FR2648880A1 - UNIVERSAL JOINT DRIVE KIT - Google Patents

Abstract

A drive assembly 16 for a tripod-type universal joint comprises a bearing block 22 and rolling rollers 36 which are retained by two cage parts 42, 44, which are mounted on the respective opposite leading sides of the block of rolling in such a way that the rolling rollers located on each leading side are retained by a single piece of cage. The cage parts are retained on the bearing block by fixing the cage parts, either to one another or to the bearing block.

Description

This invention generally relates to training and more

particularly to sets

  for universal joints of the tripod type.

  US Patent 4,768,990 describes various drive assemblies for a universal tripod joint. All

  shown in Figs. 1 to 5 includes a rolling block

  rollers and two cage parts which are attached to the bearing block. The set represented

  in Figs. 6-7 includes a bearing block and wheels

  Rolling waters which are fixed to the rolling block by pins. The assembly shown in Figs. 8-9 includes a bearing block. rolling rollers

  and two cage pieces that are attached to the roller block

is lying.

  US Patent 4,729,670 also describes several

  drive leads for a universal tripod type joint. The assembly shown in Figs. 1 to 5 includes

  a roller block, trunnion rollers, two

  roller block locks to hold the trunnion rollers and a rectangular sleeve that adjusts to

  the two covers of the roller block. The set represents

  felt in FIG. 6 also includes a roller block,

  trunnion rollers, two wheel block covers

  and a rectangular sleeve that holds the covers

  roller block keys. The assembly shown in Figs. 7-10 includes a roller block, trunnion rollers and two roller retainers which are attached to the bearing block. The assembly shown in FIG. 11 includes a roller block, rollers

  trunnions and a roller sleeve which retains the wheels

water with trunnions.

  The purpose of this invention is to achieve a

  advanced training seems for a universal joint

  gel. To this end, the invention relates to a set

  drive for a universal joint comprising an element

  lower drive which has several

  radial grooves and an external element which has several longitudinal drive grooves the drive assembly comprising a bearing block adapted to be mounted on a radial journal of the universal joint and having a continuous roller path, which itself comprises two rectilinear pistFs which lie on opposite sides of the bearing block which look at the respective ocoose longitudinal flanks of a longitudinal drive groove when the bearing block

  is mounted on the radial journal and that the assembly

  drag is arranged in one of the drive grooves

  longitudinal. a complete set of rolling rollers arranged on the continuous roller path of the rolling block; and a cage mounted in a fixed position on the rolling block so that the rolling rollers roll on the continuous roller path at the

  way of a roller recirculating roller bearing

  leaux, characterized in that the caRe commrend a Promiere and a second cage parts which are mounted on the respective opposite leading sides of the rolling block so that the rolling rollers located on each leading side are retained by one and the same

Cage piece.

  Another characteristic of the invention consists in that the two cage parts are retained on the

  drive unit without requiring a retaining sleeve.

  Another characteristic is that the two cage parts can be identical, so that

  manufacturing costs can be reduced.

  Another characteristic of the invention is that the two pieces of cage can be retained on the drive block by the fact that the two pieces

  of the cage are fixed to each other.

  Other features and advantages of the invention

  tion will appear during the description which follows

  S vre. In the accompanying drawings, given only as

example,

  Fig. 1 is an exploded perspective view of a

  universal telescopic tripod joint with assemblies

  training wheat according to the invention; n0 Fig. 2 is a section taken substantially along line 2-2 of FIG. 1. looking in the direction of the arrows; Fig. 3 is an exploded perspective view of one of the drive assemblies which are shown in 1.5 in FIG. 1; Fig. 4 is a perspective view of the drive assembly which is shown in FIG. 3; Fig. 5 is a section taken substantially along line 5-5 of FIG. 4, looking in the direction of the arrows;

