Disk brake

FIELD: automotive industry.

SUBSTANCE: invention relates to automotive industry, particularly, to disk brakes. Proposed disk brake consists of brake caliper and brake throw-in mechanism. The latter is encapsulated into brake caliper and incorporates booster to transmit braking force to push rod arranged to slide in the said brake caliper. It is furnished with pressure plate, fitted on its end on the brake disk side, to transmit braking force to brake disk with the help of brake shoe lining holder and brake shoe lining. Aforesaid pressure plate is jointed to the brake shoe lining holder so that, in applying and releasing the brake, aforesaid push rod shifts from the axis and moves in the brake caliper with the help of aforesaid holder. The latter can move radially and tangentially in the said caliper or said holder. There are appliances to joint the disk brake throw-in mechanism with the push rod pressure plate, on the side opposite the brake shoe lining.

EFFECT: reduces weight, simplified assembly and mounting.

16 cl, 10 dwg

 

The present invention relates to a disk brake, in particular for vehicles, as well as to the holder brake pads used in such a disc brake.

The disc brake system of most of the different structural types have a common goal, which is, on the one hand, maintaining as low as possible structural mass and weight, and on the other hand - in the implementation of Assembly and installation in the car as simple as possible way, without leading to deterioration modes and the projected durability of the disk brake.

Among disc brakes, known in the prior art, inside the housing of the brake caliper usually performed by the mechanism of the brake, and this mechanism includes an amplifying mechanism such as an eccentric mounted lever, and a plunger connected with the reinforcing mechanism, which may be, for example, cross member, the lever, which is driven by a pressure cylinder, increases the braking force produced by the cylinder, through the eccentric installation, and transmits this force to the cross member, which then slides forward to the brake disk, brake caliper covers.

The plunger, or the cross member has a pusher plate from the side of the brake disc, and a push plate which moves in contact with the holder brake pads and shoves him against the brake disc until while the brake pad touches the brake disc and, thus, does not transmit the braking force of the brake disk.

To this end, the pusher must be directed axial sliding in the housing of the brake caliper. While the plunger in the field of strengthening direct mechanism in the housing of the brake caliper, push plate, on the other hand, can be directed through the interior of the levers or plates, brake caliper, which cover the brake disc, or, in the case of the rolling brake caliper, on the support structure of a brake caliper. On the other hand, the plunger can also be submitted to the housing of the brake caliper in the area of the hole, which is located opposite the brake disk.

In all cases, the relevant guides the sliding surfaces in the housing of the brake caliper should be, as far as possible to their construction, are separated to provide better axial guiding of the plunger, which essentially is designed to prevent tipping of the plunger under the application of braking effort. This requires a corresponding sliding surfaces, which must be processed to ensure a certain quality surface on the outer surface of the pusher, on the one hand, and on the inner surface of the housing of the brake caliper, on the other hand. In particular, inside the socket housing of the brake caliper such revision of the housing of the brake caliper, which is usually made of cast iron, is expensive.

In addition, many of the salient despite the good quality of the surface cause an increase in friction, thereby increasing the accuracy requirements necessary adjustment rods in such disc brakes, which sent so that they could be rotated, for example, in the crossmember. As a modification of the sliding surfaces, and the appropriate design and manufacture of the adjusting mechanisms for best regulatory functions in any conditions leads to increased production costs.

Push plate end of the plunger of the brake disk by means of the braking effort transmits the pressure to the holder brake pads, and it should properly distribute the pressure on the surface of the brake lining. Holder brake pads with the brake pad radially and tangentially directed at the body of the brake caliper in the case of brakes with fixed brake caliper or support structure of a brake caliper in the case of brakes with a movable caliper.

For the distribution of brake force push plate has about antionline increased size, is heavier and thus more expensive to manufacture. In addition, the sizes of the pressure plate lead to the restriction of the production of brake caliper with any designs, as in the case of the caliper are elevated mechanical stresses, in particular, in the transition region between the housing of the brake caliper with a mechanism of inclusion and levers and plates brake caliper, protruding outward from the housing and covering the brake disk.

Therefore, the aim of the present invention is to provide a new type of disc brakes, which avoids the aforementioned problems and disadvantages.

