IT9020874U1 - LONG LIFE CARDANIC CRUISE - Google Patents

LONG LIFE CARDANIC CRUISE Download PDF

Info

Publication number
IT9020874U1
IT9020874U1 IT020874U IT2087490U IT9020874U1 IT 9020874 U1 IT9020874 U1 IT 9020874U1 IT 020874 U IT020874 U IT 020874U IT 2087490 U IT2087490 U IT 2087490U IT 9020874 U1 IT9020874 U1 IT 9020874U1
Authority
IT
Italy
Prior art keywords
bushing
gasket
cross
pin
ring nut
Prior art date
Application number
IT020874U
Other languages
Italian (it)
Other versions
IT219418Z2 (en
IT9020874V0 (en
Original Assignee
Birfield Trasmissioni
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Birfield Trasmissioni filed Critical Birfield Trasmissioni
Priority to IT02087490U priority Critical patent/IT219418Z2/en
Publication of IT9020874V0 publication Critical patent/IT9020874V0/en
Priority to DE4109133A priority patent/DE4109133C2/en
Priority to FR9103458A priority patent/FR2660030A1/en
Publication of IT9020874U1 publication Critical patent/IT9020874U1/en
Application granted granted Critical
Publication of IT219418Z2 publication Critical patent/IT219418Z2/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
    • F16C21/005—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement the external zone of a bearing with rolling members, e.g. needles, being cup-shaped, with or without a separate thrust-bearing disc or ring, e.g. for universal joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7809—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for needle roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/382—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another constructional details of other than the intermediate member
    • F16D3/385—Bearing cup; Bearing construction; Bearing seal; Mounting of bearing on the intermediate member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/40—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes
    • F16D3/41—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes with ball or roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/41—Couplings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Of Bearings (AREA)
  • Paints Or Removers (AREA)
  • Gasket Seals (AREA)
  • Sealing Devices (AREA)

Description

"Crociera cardanica con tenute a lunga durata" "Cardan shaft with long life seals"

Il presente trovato si riferisce ad una crociera cardanica con tenute a lunga durata, chiamate tenute "long-life". Crociere cardaniche trovano impiego in numerosi campi della tecnica, tra 1'altro in autoveicoli, trattori, macchine agricole escavatrici e simili, e servono per la trasmissione di un moto. E' facilmente comprensibile che in queste macchine le crociere cardaniche sono esposte in modo accentuato agli effetti di sudiciume come ad esempio acqua, polvere, sabbia, terra, ghiaia e piccoli sassolini. The present invention relates to a cardan cross with long-life seals, called "long-life" seals. Cardan crosses are used in numerous technical fields, among other things in motor vehicles, tractors, agricultural machinery, excavators and the like, and are used for the transmission of a motion. It is easy to understand that in these machines the cardan crosses are exposed in an accentuated way to the effects of dirt such as water, dust, sand, earth, gravel and small pebbles.

Ne consegue che la durata di queste crociere cardaniche che alle quattro estremità presentano delle boccole supportate da cuscinetti di precisione, presentano una durata limitata. Dopo un certo lasso di tempo è quindi necessaria la loro sostituzione, fatto che comporta spesso un intervento meccanico non indifferente, che richiede la sostituzinoe dell'intera crociera cardanica e che comporta in modo del tutto indesiderato un fermo macchina. It follows that the duration of these cardan crosses which at the four ends have bushings supported by precision bearings, have a limited duration. After a certain period of time it is therefore necessary to replace them, a fact which often involves a considerable mechanical intervention, which requires the replacement of the entire cardan shaft and which involves a completely undesirable stop of the machine.

Scopo del presente trovato è di proporre una nuova crociera cardanica con mezzi di tenuta idonei a migliorare decisamente la durata del gruppo boccola-cuscinetto della crociera. The object of the present invention is to propose a new cardan cross with sealing means suitable for significantly improving the life of the bushing-bearing assembly of the cross.

