Modular brake mechanism

FIELD: mechanical engineering.

SUBSTANCE: modular brake mechanism mounted in the support provided with the port at least in its front side comprises braking lever, front rack that is connected with the braking lever when the brake operates, and at least one stop plate which is mounted on the transverse rack and overlaps the plate for closing the port in the front side of the support. The transverse rack moves by the lever in the plane virtually perpendicular to the plane of the brake disk. The brake mechanism is modular and comprises two or more units. At least one of the units has at least two members. Each of the units can be dismounted through the port in the support.

EFFECT: facilitated dismounting of out-worn units.

6 cl, 7 dwg

 

The present invention relates to a modular brake mechanism for disc brakes.

The brake mechanism is designed for installation in some type of caliper. The brake mechanism corresponding to the present invention is primarily intended for heavy road vehicles, but can also be used for lighter road vehicles or rail vehicles.

At present we know of execution of the brake mechanism in a single unit, for example, see WO 96/12900.

The present invention is to facilitate the replacement of various parts of the brake mechanism, which have different degrees of wear. By separating the brake mechanism on two or more nodes or modules and by separating the parts of the brake mechanism separately for modules, you can adapt the brake mechanism to the requirements of different markets. In some markets, for example, the corrugations may be subjected to higher loads than normal, and must be replaced more often. In other markets the adjusting mechanism, the synchronizing gears and bearings may have more wear than other parts.

In addition, the Assembly of the brake mechanism may be easier for some calipers if you can collect mechanism in the form of two or more nodes.

the Brake mechanism, the corresponding present invention, preferably is driven by a pneumatic method, but it can also operate hydraulically or electrically.

Other objectives and advantages of the invention will be understood by a person skilled in the art when reading the following description.

Embodiments of the invention are described in more detail below on the example and with reference to the drawings, which depict:

figure 1 is a perspective view of the first variant of execution of the unit of the brake mechanism according to the invention,

figure 2 - cross section of the brake mechanism shown in figure 1,

figure 3 is a perspective view of the second variant of execution of the unit of the brake mechanism according to the invention,

4 is a cross-section of the brake mechanism shown in figure 3,

5 is a cross-section of the brake mechanism shown in figure 3 and 4, made according to line V-V in figure 4,

6 is a perspective view of the third variant of execution of the brake mechanism according to the invention, and

Fig.7 is a perspective view of the brake mechanism with an alternative form of the support bracket.

In this description, the terms "front side" when used in relation to the caliper refers to the side facing the brake disc. The expression "rear side" means against the opposite side. This also applies to similar expressions.

The first embodiment of the modular brake mechanism according to the present invention shown in figures 1 and 2. The second embodiment of the modular brake mechanism shown in Fig.3-5. The third embodiment of the modular brake mechanism shown in Fig.6.

The only difference between the first and second options is which parts belong to which module or node. Thus, a large part of the different parts of the brake mechanisms are similar, and these items will be described in the following description only once.

In the variants shown in figure 1-5, the main parts of the brake mechanism, corresponding to the invention are the lever 1, a bracket 2, a cross rail 3, the adjusting screws 4, the bearing plate 5, the shaft 6 to adjust and restore the original position, the closing plate 7, the synchronizing shaft 8, gear 9, the crown gear 10, the return spring 11, the adjusting mechanism 12 and the corrugations 15. The lever 1 is the effect on the transverse rail 3. The lever 1 is supported by roller bearings 20 located in the bearing bracket 2 mounted in a brake caliper (not shown), and the transverse rod 3, respectively. In other embodiments of the invention (not shown), the lever 1 is installed in a support located, directly the public in the caliper, that is, without using any of the support bracket. In some embodiments the invention, the roller support bearings replaced sliding.

The brake force is transmitted from the piston rod of the brake cylinder (not shown), is transmitted to the mechanism, in particular the transverse rod 3, by means of the lever 1. The lever 1 is essentially composed of a shoulder, retreating from what could be called a curvilinear wedge 33 having a cylindrical surface coming into contact with the corresponding cylindrical surfaces of the transverse slats 3 and the support bracket 2. The inner cylindrical surface of a curved wedge 33 interacts with the supporting bracket 2, while the outer cylindrical surface with a larger radius than the inner cylindrical surface, interacts with the cross rail 3. The centers of these two cylindrical surfaces are displaced relative to each other. When the lever 1 is moved down, as shown in figure 2, the curvilinear wedge 33 to be introduced between the support bracket 2 and the transverse rail 3 and push the latter down by braking. Cross rail 3 will move in a plane essentially perpendicular to the plane of the brake disk.

Part of the support bracket 2 works as a cover 32 for the window in the back of the caliper. In some var is the preferable embodiment of the invention the support bracket 2 has no cap, because it is designed for use in the caliper, do not have a window at the rear side (see Fig.7).