This goal is achieved through a disk brake having the distinguishing features of claim 1 of the formula of the invention, the holder and the brake linings for such a disk brake, having distinctive characteristics item 13 of the claims.

The invention is based on the fact that the push plate, which is available at the end of the plunger of the brake disc, is connected with the holder brake pads, so that it transmits the force so that when the brake is being applied, when the brake pad connected to the brake discs and the brake is released when the brake pad due to the lack of extra effort is pressed, for example, return rugini, move back, move the plunger so that it slides along the axis of the brake caliper by means of the holder brake pads.

Such axial displacement, in turn, is caused by the fact that the holder of the brake pads moving in the radial and tangential and, consequently, also in the axial direction together with the brake pad in the brake caliper housing or holder brake caliper.

Thanks to the design according to the invention it is no longer necessary in the execution of the sliding surfaces for the plunger treated accordingly, at the end of the housing of the brake caliper brake disc on the inner surfaces of the levers brake caliper or on the inner surfaces of the support structure in the case of the rolling brake caliper, and the cost, therefore, minimized.

Thanks transmitting force and guiding connection between the holder brake pads and pressure plate, the plate can be configured as a much smaller size. The plate may simply be of a size sufficient to ensure proper distribution of pressure on the brake pad.

Since the guide surface of the holder brake pads according to the present invention also serve as sliding surfaces for settling the displacement of the plunger in the housing of the brake caliper, the exception of the surfaces of the axial sliding in holes in the hull from the side of the brake disc causes a decrease in the total frictional resistance by approximately one third. This, in turn, provides the perfect functioning of interchangeable mechanism even in a simple design with a small tolerance.

Moreover, with a much smaller configuration of the pressure plate provides overall more compact design of the brake caliper with the reduced weight. The critical region in the brake caliper and the areas in which braking significant mechanical impact, for example, the transition region between the housing of the brake caliper and levers surrounding the brake disk may have a configuration that provides greater stability, because of its smaller size the push plate is provided access to a larger design space and, consequently, a greater freedom of layout.

To reduce manufacturing costs it is possible to do without the surface treatment of the second surface of the axial sliding in the housing of the brake caliper.

According to the invention the design of the connection between the push plate and the holder of the brake pads can be used with stationary and movable with the brake caliper. The invention is not limited to certain types of plungers, and pressure plates can work in a cross with two parallel adjusting rods and cylindrical Cams push.

According to the invention the connection between the push plate and the holder of the brake pads and the connection that allows axial movement of the plunger, depend on the fact that the cover plate facing the brake disc has at least one connecting element, which interacts with a complementary shape of the connecting element, which is located on the holder brake pads from the side facing away from the brake disk.

According to one variant of the invention, the cover plate may take the form of a preferably cylindrical protrusion or finger, which takes place in the direction of the brake disc and engages with a corresponding complementary shaped recess in the holder brake pads.

According to another variant implementation of the invention, a finger or projection made by the holder brake pads, goes to the side of the brake caliper housing and engages with a corresponding recess in the pressure plate.

In both cases, it is preferable that was used, at least two protrusions, and d is and deepening at a distance from each other to provide radial and tangential resistance.

In a preferred embodiment of the invention the holder brake pad includes a recess, the dimensions of which are complementary in shape suits the form of the periphery of the pressure plate, so that the push plate is accommodated in this recess.

In another preferred embodiment of the invention the surface of the holder brake pads, turned towards the push plate has two facing each other protrusions that hold the pressure plate, covering her hand. The configuration of protrusions adapted to the shape and the lateral surfaces of the pressure plates, and they preferably have an essentially U-shaped configuration of the edges to provide radial and tangential fixation of the pressure plate.

Common to all embodiments of the invention is that the connection between the push plate and holder brake pads mechanically designed so that the corrected radial and tangential relative movement between these elements. However, according to the invention various connecting elements can be designed in such a way that between them there is at least sufficient clearance to facilitate replacement of brake pads or holders of brake pads.

It is the principle compounds the Oia pressure plate with holder brake linings according to the invention not only simplifies the replacement of brake pads, but also provides a more simple installation mechanism include with the plunger in the housing of the brake caliper.