Tale scopo viene raggiunto secondo il trovato per il fatto che tra 1'estremità libera della boccola ed il perno della crociera è disposta una guarnizione di tenuta anulare presentante più labbri di tenuta sporgenti e che a detta guarnizione è asservita una ghiera anulare rigida per il supporto ed il posizionamento della guarnizione elastica. Con mezzi di tenuta di questo genere, diventa possibile realizzare una tenuta stagna della boccola, evitando indesiderate infiltrazioni dì particelle piccole, di acqua o fango nonché di particelle più grosse come ad esempio sabbia, ghiaia o piccoli sassolini. This object is achieved according to the invention due to the fact that between the free end of the bushing and the spider pin there is an annular sealing gasket having several protruding sealing lips and that said gasket is enslaved by a rigid annular ring nut for the support. and the positioning of the elastic gasket. With sealing means of this kind, it becomes possible to make a watertight seal of the bush, avoiding unwanted infiltration of small particles, water or mud as well as larger particles such as sand, gravel or small pebbles.

L'oggetto concepito secondo il presente trovato sarà ora descritto più dettagliatamente tramite alcune forme di esecuzione date solo a titolo di esempio ed illustrate nei disegni allegati nei quali: The object conceived according to the present invention will now be described in more detail by means of some embodiments given only by way of example and illustrated in the attached drawings in which:

la figura 1 mostra in vista schematica una crociera cardanica con una boccola parzialmente sezionata; Figure 1 schematically shows a cardan cross with a partially sectioned bushing;

la figura 2 mostra in sezione un particolare del perno e della boccola nonché dei mezzi di tenuta di una prima forma di esecuzione; Figure 2 is a sectional view of a detail of the pin and bushing as well as of the sealing means of a first embodiment;

la figura 3 mostra in sezione un particolare del perno e della boccola nonché dei mezzi di tenuta di una seconda forma di esecuzione, e Figure 3 is a sectional view of a detail of the pin and bushing as well as of the sealing means of a second embodiment;

la figura 4 mostra in sezione un particolare del perno e della boccola nonché di mezzi di tenuta secondo una ulteriore forma di esecuzione del trovato. Figure 4 is a sectional view of a detail of the pin and of the bushing as well as of sealing means according to a further embodiment of the invention.

Come si può rilevare dalla figura 1, la crociera cardanica indicata complessivamente con 1 presenta dei perni 2 sporgenti radialmente, i quali con 1'interposizione di un cuscinetto di rotolamento 3 accolgono boccole 4. Le boccole 4 sono eseguite a guisa di cappellotto e 1'intercapedine tra perno 2 e boccola 4 viene resa stagna con mezzi di tenuta indicati complessivamente con T. As can be seen from Figure 1, the cardan cross, indicated as a whole with 1, has radially projecting pins 2, which, with the interposition of a rolling bearing 3, receive bushings 4. The bushings 4 are made in the manner of a cap and 1 ' the space between pin 2 and bushing 4 is made watertight with sealing means indicated as a whole with T.

