EP1200750A1 - Articulation - Google Patents

Articulation

Info

Publication number
EP1200750A1
EP1200750A1 EP99953587A EP99953587A EP1200750A1 EP 1200750 A1 EP1200750 A1 EP 1200750A1 EP 99953587 A EP99953587 A EP 99953587A EP 99953587 A EP99953587 A EP 99953587A EP 1200750 A1 EP1200750 A1 EP 1200750A1
Authority
EP
European Patent Office
Prior art keywords
joint
socket
head
shaft
pouring
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP99953587A
Other languages
German (de)
English (en)
Inventor
Werner Herrmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1200750A1 publication Critical patent/EP1200750A1/fr
Withdrawn legal-status Critical Current

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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
    • F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
    • F16D3/845—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers allowing relative movement of joint parts due to the flexing of the cover
    • 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
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/202—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints
    • F16D3/205—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
    • F16D3/2055—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part having three pins, i.e. true tripod 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
    • 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
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/202—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints
    • F16D3/205—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
    • F16D3/2057—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part having four or more pins, e.g. with compensation for relative pin movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
    • 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
    • F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
    • F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
    • F16D3/845—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers allowing relative movement of joint parts due to the flexing of the cover
    • F16D2003/846—Venting arrangements for flexible seals, e.g. ventilation holes

