Disk braking mechanism with self-boosting, and brake pad

FIELD: machine building.

SUBSTANCE: disk braking mechanism with self-boosting includes a clamp of disk braking mechanism, which is retained on a stationary support of disk braking mechanism, with brake pads, a self-boosting device and a brake plunger having the possibility of being brought into action by means of a brake lever, with a clamping device and with an adjustment device to adjust wear rate of brake pad and/or brake disk. Self-boosting device has a pressure plunger that adjoins the brake pad through an expanding support on end surface on the clamp side and that is located with its end zone facing the brake pad in a guide plate movably retained in the braking mechanism support. Expanding support in non-operating position of the self-boosting device is enclosed with sealing structure. Brake pad includes a cavity having a ramp outline, and pressure disk of the brake pad or another disk include a collar on the side facing from the friction pad, with a receiving element having the possibility of retaining pressure plunger.

EFFECT: improving operating reliability and increasing service life.

24 cl, 1 dwg

 

The technical field to which the invention relates.

The invention relates to a disk brake mechanism samozrejme in accordance with the restrictive part of paragraph 1 of the claims, as well as to the corresponding brake pad.

The level of technology

Disc brakes with samozrejme known, for example, from DE 102006036278 B3, require acting during braking the brake pad axial effort to maintain the clamping force, which is supplied from the Electromechanical drive mechanism or pneumatically controlled brake cylinder through the clamping device. Because of this, the drive mechanism can have substantially smaller dimensions.

Such samoushirenie is achieved with a device of the self, which is an integral part of the clamping device.

In a guide plate fixed movable in axial direction relative to the brake disk pressure plungers, which in combination with the brake pad of the clamp, usually with a bearing disc brake pads, on which is located a friction pad, or with pressure disc brake pads as an integral part of the brake linings, form, respectively, rethimnou support what each push the plunger with forcevision has ball bearings, which is located inside the recess, is provided in the periphery; brake disc from the inside out ramps with a rise.

When braking, i.e. when the brake pad with the help of the clamping device is pressed against the brake disc, brake plate under the action of friction forces in the process of clamping the brake disc is moved in the direction of its rotation, and simultaneously the corresponding ramp is moved along the ball bearing, with gain acting on the brake disk axially-oriented braking effort.

When you leave the brake mechanism of the brake pad by means of a return spring moves to its original position, in which Razina support is practically non-existent.

During operation are identified, however, some problems, as Razina bearing, not being covered, runs in the danger further atmospheric and meteorological influences. Such, so-called "high functioning" Rethimno support leads to severe pollution and corrosion phenomena that may result in complete failure of the device of the self or, at least, limiting its performance.

Disclosure of inventions

The basis of the invention lies task is to improve the disc brake mechanism samozrejme and, accordingly, tormoznoy the pad in accordance with the original version so to its reliability was a long way superior, and its service life is increased.

This problem is solved by a disk brake mechanism with signs of paragraph 1 of the claims and, accordingly, by means of the brake pads with signs of paragraph 17 of the claims.

By sealing Rethimno support in the off position of the brake mechanism, i.e. when, for example, the ball bearing is at the bottom end; the position in the recess of the pressure disc brake pads, Razina bearing is protected from atmospheric and meteorological influences so that no humidity and no dirt can't get into it.

While facing each other, the surface of the pressure plunger and the adjusting disk brake pads can seal to adjoin to each other in the common area of overlap, and by means of a return spring, by means of which the brake pad displays their position braking pressure disc brake pads and, respectively, the brake pad is pressed against pressure plunger. In this case, the end surface of the pressure plunger and the contact surface; the pressure disc brake pads form a sealing structure.

For alignment tolerances in the preferred embodiment, on the compression PL is neere may be provided by a sealing ring, which in the initial position, the device of the self with the seal adjacent to the pressure disc brake; pads and, respectively, to the brake pad.

To meet mechanical and, in particular, thermal requirements, such a sealing ring is made from heat resistant, however, plastificated: material. Moreover, the sealing ring may be made of copper or heat-resistant polymer.