I mezzi di tenuta T, illustrati nella figura 2, comprendono una ghiera 5 anulare, in lamiera o altro materiale idoneo. Con la ghiera 5, ad esempio tramite vulcanizzazione o incollamento risulta collegata una guarnizione 6 anulare in materiale morbido elastico, ad esempio Neoprene. La guarnizione 6 anulare presenta labbri 7, 8 e 9 rivolti verso la parte inferiore del perno 2. La ghiera 5 presenta in sezione trasversale forma ad L permettendo, un fissaggio tramite incollamento o accoppiamento a pressione nella sede 10 della boccola 4. Grazie alla previsione della ghiera 5 in lamiera, presentante sezione ad L, viene garantito che oltre ad un rigido accoppiamento con la boccola 4 si intercetta quasi integralmente la fessura formatasi fra il lato interno della boccola 4 ed il perno 2, contemporaneamente, la guarnizione 6 elastica viene supportata con sicurezza e, grazie alla forma e alla rigidezza della ghiera 5 viene garantito un preciso e sicuro posizionamento della guarnizione 6, garantendo soprattutto che tutti i labbri anulari 7, 8 e 9 elastici vengano mantenuti in giusta posizione e contatto con la parte inferiore del perno 2. The sealing means T, illustrated in Figure 2, comprise an annular ring nut 5, made of sheet metal or other suitable material. An annular gasket 6 made of soft elastic material, for example Neoprene, is connected to the ring nut 5, for example by means of vulcanization or gluing. The annular gasket 6 has lips 7, 8 and 9 facing the lower part of the pin 2. The ring nut 5 has an L-shaped cross-section allowing fastening by gluing or pressure coupling in the seat 10 of the bushing 4. Thanks to the provision of the sheet metal ring 5, having an L-shaped section, it is ensured that in addition to a rigid coupling with the bushing 4, the gap formed between the internal side of the bushing 4 and the pin 2 is almost entirely intercepted, at the same time, the elastic gasket 6 is supported with safety and, thanks to the shape and rigidity of the ring nut 5, a precise and safe positioning of the gasket 6 is guaranteed, above all ensuring that all the elastic annular lips 7, 8 and 9 are kept in the right position and in contact with the lower part of the pin 2.

Così, con i labbri 7 e 8 appoggianti contro l'estremità conica del perno 2, nonché con il labbro 9 appoggiante contro una gola circonferenziale del perno, si ottiene una triplice tenuta dinamica. Tramite la ghiera 5 in lamiera, saldamente accoppiata con il lato interno (sede 10) della boccola 4 si realizza inoltre una tenuta statica. Thus, with the lips 7 and 8 resting against the conical end of the pin 2, as well as with the lip 9 resting against a circumferential groove of the pin, a triple dynamic seal is obtained. A static seal is also created by means of the metal ring nut 5, firmly coupled with the internal side (seat 10) of the bushing 4.

1 mezzi di guarnizione T illustrati nella figura 3 corrispondono essenzialmente alla guarnizione secondo la figura 2 e pertanto sono stati utilizzati gli stessi riferimenti . The gasket means T illustrated in Figure 3 essentially correspond to the gasket according to Figure 2 and therefore the same references have been used.

La differenza rispetto ai mezzi di tenuta secondo la figura 2 è da ravvisare nel fatto che tra estremità inferiore del perno 2 ed estremità inferiore della boccola 4 è previsto un ulteriore elemento anulare di guarnizione, indicato con 11. Anche questa guarnizione supplementare presenta forma anulare con sezione trasversale approssimativamente a forma di J. Un braccio Ila risulta alloggiato nella parte inferiore del perno 2 costituita da una gola circonf erenzi ale 12, mentre il braccio llb del corpo di J fa tenuta sull'estremità inferiore della boccola 4. In questo caso, tramite la guarnizione a guisa di J indicata con il riferimento 11, si evita la penetrazione di corpi estranei con maggiore dimensione come ad esempio sabbia, ghiaia o sassoìini, proteggendo da questi corpi estranei la guarnizione 6 successiva supportata dalla ghiera 5 a guisa di L. Mediante i labbri 7 e 8 della guarnizione 6 si evita 1'infiltrazione di acqua e di particelle più piccole come polvere o fango. Mentre con la guarnizione 6 e la ghiera 5 si realizza una tenuta statica sulla boccola 4, con la tenuta 11 supplementare si crea una tenuta statica sul perno 2. Vantaggiosamente, l'estremità del braccio llb della guarnizione 11 appoggia permanentemente contro l'estremità inferiore della boccola 4, realizzando cosi una tenuta dinamica. The difference with respect to the sealing means according to Figure 2 is to be seen in the fact that between the lower end of the pin 2 and the lower end of the bushing 4 there is a further annular sealing element, indicated by 11. This additional gasket also has an annular shape with roughly J-shaped cross section. An arm 11a is housed in the lower part of the pin 2 consisting of a circumferential groove 12, while the arm 11b of the body of J makes a seal on the lower end of the bushing 4. In this case, by means of the J-shaped gasket indicated with reference 11, the penetration of foreign bodies with larger dimensions such as sand, gravel or stones is avoided, protecting the subsequent gasket 6 supported by the ring nut 5 in the shape of L from these foreign bodies. By means of the lips 7 and 8 of the gasket 6, the infiltration of water and smaller particles such as dust or mud is prevented. While with the gasket 6 and the ring nut 5 a static seal is created on the bushing 4, with the additional seal 11 a static seal is created on the pin 2. Advantageously, the end of the arm 11b of the gasket 11 rests permanently against the lower end of the bushing 4, thus realizing a dynamic seal.

