DD150498A5 - SHAFT CLUTCH - Google Patents

Abstract

The invention relates to a shaft coupling with a first and second Kupplungshaelfte and arranged therebetween torque-transmitting kinematics, which allows an axial offset of the shafts, an intermediate member whose axis is aligned with the shaft axes in aligned shafts, and coupling members, for driving connection of the first Kupplungshaelfte and the intermediate member and the Intermediate link and the second coupling half. The aim and task is a simple structure, in particular only pivot bearing with a relatively small diameter are required and ensure a perfect rotational movement transmission even with aligned shafts. Erfindungsgemaesz at least two coupling members with respect to the axis of the intermediate member are diametrically opposite each other and pivotable about tangentially extending pivot axes on d. Intermediate member stored. The coupling members are articulated on all sides on the coupling halves and compensating means are provided for compensating the shortening of the coupling links associated shortening of the axial distance of the coupling element ends. The coupling links may be straight connecting pins, are received with spherical thickenings at their ends, d.in complementary complementary receiving members.

Description

Berlin, September 17, 1980 56 940 16

shaft coupling

Application field of the invention

The invention relates to a shaft coupling comprising: a first and a second coupling half and a torque transmitting kinematics between the coupling halves, which allows an axial offset between the shafts, with an intermediate member whose axis is aligned with the shaft axes in aligned shafts, and coupling members which a drive connection between make the first coupling half and the intermediate member and between the intermediate member and the second coupling half.

Ch arakteristik the known technical solutions

In a known coupling of this type (US-PS 4 040 270) intermediate links in the form of rings are provided, which are mounted concentrically on each other. The ring is connected via a first link with a drive-side coupling half and a second link with a driven-side coupling half. The coupling allows an angle-faithful transmission of rotational movement between rotating parts, wherein at an axial offset, the handlebars and the rings perform compensating movements. The links perform reciprocating pivotal movements while the rings simultaneously perform a reciprocating rotary motion relative to one another. Such a coupling allows a kinematically perfect angle-true coupling of rotational movements even with a relatively large axial offset.

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In this known coupling relatively large bearings are required because the rings are superimposed.

There are also known clutches in which a disc-shaped intermediate member via a parallel link transmission consists of three mutually offset by 120 ° links with a drive-side coupling half and a second parallel link transmission with also three offset by 120 ° to each other links with a driven-side coupling half is connected (DE- PS 1 233 667). Such couplings also allow a kinematically perfect transmission of torques, but only if there is an axial offset between the shafts to be coupled together.

Object of the invention

The object of the invention is to simplify both the construction of the clutch and to reduce the centrifugal force and thus to allow higher speeds.

The invention has for its object to provide a coupling of the type defined as simple as possible, in which in particular only pivot bearing with a relatively small diameter are required and which ensures a perfect transmission of rotational movement even with aligned shafts.

According to the invention, this object is achieved in that

(A) at least two coupling members with respect to the Abhse. the intermediate member diametrically opposite each other and tangentially extending pivot axes

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3 are pivotally mounted on the intermediate member,

(B) the coupling links are articulated on all sides movable to the coupling halves, and

(C), compensating means are provided to compensate for the shortening of the axial distance of the coupling element ends associated with a pivoting of the coupling members.

The coupling links are expediently formed by straight connecting bolts which have spherical thickenings at their ends, the spherical thickenings being accommodated in complementary receiving members. I _n a further embodiment of the invention are diametrically opposed radial eyes provided on the coupling halves to each other, wherein the receiving members are designed as rubber body sitting in the radial eyes · This rubber body are resilient in the axial direction deformable and act as compensation means for the shortening of the _a xialen distance of the coupling links.

According to a further feature of the invention, the compensation means for the shortening of the axial distance of the coupling element ends are designed as links, which are articulated at one end via ball joints to the Kupplnngshälften, extend substantially tangentially to the coupling halves and at the other end in each case via a the spherical thickening containing ball joint are hinged to the connecting bolt.

