MXPA99010696A - Improvements in non-tensile directional gudgeon-pin - Google Patents

Abstract

A cast piece with holes which sustain a combination of brake, a rounded joint of a transversal barand houses, by pressure at the center and through a screw, a pin with an integrated direction arm forged with hole to retain the rounded joint of the transversal bar of direction of the vehicle and which fastens the ball-moulds and hubs of the wheels of a vehicle. The cast piece and the pin include holes which fasten a king-bolt and fasten the central axle of the king-bolt to a support mechanism of the vehicle suspension.

Description

IMPROVEMENTS IN NON-TRACTIVE DIRECTIONAL MUNON FIELD OF I-ft, INVENTION The present invention refers to improvements in non-tractive directional stump for vehicles and contemplates the integration of a spider, screw and spigot designed to hold a braking system, whether of the cam type drum or disc type , which are between the ends of the wheels and the mechanisms configured as suspension of a vehicle, in this mechanism are integrated a bar arm and a steering arm.

BACKGROUND DB IA INVENTION It is not uncommon in the field of heavy-duty vehicles to use a control die that controls the direction. Typically, this stump is composed of arms, spike and brake-holder spider, some of these components are integrated or assembled through various clamping mechanisms. The brake-holder spider can be integrated into the trunnion or can be machined and piloted by means of diameters, it is common to drill holes that house screws and washers that fix the spider on the stump, this spider serves to house a system of determined braking, by means of holes that are machined or drilled at their ends. The stump is composed of an integrated spike or houses a spike machined through a machined or drilled hole, this spike is typically inserted under pressure. The integrated or inserted spigot is machined in its external diameter to house a bearing system which can be integrated into a hub where the tires of the vehicle are installed. The steering arm can be integrated to the trunnion or the trunnion is machined to house a steering arm that has machined at its ends, at the inner end it is typically machine to be fastened by means of screws and washers, or it is fastened with a nut through a conical machining with thread on its end. It is common for every steering arm, either integrated or assembled, to have a machined hole that houses a ball joint that receives the movement that comes from the steering box. Some trunnions have a bar arm which can be integrated to the stump or the trunnion is machined to accommodate the arm bar, which has machined at its ends; at the inner end it is typically machine for fastening by means of screws and washers, or it is fastened with a nut through a conical machining with thread on its end. It is common that every bar arm, whether integrated or assembled, has a machined hole that houses a ball joint that transmits, through an acearo bar, movement of the direction to the other "end of the vehicle.

EXHIBITION SUMMARY A set of spider and spigot assembled under pressure, to be used at the ends of the wheels of a vehicle and which have holes in which they are housed: a king pin, a braking mechanism and a bearing system and club where the wheels of a vehicle are mounted. The spider is a cast and center machined piece that houses a forged spike with integrated steering arm, the spider has machined holes that allow a braking system to be fixed at its radial end, it also has at its lower end with an arm that transmits the movement of the vehicle's direction and that allows to attach, through a hole machined at the end of the arm, a ball joint which is attached to a steel bar; at this end a hole is also machined that houses the kingpin. The forged spike is machined radially at its end to allow snap assembly with the spider and houses the assembly system of bearings and hub, at its end has a steering arm through a machined hole will pass a ball joint that is fixed to a steel bar; At the center of the spike is machined a hole that houses the king pin.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a sectional side view of the typical stump assembly, which includes: the inserted spike, the spider with integrated bar arm, the screwed steering arm and screws and washers. Figure 2 shows a terminal view of the assembly shown in Figure 1. Figure 3 shows a terminal view of the assembly of a trunnion that is integrated by. a steering arm, a bar arm, a disc-type brake holder spider. Figure 4 shows a terminal view of the preferred assembly, the view includes the improved features, consisting of: spigot with integrated arm, spider with integrated bar arm and screw. Figure 5 shows a side elevational view of the preferred embodiment shown in Figure 3. Figure 6 shows a fragmented and exposed view of the assembly shown in Figure 1, including the joining of the flange with the portal spider -brake and the location of the screw with the washer. Figure 7 shows a side elevation view of another embodiment of the invention with a disc-type brake holder spider.

