DE2026826C - Elastic clamping ring that can be tensioned by radial forces - Google Patents

Description

The invention relates to an elastic clamping ring as a machine element, which can be tensioned by radial forces, z. B. to sealing, actuating, securing or Coupling purposes, in the form of a closed ring, the front end portions of which by radial Compression or expansion are elastically deformable and thereby b'Iden clamping surfaces.

For backup purposes there are z. B. the known radially slotted snap rings or closed ones Rings with radially protruding lobes or inclined sections, which are at clamp axial application radially with the respective insert part. For clamping purposes are also known multi-part ring sets that od over conical surfaces and an outer clamping nut. be braced with each other and with the respective insert part. For sealing purposes are special Gummiri: igkörper known with a z. B. on a housing supporting Grundabschnitf of Ring cross-section with an integrally formed sealing lip which, for. B. engages a shaft to be sealed. All these machine elements have the disadvantage that they can only be used for the purpose specifically intended are. or consist of several parts or only a relatively low clamping pressure raise.

The German utility model I 936 285 also has a clamping ring with the ones mentioned at the beginning Features known. This has the shape of a conical sleeve, the cross-section of which is radially inner until the radially outer section is the same. This sleeve wiril either by driving it into a Hole or by rubbing a tenon into the

3 ⁴

Height stretched radially. This makes it more difficult to open up - correspondingly large Q ^u ^ ^sc _f ^h . ^Nile

μοη on or in the intended insert part of the very reinforced internal structure

- strong and limits what is used accordingly. CrfinHnno will still

,! "" Discomfort a. In connection with the E ^ Jung * «rt>

The study was based on the task of drawing attention to the fact that '^ hu ^ edern

., mach built-up, can be tensioned by radial forces, which are g ςg «te in the Quewhnit ball

"This power of vision can only be achieved through the fact that the access points are exercised and

nwnelasticity of the material causing the elastic counterforce be, the deformation fj ^

Clamping ring of the type mentioned at the beginning to sound, approaching others, whereby ^dlL ^ gr ^ run. ^

,; .., on or in the intended insert. l was slightly bent with increasing ^ ¹³ ^ "! · ^} ^ _{/ was}

,,! Brinubar is tangible as the one explained above such f ^ch ^ ^nlt S _dunes .

l. _in mc clamping sleeve, so that it is possible through this. a certain similarity with the trn

,, ■ on the side of the clamping ring to a greater extent to the appropriate clamping ring because they are in the M UU.tu ι e

■ your purposes. E.g. to seal * -, Stell-, if reinforced, are from the point uη ^ forth as ro

hd Kpplunus / ^ corners to use. ₅ spring that bwnspni only by axial forces

for your purposes. E.g. to seal * -, Stell-, if reinforced by the ^

-, herunus- or coupling / ^ corners. to use, . ₅ spring, which bwnspni:, i, was only reused several times by axial forces. and others, are these woodruff keys, but with the •, "., it is to bring about a higher clamping pressure without the inventive clamping arm. u, r only radially

Danger that when applied on or in the not comparable. R "minnen-

■.-... saw insert / part will damage it. In continuing the invention J * ^r £ * ™ _ß

Ii ₁ solution to this task is shown by the clamping arm, o diameter on the reinforced nituKibschn. .1 ; The features mentioned in the invention are as small as dv, Rmg.nnänu..er at the η_ V:, ^ in the Öue "rsci.nitt one opposite the st.rn- its clamping surface inward ^ '™ _r ^ _kten ,,, en ., end portions of such reinforced central section the Rmgaußendurchmesscr on vt starM:, - i, n tt in that by wesenthch larger central portion is zweckmaß.gerwe.s Mc ^ ^ ^ .. s of ■■ 'iderstandsmomcnt in this area the end _{as the} largest Rmgaußdiameter a dem ™,> _initI e when clamping rocker around the central clamping surface to "outside ^ S" .fcnd.n E ^ b ". ! v.-hni "spring radially outwards or inwards. De- this case, the R> ng.nnen- ^ -J ^ ⁿ ^« ^ ,,!, "dung ^ emäße Klemmrmg thus consists of a bearing on ser means ^ n 'vortuina ci.i / i.en part whose annular cross-section in the middle or greater than the Kiemer gr "™ ζ ^ * ■ \:, - n middle portion having a diameter 30 ratio within ds Td.. Ranzbacn ^ • »VT ,, much larger radial resistance , before. those on the part, 7. B. on a white and on the ^ ugehor ^ an end face of one engages radially inward, z. B. Housing, not for system ^UI l ^d ™ £. ^z _c £ _nc , ^. mi, semer, nncnkante serves as a clamping surface, and on 35 on the shaft still on the housing D ^ e ^ ertindi n ^^, - another Sürnseüe 'reaches radially outwards, remäßc common K.ppb-v ^ mg dr ^ bc .the end _Ζ .Π. serves with its outer edge as a clamping surface. portions at Zusammend ucUn or ρ Ε- has been found that then during the radial together thus possible on both the Autbr.iigtn as AUC nu, ^fa ulrücken ^C of the one end portion of the other of the decrease in the K ^ mrmges un ^ ^ bhang xon the iMidabscbnitt - even if there are 40 separate parts to follow. The tr - ^ "ümfanesnchtung also self-contained ring section w, rd is therefore only about ^ ™ ^L ^^ sections - influenced like a rocker by means of a so that you. Bcabs.Lht. _T tc Mp ₁ the MUtebbschnitt taking place Can adjust tilting motion in motion .- _{find h; lbon} die