The links also have a pair of eyes at the ends

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each receiving a gum body with concave-spherical inner surfaces. In this case, the spherical thickening of the connecting bolt and in the other rubber body a spherical end of a seated on the coupling half axial bolt are received in the one rubber body.

It is advantageous if in each case a sliding layer is provided between the rubber bodies and the spherical thickening or the spherical end.

The invention is further characterized in that two pairs of each have a common tangent to the running of the intermediate member pivot axis are pivotally supported on opposite sides of the intermediate member of adjacently arranged coupling elements and one end of each coupling member is connected via a ball joint to a link "in turn, is articulated via a further ball joint on the respectively adjacent coupling half. The links may be arranged substantially tangentially, with the links connected to the coupling links of a pair each extending in opposite directions.

It has proven to be advantageous that the two coupling members of each pair are rigidly connected together.

According to a further embodiment of the invention, the intermediate member is a frame of rectangular basic shape, wherein coupling member base body extend with a substantially double-wedge-shaped along a pair of opposite side parts of the frame and sit on a respective shaft, which with their vorste-

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18 6 6 1

Henden ends are stored in the other side parts of the frame. Furthermore, pairs of aligned pins with spherical thickenings are provided on the coupling element main bodies on opposite sides, which form the latter joint balls of the ball joints. The shaft coupling is further characterized by the fact that between the two coupling halves, a first and a second intermediate member is provided, a first pair of coupling members with respect to the axis of the first intermediate member diametrically opposite each other and is mounted to tangentially extending pivot axes on the first intermediate member and a second pair of coupling members are diametrically opposed to each other with respect to the axis of the second intermediate member and mounted to the second intermediate member with respect to the first pair by substantially 90 degrees angularly displaced about tangentially extending pivot axes.

Here, the second intermediate member may be a ring saln which encloses the first intermediate member and having radially projecting AERTS inh-bearings in which the coupling members of the second pair are pivotably mounted with journals. It is also possible that the two intermediate members have a double-T-shaped basic shape and are arranged crossing each other, being provided at the ends of each crossbar of the double-T's bearing eyes for supporting the coupling members.

In such a coupling, the coupling links permit misalignment. The intermediate member ensures that the coupling members can not dodge in the twisting sense in the transmission of torques, but are kept substantially axially aligned. An axle

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offset in the one direction relative to the intermediate member made by the pivotal movement of the coupling links light. An axial offset in the plane perpendicular thereto is made possible by a tilting of the intermediate member. The compensation means compensate for the axis by tilting the coupling members to the circulation-related changes in the axial distance of the coupling element ends. These compensatory remedies can be different in nature «

In operation, there is an offset in a certain plane. The coupling rotates relative to this plane, with the states "pivoted coupling links" and "tilted link" alternating.

The invention is explained below in some embodiments with reference to the accompanying drawings:

Fig. 1: shows a longitudinal section through a coupling according to the invention;

Fig _e 2: shows a section along the line AB of Fig. 1; ,

Fig. 3: shows a section along the line C-D of Fig. 2;

Fig. 4: shows a longitudinal section through another embodiment of the invention, wherein the pin is to think of the type of Fig. 1 at an intermediate ring to think «*

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FIG. Fig. 5: shows a section along the line E-F of Fig. 4;

Fig. 6: shows a section along the line G-H of Fig. 7;

Flg.F: shows a longitudinal section through the modified embodiment ₍ wherein the pin is pivotally mounted on an intermediate ring similar to Figure 1;

FIG. 8: shows a longitudinal section similar to FIG. 4 through another embodiment of the invention; FIG.