Definitions

  • the invention relates to a joint, in particular an outer joint for the drive shaft of a motor vehicle, having a joint socket which receives a joint head and is open on one side, with a driver transmitting a rotational movement being provided between the joint head connected to a shaft and the joint socket connected to a shaft.
  • the joint head consists of a spherical section which lies in the joint socket and has the catches and which has a catch hub for the shaft in the center.
  • At least the surfaces of the joint socket assigned to the spherical section of the joint head are coated with a lubricating varnish. After this, the joint no longer has to be greased, which on the one hand eliminates a complex work step and on the other hand the requirement for a seal is no longer sc high.
  • the socket is preferably divided lengthways and / or crossways.
  • the joint head can easily be inserted into the open joint socket, and the manufacture of this joint socket is considerably simpler and therefore less expensive. Furthermore, the quality can be checked more easily.
  • the drivers consist of hemispheres which project above the spherical section of the joint head and which are axially parallel to the spherical joint in the socket. cut the following ball grooves.
  • the joint socket expediently has six ball grooves m which engage six hemispheres arranged on the ball section. If there is an increased number of drivers, there is also a smoother run in the bent operation.
  • the joint socket is preferably triangular in cross section and is provided with sliding radii at its corners, the shape of the spherical section being present in the case of cuts in the axis-parallel alignment, and the joint head in the joint socket Axis cross section.
  • the ⁇ er joint head each has a recess between the sliding radii arranged at the corners. The recesses also offer the advantage that depot lubrication can be carried out as a result.
  • the drivers arranged on the spherical section of the joint head each have the shape of a head ellipse in the axis-parallel alignment, which are adapted to the surface of the spherical segment and are provided with a uniform height, and protruding, uniformly high in the joint socket sm ⁇ Pan-ellipses attached, whereby a pan-ellipse comes to lie between two head-ellipses.
  • the stressed cross-section becomes considerably larger, whereby, with the same size of joint socket and joint head, a much larger moment can be transmitted, or the joint can be constructed much smaller same moment to be transmitted.
  • the driving hub of the joint head expediently has a toothing which engages with a corresponding counter toothing of the shaft.
  • the joint head is preferably a die-cast part. With the same machine configuration, the quality is always the same, which significantly simplifies and reduces manufacturing costs.
  • the joint head is made of plastic. As a result, the requirements for the tool required to manufacture the joint head are not so high.
  • the ball section of the joint head is made of plastic, and the drivers are made of metal and embedded in the ball section.
  • THEREFORE are bestuckt ⁇ ie Chebeansprucnten Bereicne with Metali turned dauer ⁇ aft and thus durable, piping ⁇ g gle_cnze ⁇ t an economically cost-effective production is present.
  • a seal closes ⁇ ie side cffene n socket joint, sealed by the shaft of the articulated head protrudes nm prepare-. This protects the joint from contamination.
  • the seal between the socket and the joint head is preferably an elastic sleeve. This type of seal is inexpensive to manufacture and assemble.
  • a lubricant is used to increase the service life m. The cuff prevents the lubricant from escaping and thus pollution.
  • a simple device for performing the method is characterized in that the pouring device has a guide cover closing the joint socket and a pouring flange which can be inserted into the guide cover, through which a guide extends, the guide tube and the pouring flange being connected to one another in a rotationally fixed manner, and the guide tube and the pouring flange have ball-grooving inserts. Through the inserts, the ball grooves required for the articulation of the joint are easily produced during pouring. Machining is therefore not necessary.
  • the joint head After removing the pouring device, the joint head must be connected to a shaft.
  • a shape corresponding to the counter toothing of the shaft is preferably provided on the outside of the guide tube, at least in the region of the joint socket.
  • the inserts After pouring, the inserts must be removed from the joint. In addition, the inserts must always be in the same place so that there is a precise alignment between the inserts on the guide tube and those on the pouring flange. This is expediently achieved in that the inserts in the guide tube are fastened to a lance which can be displaced in a rotationally fixed manner in the guide tube. The inserts are drawn into the guide ring via the movable lance and are there in the protected state after the pouring device has been opened.
  • the inserts on the guide tube and on the pouring flange are provided with feed channels for a pressure medium.
  • the inserts are pressed against the inner wall of the socket and can therefore not be traversed by the pouring material.
  • the pressurization also avoids the impression of the inserts.
  • a pressure control valve is expediently assigned to the inserts.
  • the inserts should be easy to remove from the poured mold after filling the joint socket and during molding form a sharp contour.
  • the inserts therefore preferably each consist of a hollow, compressible balloon, on which solid circumferential edges which form the outlet contours of the ball grooves are formed.
  • a pilot operated air valve is inserted into the pouring flange.
  • the pouring process is further optimized by coordinating the pressure control valve for the inserts and the pilot-operated air valve.
  • FIG. 2 shows a section through the joint of FIG. 1 along the line II-II
  • FIG. 2 shows an alternative embodiment of the representation according to FIG. 2,
  • FIG. 4 shows an alternative embodiment of the representation according to FIG. 3,
  • FIG. 5 shows an alternative embodiment of the representation according to FIG. 1, 6 is a view of the joint head of the representation " according to FIG. 5 in the direction of arrow VI,
  • FIG. 7 shows a development of the circumference of the joint head according to FIG. 6,
  • FIG. 8 shows a section through a pouring device for a joint head according to the representation according to FIG. 1 in the open state, which engages in the prefabricated joint socket according to FIG. 1,
  • Fig. 10 the pouring device according to the illustration of FIG. 9 in a rotated section.
  • a joint 1 with an axis of rotation 2 comprises a joint socket 4 and a joint head 5 with associated drivers 3.
  • the joint socket 4 is hollowed out in a spherical shape, the socket hole 6 of which is smaller in diameter than the joint head 5 with the drivers 3.
  • ball grooves 7 are machined coaxially to the ball radius of the socket 4, in which drivers 3 of the joint head 5 lie.
  • the bend point of the joint 1 is always in the center of the joint head 5 designed as a spherical section 22.
  • the joint head 5 can assume the position shown with a dash-two-dot line.
