The fastening of the friction lining

 

The invention relates to the field of transport engineering and is intended for mounting of the friction lining to the support plates in the mechanisms of friction interaction. The inventive friction plate (12) fixed to the brake Shoe (11) via a large number of key elements (16) that are fastened with screws (17) to the brake Shoe (11) and interacting with a large number of interconnected them grooves (18) in the cover (12) thus, in order to prevent separation of the plates (12) from the brake pads (11). Key elements (16) are held inside interrelated with them grooves (18) so that will be a limited amount of relative movement between the plate (12) and brake pad (11) in any direction or such movement will never happen. The technical result is to increase the reliability of the friction mechanism and increase lifespan. 6 C.p. f-crystals, 5 Il.

The invention relates to the field of mechanical engineering and, in particular, to the fastening of the friction lining to the support plates, which can be used in a vehicle or other brake systems of vehicles, the clutch mechanisms or other IU the>/p>As for the present description, it mainly refers to the fastening material of the friction lining to the support plates of the brake pads for vehicles, in particular vehicles with heavy operation modes, such as buses, trucks and trailers, which because of their weight and the conditions under which they must work, must have a reliable fastening of the friction lining to the brake pads in order to avoid poor braking and associated consequences. The invention can also be applied to other vehicles such as cars, motorcycles, trains, equipment for operation in off-road conditions, equipment to move the soil to the elevators and to the brake systems of the aircraft, to clutch mechanisms, but also applicable in other machines, where can require tools clutch or brake.

From U.S. patent 2541978, CL F 16 D 69/04, publ. 20.02.1951 known fastening between the friction lining material and a support plate in which the plate is attached to the base plate by becoming jammed elements, removable attached to the base plate with fastening means and the cooperative shall pay the Department pads from the base plate, while the grooves in the surface of the lining adjacent to the base plate, and the other end around the surface of the pads. The fastening between the friction plates and the base plate, for example between the brake pads and backing plates of the brake pads, involves the use of rivets, the connecting plate with the base plate. Rivet heads on the same side of the bracket where the pad, enter the recessed holes, but retain the bracket up until the pads are not worn to such an extent, that the heads of the rivets and interacting with lining the braking surface such as the surface of the brake drum or brake disc that will not be close enough to require replacement of the friction linings. Well known issue with this mount and it lies in the fact that in the recesses for rivets gradually accumulate sand, the friction linings of interacting with them braking surface lead to scuffing or other damage to the surface of inhibition, which leads to the need for periodic maintenance to repair damages the m base) often requires special equipment and may require a significant number of rivets that adds both material costs and labor costs in the manufacture and maintenance of brakes, clutches or equivalent components.

Also known alternative mount that uses direct bonding pads to the support plates without the necessity of using rivets, used hot or cold bonding agents that due to advances in technology binding agents in most cases provide secure fastening. However, under some severe operating conditions, such as in the case of brake systems for trucks, trailers, and especially buses, when a very important safety factor, there are problems concerning the separation of the friction linings (brake pads) from the base plate (the base), and although disorders of the brakes due to such separation, occur very rarely, some of the drivers of trucks and buses is worried about the use of glued brake linings in some difficult conditions. Probably the main reason for the failure of the brakes that use is this and thin, the heat generated during heavy braking, faster is applied to the boundary surface between the cover plate and support plate, with cold or hot bonding agent may be exposed to such an extent that the clutch is broken and the cover is separated from the support plate.

Attempts have been made to create such an attachment between the friction plate and support plate, in which the pad is pressed against the support plate by means of one or more clamping elements attached to the base plate and communicating with one or more associated grooves in the cover plate so as to prevent the separation of the lining from the base plate. One of these mounts disclosed in Australian patent 149358, entitled "Improvements made in the mechanism of the clutch or brake, or concerning him" in the name of Amundsen. However, such proposals involve the use of becoming jammed items that completely pass through the support plate, and with the performance in the grip interrelated with them grooves, which leads to the possibility of moving plates in the transverse direction, or even its similarity with the reference plate at a certain usnei plate and support plate, which eliminates or at least minimizes the above-mentioned problems associated with known rivet, adhesive fasteners, or fasteners, consisting of a wedge and groove, and, in particular, in the last-mentioned fastening allows to eliminate or at least minimize any possibility of substantial relative lateral movement between the cover plate and support plate.