Fig. 9: shows a section along the line 3-K of Fig. 8;

Fig. 10: shows a further embodiment of the invention in a representation similar to Fig. 9;

Fig. 11: shows a cross section through a further embodiment similar to that of FIG. 10;

Fig. 12: shows an associated longitudinal section;

Fig. 13: shows a longitudinal section through a further embodiment;

Fig. 14: shows a section along the line L-M of Fig. 13;

FIG. 15: shows a further modification of an inventive

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proper coupling ι

FIG. 16: shows a still further modification of the coupling according to the invention

10, a first coupling half is designated, which can be placed on a shaft by means of a wedge guide XSt ₁ , denoted by 14 is a second coupling half, which can be placed on a second shaft by means of a wedge guide 16 _e The first coupling half 10 points diametrically opposed radial eyes 18 and 20, respectively. Corresponding radial eyes 22 and 24 has the second coupling half 14. With 26, a connecting bolt is referred to, which at its two ends spherical thickenings 28 and ' 30 has. The spherical thickenings 28; 30 are about complementary rubber = body 32 and 34 in the eyes 18bzw. 22 stored. This is a pivoting with respect to the coupling halves 10 and 14 given, with the rubber body 32 and 34 can deform according to their nature. A corresponding bolt 36 with crowned ends 38 and 40 is mounted over rubber bodies 42 and 44, respectively, in the eyes 20 and 24 respectively. The two bolts 26 and 36 are, as best seen in Fig. 2, with pins extending transversely thereto 46 and 48 or 50 and 52 in rolling bearings 54, 56 and, 58, BO stored in an intermediate ring 62. This intermediate ring can also be designed as a rod. The bolts 26 and 36 are thus, relative to the intermediate ring pivotable about axes 64 and 66, which run tangentially to the circumferential direction of the intermediate ring «

When, for example, the coupling half 10 is driven ;, so would ', for example, "the eye 18 to the front and the eye 20 to move backwards" Without the Zvvi-

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Therefore, as seen from above in Fig. 1, the link 26 would tilt counterclockwise and the link would tilt clockwise. This is prevented by the fact that both arms about the axes 64 and 66 are pivotally supported in the intermediate ring 62. Upper bolts 26 and 36 thus the second coupling half 14 is immediately taken winkba true even at a certain radial misalignment. This is kinematically perfectly, as long as aer radial offset is within the scope of the pivoting of the bolt, which allow the rubber body. However, the coupling also allows, depending on the embodiment, a corresponding axial offset. In the plane of the paper of Fig. 1, such a misalignment can take place in that the arms and 36 pivot parallel to each other. In the plane perpendicular thereto is also a pivoting of the bolts 26 and 36, but under tilting of the intermediate ring. The associated with this tilting axial movement of the spherical ends 28; 30 and 38, respectively; 40 relative to the coupling members 10 and 14 may in the embodiment of Figure 1 by elastic deformation of the rubber body 32; 34 and 42, respectively; 44 be balanced.

In the embodiment of Figures 4 to 7 is not a single continuous bolt is provided, which is hinged directly to the coupling halves 10 and 14, respectively, as in the embodiment of Fig. 1. Rather, a bolt 68, which is similar to the bolt 26 is mounted on an intermediate ring, mounted in a perpendicular to the paper plane of Fig. 4 extending link 70. This storage is also carried out by means of a spherical end 72 of the bolt 68, which is held in a rubber body 74, which in turn sits in an eye 76 of the arm 70. The handlebar 70

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is in turn at its other .END on a pin hinged The pin 78 has a spherical end 80 in aer same radial plane as the end 72 of the bolt 6S on "This spherical end 80 is held in a rubber body 82 in an eye 84 of the link 70 is sitting. The handlebar 70 is thus pivotally mounted on all sides with respect to the pin 78. It is furthermore universally pivotable with respect to the bolt 68. As is apparent from FIG. 5

is best seen, the handlebar extends substantially tangentially with respect to the rotation about the axis 86 * The pin 78 is seated on a radial projection 88 of a sleeve-shaped coupling half 90 which is coupled via a spline connection 92 with a shaft **

Similarly, a bolt 94, which corresponds to the bolt 36 of FIG. 1, is mounted with a spherical end 96 in a handlebar 98 (FIG. 5). The thickened end 96 of the bolt 94 is seated in a rubber body 100 of a grain-like shape. which in turn is held in an eye 102 of the handlebar 98. Between the rubber body 100 and the thickened end 96 is shown in the lower part of Figures 4 and 5, a sliding layer 104 This sliding layer 104 facilitates the ReIatiwerdrehung of bolt 94 and handlebar 98 »

The handlebar 98 is, as shown in FIG. 5 can be seen, in a similar manner as the handlebar 70 hinged to a pin 106 which sits on a radial extension 108 of the coupling half 90. This pin 106 has a spherically thickened end 110, which is mounted on a sliding layer 112 in a rubber body 114, which in turn held in an eye 116 of the handlebar 98

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becomes. The links 70 and 98 extend antiparallel to each other, as shown in FIG. 5 can be seen.