La funzione della ghiera metallica 5 nonché della guarnizione 6 a labbri corrisponde sostanzialmente alla guarnizione descritta in precedenza ed illustrata in figura 2. The function of the metal ring 5 as well as of the lip seal 6 substantially corresponds to the seal described above and illustrated in Figure 2.

I mezzi di tenuta T illustrati nella figura 4 comprendono una guarnizione 13 anulare in materiale morbido elastico, presentante un labbro 13a appoggiante contro la parete interna della boccola 4 ed un labbro inferiore 13b, appoggiante contro il bordo anulare inferiore della boccola 4. Detta guarnizione 13 è posizionata tramite la ghiera di supporto 18 o sulla parte 14 conica del perno 2. Inoltre, la guarnizione 13 presenta un prolungamento 13c che penetra nella scanalatura anulare 15 seguente alla parte conica. Il prolungamento 13c forma una sede 16 che accoglie un braccio 17 di una ghiera di supporto e di posizionamento 18 avente forma di L. Il braccio 19 della ghiera 18 presentante sul lato interno un ingrossamento anulare 20 che penetra in una scanalatura 21 praticata esternamente nella parte inferiore della boccola 4. La ghiera 18 a forma di L è realizzata vantaggiosamente in materiale sintetico ri gido-el as ti co. Con i due labbri 13a, 13b che appoggiano contro il lato interno ed il lato inferiore della boccola 4 si realizza una tenuta dinamica, con 1' alloggiamento della guarnizione 13 sulla parte 14 conica del perno 2 si ottiene una tenuta statica. The sealing means T illustrated in Figure 4 comprise an annular gasket 13 made of soft elastic material, having a lip 13a resting against the inner wall of the bush 4 and a lower lip 13b, resting against the lower annular edge of the bush 4. Said gasket 13 it is positioned by means of the support ring nut 18 or on the conical part 14 of the pin 2. Furthermore, the gasket 13 has an extension 13c which penetrates into the annular groove 15 following the conical part. The extension 13c forms a seat 16 which accommodates an arm 17 of a support and positioning ring nut 18 having the shape of L. lower part of the bushing 4. The L-shaped ring nut 18 is advantageously made of rigid, elastic synthetic material. With the two lips 13a, 13b resting against the inner side and the lower side of the bushing 4 a dynamic seal is obtained, with the housing of the gasket 13 on the conical part 14 of the pin 2 a static seal is obtained.

Vantaggiosamente, il braccio 17 della ghiera rigido-elastica risulta solidale con il prolungamento 13c della guarnizione 13, realizzando pertanto un' ulteriore tenuta statica. Con l' innesto a scatto del braccetto 19, 20 nella scanalatura anulare 21 si realizza una ulteriore zona di tenuta. Advantageously, the arm 17 of the rigid-elastic ring nut is integral with the extension 13c of the gasket 13, thus providing a further static seal. With the snap coupling of the arm 19, 20 into the annular groove 21, a further sealing area is created.