This technical problem is solved due to the fact that the fastening between the friction lining material and a support plate in which the plate is attached to the base plate by becoming jammed elements, removable attached to the base plate by means of fastening and interacting with associated with them the recesses mating configuration in the cover plate so as to prevent the separation of the lining from the base plate, with grooves in the surface of the lining adjacent to the base plate, and the other end around the surface of the lining, according to the invention at least two recesses extending from opposite edges of the lining and partially through the pad, so that the inner ends of the recesses form stops which Sopianae in either direction between the cover plate and support plate will be absent or will have limited value.

Preferably some of the peripheral edges becoming jammed item made so that they have a wedge shape, and the edges are interconnected with them recesses given the appropriate form, resulting in a contact surface having a larger cross-section, which leads to retention pads, exceeding conventional attachment methods, and, in addition, due to differences in coefficients of expansion of the material becoming jammed element and the material of the friction lining, with increasing temperature, at which the fastening, the degree of clamping becoming jammed between the element and the friction lining and the density of attraction friction lining backing plate.

Also preferably, at least one of these becoming jammed elongated elements and comes in a corresponding elongated groove, while they are only partially pass through the boundary surface between the support plate and friction lining on one side and out through this side, and at least another mentioned becoming jammed elements and connected to the groove also only partially pass through the boundary surface on its other side and go through akami, passing through holes in the base plate and becoming jammed in the element.

In addition, becoming jammed elements may also be connected or glued within their respective recesses.

Preferably becoming jammed elements formed in the material of the plates for forming the configuration of the material of the lining.

Preferably between the material of the pads and the base plate there is also a binding agent.

Next will be described the preferred embodiment of the invention with reference to the accompanying drawings, in which: Fig. 1 is a partially exploded view in perspective from below normal brake pads include a variant implementation of the design according to the present invention; Fig. 2 is a view in top plan becoming jammed element used in the preferred embodiment, the structure in Fig.1; Fig.3 is a face view of becoming jammed element of Fig.2; Fig.4 is a perspective view from above becoming jammed element of Fig.2; Fig.5 is a perspective view from below of becoming jammed element of Fig.2.

The preferred embodiment of the invention relates to a brake pad for a vehicle, and the pad has an arcuate configuration for interaction with the filling up of the design of the brake pad, the designated position 10, includes an arcuate, elongated base 11, on which impose, and in this case, a pair of arcuate segments 12 to the brake pads. The inner radius side of the brake pads 11 carries a pair of jumper 14 passing along the length of and beyond the ends of the base, and spaced from each other, and ensuring their parallelism, with each their end also has a through hole 15 for mounting to actuators of the brakes, as is usually done for the brake systems of vehicles. Thus described, the brake block is a normal block, which in the past segments of brake pads were fastened by rivets were stuck on its base, which was shown earlier.

According to this preferred variant implementation of the invention it is possible to do without using a large number of rivets for direct mounting of the respective segments 12 of the brake lining to the brake Shoe and instead use extra long becoming jammed elements 16, stamped, extruded in the form of rollers or otherwise formed from a flat metal sheet. In this example, for each segment overlays the aqueous self-tapping screw 17 becoming jammed for each element in the opposed patent Amundsen, according to which requires two bolts. In addition, unlike patent Amundsen becoming jammed elements are only partially across the width of the base and at work becoming jammed elements interact with the associated grooves 18, respectively, are partially formed on the inner side of the respective segments of the lining. In this preferred embodiment, the design becoming jammed elements 16 are wedge-shaped configuration tapering towards the inside to the base 11, and the grooves 18 attached interfacing with the configuration, in order to effectively prevent separation of the segments of the lining from the Foundation. Segments pads installed using becoming jammed elements placed on the base in position, after which self-tapping screws 17 inserted through the holes 19 in the base 11 for threaded engagement with corresponding holes 20 in becoming jammed elements, and openings for going down the self-tapping screws can be sewn or formed in any other way. Alternatively, the holes 20 can be a hole with the screw thread formed in becoming jammed solid elements, and self-tapping screws replaced with bolts. In Dan is incobrasa form, that is, the periphery 16A reported a tilt angle which is usually around 45owhile the periphery interconnected with them hollows have a corresponding inclination, resulting in obtaining a contact area with a large cross-section, which leads to excellent retention plates compared to conventional mounting methods, and, in addition, due to differences in coefficients of expansion of metal becoming jammed element and the material of the segments brake pads, with increasing temperature, at which the brake system, increases the clamping becoming jammed items and pieces of lining, and the density increases, which segments pads are attracted to the brake Shoe. This effect is impossible in the case of the T-shaped becoming jammed elements in the patent Amundsen, and, in addition, has the probability of breakdown under the pressure of a relatively thin flanges, forming a T-shaped grooves in the rails in the patent Amundsen. Further, in the case of this preferred variant of the construct, the base 11 may be a conventional base having two spaced apart from each other in the transverse direction of the hole 19, which usually come rivets, Ognianovo, that requires only one mounting screw 17 is, therefore, an additional hole is not necessary. In the case of grounds, specially made for the present invention, additional holes 19 is not required. Calculations show that the area of the interacting surfaces becoming jammed elements 16 and grooves 18 will be significantly higher than the space provided in the usual number of rivets used in the normal fastening segments overlays. The optimal number becoming jammed elements and their means of attachment, such as self-tapping screws 17 or bolts, ultimately will be determined by the application, the physical characteristics of the friction lining and the strength of the fastening means on the cut.