As in the area of the front openings in the brake caliper is not desired axial alignment surface for the plunger, because this function assume the guides and the mounting surface of the holder brake pads in the brake caliper or support structure of a brake caliper, brake caliper housing and the plunger can be considerably smaller, which further reduces the external dimensions of the disk brake and, therefore, a constructive space. The resulting improved availability also simplifies the installation of such a disk brake in the vehicle.

In addition, according to another preferred variant of the invention, provided with a spring clip, which is set for grasping the holder brake pads and clutch plates to hold them in tight connection, especially when the brake is released and in the off position. The pusher is moved back usually by means of a compression spring, which acts between the housing of the brake caliper and follower, if not enclosed the braking force by reinforcing mechanism.

Thus, for spring is also an effective way to delay the holder brake pads and therefore, the brake back plate away from the brake disk. This eliminates the risk of pulling the brake pads through the rotating brake disk when the brake is released. In addition, the spring clip allows you to avoid the formation of unpleasant vibration noise.

Because the pusher is installed along the axis of the brake disk by means of the guide surfaces of the holder brake pads, axial guide surface for the end facing away from the brake disk made with the possibility of axial movement in the housing of the brake caliper in the immediate vicinity of the amplifying mechanism. Alternatively, the plunger may also be sent by segments amplifying mechanism mounted on these guide surfaces, or a removable device, which is connected with the pusher. These appropriately treated with the guiding surfaces typically have a configuration in the form of four sliding surfaces located opposite each other diagonally.

The invention also relates to the holder brake pads as such, uses disclosed above signs.

Additional advantages and distinguishing features disclosed in further detailed description of embodiments of the present invention, the above cassilly to the accompanying drawings, on which:

Figa is a perspective view of the pusher with the push plate and holder brake pads with the brake pad disc brake according to the first variant embodiment of the invention;

Fig.1b - illustration of these same elements in a different form in the future;

Figure 2 is a front view of the disk brake according to the first variant embodiment of the invention;

Figure 3 is a view in section along the line b-2;

4 is a view in section along the line C-C from Figure 2;

Figa is a perspective view of the pusher with the push plate and holder brake pads with the brake pad disc brake according to the second variant embodiment of the invention;

Fig.5b - illustration of these same elements in a different form in the future;

6 is a perspective view of the pusher with the push plate and holder brake pads with the brake lining disk brake according to a third variant embodiment of the invention;

Figa is a perspective view of the pusher with the push plate and holder brake pads with the brake pad disc brake according to the invention, held together by a spring clip; and

Fig.7b - illustration of these same elements in a different form in the future.

On Figa and 1b are examples of several parts of the disk brake according PE is the first variant of the invention, including a cylindrical plunger 1, which is a push plate, and the holder 3 brake pads, on which the brake pad 4. The plunger 1 is driven by the amplifying mechanism, not shown in more detail here and located in the housing of the brake caliper.

On facing the holder 3 brake pads surface of the pressure plate 2 has two tabs 5 finger type, are aligned with each other at a certain distance from each other.

As shown in Fig.1b, the holder 3 of the brake lining has a corresponding complementary shaped recesses 6, which when the Assembly engage the protrusions 5, preferably with some clearance.

Figure 2 shows the front view of the disk brake, in which is embedded the above elements.

Disc brake includes a brake caliper 7, body 8 of the brake caliper, which holds the drive mechanism, not shown in detail, and two plates or lever 9, which pass over two brake disks 10.

The holder 3 brake pad is moved sideways, radially, tangentially and in the axial direction of the lever 9 by means of the guide surfaces 11.

As shown in Figure 3, the cover plate 2 is connected to the holder 3 brake linings 5 fingers. In addition, as shown in figure 4, Alcatel is 1 or part 12 of the amplifying mechanism, connected with the plunger 1 with the transmission, and the adjusting mechanism inside the housing 8 of the brake disk is moved along the axis of the four surfaces 13 slides, which are placed opposite each other.

As the push plate 2 is connected to the holder 3 brake pads, the plunger 2 is moved, gliding along the axis in the housing 8 of the brake caliper on the surface 13 of the slide and the guide surfaces 11.

Another variant embodiment of the invention shown in Figa and 5b. Here, the cover plate 2 has a recess 14, in which are included and which engage complementary to the shape of the protrusions 15 of the finger-type holder 3 brake pads, connecting, thus, both elements with each other, while avoiding relative movement sideways or along the radius.