Con i mezzi di tenuta finora descritti si riesce a realizzare una crociera cardanica la quale mediante tenute spaciali long-life viene protetta contro l'infiltrazione di acqua e particelle di corpi estranei che possono danneggiare le parti rotanti della crociera cardanica. I mezzi descritti, oltre a migliorare notevolmente l'effetto di tenuta sono economici, affidabili e soprattutto possono essere montati in modo automatico, fatto che è di estrema importanza per le crociere cardaniche che costituiscono un prodotto realizzato in grande serie. With the sealing means described up to now it is possible to realize a cardan cross which by means of special long-life seals is protected against the infiltration of water and particles of foreign bodies which can damage the rotating parts of the cardan cross. The described means, in addition to significantly improving the sealing effect, are economical, reliable and above all can be mounted automatically, a fact which is extremely important for the cardan crossbeams which constitute a mass produced product.

Claims (10)

Rivendicazioni 1. Crociera cardanica con mezzi di tenuta, caratterizzata dal fatto che tra l'estremità libera della boccola (4) ed il perno (2) della crociera (1) è disposta una guarnizione (6) di tenuta anulare elastica, presentante più labbri (7, 8, 9] di tenuta sporgenti e che a detta guarnizione (6) è asserevita una ghiera (5) anulare rigida per il supporto ed il posizionamento della guarnizione (6) elastica. Claims 1. Cardan cross with sealing means, characterized in that between the free end of the bushing (4) and the pin (2) of the cross spider (1) there is an elastic annular sealing gasket (6), having several lips ( 7, 8, 9] and that a rigid annular ring nut (5) is assigned to said gasket (6) for supporting and positioning the elastic gasket (6). 2. Crociera cardanica, secondo la rivendiczione 1, caratterizzata dal fatto che la guarnizione (6) elastica risulta collegata con la ghiera (5) anulare tramite vulcanizzazione o incollamento. 2. Cardan cross, according to claim 1, characterized in that the elastic gasket (6) is connected to the annular ring nut (5) by means of vulcanization or gluing. 3. Crociera cardanica, secondo la rivendicazione 1, caratterizzata dal fatto che la ghiera (5) presenta in sezione trasversale forma ad L. 3. Cardan cross, according to claim 1, characterized in that the ring nut (5) has an L-shaped cross section. 4. Crociera cardanica, secondo la rivendicazione 1, caratterizzata dal fatto che la ghiera (5) risulta collegata saldamente tramite incollamento o accoppiamento a pressione con la sede (10) della boccola (4). 4. Cardan cross, according to claim 1, characterized in that the ring nut (5) is firmly connected by gluing or pressure coupling with the seat (10) of the bushing (4). 5. Crociera cardanica, secondo la rivendicazione 3, caratterizzata dal fatto che un braccio della ghiera (5) ad L intercetta in posizione montata la fessura tra lato interno della boccola (4) e perno (2) della crociera. Cardan cross, according to claim 3, characterized in that an arm of the L-shaped ring nut (5) intercepts in the mounted position the slot between the inner side of the bushing (4) and the pin (2) of the cross. 