  Fig. 6 is a perspective view of a second

  me embodiment of a drive assembly according to the invention; Fig. 7 is a section taken substantially along line 25. line 7-7 of FIG. 6, looking in the direction of the arrows; Fig. 8 is a top view of a third embodiment of a drive assembly according to the invention; 1n 0 fig. 9 is a section taken substantially along line 9-9 of FIG. 8, looking in the Pens of arrows; Fig. 10 is a top view of a fourth embodiment of a drive assembly according to the invention; Fig. 11 is a section taken substantially along line 10-10 of FIG. 10, looking in the mens arrows; Fig. 12 is a top view of a fifth embodiment of a melon drive assembly of the invention; and Fig. 13 is a section taken substantially along line 13-13 of FIG. 12 looking in the direction of the arrows. We will now refer to the drawings and., More

  particularly, in Figs. 1 to 5, on which the first

  mier embodiment of the invention is shown in connection with a universal joint 10 (telescopic tripod) which comprises an inner drive member 12, an outer drive member 14 and three sets

16.

  The internal drive element 12 comprises three radial journals 18 which are of configuration

  spherical and which are uniformly spaced in the di-

  circumferential rection. The external drive element

  rieur 14 has three drive grooves 20 (longi-

  tudinal), which are also uniformly spaces

  in the circumferential direction. Each groove of

  drag 20 has two flat longitudinal sides 21

  located on the two opposite sides of the drive groove

ment.

  The three drive assemblies 16 are articulated

  strips on the respective radial journals 18, of spherical shape, of the internal driving element 12, and N arranged in the respective driving grooves 20 of the external driving element 14 so that the element internal drive 12 can tilt and

  move in translation relative to the element of

  external drive 14 in a well known manner, and which is described in more detail in US Patent 4,768,990. The typical drive assembly 16 comprises a bearing block 22 (of rectangular shape) having

  a spherical cavity 24 which fits on the straight pin

  corresponding dial 18 which is spherical in shape, for carrying the drive assembly 16 in an articulated manner on the radial journal 18. The rolling block 22 has a continuous roller track 26, of rectangular shape, which is between flanges upper and lower 28 of the rolling block 22. The continuous roller track On 26 comprises two straight tracks 30 which are on the opposite leading sides of the rolling block 22, which means that the two straight tracks 30 look at the sides respective opposite flat longitudinal 21 of a

  corresponding drive groove 20 when the assembly

  1.5 drive ble 16 is mounted on the radial journal 18

  and disposed in the drive groove 20.

  The continuous roller track 26 further comprises des.retours which extend between the ends of the two straight tracks 30. These returns include two straight tracks 32 which are on the opposite ends of the rolling block 22 and a curved track 34 to each end of the straight tracks 30. The length of the rolling block 22, that is to say the length L, measured according to

  the direction of the leading sides which include two pis-

  your straight lines 30, is preferably greater than its width

  geur W measured in the direction perpendicular to the pis-

  your straight lines 30, so that the drive assemblies

  16 cannot be mounted in the drive grooves

  20 only if they are correctly oriented so that

  O place their straight tracks 30 facing the long sides

  flat tudinals 21 of the driving grooves 20. The rolling blocks 22 need not necessarily be rectangular, and it is also possible to adopt other shapes for the returns. However, it is preferable to lengthen the rolling blocks 22 in the direction of the leading sides or straight tracks 30. The drive assembly 16 further comprises a complete lining of rolling rollers 36 which are arranged on the continuous roller track 26, and a two-piece cage 38 which is rigidly mounted on the block of

  bearing 22 in such a way that the rollers roll

  36 roll on the continuous roller track 26 at the

  like a roller recirculating roller bearing.

  n The rollers 36 have the form

  needles and they include at each end

  rillons 40 which cooperate with the flanges 28 of the rolling block 22 to position the rolling rollers 36

in their axial direction.