Figs. 6 and 7 show the other side of the coupling.

The structure is substantially the same as in Figs. And 5 and therefore not described in detail.

The coupling half 118 carries on radial lugs 120; 122 pins 124 and 126, which are connected via ball joints, similar to Fig. 4 and 5, with handlebars 128 and 130, respectively. The links 128 and 130 are in turn connected via ball joints with the spherical ends 132 and 134 of the bolts 94 and 68, respectively.

Again, the links 128 and 130 are arranged antiparallel to each other and substantially in the tangential direction ·

The links 70 and 98 or 128 and 130 allow a compensation of the "shortening" of the bolts 26 and 36 in a pivoting movement resulting from an axial offset of the coupling halves 10 and 14. In this case, a pivoting movement of the handlebar, z. As the handlebar 70 in Fig. 4 both in the plane of Fig. 5 and in the plane of Fig. 4. This balance does not need to be done by the rubber body alone. It can be accepted as in the embodiment of Fig therefore a greater hsversatz A _c. 1 a ', Vinkelversatz of the two shafts to be coupled is also possible to today.

In aer embodiment of Fig. 8 and 9 are the

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17. 9. 1980 56 940 16 _A

Handlebar levers 136, 138 V-shaped parts, which at the two ends and in the middle in each case have an eye 140, 142 or ", 144, 146 and 148 or", 150 ", take the eyes 140 and 142 or * 144, 146 depending on a ball joint of the type described, with which the handlebar levers 136 and ', are hinged to pins of a coupling half 152, of which in Fig. 8, the pins 154 and 156 are shown in dashed lines «The eyes 148 and 150 in the middle of the V -shaped handlebar levers 136 and 138 each receive a ball joint whose ball joint is formed by the spherical end 158 or a respective bolt 162 or "164, which is mounted in the manner of FIG. 1 on an intermediate ring (not shown). not shown) other coupling half is constructed in a similar manner and articulated via V-shaped link at the other ends of the bolts 162, 164th

In the embodiment according to FIG. 10, which shows a section similar to FIG. 2, two pairs of bolts 168, 170 and 172, 174 are mounted on the intermediate ring 166. Each of these bolts is connected via a link 176, 178 and 180, 182 to the one coupling half 184 in the manner described.

A similar embodiment is shown in FIGS. 11 and 12.

In this embodiment, two pairs 254, 256 and 258 are mounted on opposite sides of the intermediate member 252, pivotally mounted by juxtaposed coupling members and one common, tangent to the intermediate member 252 pivot axis 262 and 264 · One end of each coupling member 254, 256, 258th , 260 is

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17. 9. 1980 56 940 Lö-g

2 1 8 6 6 i

each connected via a ball joint with a handlebar 266, 268, 270 and 272, which in turn is articulated via a further ball joint on the respectively adjacent (not shown) coupling half. The links 266, 268, 270 and 272 are arranged substantially tangentially, with the links 264, 256 of a pair connected to the links 266, 268 extending in opposite directions, respectively. The points of articulation of the links 266, 268, 270, 272 on the coupling links 254, 256, 258, 260 and on the coupling halves are in aligned alignment in a regular arrangement on a common cylinder 274 about these axes.

The two coupling members 254, 256 and 258, 260 of each pair are rigidly connected together. During the execution of _a n ch Fig. 11 and 12, the intermediate member 252 is a frame of rectangular shape. Koppelglied basic body 275, 278 having a substantially double-wedge shape extending along a pair of opposite side parts of the frame and sit on a respective shaft 284 and 286, which are mounted with their protruding ends in the other side parts 288, 290 of the frame. At the coupling element main bodies are on opposite sides pairs of aligned pins, z. B. 292j 294 are provided, which together form a coupling member 254 each. On the pins 292, 294 spherical thickenings are provided, which form the joint balls of the ball joints.