the entue-newly added: - radial direction pressed, in further improvement «ungdertrhnd ^ n ^^.

or is pressed together. As a result, these two ₄₅ hndabschn.tte a sth. G e.ch ^ ad. Uc

Clamping pressures can be generated in the process. cFiihnmns'irt of inventing heretofore in such 3pannelemen-.cn for un- kept In a preferred Ausfuhrungsart d ^ r ^ rnn nSlich. It is not necessary that the two end sections in the wc.sent "u ig d ^g ate the shaft or an interior finish left, ade side flanks where the cmc S, Un is specially prepared, e.g. grooves or the like. Flank of one end section Us cw s possible

5 * 6

an angle on the order of about 30 his from the following description of in the drawing

60 ', in particular about 40 to 50 °. Schematised execution example presented

The (protruding central spacing is more appropriate). Ils shows

from an approximately circular core cross section

formed, with the increased section modulus of 5 small rings in the vertical cross-section,

through the larger cross-sectional dimensions F i g. 2 in an enlarged view of the ring cross

and the cross-sectional shape compared to the two section according to Fig. 1,

End sections is reached. As part of the Hr- F i g. 3, 4 and 5 ring cross-sections of modified

finding it is also possible in or on the th types of execution,

reinforced middle section in per se known io Fig. 6 to H) in section each different one

There are still special reinforcements and / or misalignments with the respective insert pieces.

To train strengthening sections. The in F i g. 1 and 2 shown clamping ring 50

To perfect the invention, the end is self-contained and consists of a load-bearing Sections at their radially inwards or towards the middle section 1 with two diametrically outside each other facing clamping surfaces, 15 at an angle of approximately 47 to the axial direction 2 optionally with a bevel of the wedge tips, end sections 3, 4 extending obliquely therefrom preferably at an angle of about 45 ° to the axial direction, as the drawing shows, of one end direction Mistake. section engages radially inwards and the other

For certain clamping purposes, it may be sufficient to have the end section radially outward. The middle section I.

if the respective end sections from a row 20 is made up of a circular core cross-section S gcbil-

of cams distributed in the circumferential direction or the like det. The two adjoining end sectionsc

exist, with a wreath 3, 4 tapering towards their free edge evenly under the end section

such cam is understood. In the case of a preferably wedge-shaped, with a pointed win-

th embodiment of the invention are the end kel β of about 47 °. Due to the wedge shape they have

However, sections in the circumferential direction each also as both end sections 3, 4, straight side flanks 6, 1

self-contained ring sections. or 8, 9. Dalx-t is one side flank 6 de

The inventive clamping ring has numerous one end portion 3 except for z. B. 3 ⁿ parallel 71

advantageous uses. It can be used, for example, as the diametrically opposite side flank 9 de

Holders of a sealing collar are used. In the other end section 4. Lies in the same way

In particular, it is possible here to connect it to one another on the front 30 side flanks 7 and 8. You can

seen insert, z. B. the sealing sleeve, in the dimensions and elasticities depending on the

to be molded in one piece in a manner known per se. For the intended purpose of use, be selected so that

Use as a replaceable roller, e.g. B. for the innermost and outermost Seitenfiankc, z. H

Printing machines and sheet feeders, a running 6 and 9, the two end sections 3, 4 in the open>

ring on the outwardly reaching end portion 35 tensioned state of the Klemmringcs as possible cW

applied, e.g. B. be vulcanized, which run parallel to the axial direction 2,

a considerable simplification compared to the As the drawing shows, the krcisförmi;

known designs with collar and adjusting screw results. Core cross-section 5 of the central section 1 in radi.

