MXPA96006348A - Semi-integrated system of se - Google Patents

Abstract

The present invention relates to a semi-integrated system for sealing an output shaft of a transmission case, the system characterized in that it comprises: a flange that is formed as a plate having a plurality of peripheral aperture to receive fixing screws for coupling the flange to the transmission case, and the flange including a flange housing formed integrally with the flange and adapted to surround the output shaft of the transmission case, a static sealing element for sealing an interface between the flange and the transmission case, and formed as a thread of a rubber material incorporated in the flange by vulcanization, the static sealing element formed as a ring member surrounding a flange area within which the housing is located; and a seal for sealing the output shaft of the transmission case and that is formed as a cartridge received in the flange housing, the seal seal ndiendo: a structural member having first and second separate axial tracks, static sealing means integrally formed with the structural member to seal the structural member against the flange housing, and dynamic sealing means comprising a first radial sealing lip that is sealingly couples to the first axial track, second and third spaced radial sealing lips that seal sealable to the second axial track, and a hydrodynamic seal, wherein the structural member and the dynamic sealing means together form a cavity for receiving grease for the self-lubrication of the interior areas of the retainer and defines an obstacle labyrinth that prevents the ingress of dirt into the grease receiving cavity, wherein the structural member comprises a substantially S-shaped structural member having an external axial arm, an axial arm intermediate that defines the first track, a shorter internal axial arm that e the external axial arm and defining the second axial track, and first and second radial arms connecting, respectively, the external axial arm with the intermediate axial spleen and the intermediate axial arm with the internal axial arm, wherein the sealing means dynamic elements comprises a substantially L-shaped structural element having an axial arm which, in a mounted condition of the sealing system, is adapted to be located adjacent to the output shaft of the transmission case, and a radial arm; of substantially C-shaped seal formed from a rubber-like material and vulcanization connected with the substantially L-shaped element, the dynamic seal means has a first axial arm adapted to be remote, in the condition of the sealing system, of the exit arrow defining the first sealing lip, the first axial arm extending from a free end of the radial arm of the element substantially L-shaped, a second axial arm coextensive with the axial arm of the element substantially L-shaped and defining the second and third lip located at a free end of the axial arm of the substantially L-shaped element, a radial arm connected to the first and second axial arms, and externally bent ribs which are formed on the outer surface of the radial arm of the substantially L-shaped element and defining the hydrodynamic seal, wherein said static sealing means further comprise a sealing element formed as a layer of a rubber material covering the substantially S-shaped structural element to be sealed against the output shaft, and wherein the retainer further comprises a ligated-type spring for supporting the first sealing lip against the first track, and a substantially L-shaped structural cover having an axial arm coupled to an inner surface of the external axial arm of the substantially S-shaped member, and a radial arm having a front portion covering the radial arm of the sealing element

Description

SEFlI-INTEGRATED SYSTEM OF VEDQDURfl The present patent has for its object a system that is exclusively of a kind, that belongs to the field of auto parts and that has been developed to provide better performance and use to provide greater final economy and other benefits in relation to the usual similar means. The traditional way of selling the transmission of motor vehicles, consists in the use of a set of tires, essentially comprised by a mounting flange of the device in the transmission block (in the gearbox).; by a radial winding retainer arranged around the shaft and mounted on the flange by pressing; and by static element, such as a board of cardboard, paste or others, 5 for winding between the flange faces and the transmission block and which is mounted in the operation set of the shift seat. Due to the great use of the assembly as described above, some drawbacks can be assigned to it, ñif the flange, radial seal and element of static aesthetics, which make up the traditional assembly, are originally isolated parts of each other. They are normally supplied to the change plants and / or assemblers before they enter the assembly lines. That form of supply of the set of sales, as it could not be said, is reflected. (* 1 jume ov »items of the large number of items that are added to a vehicle and / or change, leading to an increase in administrative procedures for the supply of the assembly line, such as: storage control, purchase, control of quality and others Such a set of usual welding, in being constituted from originally insulated parts, requires assembly operations of its parts, before entering the manufacturing line of the vehicle and / or the change, which originates to sub-levels of assembly within a change factory and / or assembly, incompatible with the degree of automation achieved and / or intended for these production processes.Another drawback observed with the use of this set of traditional vedado refers to the fact of a Once assembled, it is difficult to find out the origin and / or responsibility of possible defects, since these can be of the parts that make up the assembly and / or assembly of the same made in the manufacture user of the final set. On the other hand, at the level of the spare parts market, the traditional package also presents disadvantages. Rsi is that its application in motor vehicles, generally, is done in workshops, which, to a large extent, may not have all the necessary resources in hand for the proper execution of the assembly, which can lead to defects. That is in particular observed because such traditional assemblies do not allow any control over the static winding element, which acts between the flange and transmission block, during assembly, because, not uncommonly, the interest in that region can not be properly sealed, giving room for leaks.

