10) ■ -conductive.

6. Disc brake according to claims A and 5, characterized in that that on the fixed angle (10 ^ a support for the dumbbell (A-Oa) of the Bowden cable (A-O ") is provided.

7 · Disc brake according to one of the preceding claims, characterized characterized in that the motor cylinder (25) for the brake actuation: is provided with two separate trees in which pressure medium pressure can act to move the piston (26) in the cylinder (25) and to apply the brake pads (23, 2A-) to the disc (11).

"Druckelier" is exerted so that mechanical pressure via the pressure member on the piston can be susfcütt without relative movement of the component; if at · he '? as Dru okulier! ^vnn - " Axial load is freed, the rotatable 3euteil can be rotated for the automatic extension of the pressure member.

Means such as a lever, wedge or cam have been provided to axially aux the mechanical pressure to practice the pressure lilac.

The invention is based on the object of an improved arrangement to exert mechanical pressure on the piston to create in a disc brake c ^ r mentioned type.

β Έτϊ indunsrspeinäß is in a disc brake of the type mentioned

■ a part of the DruckPlieües rotatably arranged and against axial

Maintain movement while the other part can also be rotated, but rubbing «brisk rotation is held when an axial load is exerted on the pressure member. Precautions have been taken to ensure that said part is via a mechanical linkage to turn. This causes a relative rotational movement of the parts and an extension of the pressure member to the Move the piston in the motor cylinder and attach the brake pads to apply the brake disc.

Two exemplary embodiments of a disc brake according to the invention are described in detail below with reference to the accompanying drawings:

Figure i is a plan view of the brake. FIG. 2 is a section on line 2.2 of FIG. 1.

3 is a view in the direction of arrow 3 seen in fig.

Figure 4 is a view in the direction of the arrow '! seen in Fig. 1, and

Fip: 5 is a section similar to FIG. 2 and shows a modified arrangement.

In the figures, the brake has an angle 10 which, as shown, can be a metal casting, as is described in the applicant's pending British applications 55611/70 and Ύ] 921/71. The casting can be attached to a fixed part of a vehicle, for example an axle housing or a wheel suspension, and the bracket 10 is attached to one side of a brake disc (shown in phantom at 11 in FIGS. 1, 2 and 3), ^ iie of a wheel hub, not shown, is carried, which is arranged rotatably in or on the axle housing or the wheel suspension, and has two spaced-apart members 12 which extend over the circumference of the brake disk 11. Two further members 13, which run away from the plane of the brake disk, are formed with flat surfaces 14 in a common plane tangential to the brake disk 11, and two further flat surfaces 15 in a plane-parallel plane tangential to the plane of the surfaces 14, but further Distance from the axis of the disc 11 are formed on the links 12. The members 12 and 13 are also formed on their inwardly facing sides with flat surfaces 16 and 17, respectively, and a movable member 18 which is provided with flat surfaces for engagement with all of the flat surfaces on the bracket 10 is arranged so as to that it slides on the bracket 10 in a direction parallel to the axis of the brake disc 11. The movable member 18 is

ra.it the surfaces 14 and 15 on the bracket held in contact by retaining members 19 which are attached to the bracket with bolts 21 ", with curved leaf springs 22, which when tightened
the bolt 21 is pressed flat, vorg ^ s ^ h ^ n sird. about one
resilient Sr> annla.st exert on the holding members 19.

The movable member 18 is, as in I ¹ if. 1 is shown, in a loop, around a portion of the brake disc 11 and zv / ei brake linings 23 and in its loop. 2A- on .ieder side of the disk aOf to take.

A cylinder designed as part of the movable member 18

25 is arranged with my axis parallel to the axis of the brake disc when the brake is assembled, and be open
End points into the loop of the movable link, as in Pir. 2 is shown. The cylinder 25 is located on the side of the
Brake disk ii, is fixed at the angle 10, and a cup-shaped piston that slides in the cylinder 25

26 has its p-closed end at the open end of the cylinder arranged.