6. Crociera cardanica, secondo la rivendicazione 1, caratterizzata dal fatto che i labbri (7, 8) della guarnizione (6) elastica appoggiano contro una superficie conica del perno (2) della crociera (1) e che il labbro (9) appoggia contro una gola circonferenziale del perno (2). 6. Cardan cross, according to claim 1, characterized in that the lips (7, 8) of the elastic seal (6) rest against a conical surface of the pin (2) of the spider (1) and that the lip (9) rests against a circumferential groove of the pin (2). 7. Crociera cardanica, secondo la rivendicazione 1, caratterizzata dal fatto che tra 1'estremità inferiore del perno (2) e l'estremità inferiore della boccola (4) è previsto un ulteriore elemento anulare di guarnizione (11) avente forma a guisa di J. 7. Cardan cross, according to claim 1, characterized in that between the lower end of the pin (2) and the lower end of the bush (4) there is a further annular sealing element (11) having the shape of a J. 8. Crociera cardanica, secondo la rivendicazione 6, caratterizzata dal fatto che un braccio (Ila) della guarnizione (11) è solidale con la parte inferiore del perno, mentre il braccio (llb) fa tenuta sull'estremità inferiore della boccola (4). 8. Cardan cross, according to claim 6, characterized in that an arm (11a) of the gasket (11) is integral with the lower part of the pin, while the arm (11b) makes a seal on the lower end of the bushing (4) . 9. Crociera cardanica, secondo la rivendicazione 1, caratterizzata dal fatto che la guarnizione anulare (13) presenta un labbro (13a) appoggiante contro la parete interna della boccola (4) e un labbro (13b) appoggiante contro il bordo anulare inferiore della boccola, che detta guarnizione (13) è alloggiata sulla parte conica del perno (2) e che presenta un prolungamento o ingrossamento (13c) formante una sede (16) accogliente un braccio (17) di una ghiera (18) ad L il cui braccio (19) presenta un ingrossamento (20) che penetra a scatto in una scanalatura (21) anulare prevista sul lato esterno della boccola (4). 9. Cardan cross, according to claim 1, characterized in that the annular gasket (13) has a lip (13a) resting against the inner wall of the bushing (4) and a lip (13b) resting against the lower annular edge of the bushing , that said gasket (13) is housed on the conical part of the pin (2) and which has an extension or enlargement (13c) forming a seat (16) accommodating an arm (17) of an L-shaped ring nut (18) whose arm (19) has an enlargement (20) which snaps into an annular groove (21) provided on the outer side of the bushing (4). 10. Crociera cardanica, secondo la rivendicazione 8, caratterizzata dal fatto che la ghiera (18) a forma di L è realizzata in materiale rigido-elas tico. 10. Cardan cross, according to claim 8, characterized in that the L-shaped ring nut (18) is made of rigid-elastic material.
IT02087490U 1990-03-21 1990-03-21 CARDANIC CRUISE WITH LONG LIFE SEALS IT219418Z2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
IT02087490U IT219418Z2 (en) 1990-03-21 1990-03-21 CARDANIC CRUISE WITH LONG LIFE SEALS
DE4109133A DE4109133C2 (en) 1990-03-21 1991-03-20 Sealing arrangement for sealing a trunnion cross of a universal joint
FR9103458A FR2660030A1 (en) 1990-03-21 1991-03-21 CARDAN JOINT JOINT WITH LONG-TERM SEALING.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT02087490U IT219418Z2 (en) 1990-03-21 1990-03-21 CARDANIC CRUISE WITH LONG LIFE SEALS