Figs. 13 and 14 show an arrangement similar to Figs. 1 and 2 are constructed. However, there are the ball joints completely replaced by rubber compounds. In the upper halves of Figures 11 and 12 an embodiment is shown,

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ι U ©

in which rubber molded body 186, 188 are vulcanized between the coupling halves 190 and a bolt 192 on sheet metal angle «The coupling half 190 has for this purpose a disc 194 perpendicular to the axis of rotation, which has a recess 196. With the disc are sheet metal angles 198, 200 screwed A sheet metal angle 202 of U-shaped cross-section is in front of the end face of the handlebar

192 screwed, wherein the lateral legs of the sheet metal angle 202 are arranged between the axially extending legs of the sheet metal brackets 198 and 200-. Between these legs 198 and 200, the gum body 186 and 188 are vulcanized.

In the lower half of Fig. 13 and 14, an Ausführungsforra is shown in which a vulcanization of the rubber body 204, 206 can be dispensed with. In this embodiment, the disc 194 is provided with an undercut recess 208 and bolts

193 carries a T-shaped extension 210 in front of its end face, so that the rubber body 204 and 206 are held form- = conclusive between these parts and thus the coupling intermediate ring on the T ~ shaped lugs 2.10 is held centrally.

FIG. 15 shows an embodiment in which, instead of an intermediate ring, a double-T-shaped intermediate piece 212 and a likewise double-T-shaped intermediate piece 214 arranged in a crossed manner are provided. Dedes of the intermediate pieces 212 and 214 carries a pair of coupling members pivotally mounted thereon 216, 218 or 220, 222, which are designed and act according to the type of FIG. 1. In this embodiment, the two shafts are connected to one another via two clutches connected in parallel,

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wherein the two clutches do not interfere with each other and also allows each a misalignment.

A similar embodiment is shown in FIG. 16. Here is a .Zwischenglied an outer ring 224, on which a pair of bolts 226 and 228 between inwardly projecting bearing eyelets 23O _1232, 234, 236 is pivotally mounted. The other intermediate member is - as in Fig. 2, an inner ring 238 on which a pair of bolts 240, 242 between outwardly projecting L _a geraugen 244, 246 and 248, 250 is pivotally mounted. The bolts 226, 228 and 240, 242 are angularly offset from each other in the rest position 90 °.

Also in the embodiments according to FIGS. 15 and 16, instead of a respective coupling element 216, 218, 220, 222 or 226, 228, 240, 242, the two can be provided, in an arrangement similar to FIG. 11.

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Claims (12)