For further protection from corrosion, in accordance with the idea of the invention, the body; rolling Rethimno support, that is usually the bearing balls, are made of stainless and wear-resistant material. Also suitable are, for example, be hardened alloyed with chromium and Nickel steel, hard alloys or ceramics.

Liners for rolling bearings, in which are placed the rolling body can be made of stainless or galvanized steel sheet.

Paragraph 17 of the claims shows a brake pad for a disc brake, in particular a brake pad for a disc brake mechanism samozrejme, with pressure disc brake pads, on which is located a friction plate, and which has one or two of the following symptom

a) and b): a) on the compression disk brake pads or made with the possibility set and on the compression disk brake linings another disk, on facing away from the friction side is made of at least one recess having a contour ramp, (b) pressure disc brake pads, or other drive have turned from the friction side of the shoulder, with the receiver element, which can resist the pressure plunger.

Thus, directly into the brake pad integrated with other functional elements, namely, on the one hand, at least one loop ramp for rolling elements and, alternatively or in a particularly preferred embodiment, in addition to the retainer, at least one of the pressure plunger. In the preferred embodiment, this shoulder is understood shoulder to the middle of the three-loaded plungers.

In accordance with a preferred improvement of the brake pads in accordance with the invention ramp Rethimno supports are placed in a separate box, which is connected with pressure disc brake pads and, respectively, with bearing disc brake pads, for example, by welding.

Instead, the ramp can be made integrally with pressure; disc brake pads, and by means of a suitable additional processing sufficiently prepared in terms of wear resistance and korrozionnostojkoj.

This one-piece variant domestic which can be implemented particularly economical and compact.

This variant embodiment of the invention also gives the assurance that the relevant structural elements Rethimno support when changing the brake pads cannot be reused.

Protection Rethimno support from meteorological conditions, primarily from acting on it during operation of the vehicle splash water, forms the design of the guide plate in the form of baths, and the brake plate and, accordingly, the pressure disc brake pads is partially inside of the bath.

Edge in the form of baths overlaps, thus, brake pad, whereby in combination with the Cup-shaped form of the guide plate in the area of the receiving element of the pressure plunger forms a labyrinth seal that works and braking, i.e. when the brake pad against the pressure of the plunger and, accordingly, the guide plate through rethimnou support is not enabled, and the pressure seal between the piston and pressure disc brake pads through the seal structure is provided more than enough. Water splashes and streams of water, thanks shaped bath design guide plate, can not penetrate directly formed between the guide plate and pressure disc brake pad clearance.

To omnitele or alternatively as protection Rethimno bearing on the respective ball bearings may be assigned a corresponding seal, which is designed in such a way that seals the outside, first, having a ramp recess, and, secondly, the area of support in the compression plunger, that is, the above-mentioned liner for support.

Other preferred embodiments of the invention are indicated in the dependent claims.

Brief description of drawing

An example embodiment of the invention is described hereinafter on the basis of the attached drawing.

The only figure shows a fragment of the disk brake mechanism in accordance with the invention in section in the top view.

The figure 1 shows a disk brake mechanism samozrejme, held on the stationary support plate 8 brake bracket 1 disk brake mechanism with the brake plate 2 from the side of the clip and the trigger, which is configured to clamp to the brake disc. The example shows only the brake pad 2 of the clamp.

To clamp provided with clamping device in the form of a pivoted lever 5 and the brake piston 6, whereby the braking plate 2 can be moved in axial direction relative to the rotary axis of the disc brake.

Further provided by the device of the self, which is expanding support 10, with which an appropriate about the time associated push plungers 4, and which are in contact with the adjusting device due to wear adjustment the brake pads 2.

Push the plungers 4 of its facing the brake pad 2 leaf area are held in the guide plate 9, which is arranged to move the support plate 8 of the brake mechanism in the direction of the clip.