  • a shaft 8 is inserted, which is hollow and is provided with a stop 10 for the joint head 5.
  • the shaft 8 is flush with the joint head 5, which at this point has a flat 14 which is oriented perpendicular to the axis of the shaft 8.
  • the real Fixation of the rotary movement takes place only through the interaction of the driver 3 with the ball grooves 7, while the pivoting of the joint 1 takes place by the joint sliding of the joint head 5 m of the socket 4, where the joint 1 can no longer be pulled apart.
  • the joint socket 4 has various gradations 11 on the outside and a PTO shaft 12 lying in the axis of rotation 2. Furthermore, on the outside of the joint socket 4, at the end opposite the PTO shaft 12, a circumferential radially oriented sealing groove 13 is incorporated, in which a sealing bead 15 of a seal 16 lies sealingly.
  • the seal 16 is designed as an elastic Manscnette 17 with a large diameter 18 facing the socket 4 and a small diameter 19 assigned to the shaft 8. Folds 20 are arranged between the large diameter 18 and the small diameter 19 of the sleeve 17, which ensure a corresponding flexibility of the sleeve 17 when the joint 1 is bent.
  • the small diameter 19 of the sleeve 17 is fixed on the shaft 8 by means of a clamping ring 21.
  • each ball groove 7 is incorporated, which in cross section have the shape of a semicircle, the center of which lies on the circumference of the ball section 22 of the joint head 5.
  • the transitions between the ball grooves 7 and the socket hole 6 have transition radii 23.
  • the drivers 3 of the spherical section 22 engage in the spherical grooves 7.
  • Each driver 3 nat de shape of a hemisphere 25 which protrude beyond the spherical section 22 of the joint head 5.
  • the joint head 5 has, in the driving hub 9, a toothing 24 distributed uniformly over the diameter, into which an identical counter toothing 48, which is machined on the shaft 8, is immersed.
  • the socket 4 and the joint head 5 are triangular in cross section.
  • the joint socket 4 corresponds to that according to FIG. 3, but in the joint head 5 the radii of the drivers 3 are extended by a distance between the joint head 5 and the joint socket 4 in the area to get between the carriers 3.
  • the recesses 27 formed by the spacing serve to implement depot lubrication in an articulated space 47.
  • FIG. 5 to 7 show a further embodiment of the joint 1, in which six head ellipses 28 are arranged as drivers 3 on the spherical section 22 of the joint head 5.
  • the head ellipses 28 have an elliptical shape in the development, the small radius of curvature of which is cut on the long ellipse axis 29.
  • the head ellipses 28 have the same height over the entire length, with their thickness following the radius of the spherical section 22.
  • Uniformly shaped socket ellipses 30 are arranged in the socket 4. The honing of the socket ellipses 30 and the head ellipses 28 are designed such that there is still little play to the opposite surface.
  • the curvature of the spherical section 22 is designed in such a way that, in each kink position of the joint 1, the distance between the socket ellipses 30 corresponds to the clear width between the head ellipses 28. Thus, there is an almost play-free transmission of the rotary movement in every articulated position of the joint 1.
  • the joint socket 4 is processed further, ie before the joint head 5m is cast in the joint socket 4, at least the surfaces of the joint socket 4 assigned to the ball section 22 of the joint head 5 are coated with a lubricating varnish, the hardening of which takes place in accordance with the regulations of the lubricating varnish manufacturer.
  • FIG. 8 to 10 show a device for producing the joint 1 according to FIG. 1 by means of a pouring device 35.
  • a plane groove 50 is incorporated into a plane side 31 of the joint socket 4, and a plane ring 32 of a guide plate 33 is inserted with a precise fit.
  • a guide seat 34 is incorporated, which has the same diameter as the pan hole 6.
  • the pouring device 35 comprises a pouring flange 36 and a guide tube 37 with associated individual parts attached to it.
  • the piano 32 of the guide cover 33 m of the plane groove 50 of the socket 4 is first placed. Then the guide tube 37 is inserted with a retracted lance 38 m d_e joint socket. Subsequently or simultaneously with the guide ring 37, the pouring flange 36 with its seat cylinder 39 is pushed into the guide seat 34 of the guide cover 33. The pouring flange 36 with the guide tube 37 is thus centered. When the pouring flange 36 is pushed into the socket 4, the inserts 40 located on the pouring flange 36 come to rest loosely. Above the guide ring 37, the inserts 40 are connected to a connecting balloon 51, with which the flat 14 is formed.
  • the inserts themselves represent 0 in the inflated state an elongated Eallon ä represents 9 to which solid, outlet the contours of the ball grooves 7 forming circulating edges are formed 52nd
  • the guide tube 37 and the pouring flange 36 can be displaced on one another, but are non-rotatable relative to one another so that the inserts 40 are always aligned with one another.
  • the same also applies to the lance 38 in the guide tube 37.
  • the lance 38 is inserted into the joint socket 4, the inserts 40 attached to the lance 38 unfolding and lying loosely on the socket wall 41, specifically in the ball grooves arranged there 7.
  • the inserts 40 have a circular shape in cross section.
  • feed channels 42 for filling the inserts 40 are connected to one another, the filling of which takes place before the pouring out.
  • a pressure control valve 43 controls the degree of filling of the inserts 40 during pouring, as a result of which a complete and precise pouring process is achieved. If the pressure is too high, the inserts 40 become too large and they do not fit completely into the ball grooves 7 of the socket 4. If the pressure is too low, the inserts 40 do not fit completely into the ball grooves 7 and are infiltrated by pouring material.
  • the guide cover 33 Before the socket 4 is poured out, the guide cover 33 is firmly pressed together with the pouring flange 36. In the pouring flange 36 there is a pilot-controlled air valve 45 next to an injection nozzle 44. When pouring out, the air present in the joint socket 4 escapes via this air valve 45. The pressure build-up can then be regulated until the pouring material has completely hardened.
  • a not shown control device ensures that only after fully seated correctly Ausg discernverides 35 on the Ge ⁇ joint socket 4 and the presence of pressure in the inserts 40 the pouring begins. This control device is also responsible for the comparison of the control values of pressure control valve 43 and air valve 45 to one another.
  • a check valve 54 and, on the other hand, an air discharge valve 55 are installed in the feed line 53 upstream of the feed channel 42.
  • the inserts 40 are first depressurized. Then the lance 38 is withdrawn and the inserts located thereon are drawn into the guide tube 37. Then the complete pouring device 35 is removed from the joint socket 4.
  • the joint socket 4 is now the poured out part Articulated head 5 is present, which already has the toothing 24 in the driving hub 9. To produce the complete joint 1, it is only necessary to insert the shaft 8 into the joint head 5 up to its stop 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