Publications (3)

Publication Number Publication Date
IT9020874V0 IT9020874V0 (en) 1990-03-21
IT9020874U1 true IT9020874U1 (en) 1991-09-22
IT219418Z2 IT219418Z2 (en) 1993-02-26

Family

ID=11173385

Family Applications (1)

Application Number Title Priority Date Filing Date
IT02087490U IT219418Z2 (en) 1990-03-21 1990-03-21 CARDANIC CRUISE WITH LONG LIFE SEALS

Country Status (3)

Country Link
DE (1) DE4109133C2 (en)
FR (1) FR2660030A1 (en)
IT (1) IT219418Z2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1641692A (en) * 1992-03-04 1993-10-05 Luciano Peresano Device obviating the snow accumulation on the windscreen-wiper motion limit in the windscreen of the motor vehicles
DE19622444C1 (en) 1996-06-05 1998-02-12 Gkn Automotive Ag Cross pin set for universal joints

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896432A (en) * 1955-03-11 1959-07-28 Borg Warner Bearing seals for universal joints
GB802491A (en) * 1955-03-11 1958-10-08 Borg Warner Improvements in or relating to joints embodying a trunnion and a bearing cup
GB861112A (en) * 1959-01-27 1961-02-15 Gelenkwellenbau Gmbh Improvements in and relating to sealing the pivot pins of universal joints for shafts
GB995934A (en) * 1963-05-30 1965-06-23 Birfield Eng Ltd Improvements in or relating to sealing means for universal joints
US3218692A (en) * 1963-06-05 1965-11-23 Dana Corp Process for assembling a sealing means on the trunnion of a universal joint
DE2908713C2 (en) * 1979-03-06 1985-04-18 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Seal for bearing bushes
US4810233A (en) * 1984-03-27 1989-03-07 Borg-Warner Corporation Interlocking universal joint seal assembly
DE8422559U1 (en) * 1984-07-28 1984-12-06 Birfield Trasmissioni, Brunico SEALING FOR THE BEARING OF THE CROSS OF A CROSS JOINT
DE8437288U1 (en) * 1984-12-20 1985-03-21 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Sealing arrangement for bearing bushes, in particular for universal joints
DE8616597U1 (en) * 1986-06-21 1986-07-31 SKF GmbH, 8720 Schweinfurt Sealing arrangement for rolling bearings
DE8621426U1 (en) * 1986-08-09 1986-09-25 SKF GmbH, 8720 Schweinfurt Sealing unit, especially for bearing bushes of universal joints
US4874349A (en) * 1987-12-07 1989-10-17 Dana Corporation Seal and dust guard assembly for a universal joint trunnion
DE3805443A1 (en) * 1988-02-22 1989-08-31 Gelenkwellenbau Gmbh GASKET, ESPECIALLY RADIAL SHAFT SEAL OR CUFF SEAL
DE3805672C1 (en) * 1988-02-24 1989-03-02 Gelenkwellenbau Gmbh, 4300 Essen, De
DE8805833U1 (en) * 1988-05-03 1988-07-21 SKF GmbH, 8720 Schweinfurt Sealing ring for bearings, especially for bearing bushes of universal joints
DE3818330A1 (en) * 1988-05-30 1989-12-07 Bergische Stahlindustrie Combination comprising a sealing set and pin of a universal-joint spider

Also Published As

Publication number Publication date
DE4109133C2 (en) 1994-03-31
IT219418Z2 (en) 1993-02-26
DE4109133A1 (en) 1991-10-24
IT9020874V0 (en) 1990-03-21
FR2660030A1 (en) 1991-09-27

Similar Documents

Publication Publication Date Title
US4906009A (en) Sealing apparatus
DE3741084C1 (en) Radial shaft seal with dust protection lip
ITTO960321A1 (en) FRONT SEAL GASKET FOR TRACKS WITH SHELTER FOR THE DIRT.
BRPI0712253B1 (en) BEARING BEARING
CN101603585B (en) Vertical type dry well mounting and sealing mechanism of speed reducer
US5833372A (en) Auxiliary seal for a bearing and bearing incorporating such a seal
KR101273176B1 (en) Seal
US4195854A (en) Shaft seal assemblies
IT9020874U1 (en) LONG LIFE CARDANIC CRUISE
JP2007009598A (en) Connecting pin structure of working machine
US3294413A (en) Integral thrust bearing and kingpin bushing seal
EP1327534A2 (en) Sensor-holding hub cap for a wheel hub bearing
JPH0216945Y2 (en)
CN218751099U (en) Thrust wheel structure with good use effect
EP0139381A2 (en) Ring seal
US3184576A (en) Ball joint assembly
CN221159576U (en) Machining center encoder protection casing
JPS5931832Y2 (en) Seal device for cutter wheel center shaft in shield excavator
JPS6238051Y2 (en)
JPH036317B2 (en)
CN216279032U (en) Knuckle bearing hole dust cover and knuckle thereof
BRPI1000989A2 (en) sealing device
JPH0328188Y2 (en)
CN115848524A (en) Thrust wheel structure with good use effect
JPS5910408Y2 (en) Bearing assembly with silver cover

Legal Events

Date Code Title Description
0001 Granted