The present invention provides resistance segments overlays transverse movement, when it is assumed the use of grooves, only partially formed on the inner side of the respective segments of the lining of one and on the other hand, while becoming jammed elements inserted from both sides, and in addition to prevent the movement of segments of the plates along the length of the base will also be prevented their movement transverse to the base.

In addition to the (hot or cold) on the boundary surface between the line segments of the lining and the ground.

In this embodiment of the invention the ends becoming jammed elements 16 attached semi-circular shape to mate with a semicircular inner ends of the associated grooves 18, which can be obtained from a wedge-shaped circular milling tool, and it is the most convenient way of forming the V-grooves 18. Alternatively, the inner ends becoming jammed elements and interconnected with them grooving can be a simple square, and their outer ends. In the case of a continuous becoming jammed items they can be stamped, for example, brass, high tensile strength, although in another alternative embodiment of the invention a large part of the length becoming jammed elements may be cut from the piece, usually formed by extrusion so as to form a rectangular becoming jammed items, but if they require a semi-circular ends, they may be formed separately formed plastic parts.

Length becoming jammed elements 16 and accompanying grooves 18 passing in the transverse direction on each side of the brake pads may vary with any of the brake pads, and thus the element and the groove, located on the other side, thereby increasing the resistance of the lining to its compartment along the length of the base.

Claims

1. The connection between the friction lining material and a support plate in which the plate is attached to the base plate by becoming jammed elements, removable attached to the base plate by means of fastening and interacting with associated with them the recesses mating configuration in the cover plate so as to prevent the separation of the lining from the base plate, with grooves in the surface of the lining adjacent to the base plate, and the other end around the surface of the pads, wherein at least two recesses extending from opposite edges of the lining and partially through the pad so that the inner ends of the recesses to form the lugs, with whom contact is interconnected with them becoming jammed elements, resulting in either case, the relative movement in any direction between the cover plate and support plate will be absent or will have limited value.

2. Mount under item 1, characterized in that some of the peripheral krimi recesses given the appropriate form, resulting in a contact surface having a larger cross-section, which leads to retention pads, exceeding conventional attachment methods, and, in addition, due to differences in coefficients of expansion of the material becoming jammed element and the material of the friction lining, with increasing temperature, at which the fastening, the degree of clamping becoming jammed between the element and the friction lining and the density of attraction friction lining backing plate.

3. Mount under item 1 or 2, characterized in that at least one of these becoming jammed elongated elements and comes in a corresponding elongated groove, while they are only partially pass through the boundary surface between the support plate and friction lining on one side and out through this side, and at least another mentioned becoming jammed elements and connected to the groove also only partially pass through the boundary surface on its other side and go through this way.

4. The mount according to any one of the preceding paragraphs, characterized in that becoming jammed elements are attached to the base plate by screws, bolts or rivets, the passage is, that becoming jammed elements are also connected or glued within their respective recesses.

6. The mount according to any one of paragraphs. 1-4, characterized in that becoming jammed elements formed in the material of the plates for forming the configuration of the material of the lining.

7. The mount according to any one of the preceding paragraphs, characterized in that between the material of the pads and the base plate there is also a binding agent.

 

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