L'invention concerne une articulation, en particulier une articulation extérieure destinée à l'arbre moteur d'un véhicule automobile, qui comprend une cuvette d'articulation (4) ouverte sur un côté, logeant une tête d'articulation (5), des entraîneurs (3), qui transmettent un mouvement de rotation, étant montés entre la tête d'articulation (5) qui est reliée à un arbre (8) et la cuvette d'articulation (4) qui est reliée à un arbre (12). Pour qu'il soit possible d'obtenir une structure économique de l'articulation, la tête d'articulation (1) est constituée d'une partie sphérique (22) qui repose à l'intérieur de la cuvette d'articulation (4) et est pourvue d'entraîneurs (3). Cette partie sphérique présente un moyeu d'entraînement (9) central destiné à l'arbre (8).
EP99953587A 1998-09-21 1999-08-23 Articulation Withdrawn EP1200750A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19843126 1998-09-21
DE19843126A DE19843126A1 (de) 1998-09-21 1998-09-21 Gelenk
PCT/DE1999/002654 WO2000017534A1 (fr) 1998-09-21 1999-08-23 Articulation

Publications (1)

Publication Number Publication Date
EP1200750A1 true EP1200750A1 (fr) 2002-05-02

Family

ID=7881631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99953587A Withdrawn EP1200750A1 (fr) 1998-09-21 1999-08-23 Articulation

Country Status (3)

Country Link
EP (1) EP1200750A1 (fr)
DE (1) DE19843126A1 (fr)
WO (1) WO2000017534A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002039208A (ja) * 2000-07-26 2002-02-06 Nok Corp 自在継手用ブーツ
DE10132436A1 (de) * 2001-07-04 2003-01-23 Bosch Gmbh Robert Wellenverbindung, insbesondere für ein Ventil zum Steuern von Flüssigkeiten
DE10217149A1 (de) * 2002-04-17 2003-12-24 Zf Lemfoerder Metallwaren Ag Kugelzapfen mit angespritzter Kugel aus Kunststoff
DE102013209493A1 (de) * 2013-05-22 2014-11-27 Behr Gmbh & Co. Kg Gelenkverbindung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1522787A (en) * 1921-05-27 1925-01-13 Meier Charles Cast universal joint and process therefor
US1533425A (en) * 1923-10-17 1925-04-14 Jones Harry James Universal joint
US2529586A (en) * 1945-04-03 1950-11-14 Barber Jesse Method of casting universal joints
US2844947A (en) * 1956-12-31 1958-07-29 Gen Electric Lubrication system for "polygon" type shaft coupling
DE1172488B (de) * 1958-07-05 1964-06-18 Tacke K G F Kardanische Zahnkupplung
US3197535A (en) * 1962-04-20 1965-07-27 Louis H Morin Method of forming three cast-united and relatively movable elements
GB1228571A (fr) * 1967-07-31 1971-04-15
US4141225A (en) * 1977-02-10 1979-02-27 The United States Of America As Represented By The Secretary Of The Interior Articulated, flexible shaft assembly with axially lockable universal joint
GB8829530D0 (en) * 1988-12-17 1989-02-01 Spicer Hardy Ltd Constant velocity ratio universal joints
DE4404256C2 (de) * 1994-02-10 1997-08-07 Netzsch Mohnopumpen Gmbh Drehgelenkkupplung, insbesondere an einer Gelenkwelle einer Exzenterschneckenmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0017534A1 *

Also Published As

Publication number Publication date
DE19843126A1 (de) 2000-03-23
WO2000017534A1 (fr) 2000-03-30

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