Figure 6 shows the preferred embodiment of the invention in which the holder 3 brake pads includes two U-shaped projection 16 at a distance from each other that have a path through which cover the side edges 17 of the pressure plate 2, and thereby ensure that the radial and tangential fixation of the pressure plate 2 to the holder 3 brake pads.

To hold the pressure plate 2 and the holder 3 brake pads in the connection that allows the perfect exhaust brake loser and 4 even when the brake is released, in several embodiments of the invention, in which the tolerance of the gap between the connecting elements 5 and 6, 14, and 15 and 16 and 17 by itself does not allow this, it may be provided with an additional spring clip 18 to cover the pressure plate 2 and the holder 3 brake pads and securely connect them with each other. This spring clip 18 provides immediate removal of the brake pads 4 of the brake disc, when the switching mechanism moves the plunger 1 back to its original position.

1. Disc brake, consisting of brake caliper, which covers at least one brake disk, and mechanism of activation of the brake, which is enclosed in the brake caliper and contains an amplifying mechanism for transmitting the braking force to the plunger which is slidable in the brake caliper and contains at its end side of the brake disc pressure plate for transmitting the braking force by the holder brake linings and brake pads brake disc, the holder brake pads with the brake pad radially and tangentially directed into the brake caliper or the holder, which directs brake caliper, characterized in that the push plate is connected to the holder brake pads so that when enabled, the and the brake is released the plunger when the offset axis is directed through the holder brake pads in the brake caliper.

2. Disc brake according to claim 1, characterized in that the cover plate from the side facing the brake disc has at least one connecting element, which interacts with a complementary shape of the connecting element, which is located on the side of the holder brake pads facing the brake disk.

3. Disc brake according to claim 2, wherein the push plate has two lugs spaced from each other and interacting with the two corresponding complementary shaped recesses in the holder brake pads.

4. Disc brake according to claim 2, wherein the push plate has two recesses spaced from each other and interacting with the two corresponding complementary shaped protrusions of the holder brake pads.

5. Disc brake according to claim 2, characterized in that the holder brake pad has a recess, which accommodates a pressure plate and is complementary to her form.

6. Disc brake according to claim 2, characterized in that the holder brake pad has two opposite ledge that can accommodate a pressure plate, surrounding her side.

7. Disc brake according to any one of p-6, characterized in that between the connecting elements in each case there is a gap with sufficient tolerance for the radial and tangentially fixing the push plate with the opportunity, if necessary displacement of the holder brake pads.

8. Disc brake according to claim 7, characterized in that it has at least one spring clip that goes over the holder brake pads and pressure plate, holding them firmly attached to each other.

9. Disc brake according to claim 1 or 2, characterized in that the pusher is made in the form of a cross having two parallel adjusting rod mounted rotatably on it, and push plate interacts with two adjusting rods.

10. Disc brake according to claim 1 or 2, characterized in that the pusher is made in the form of an essentially rotationally symmetrical Cam has mounted on the adjusting rod, and the push plate interacts with the adjusting rod.

11. Disc brake according to claim 1 or 2, characterized in that the pusher is configured to move in the brake caliper in the area of its end facing the brake disk, and it's exposed reinforcing mechanism.

12. Disc brake according to claim 11, characterized in that the pusher is configured to move in the brake caliper on the four diagonally opposite to the sliding surfaces.

13. Holder brake pads brake disc brake pads made with the possibility of radial and tangential movements in thermotransport or in the holder, directs the brake caliper, wherein the side opposite to the brake pads, devices are provided for connection with a pressure plate of the pusher mechanism of adding disc brakes, while the tool holder brake pads have the same configuration and are designed so that when turned on, and the brake is released the plunger when the offset axis is directed using these tools in the brake caliper.

14. Holder brake pads on item 13, characterized in that it has two cavities, separated from each other, which are complementary in shape to the projections of the pressure plate.

15. Holder brake pads on item 13, characterized in that it has two tabs, spaced from each other and placed in two corresponding complementary in shape to the recesses of the pressure plate.

16. Holder brake pads on item 13, characterized in that it has two opposite ledge, between which is placed push plate by grasping its sides.



 

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