Cross rail 3 has two threaded holes, each of which receives the adjusting screw 4. Thus, the adjusting screw 4 is rotatably mounted in a transverse rail 3. Each adjusting screw 4 is provided with a retaining plate 5, which acts on the holder brake pads (not shown) or similar tool. Brake pad will come into contact with the brake disc upon actuation of the brake. As you know, the other brake pad is located on the opposite side of the brake disc. Other brake pad in a known manner is put into contact with the brake disc, as the caliper moves during actuation of the brakes. When the brake mechanism is assembled, the two shaft 6 to adjust and restore the original provisions will be inserted into the adjusting screws 4. The shafts 6 to adjust and restore the original position connected with adjusting screws 4 so that they can move in the axial direction but cannot rotate. In addition, the brake mechanism includes a closing plate 1 attached to the caliper Assembly. The closing plate 7 is attached to the caliper bolts. The closing plate 7 is used on the I close the window in the front of the caliper. Return spring 11 is located between the closing plate 7 and the transverse rail 3 for returning the brake mechanism back to its original position.

The brake mechanism includes a synchronizing shaft 8 having a gear 9 on each end. Gear 9 is connected with the crown gear 10 without the possibility of rotation connected to the shaft 6 to adjust and restore the original position. The synchronizing shaft 8 carries an adjusting mechanism 12 of known construction. Gear 9, the crown gear 10, the synchronizing shaft 8 and the adjusting mechanism 12 form a clock node, synchronizing the movement of the shafts 6 to adjust and restore the original position.

The shafts 6 to adjust and restore the original position provided with the relevant heads for installation tool used to restore the original position of the thrust units when you need to replace the brake pads. A removable cap 35 is normally over the head to protect it.

To protect the brake mechanism from the dirt road between the thrust plate 5 and the closing plate 7 are arranged corrugations 15. In the shown embodiment of the invention the corrugations 15 are heat-rings.

The closing plate 7 has openings for receiving the thrust units. Between the closing square is stiney 7 and persistent nodes there is a gap, enabling persistent nodes to move in any direction relative to the closing plate 7.

In the variant shown in figures 1 and 2, a single module or unit consists of a lever 1, the support bracket 2, which includes the sync node and the shafts 6 to adjust and restore the original position. The lever 1 is held on the supporting bracket 2 clamps 13, corresponding to the tabs of the third variant embodiment of the invention shown in Fig.6. The shafts 6 to adjust and restore the original provisions set out in the holes of the support bracket 2. In embodiments of the invention, generally not having a support bracket, the shaft 6 is inserted directly into the caliper (not shown).

Cross rail 3, the closing plate 7, the return spring 11, the adjusting screws 4, the corrugations 15 and the bearing plate 5 form the second block of the brake mechanism. The second block is held as a whole by the bracket 14. The bracket 14 passes around the lateral rail 3, and the ends of the staples are inserted into the holes of the closing plate 7.

During Assembly of the second module it is important to establish and maintain the parallelism between the resistant hosts. If parallelism is not installed, the brake pads will wear unevenly, which will affect the performance of disc brakes.

For heavy use of the brakes, for example in the dir the IU urban bus the adjusting mechanism 12, the synchronizing gears 9, 10 and the seat 20 are worn more than other parts of the mechanism. Thus, it would be preferable to be able to put the module containing the parts, as shown in the embodiment of the invention figures 1 and 2, as a spare part.

In the variant shown in Fig.3-5, the lever 1, a bracket 2, which includes the clock node, the cross rail 3, the adjusting screws 4 and the shaft 6 to adjust and restore the original position to form the first module or unit of the brake mechanism. This first block is held as a single unit bracket 16. The bracket 16 is comprised of two halves, and the ends of the brackets 16 are inserted into the holes of the transverse slats 3 and the support bracket, respectively.

The second module or unit includes a closing plate 7, a return spring 11, the corrugations 15 and the bearing plate 5. The bearing plate 5 is inserted into the corrugations 15 and are held in them. The bearing plate 5 are pins 18, which are inserted into the adjusting screws 4. Pin 18 of each of the thrust plate 5 is pressed into each adjusting screw 4 in the Assembly and held in the adjusting screw 4 by planting with tension provided by the elastic ring 19, which is located on the pin 18. Return spring 11 is held on the closing plate 7 through the settlement of the DKI with tension.

When assembling the brake mechanisms shown in figures 1 to 5, usually first into the caliper, install the module with the lever 1, then install another module and to the caliper attach the cover plate 7. After Assembly of the brake mechanism will be maintained as a single unit in the brake caliper screws that attaches to the caliper closing plate 7.

When operating in mountainous areas brakes are exposed to high temperatures, and parts that are located near the brake pads and the brake disc, in particular, seal and flute 15, have a limited service life. In such circumstances it would be preferable to have the possibility of replacing the module, the corresponding variant of the invention, shown in Fig.3-5, containing the parts without having to replace the entire mechanism.