Another aspect that favors that the aforementioned traditional sealing assemblies provide a defect assembly, when this is done without all the adequate resources, in relation to the fact that the seals of these traditional sealing assemblies are of the kind whose sealing lip radial seals directly against the e e. flsí, if the retainer is not mounted securely in the flange housing and leaks may occur around the shaft. Considering these problems and in order to solve them has been the development serní - integrated vedado system, object of the present patent, which is understood, substantially: by a mounting flange; by * a static rubber seam fillet, originally incorporated in the face of the flange that is turned over for the transmission block; and by a retainer of the kind of cartridge, which is mounted in the flange housing and around the output shaft of the transmission case, whose construction, operation and advantages over the traditional package will be more evident from the detailed description to follow and the accompanying drawings, in which; Figure 1 shows a flange in plan, turned in isolation and starting * from its opposite side to the one that is turned towards the gearbox; Figures 2 and 3 show, cuts, respectively, ft-fi- and B-E, indicated in the previous figure * and the indication of co or < - * •! The retainer is mounted on the flange and the assembly is mounted on the site of use; and Figure 4 presents a sectional detail of the retainer of the kind of cartridge that is part of the system. In accordance with what the above-mentioned figures illustrate, the semi-integrated blind system, object of the present patent, is applied to the edge of the output shaft 1 of the transmission line 2 (FIGS. 2 and 3) of FIG. automotive vehicles and is understood, substantially: by mounting flange 10; by static winding element 20, which seals the gap between the flange and the change block 2; and by retaining radial groove around the ee 1. In the present invention, the flange 10 is a plate provided with peripheral holes 11 receiver-es of the fixing screws to the block of change and housing 12, recipient of the sewage check radial 30; the static veining element 20 is comprised of a fillet of material of the rubber class 21, originally incorporated into the flange by vulcanization process, configured in a closed ring, which delimits the area of the flange in which it is disposed. housing 12, catch 30 receiver and sealing against change block 2; and the radial veining check 30 is an integrated radial veining system (cartridge), mountable in the housing 12 of the mounting flange 10, around the output shaft i of the transmission channel 2 and included, sub'-. tancí by main vein 40-41 endowed with radial veining 44, hydrodynamic vedability 46 and vents 47, 48; by lanes 62, 63, on which they seal the vedaduras 44, 47, 48; by arc to armored 60-61, which houses the vedadurae 44, 46, 47, 48, prevents static seam 74, which seals against the housing 12 of the flange 10 and said box is defined from the lanes 62, 63 and the labyrinth of obstacle to the entry of dirt and shelter for the grease 80 of self-lubrication of the internal regions of the retainer. This form of construction of the system is reduced by reducing the operations of premonition of the set, before being assembled in the place of use, thus diminishing the disadvantages observed with the use of the set of traditional and adapting better to the levels of automation reached and / or intended in the assembly lines of gearbox and / or assembling factories. The present form of construction of the vedado system has as an advantage to facilitate the management of the ummis-t ro of this item for an exchange and / or assembly plant, as well as for the audit work to detect possible faults and others, since all the components of the system, forming a set, have the same origin. On the other hand, the present system provides perfect control over the static winding element 20, during assembly, whatever the printed print to the fixing screws of the flange 10 in the change block 2. Still, in the retainer radial bandage 30 being of i -i cartridge class favors a more secure shrouding around the shaft, all this avoiding possible escapes of assembly. The present system, being provided with retainer of the cartridge class, better absorbs the axial rotation of the output of the transmission, without all the dust / impurity deposited in the surface contact region of the e damaging the sealing lip. Still, because it has its own track and veining system (e e), it becomes dispensable and