The brake pads 23 and 24 are always on I-TetalT slats

27 and 28 are arranged, and the piston 20 is profiled on the support plate 27 of the brake pad 23, and is ~ ercn rough turning about gore
the said support plate by any ^H .i ttel not shown. such as holding a protrusion on one link that engages a recess in the other link. The brake pad 23 is rain UEfansrsbevierunir caused by the resistance
the brake disc is held on the angle by the load of end faces of its support plate 27 on faces 29. The brake pad 24 on the opposite side of the disc 11 is held in a fixed position on the movable member 18 by pins 31 which engage holes in its support plate 28 so that. the

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/ '^ rs is ⁴ ^ ei * ¹ arm ⁷ ^ - rn ^r "" ^ "bra.cht. r, in part ^fl ei =""Om Fla ^ri ? ch" i ~ "pjc'n] riq ^ eneii? ; Ππρ mean piston P / - ^ extending Schatter tb "i · ⁷ <~ nit: Schmibnrev / pass inde, v; obei the S ¹⁰ H ¹ ^ aυ" b- I; "? "■ - \ '<^ v' /, u ~ F \ -; ei. Se aupdrp'hisc ^ er ^ overcut. On '-hr ^ Lib ^ ev / indeababschnitt cep S-like 3? Is a sleeve nnen ^ eViiinde an ^r '' eordret, vjoboi the screw thread on the f. and the sleeve have such a S'jielrauTn, because ": · ογι.πρ · ρ relative axial movement between the shaft ~> 2 and ⁷ :" without relative Rotation can take place.

! "ilfi" ⁷ⁱ 7 v.'eist on your the decided 1-country of the piston .. _-. r. '> \ h - vte' ~ ^T 'inde a Kc-elstvinff 1 vc.he 33 on, din nit ■ - nn - ^ - en Ve -elsi-umnf fläclie ⁷ O puf dem Kolber zunnmmenv / i rkt, '· "T-'rr -.- ^]. Vi.irrilnnr' to form the ej.ne Prehnn ~ d ^ r 'i ^; ' lse ■ / "'.: <■" ■'"• e: .i Kölner: Γ ^ prevents, ver.ii di ^ bolder 'K ^f · t ^rr - ¹ 1 r * tτ 1 ■ ⁿ ό.f "- ■■ '."' And ⁷ · 'ί in; V) T''yourunr ·' -ehai ton v / eroon.

The sleeve 3 ^V is pressed to the closed end of the piston by a spring M, which runs on a Kle./jnring 4Γ, which is attached in the piston 26 at its open end, and on the sleeve 37 via a pressure ball screw 43

He, sine? mechanical means are provided which act on the arm 35 in order to rotate the shaft 32, and these means preferably comprise a Bowden cable 40 (Fir ·. 4) for whose dumbbell A-Oa a support on a with the angle ΊΟ fixed provision is provided ⁱⁿ T 44. A spiral compression spring 40b acting between the arm 35 and the projection 44 presses the arm 35 in a direction releasing the brake.

When pressure medium pressure is supplied to the cylinder 25 to apply the brakes, the piston 26 evaluates itself to the open end of the cylinder, the shaft 3? remains stationary, and the sleeve 37 moves the piston 26 until the clearance in the screw threads is opened. If further movement for applying the brake is required, lä ^Q t of the piston 25, the sleeve 37 behind back, thereby di ^ra kerelstumpfförmipen Kupplunp; sflachen 38 and 39 are separate, but the axial pressure acting on the sleeve spring 41 causes rotation the sleeve on the shaft 32 and a r> ^! achfolKen the piston movement, whereby the combined length of shaft 32 and sleeve 37 is increased. When the fluid pressure in the cylinder is released, the piston bowec-t only as far back as the Sni ^ lrfur ¹ ! Allowed in the screw threads, so that an excessive Snielraum between the brake pads and the brake disc caused by wear of the brake pads is absorbed.

TJm to read the brake mechanically, is the stick ^ 2 by the action of the Bowden cable? on the Αϊήι 35 rotated about its axis, and while the sleeve 37 ^r 'egen Verdrehunp through the Reibkupp ment? action of the frustoconical surfaces 3S and ⁷ ^ is obtained, the shaft 32 rotates in the sleeve 37 and moves the latter axially in order to apply the brake. Although the shaft 32 can be rotated by the arm 35 in order to apply the brakes mechanically, its rotation, due to its coupling with the Bowden cable 40 and the spring 40b holding this cable under the tension mine, opposes sufficient resistance to hold it stationary when the brake is applied is relesrt by pressure medium pressure.

It will be understood that the shaft 32 and the sleeve 37 are a compression member adjustable length between ... n pistons 25 and the cylinder 26 virkt to apply the brake mechanically and an adjustable support for the piston for determination its position in the cylinder when the brakes are not applied.