Each Razina bearing 10 is inserted from the front side in the corresponding compression plunger 4 and is positioned there in the liner 13 for sliding support of the ball support 12, which, on the other hand, is inside the hemispherical recess, the side wall of which is made in the form of a rising ramp 11.

During braking, when the brake lever 5 brake pad 2 is pressed to the brake disk, there are tangential traction, under the action of the brake pad 2 is shifted in the direction of rotation of the brake disc, with the change of distance from the brake pads 2 to the pressure of the plunger 4.

When you leave the brake mechanism of the brake pad 2 by means of a return spring 7 is transferred back to the so-called decompressed original position in which the ball 12 supports virtually not functioning, is the deepening of the brake pads 2.

In this position, which is represented in the figure, push the plunger 4 and n is secure disk 3 brake pads 2 are flush with each other, including rethimnou support 10.

For alignment tolerances in the example on the facing pressure disc 3 brake pads the end of the pressure piston 4 is located a sealing ring, which in the preferred embodiment, is made of heat-resistant, plastificated material, and which seal is adjacent to the corresponding surface of the adjusting disk 3 brake pads.

Alternatively or in addition, as in the example on the ball support 12 is located a sealing ring 23, whereby the liner 13 for sliding support and rasina bearing 10 is sealed against the environment.

To accommodate containing ramp 11 of the recess, this recess may be made integrally with pressure disc 3 brake pads, as shown in the example in the left part of the figure. Alternatively, it is also possible to provide the recess in a separate box 16, which is rigidly connected with pressure disc 3 brake pads.

Guide plate 9 in the area of his receiving element for the pressure of the plunger has a convexity oriented opposite to the brake pad 2, while at its facing the brake lining 2 side it is provided with a circular edge 15 in the form of baths, which restricts shaped bath publishedpreviously plate 9, which is partly brake pad 2 or the pressure disc 3 brake pads.

By edges 15 in the form of a bath in an efficient manner is provided by the fact that in the case of pressing the brake pads 2 from the pressure of the plunger 4 is formed in the process of braking between the guide plate 9 and the pressure disk 3 brake lining clearance splashproof.

Brake plunger 6 their respective end zone thus is held fitted in the rear cut-out 19 of the receiving element 18, that is caused by inhibition of the transverse displacement of the brake pads 2 possible deviation, and the bulb 21 through which the brake piston 6 rests on the brake lever 5, functions as a rotary support.

Receiving element 18 is formed in the shoulder 17 of the adjusting disk 3 brake pads, with funnel-shaped hole 22 for inserting, through which may be inserted the brake plunger 6.

For axial locking in a circular groove of the brake plunger 6 is springy ring 20, which when you insert the brake plunger 6 into the receiving element 18 is compressed, and after the introduction expands and adheres to the back of the neck 19.

The reference list of items

1 bracket disc brake

2 brake pad

3 pressure plate tor Osney lining

4 push the plunger

5 brake lever

6 brake plunger

7 recoil

8 brake caliper

9 guide plate

10 Razina bearing

11 ramp

12 ball bearing

13 insert for sliding support

14 o-ring

15 flange-shaped bathtub

16 insert

17 shoulder

18 receiving element

19 back neckline

20 ring

21 ball

22 hole insertion

23 o-ring

1. The disc brake mechanism samozrejme,
a) held on the stationary support plate (8) brake bracket (1) disk brake mechanism with the brake lining (2) of the clamp and the brake lining (2) sides of the trigger, which is configured to clamp to the brake disk,
b) with the device of the self and is arranged to actuate the brake lever (5) brake plunger (6)attached to the pressure disc (3) brake pads, with clamping device and the adjusting device to adjust the wear of the brake pads and/or brake disk, and
c) the device is of the self has at least one push the plunger (4), through which rethimnou bearing (10) from the front side adjacent to the brake pad (2) of the clamp and which is turned to tor is Osney the cover plate (2) end zone is movably held in a support plate (8) of the brake mechanism of the guide plate (9), characterized in that
d) Razina bearing (10) in the off position of the device of the self surrounded by the sealing structure.