DETAILED DESCRIPTION OF THE INVENTION As can be seen in Figures 1, 2 and 3 a trunnion unit includes: the pin 1, the brake spider 2, the steering arm 3, the arm bar 4, and the screws 5, this assembly it is well known as stump 40, and represents the kind of directional stump that is usually found in vehicles. The brake-holder spider 2 and the pin 1 will turn in its diameter 6 to be recessed with pressure, this pressure will prevent the spike from leaving its housing. A bearing mechanism 8 is typically mounted on the outer diameter of the pin 7, which by means of a hub 9 attached to the rims of the vehicle 10, this bearing mechanism 8 remains in its position due to the pressure exerted by a nut 41 of tighten that is screwed to the end 42 of the pin 1. The pin of the trunnion 1 is typically made of forged steel alloy, with a high resistance to performance, mainly supports the forces F7 generated by the weight of the vehicle. The brake-holding spider machined on surfaces 25, 26 and drilled in diameters 27, 28, to house any known kingpin system 29. Brake spider 2 was machined and drilled at its ends 11, 12, 13 to house a braking system that can be of the cam-drum type 16 and the surfaces 15 are machined and the holes 14 are drilled to receive the support of the air chamber by means of screws and washers. Brake-holding spider 2 supports the forces generated by braking Fl, F2, F3 of the unit, typically the brake-holder spider 2 is cast of nodular iron of medium resistance to performance. Figure 3 shows an existing variant of this mechanism that allows the assembly of a disc-type braking system 30, and consists of a trunnion 31 with an integrated steering arm 32, an integrated spigot 33, an integrated stick arm 34. Other variant is shown in Figures 1 and 2 wherein the brake-holder spider 2 is machined 17, drilled 18 and threaded 19 to accommodate the arm in direction 3 by means of screws 5. The steering arm 3 is typically forged from alloy steel with a high resistance to performance. At its end the steering arm 3 has a machining 20 and a drilling 21 that allows the housing of a ball 22, which is fastened to a steel bar 23, the steering arm 3 supports the turning force F4 that is generated by the transverse movement that comes from the steering box of the vehicle and the force to the resistance to the rotation F5 generated by the friction between the rubber of the rims 10 and the tread 24. The forces to the tension F4 that they try to separate the steering arm 3 of the trunnion mechanism 36 are supported by the screws 5. The arm bar 4 as well as the steering arm 3 is typically attached to the trunnion by means of machined 37, threaded holes 38 and screws 39. Tension forces and compression FA supporting the arm bar 4 are generated by transmitting, through a steel cross bar 35, the force of the steering mechanism F2 to the other end of the wheels and by the friction F5 being It operates between the 24th floor and the tires 10 of the vehicle. The bar arm 4 is typically forged from alloy steel with high performance resistance. There are variations in the design that integrate the stump, the bar arm, and the steering arm 40 in one piece as shown in Figure 3, this component can be cast from nodular or forged iron. In an attempt to solve some of the complications resulting from bending forces and to provide a general manufacturing structure easier, less expensive and fewer components than the case of the stump 40 of the current technique and its variants, our invention is on track to a preferred stump 43 as shown in Figures 4 to 7. The stump that we prefer 43 is made essentially of three components. The spigot 44 has an integrated steering arm 45, the component is forged of alloy steel. Specifically, the brake spider 46 integrates a bar arm 47 and is made of perliferous nodular iron, the screw 48 is grade 8. In the spider 46 there is a first machining in the rear base 50 and the central diameter 51 of the spider will be turned brake holder 46. The front base 52 of the shank will be machined, the external diameters of the shank 53, 54 will be turned and machined and the threaded will be made at the end of the shank 55. The shank will be joined by contact pressure 56 44 and the brake holder spider 46, this fixing process can also be carried out using any known chemical process, the machining 52 must be in contact on the surface 57 before the joining process is carried out. The hole 58 in the spider 46 and in the spigot 44 accommodates a screw 48, a compatible torque is applied to the screw 48, which always maintain contact between the surfaces of the walls 53 of both components. While the holes 61, 62, 63 are formed primarily while the part is being emptied, a drilling step is necessary to properly prepare the surfaces so that they can receive the elements to accommodate a drum-type braking system.; the machined and threaded holes 64 are used to screw the brake chamber support therein. The brake-holder spider 46 is machined on the surface 65 and drilled in the diameters 66, the spindle 44 is machined on the surface 67 and drilled in its area 68, to house any known king-pin 69 system therein. The drilled hole and machining 70 houses the nut 71 and the ball joint 72 of the steering rod 73 on the steering arm of the spigot 44, the hole is drilled and machined in the brake arm spider arm 46 to receive the nut 75 and the patella 76 of the transverse bar 77. While the preferred embodiment in figures 3, 4, 5 and 6 illustrates the preferred embodiment of the invention, other spiders can be provided that would be used successfully, although they are not preferred. As will be seen in figure 7, another die assembly essentially includes a disc-type brake holder spider. Although in each of the above-mentioned embodiments the brake-holder spider is preferably formed of cast iron and a forged spike of alloyed material, other materials whose strength properties are similar could be used. Through the preferred embodiment presented in Figures 4-6 and the other embodiment presented in Figure 7, it is clear that a large number of alterations can be made to the stump in question, always within the scope of the invention being claim It should be noted that the known prior art dies, which have been described above, use, in the case of drum cam brakes, a pair of holes in one end of the brake-holder spider, intended to hold one end of the brake. the brake shoes; There are certain configurations of drum cam brakes that use a single hole, to hold both brake shoes of double core. It will be understood by those skilled in the art that if a configuration of the latter requires a brake spider with a single hole, this invention may be applied to such brakes, although the specific forces acting may be different, we have submitted sufficient reports to allow a person designing such brake-holder spider without departing from the spirit and scope of the invention.

Claims (2)

1. CLAIMS 1. Improvements in non-tractive directional stump for vehicle, where the stump includes a spigot, a brake-holder spider, a-screw; characterized in that the pin is formed by a steering arm, a hole for housing a king pin and a hole that serves as an interface between the trunnion and the steering system of the vehicle; and because the trunnion includes a brake-holder spider, it is formed by a bar arm, a hole to house the king pin, and a hole that serves as an interface between the trunnion and the transverse mechanism that goes towards the other end of the vehicle.
2. 2. Improvements in non-tractive directional stump for vehicle, as claimed in claim 1, characterized in that the union of the stump and the spigot is aided by the pressure generated when tightening the screw.