therefore more economical, the surface finish in the working region of the sealing lip. When the replacement of the part becomes necessary, a great advantage of the present sealing system is observed, since this, being provided with cartridge type retention, it dispenses new works for the elimination of grooves caused by the contact of the seal on the shaft, since it, the seal, works in its own integrated system. In a preferred construction form, according to the attached drawings, the mounting flange 10, inside the basic configuration, can have different variations, selected to adapt to the assembly conditions, considering the model of the change 2 to which it is intended and of which they are part, in addition to the fixing and housing holes 11, elements such as edge 13 and reinforcement ribs 14 and others. The rubber fillet 21, constituted of the static winding element 20, prevents selected section to provide adequate clearance between the flange 10 and the change block 2, within the nominal fastening level of the fixing holes of the flange 10 or within the tnplias strips of tightening levels above or below the nominal, so as to provide * adequate bandage, even if the assembly is assembled without the use of ideal resources, as occurs in certain mechanical workshops and others without better qualification. The cartridge type retainer 30, in a preferential construction (Fig. 4) has the main biasing element 40-41 shaped: by ring-shaped structural element and "L" section 40; and by sealing element of the section rubber class especially in "C" 41, incorporated in that by vulcanization; said structural element 40 is composed of an axial branch 42 arranged close to the axis 1 and by a radial branch 43 prolonged thereof and with a slightly "S" profile. The main veining element 41 is composed: by first radial veining lip 44 with hydrodynamic sealing fins, formed in extension of axial rubber, extended from the free edge of the branch of radial structural element 43, mentioned lip is of the kind that works in collaboration with spring of class "garter" 45, seals against a first track 62 of box 60-61; by nerves / grooves of hydrodynamic veining 46, arranged on the surface of the radial structural element frame 43 turned externally and that makes possible the pumping of the oil, which can try to overcome the static winding in relation to the e; and per second 47 and third 48 sealing lips disposed on the free edge of the axial structural element branch 42 and sealing against second axial track 53 of the case 60-61. The box 60-61 is comprised, basically: by structural element 60; per element of material of the class 61 rubber incorporated in that in the vulcanization and is closed by seal in "L" 71-72. The structural element 60 is formed by a first substantial "S" part, composed: by first internal end axial branch 64, with free end terminated in axially double 65 internally turned and that defining the second axially positive track 63; by intermediate axial branch 66, defining the first axial raceway 61; and by second external end axial branch 67, longer than the internal end 64, with slightly "S" profile and ending in radial tip 68 internally turned; said first "S" part of the structural element 60 of the box 60-61 is still composed of two deflected radial branches 69, 70, which connect the axial ones. The sealing element 61 of the box 60-61 is composed of a rubber layer, which covers the external surface of the first "S" part of the structural element 60 of the ca to 60-61, from the radial end portion 65. up to median double of the second outer end axial branch 67; in this it defines layer 74 sealing against the housing 12 of the mounting flange 10; and in the radial end bore 65 defines lip 75 of winding next to e e l. The "L" seal 71-72 of the box 60-61 is formed: by axial branch 71, which is mounted next to the inner surface of the second outer end axial branch h f; and by radial branch 72, with a slightly "S" profile, which is adjacent to the radial radius of the radial vein element 40-41 and terminated near the axis 1, in relation to the one defined in annular space 73, at a level from which the ribs / grooves of the roddynamic winding 46 are disposed. The internal space to the retainer, defined between radial sealing element 40-41 and box 60-61 is filled with fat 80. Within the basic construction, described above, It presents that the serni-integrated vedado system can undergo modifications that are relatively material, dimensions and constructive details, without fleeing from the scope of protection of the patent.