2. The disc brake mechanism samozrejme according to claim 1, characterized in that the sealing structure is formed by an airtight seal to the face side of the pressure plunger (4) to the brake pad (2).

3. The disc brake mechanism samozrejme according to claim 1 or 2, characterized in that recourse to the brake pad (2) limit the area of the pressure piston (4) is fixed to the sealing ring (14)adjacent to the brake pad (2).

4. The disc brake mechanism samozrejme according to claim 3, characterized in that the sealing ring (14) made of heat-resistant, plastificated material.

5. The disc brake mechanism samozrejme according to claim 3, characterized in that the sealing ring (14) made of copper or of heat-resistant polymer.

6. The disc brake mechanism samozrejme according to claim 1, wherein forming rethimnou support (10) structural elements made of corrosion-resistant and wear-resistant material.

7. The disc brake mechanism samozrejme according to claim 1, characterized in that Razina bearing (10) is provided with a bead (12) supports, in which the compression plunger (4) is placed in a fixed therein liner (13) for moving op the market and which are made of hardened chrome-Nickel steel made of hard alloy or ceramic.

8. The disc brake mechanism samozrejme according to claim 7, characterized in that provided a recess for placement of the ball (12) bearing in the brake pad (2), the side surface of which is made in the form of a ramp (11) with lift, is located in box (16), which is connected with pressure disk (3) brake pads (2).

9. The disc brake mechanism samozrejme of claim 8, characterized in that the recess receiving the ball (12) bearing, is located in the brake pad of the pressure disk.

10. The disc brake mechanism samozrejme according to claim 1, characterized in that the guide plate (9) on its facing the brake pad (2) the party has the edge (15) in the form of baths, which is in the open operating position of the sliding support (10) overlaps formed between the guide bar (9) and brake pad (2) gap.

11. The disc brake mechanism samozrejme according to claim 1, characterized in that the sealing structure is formed by means located on the ball (12) o-ring supports (23).

12. The disc brake mechanism samozrejme according to claim 1 or 8, characterized in that the pressure plate (3) brake pads has a shoulder (17) from the receiver element (18), inside of which is axially brake plunger (6).

13. The disc brake mechanism with SANOSIL the tion indicated in paragraph 12, characterized in that the receiving element (18) has a rear cutout (19), into engagement with which includes a ring (20) of the brake plunger (6).

14. The disc brake mechanism samozrejme indicated in paragraph 13, characterized in that the ring (20) is designed as a spring ring.

15. The disc brake mechanism samozrejme indicated in paragraph 13, characterized in that the receiving element (18) has a funnel-shaped hole (22) to be inserted.

16. The disc brake mechanism samozrejme according to item 13, wherein the spring ring (20) is located inside the circular groove of the brake piston (6) with the possibility of radial movement.

17. Brake pad for a disc brake, in particular for a disk brake mechanism samozrejme, with pressure disk (3) brake pads, on which the friction plate, characterized in that:
a) on the compression disk (3) brake linings or made with the possibility of installation on the compression disk brake linings another disk, facing away from the friction side is made of at least one recess having a contour of the ramp,
b) pressure plate (3) brake linings or another disk contain facing away from the friction side of the shoulder (17) from the receiver element (18)which has a capability of holding the pressure of the plunger (6).

18. That is mozna overlay on 17, characterized in that the side surfaces of the grooves to form a ramp (11) with the rise.

19. Brake pad for p, characterized in that the ramp form the running surface of the rolling elements.

20. Brake pad for 17 or 18, characterized in that the recess is located in the compression disk (3) brake pads.

21. Brake pad according to 17, characterized in that the recess is located in the insert (16), which is connected with pressure disk (3) brake pads.

22. Brake pad according to 17, characterized in that the brake plunger (6) is arranged to retain the receiving element (18) for axial locking.

23. Brake pad according to 17, characterized in that the receiving element (18) on its inner surface has at least one rear cutout (19).

24. Brake pad for 17 or 23, characterized in that the receiving element (18) has a funnel-shaped hole (22) for insertion.



 

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