  The two-piece cage 38 is made up of cage parts 42 and 46 which are mounted on the respective driving sides of the rolling block 22 so that each part of the cage retains the rolling rollers 36 on one of the two straight tracks 30 and on at least part of the returns located at its ends. Parts 42 and 44 of the first embodiment are

  identical, so as to bring an advantage for the fa-

  brication. The typical cage piece 42 includes plates

  upper and lower 46, 48 which have

  peripheral edges 50. 52 which extend from one end

  mite to another, and parts 54, 56 of imprisonment of

rollers at both ends.

  The upper and lower plates 46, 58 fit together

  box on the upper and lower edges 28 of the bearing block 22, the peripheral edges 50, 52 projecting inwards beyond the upper and lower edges 28 to retain the rolling rollers 36 by trapping the pins 40 between the path rollers 26 and the peripheral edges 50, 52 of the part 42 of

the cage.

  1. the imprisonment parts of the rollers 54, 56

  are arranged opposite the respective returns. to the two ex-

  hoppers of the straight track 30 to which the part 42

  or 44 is associated. The imprisonment parties of the rou-

  lenux 5 / A, 56 have curved ends which make

  so that the rollers 36 follow the pis-

  your curves 36 at the two ends of the straight tracks, and straight parts that cover the rest of the return. 1.a peripheral edges 50, 52 and parts

  of imprisonment of the rollers 54, 56 of] a piece 62 deli-

  put a window 58. The rolling rollers 36 aui are on the straight track o0 protrude through the window 58 to come into contact with one of the flanks

  opposite longitudinal flat 21 of the groove of

  drag 20, as shown in Figs. 1 and 4.

  The cage part 44 is identical to the part 42 Pt the corresponding elements are designated by the same numbers. However, part 644 is turned over with respect to part 62 when it is assembled on the block of

  bearing 22, as this is shown most clearly

rement in Fig. 3.

  Stones 42 and 44 of the cage are retained as-

  similar to the rolling block 22 or by means of integrated locking arms, mutually snap-fastening these devices include an extension 60, provided at the end of the part 54 for trapping the rollers

  of each piece of cage, which has a punctured worm

  rusting 62 which engages in a slot 64 of a boss 66 provided at the end of the imprisonment part of the rollers 56 of the other part of the cage which is identical

to the first.

  A second embodiment of the invention is described with reference to FIGS. 6 and 7, which show a

  typical drive assembly 116. The drive assembly

  nement 116 is essentially the same on the drive assembly 16, except that this relates to the method of retaining identical cage parts 142 and 144. In this embodiment, the locking arm devices include a lockout 160 aDD Belonging to an end portion of the roller trapping portion 154 of a cage part, which

  engages in a slot 164 formed in a prop arm

  long offset 166 provided at the end of the part 156 for trapping the rollers of the other cage part,

identical to the first.

  A third embodiment of the invention is described with reference to FIGS. 8 and 9, which show a

  tvDinue 216 training set. Spt training set

  drag 216 is likewise essentially identical to drive assembly 16, except in this case concerns the

  method of retaining identical cage parts 242 and 244.

  In this third embodiment, the devices with locking arms are located on the upper face and on the lower face of identical parts 242 and

  244. In this example, the bottom plate 248 of the part

  this 244 (which is turned over in FIGS. 8 and 9) has end tabs 260 which engage through slots 264 of offset arms 266 provided at the end of the plate

  upper 246 of part 242. The legs 260 which extend

  tooth through the slots 264 are folded over the offset arms 266, as shown in FIG. 9. The locking arm devices provided on the lower face are reversed, that is to say that the lower plate 248 of the part 242 has the tabs 260

  while the top plate 246 of part 244 pre-

  feels split 2AA offset arms.