Claims (3)

NOVEDOD OF THE INVENTION CLAIMS

1. - Semi-integrated system of bandage comprised, substantially: by mounting flange (10); by static winding element (20), which seals the gap between the flange and the block of the gearbox (2); and by a radially sealed retainer (30) around the transmission shaft (1) characterized in that the flange (10) is a plate provided basically with peripheral holes (11) receiving the fixing screws to the change block and of housing (12), receiver of radial seal (30); the static veining element (20) is comprised of a fillet of material of the rubber class (21), originally incorporated into the flange by vulcanization process, configured in a closed ring, which delimits the area of the flange within which it remains disposed the housing (12), receiver of the retainer (30) and sealing against the change block (2); and the radial veining retainer (30) is an integrated veiling system (cartridge), which can be adjusted in the housing (12) of the mounting flange (10), around the output shaft (1) of the transmission case (2). ) and comprised, substantially: by principal vein (40) - (4l) endowed with radial veining (44), hydrodynamic vedability (46) and vedad? ras (47), (40); by pin (b?), (63), copper that seal the vedaduras (44), (47), (48); by armored box (60) - (61), which houses the glazes (44), (46), (47), (48), prevents static seaming (74), which seals against the housing (12) of the flange ( 10 and defining of the tracks (62), (63) and of obstacle lane to the entry of dirt and coatings for the fat (80) of self-lubrication of the internal regions of the seal 2.- Serni-integrated system according to claim 1, characterized in that the rubber fillet (21), constituting the static winding element (20), prevents selected section to provide adequate clearance between the flange (10) and the change block ( 2), within the nominal tightening level of the fixing screws of the flange (10) or within wide strips of tightening levels above or below the nominal 3.- Semi-integrated sealing system as claimed in 1, characterized by the fact that, in a preferential construction, the retainer of the cartridge class (30) has the structural element in the form of a ring and an "L" section (40); and by sealing element of the rubber class of section essentially in "C" (41), incorporated in that by vulcanization; said structural element (40) is composed of an axial branch (42) arranged close to the axis (1) and by an axial branch (43) prolonged thereof and with a slightly "S" profile; the veining element (41) is composed: by first * radial vortex lip U) c n lota < This is made of in-line rubber, conformed in axial rubber extension, extended from the free edge of the branch of radial structural element (43), mentioned lip is of the kind that works in collaboration with spring of the class "gar + er" ( 45) and seals against a first track (62) of the box (60) - (61); by nerves / grooves of hydrodynamic veining (46), arranged on the surface of the branch of radial structural element (43) turned externally and that makes possible the pumping of the oil, which can try to overcome the static winding with respect to the axis; and per second (47) and third (48) sealing lip disposed on the free edge of the axial structural element branch (42) and sealing against second axial track (63) of the shaft (60) - (61); this is understood, basically; by structural element (60); per sealing element of rubber class material (61) incorporated therein in the vulcanization and closed by "L" seal (71) - (72); said structural element (60) is formed by a substantially "S" first part, composed: by the first inner end axial branch (64), with free edge -termined in axial fold (65) internally turned and the one defining the second track of veiling (63); by intermediate axial branch (66), which defines the first axial raceway (62); and by second outer end axial branch (67), longer than the inner end (64), with slightly "S" profile and ending in radial tip (68) turned internally; said first "S" part of the structural element (60) of the box (60) - (61) is still composed of two doubled radial branches (69), (70), which interconnect the axial ones; the sealing element (61) of the slit (60) - (61) is composed of a rubber layer, which covers such external surface of the first "S" part of the structural element (60) of the box (60) - (61), from the radial end section (65> to the median end of the second outer end axial branch (67), in this case it defines a layer (74) sealing against the housing (12) of the mounting flange (10). ), and in the radial extreme section (65) defines lip (75) of vedado next to the axis (l), the seal in "L" (71) - (72) of the box (60) - (61) is with -formed: by ra or axial (71), which is mounted next to the inner surface of the second outer end axial branch (67), and by radial branch (72), with slightly "S" profile, which is adjacent to the branch Radial of the radial veining element (40) - (41) and terminated near the ee (1) in relation to the one that defines a ring-shaped space (73), at the level of which the nerves / grooves of hydrodin veining are arranged mica (46), and the internal space to the retainer , defined in the radial veining element (4U) - (41) and box (60) - (61), is filled with grease (80). RESuRE OF THE INVENTION Patent of invention serní-integrated system of bandage. The present patent refers to integrated serni-5 system applied to the edges of output shaft (1) of the transmission case (2) of motor vehicles and is comprised, substantially, by mounting flange (10); by static winding element (20), which seals the gap between the flange and block of the gearbox (2); and by catch 10 (30) radially spaced about the axis (l); said flange (10) is a plate provided, basically, with peripheral holes (11) receiving the fixing screws to the engine and housing block (12), receiving the radial veining retainer (30); the element of static winding 820) is understood by 15 a fillet of material of the rubber class (21), originally incorporated into the flange by vulcanization; and the radial seal retention (30) is of the cartridge class, adjustable in the housing (12) of the mounting flange (10), around the output shaft (1) of the transmission case (2). twenty C & G / cgt * : > ? pqe / ioo?