For an application of the invention as a sealing direction much larger than the cross sections d is at least one of the two end sections 40 end sections 3, 4. Depending on the size selected, a radial section is formed as an axially clamping core cross section 5 and the end section 3, barer sealing section . So that the clamping can the section modulus of the middle section ring as a coupling and simultaneous sealing between in the radial direction is much larger, z. B. delete two pipes are used, at least several times greater than that of the Em ^; a tube rotatable and longitudinally displaceable held 45 sections 3, 4 are made. As a result, d <is and due to the possible extremely high end sections 3, 4 can be relatively rough when compressed od clamping pressure, without spreading rocker-like in the direction of arrow 10 to dt that the seal is too poor. supporting middle section 1 ″ movable. In execution ¹

Another advantageous application is the section modulus of the ti.

is used as a labyrinth seal, where the middle section 1 is defined by the size d

to at least two such clamping rings - a core cross-section 5 made so large that the ti

inside and one outside - are clamped or clamped, lowing middle section 1 - when applying ν

the one clamping ring z. B. on a shaft and the forces within the intended force range

Adjacent clamping ring in the surrounding - from the one when squeezing or spreading

Casing. 55 of the end sections 3, 4 around the middle section 1 c

The clamping ring according to the invention can be z. B. following common tilting movement in Pfeilrici

as an injection-molded plastic part, e.g. B. made of polyamide, production 10 remains essentially unaffected. Success

run. Depending on the desired elasticity, the ring inner diameter is 11 a?

Type of plastic and dimensions chosen. supporting middle section 1 larger than the kleinsi

But it is also possible to use the clamping ring made of steel, 60 inner ring diameter 12 on the inside gre

z. B. resilient collet chuck steel to produce, including end section 3. Furthermore, the ring outside

with enormous, up to now not thought possible diameter 13 on the supporting middle section 1 kle

Clamping pressures can be generated. Less than the largest ring outside diameter of 14 ζ is sufficient

E.g. if the end section to be clamped over the outwardly reaching end section4. Outside

the opposite end section by ^s / mo mm 65 dem is the ring inner diameter 11 or di

is grafted to it on a wave od. dpi. Circumferential diameter 13 at the supporting center

Slide 7u according to the tolerance. section 1 larger or smaller than the largest bzi

Further details of the invention result from the smallest diameter 15 or 16 within the ToI

r; in / bereieiics of a provided liinsat / part 17; irt is shown, in which the clamping ring 50 on a

or 18. The clamping ring lies; it is in one piece in the clamped DiehtmiinscheUe 25 '.

/ 'iist-nd via its lindah section 3 or 4 at the point of use according to FIG. 7 serves eggs memorial

liinsat / .teil 17 or 18, while the load-bearing diingsgemäße clamping ring 50 as a setting and securing

Central section 1 remains lifted. So that the 5 ring to a gear 27 on a shaft 26 to

See the desired tilting movement in the direction of the arrow 1 (1.

When using according to FIG. With the inner part 17 spreads. In order to achieve a mirror image of the same force io end section 3, the clamping ring sits on a shaft cautiously, the two have Ξηά- 26 and serves as a roller z. B. in an arc section 3, 4 an approximately identical radial abutment. In this case, a plurality of such clamping rings, which are provided with a static torque and, for this purpose, in the embodiment as a raceway 28, can have approximately the same cross-sectional shape. be arranged next to each other, all with gc-The entire ring cross-section is easily interchangeable with tools suitable at an angle of 15,
inclined axis lying to the axial direction 2 and to the embodiment according to FIG. forms as a sealing section, which is

The end sections 3, 4 are at their radially ao nut 30 axially against the end face 31 of a pipe

inside or outside facing inside or 32 can be tensioned. With the inner end section 3 is

The outer edge at 19 and 20 is angular. Clamped to a thinner tube 33. The

For this purpose, the wedge points are at an angle γ clamping ring 50 as a coupling between the two

folded from about 45 "to the axial direction 2. With tubes 32, 33, the two tubes facing each other.

the sharp edges 19, 20 are produced by the clamping 25, which can be rotated and axially displaced. As a result

ring has a high sealing effect. with the clamping ring according to the invention

! n Fig. 3 is a modified version of the extremely high clamping pressure, the upper

illustrated, the middle section 1 of which with an inner surface of the tube 33 can be relatively rough without

Reinforcement 21 or with an external reinforcement that the seal is below an acceptable level

section 22 is provided. The rest of the construction is bad in the 30th.