The brake pads 23 and ° Λ are held in their position in the brake arrangement by a holding member 59 made of spring steel plate (Fig. 1 and 3), which presses them radially inward and is held in its position by a pair of ZaOfen 61 ^ which in holes are sliding in the sliding member Ί8, the pegs 61 also extending through holes in the support slats 27 and 28, as in Fig. 2 p-ezein-t.

Instead of that the one brake pad against the resistance of the disc is held directly on the angle and the other by the movable member, the bearings, which prevent an ⁿ Bev / eminr the two Bremsbeläre by the V / iderstandskr ^ forces can, on the angle, or to your movable member may be provided.

.P> v in Fi ^r ". ¹ ^ de" * "· Fig ?. IdUr - ^ - ¹ Ii r"?, ■ '■': ■> bon aIir ■ · "· * ·; ^c : ndnlt <" · ■ · "! R! Op Or ^ j-Tld ¹ T ^ ^Γ 'Ρ" Ρ! Ϋ M β ΘΉ SC h ^r -it) ^ο P "b Γ" P "^. F- ⁿ Γ"' ¹ T ' ^Γ ' ν " ¹ '"^' Π ^Γ -Γ ¹ and

ro nbrewfind Gl t , dn: "'pj.r a Anlcvf- ^ ri ^ 57" * ^ »''sc" itrrh tteldruck von .ier ^ er from zv / ei ^ uoll pn ^r ' ost ^ tten, so C ³ RR rie Brense with a drought — brakep ^^ Eter: verv-ncst fouröen can, with which at least Pinire the "•• ersen usually vo? Pressure ¹ :! .ttelirnck titled v / erdon from both sources and from the pressure medium pressure from a QiIe ¹ Ie actuated. if the other source fails.

In the modified Anorarjunp- the movable link is ^ i-7 cem in Fip ·. 1 to ^ n: the previous movable member Ί8 is generally similar, but the end of the cylinder 4-6, however through which the shaft 4-7 runs, has a hole larger than the shaft, The opening accommodates a pot 4-8, which is kept free in both directions with axial movement and on which a cylindrical V / pnd 4-9 is formed, which runs into the cylinder 4-6. The cylindrical V / and 5 * 1 of the cup-shaped piston 52 fits between the wall of the cylinder 4-6 and the cylindrical wall 4-9 on the plug 4-3, and an axially fixed inside the piston 52 and within the cylindrical ward 4-9 on the pusher. 48 lying tubular member 53 is a Auflarer 54 for the spiral return spring 55? which presses the sleeve 6 with the internal thread towards the closed 3 end of the piston 52.

The two pressure sources can each be connected to two at 57 or 58 shown pressure medium pressure inlets connected with the inlet 57 to the annulus between the wall of the cylinder 4-6 and the cylindrical V / and 4-9, where the Pressure medium pressure on the end of the cylindrical wall Si des Piston acts while the inlet 58 to that of the cylindrical Wall ^ 9 surrounding space leads where the pressure is on the end wall of the piston ρ acts.

Claims (2)

Protection a πξόγ'ϊ marriage Ί. Disc brake rait; Brake linings that are grounded on opposite sides of a disc by means of pressure medium pressure, which is used in a motor cylinder for brake actuation. ^r irk ^J j, to move a piston in the cylinder, and means to move the piston in the cylinder, to apply the brakes by a mechanically exerted pressure acting on the piston via a pressure member, whereby the length of the pressure Link is automatically adjustable and the pressure s-li ed consists of two components, namely a shaft with screw thread and a riutter or sleeve with internal thread attached to the shaft, and serves as a support for the piston when it is used. ' Releasing the brakes is pulled back. so that the retracted sleeve of the piston is automatically adjusted in order to bleach out wear and tear on the brake linings, characterized in that, that a component (32) of the pressure member is rotatably arranged and is held against axial movement, the other component (37) is also rotatable, but held against rotation by friction is when an axial load is applied to the compression member, and precautions are taken to protect said one component (32) to rotate a mechanical linkage and a relative one Rotary movement of the components (32, 37) and an extension of the Pressure member to cause the piston (26) in the engine cylinder (25) to move the brake pads (23, 24) on the brake disc (H) to be applied. 2. Disc brake according to claim 1, characterized in that one component (32) of the pressure member from a pressure bearing reren axial bev / erun ^ ° b ^ e is supported.