  A fourth embodiment of the invention is described with reference to FIGS. 10 and 1t, which show a

  typical drive set 316. The drive set -

  ment 316 is also essentially the same as the

  seems to drive 16, except as regards the method of retaining identical cage parts 342 and 34. In this embodiment, identical parts 12 and 344, which are also symmetrical, are retained individually.

  also by the bearing block 322, which has two

  nures 324 in its upper surface and two grooves

  identical 326 in its lower surface. I.Pe plates on

  346 parts 342 and 344 each have two pat-

  iO your ends 360 which are folded into the grooves 324. Likewise, the lower parts 348 of parts 342,

  344 have two end tabs 362 which are folded

killed in the throats 326.

  A fifth embodiment of the invention is described with reference to FIGS. 12 and 13, which show a

  typical 4t6 drive package which is still

  substantially the same as the drive assembly 16, except Pn re which relates to the method of retaining the workpieces

  identical cage 442 and 444. In this embodiment

  tion, the upper and lower plates 446, 448 of the parts 442 and 444 are welded together by points to each other after the parts 442 and 444 have been assembled on the drive block, in upturned positions

  one in relation to the other. For this purpose, the plates on

  446 parts 442 and 444 each have two pat-

  offset weld 460 which covers the end

  lower plates 448 of the opposite part of] a-

ge.

Claims (6)

R E V E N D I C A T I ONS   1. Drive assembly (1A) for a single joint   versel (10) comprising an integrated drive element   laughing (12) which has several radial trunnions (18)   and an external element (14) which has several grooves   longitudinal drive res (20). 1the drive assembly comprising a suitable bearing block (22)   to be mounted on a radial pin (18) of the joint   versel (10) and presenting a continuous roller track (26), which itself comprises two rectilinear tracks (30) which Re are located on opposite sides of the rolling block which look at the respective opposite longitudinal flanks (21) a longitudinal drive groove   (20) when the bearing block is mounted on the turnbuckle   lon radial (18) and that the drive assembly is dis-   placed in one of the longitudinal drive grooves a complete lining of rolling rollers (36) diDooqé on the continuous roller track (26) of the rolling block (22); and a cage (38) mounted in fixed position on the bearing block (22) so that the rollers   bearing (36) roll on the continuous roller track   nlu (26) in the manner of a recirculating roller bearing   rollers; characterized in that the cage (38) comprises   takes first and second cage pieces (42, 44)   which are mounted on the opposite attack sides respec-   bnloc (22) so that the wheels   rollers (16) located on each leading side   are retained by a single piece of cage (42, 44).   2. Drive assembly according to claim 1, characterized in that each cage part (42, 44) has a window (58) through which the rolling rollers (36) which are located on the straight track (30) corresponding protrude to come in contact   with one of the opposite longitudinal sides (21) of the spoke 1!   longitudinal drive type (20).   3. Drive assembly according to claim 1, characterized in that the continuous roller track (26) is configured so that each of the two rectilinear pistest (30) has a curved track (34) at each end; in that the first and second pieces of   cage (42, 44) are mounted in such a way that the wheels   the running tracks (36) are retained on each rec-   tilinear (30) by either of the first and second   cage parts; and in that each piece of cage presents   te a peripheral rim (50.52) which extends from an ex-   end to end, and parts (54, 56) of imprisonment   rollers. situps at both ends, which deli-   put in a window (58) through which the rolling rollers (36) which are on the corresponding rectilinear track (30) protrude to come into contact   with one of the longitudinal sides (21) opposite the spoke   longitudinal drive (20).   k. Drive assembly according to any one   of claims 1 to 3, characterized in that the Pre-   first and second cage parts (42, 443) are retained on the bearing block (22) by the fact that the parts   cage are fixed to each other.   5. Drive assembly according to claim 4, characterized in that the first and second parts of cage (42, 44) identical mount.   6. Drive assembly according to any one   of claims 1 to 3. characterized in this street the pre-   first and second cage parts (142, 344) are retained individually by fixing each of these parts to the bearing block (322).   7. drive assembly * according to claim 6, characterized in that the first and second parts   of cage are identical and symmetrical.