In other alternative embodiments of the invention different blocks of the brake mechanism consists of other parts, that is, the brake mechanism can be divided in different places, and brake mechanism may be divided into more than two blocks. Typically the braking mechanism consists of at least two blocks. Specialist in the art will understand, for example, that the brake mechanism may also be divided into three modules, if the brake mechanism is divided in both places, as shown shown in the above embodiments.

The brake mechanism in the embodiment shown in Fig.6, contains as main components a lever 21, the support bracket 22, the transverse rail 23, gear 24, buckles, thrust plate 25, the shaft 26 to restore the original position, the closing plate 21, the adjusting screws 29 and the adjusting mechanism 30. Part of the support bracket 22 performs the function of the cover 32 for the window in the back of the caliper.

In the variant shown in Fig.6, the first module is formed by a lever 21 attached to the support bracket 22 by means of clamps 13.

The second block contains the rest of the above main parts, i.e. the transverse rail 23, gear 24, buckles, thrust plate 25, the adjusting screws 29 and the adjusting mechanism 30. The transverse rail 23 takes two hard site. Each thrust unit includes an adjusting screw 29. One of the thrust units are equipped with an adjusting mechanism 30 and the adjusting shaft. The adjusting mechanism 30 is located on the top of the adjusting screw. Another thrust unit provided with a shaft 26 to restore the original position. The adjusting screws are connected with the provision of the driving action set of gears 24. A set of gears 24 is located between the closing plate 27 and the transverse rail 23. Persistent nodes are connected with the General thrust plate 25, while the thrust plate 25 impact is there on the brake pad (not shown). The shaft 26 to restore the original position is labelled with a corresponding cylinder to install the tool used to restore the original position of the thrust units when you need to replace the brake pads. This movement will be transmitted to the adjusting shaft set gear 24.

The second module is kept as a single unit before Assembly bracket 31. The bracket 31 surrounds the transverse rail 23, and the ends of the brackets 31 are inserted into the holes of the closing plate 27 (see figure 2).

The adjusting mechanism 30 is of known construction. The adjusting mechanism 30 interacts with the lever 21 by means of a thumb lever inserted into the groove 28 in the adjusting mechanism 30. When braking, the finger lever will affect the adjustment mechanism 30 through the groove 28. But since it is not part of the present invention, further description is given here.

During Assembly of the brake mechanism usually first into the caliper, install the module, including the lever 21, and then install a different module and the closing plate 27 is attached to the caliper. After Assembly of the brake mechanism will be maintained as a single unit in the brake caliper screws that attaches to the caliper closing plate 27.

The advantage of modules corresponding to the variant shown in Fig.6, which is in fact the parts subjected to wear may be replaced as a unit without disturbing the seal between the support bracket 22 and the caliper.

The brake mechanism shown in Fig.7, is intended for use when the caliper has no Windows in the back. The support bracket 34 this option has no part corresponding to the cover 32 of the support bracket 2, 22 of the previous embodiments of the invention. Around another variant, shown in Fig.7, is identical to the other options. Thus, a variant embodiment of the invention, shown in Fig.7, is a modular form that contains two or more modules or units. Each module contains at least two items.

1. Brake mechanism for disc brakes, and the brake mechanism is installed in the caliper with the window, at least in the front, while the brake mechanism includes a brake lever, a transverse rail in position is connected with the brake lever, one or more thrust plates on the transverse rail, and a closing plate for closing the open front side of the caliper, whereby the transverse rail is moved by the lever in a plane essentially perpendicular to the plane of the brake disc, wherein the brake mechanism is made in a modular configuration that contains two or more units, p is at least, one of which includes at least two parts, and the fact that each of these modules is a separate unit, which is made with the possibility of withdrawing through the window into the caliper.

2. The brake mechanism according to claim 1, wherein the first module is formed of a supporting bracket together with the lever and shaft to adjust and restore the original position of the brake mechanism, and the remainder of the brake mechanism forms one module, held as a single unit bracket.

3. The brake mechanism according to claim 2, characterized in that the lever is attached to the support bracket by means of tabs.

4. The brake mechanism according to claim 1, wherein one module is formed by a closing plate, ribbed, return spring and one or more thrust plates, and other parts of the brake mechanism form a single module, held as a single unit bracket.

5. The brake mechanism according to claim 4, characterized in that the lever is attached to the support bracket retainers.

6. The brake mechanism according to claim 1, characterized in that the brake mechanism contains three modules.

7. The brake mechanism according to claim 6, characterized in that the first module contains the lever, the second module contains a cross rail adjustment screws, and the third module contains the closing plate, the corrugations of the return spring iodo or more thrust plates.



 

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