17. 9β 1980 56 940 16! ♦ Shaft coupling comprising: a first and a second coupling half and a torque transmitting kinematics between the coupling halves, which permits an axial offset between the shafts, with an intermediate member whose axis is aligned with the shaft axes in aligned "shafts, and Coupling links, which produce a drive half and the intermediate member and between the intermediate member and the second coupling half, characterized in that (a) at least two coupling members (26; 36) with respect to the axis of the intermediate member (62) diametrically opposite each other and around tangentially Pivotal axes (64; 66) are pivotably mounted on the intermediate member (62), (b) the coupling members (26; 36) are articulated on all sides to the coupling halves (10; 14) and 17 17, 1980 56 940 16 1866 (c) balancing means (32; 34; 42; 44) for compensating the shortening associated with a pivoting of the coupling links (26; 36) the axial distance of the coupling element ends are provided. (1) a second pair of coupling links (220; 222; 240; 242) diametrically opposed to each other with respect to the axis of the second link (214; 238) and substantially opposite the first pair (216; 218; 226; 228) 90 ° angularly offset about tangentially extending Schvvenkachsen on the second intermediate member (214, 238) is mounted (Figures 15 and 16). - 21 - 17. 9. 1980 56 940 16 21866 1 ¹ ; ~ 56 940 16 their projecting ends are mounted in the other side parts (288; 290) of the frame, and (I) on the coupling member ~ basic bodies (276; 278) on opposite sides pairs of aligned pins (292; 294) are provided with spherical thickenings which form the latter joint balls of the ball joints « 2. shaft coupling according to item 1, characterized by, in that the coupling links (26; 36) are formed by straight connecting pins which have spherical thickenings (28; 30; 38; 40) at their ends and in that the spherical thickenings (28; 30; 38; 40) are accommodated in complementary receiving members (32; 34; 42; 44). 3. shaft coupling according to item 2, characterized in that on the coupling halves (10; 14) diametrically opposed radial eyes (18; 20; 22; 24) are provided and in that the receiving members (32; 34; 42; 44) are formed by rubber bodies which are seated in the radial eyes (18; 20; 22; 24), these rubber bodies being elastically deformable in the axial direction and serving as compensating means for shortening the axial distance of the coupling member ends (Fig. 1). 4. shaft coupling according to point 2, characterized by, - 18 - 17. 9. 1980 56 940 16 in that the compensation means for the shortening of the axial distance of the coupling element ends are formed by links (70, 98), which are articulated at one end to the coupling halves via ball joints, extend essentially tangentially to the coupling halves and at the other end in each case via a the ball-shaped thickening (72; 96) are hinged to the connecting pin (68; 94) (FIGS. 4 and 5). Shaft coupling according to claim 4, characterized in that the links (70) have at the ends a pair of eyes (76; 84) each receiving a rubber body (74; 82) with concave spherical inner surfaces, and in that in that one rubber body (74) receives the spherical thickening (72) of the connecting bolt (68) and in the other rubber body (82) a spherical end (80) of an axial bolt (78) seated on the coupling half (Figure 4). ... 6 «shaft coupling according to point 5, characterized in that between the rubber bodies (100) and the spherical thickening (96) or, the spherical end is provided in each case a sliding layer (104) (Fig. 4). 7. shaft coupling according to item 1, characterized in that (d) on opposite sides of the pontic, two pairs (254; 256; 258; 260) of side by side - 19 - 17. 9. 1980 56 940 16 -19- 218661 arranged coupling members are each pivotally mounted about a respective tangent to the intermediate member (252) extending pivot axis (262), (e) one end of each coupling link (254; 256; 258; 260) is connected via a ball joint to a link (266; 268; 270; 272) which in turn is articulated to the adjacent coupling half via a further ball joint, (f) the links (266; 268; 270; 272) are substantially tangentially disposed, the linkages (266; 268) connected to the coupling links (254; 256) of each pair extending in opposite directions, respectively (Figure 11). , 8. Shaft coupling according to item 7, characterized Sadunch that the two coupling members (254; 256) of each pair are rigidly connected together. 9. shaft coupling according to item 8, characterized in that (g) the intermediate member (252) is a frame of rectangular basic shape, (H) coupling member main body (276; 278) of substantially double-keyed shape extending along a pair of opposite side portions (280; 282) of the frame and each on a shaft (284; 286) sitting with - 20 - September 17, 1980 10 »shaft coupling according to item 1, characterized in that (J) between the two coupling halves a first and a second intermediate member (212; 214; 224; 238). is provided, (k) a first pair of coupling links (216; 218; 226; 228) are mounted diametrically opposite one another and about tangential pivot axes on the first link (212; 224) with respect to the axis of the first link (212; 224), 11. A shaft coupling according to item 10, characterized in that the second intermediate member (224) is a ring which surrounds the first intermediate member (238) and radially inwardly projecting bearing eyes (230; 232; 234; 236), in which the coupling members ( 226; 228) of the second pair are pivotally mounted with bearing pins (Fig. 16). 12. shaft coupling according to item 10, characterized in that the two intermediate members (212; 216) have double-T-shaped basic shape and are arranged crossing each other, wherein at the ends of each crossbar of the double-T's bearing eyes for supporting the coupling members (216; 218, 220, 222) are provided (Figure 15). Dazu_JZ.Seiten drawings