The principle is the same as in FIGS. 1 and 2. In FIG. 10, two such clamping rings 50,

In the embodiment according to FIG. 4, the end 50α a labyrinth seal is formed in that one of the sections 3, 4 is not inclined, but rather the clamping ring 50 is clamped on a shaft 26. in the axial direction 2 and have to attack while the other clamping ring 50a is clamped in a housing 34 which is raised around the inside or outside, respectively, giving a raised radial housing.
section 23 or 24. The middle section 1 receives To apply the clamp according to the invention, its higher radial section modulus alone rings can, for. B. a lathe chuck or special by means of a radially outwardly protruding reinforcing tongs are used, provided that these are suitable for applying correspondingly high pressures. It is on

The embodiment according to FIG. 5 shows a grain 40 attacked that end section which is the combination of features according to FIGS. In the uses according to Fig. 6 inclined, while the middle section 1 to 9 and the clamping ring 50 in Fig. 10 this is a higher radial moment of resistance solely through the outer end section, while on the one hand a radially outwardly protruding reinforcement 15 tension the clamping ring 50a in Fig . K) the inner section 22 is obtained, the outer diameter 13 of which the end section is expanded,
but as in Fig. 1 and 2 is less than the largest. In the context of the invention, of course, outside diameter 14 of the outwardly reaching various ring cross-sectional shapes, dimensions of end section 4 and reinforcements are possible in order to achieve the desired tilting

In the application according to FIG. 6 is used to move the one end section around the supporting one

proper clamping ring 50 to achieve a Dichtman middle section when on the other

clamp 25 on a shaft 26. In the end section radially from the inside or from the outside

upper half of FIG. 6 pressure is applied to the sealing sleeves. The type of execution according to

25 and the clamping ring 50 separate parts, while F t g. 1 and 2 are characterized by a special one

in the lower half of FIG. 6 a simple form and versatility of use.

1 sheet of drawings

Claims (14)

Patent claims: .. Elastic clamping ring that can be tensioned by radial forces as a machine element, e.g. ü. to sealing. Adjusting, securing or coupling purposes, in the form of a closed ring, the front end sections of which can be elastically deformed by radial compression or expansion and thus form a clamping surface, characterized in that the ring has a cross section opposite the front end sections (3, 4) such a reinforced middle! feathers. 2. Clamping ring according to claim 1, characterized in that that the ring mini uri diameter (11) on the reinforced .Middle section (1) is larger than the smallest ring inner diameter (12) on the With its clamping surface inwardly reaching end section (3). 3. Clamping ring according to claim 1 or 2, there- »5 marked by the fact that the outer diameter of the ring (13) on the reinforced middle, section (I) smaller is than the largest ring outside diameter (14) on the end section (4) which extends outside with its clamping surface. 3a 4. Clamping ring according to one of claims 1 to 3, characterized in that the two end sections (3, 4) have approximately the same radial moment of resistance and preferably have approximately the same cross-sectional shape. 5. Clamping ring according to one of claims 1 to 4, characterized in that the two end sections (3, 4) are essentially straight side flanks (6. 7, 8, 9), one side flank (6 or 7) of one end section (3) in each case as parallel as possible to the diametrically opposite side flank (9 or 8) of the other End portion (4) is, preferably such that the innermost and outermost side flanks of the both find sections (3, 4) in the open state, if possible approximately parallel to the axial direction (2) run. 6. Clamping ring according to one of claims 1 to 5, characterized in that the two end sections (3,4) from the middle section (1) taper towards their free panel. 7. Clamping ring according to claim 6, characterized in that the bcitien end sections (3, 4) taper uniformly in cross-section approximately wedge-shaped, preferably with a Point angle (/ <) on the order of about 30 to 60, in particular about 40 to 50 '. and that the ring cross-section runs obliquely to the axial direction (2), preferably at an angle (<< ■) in the order of about 3 (1 to 60 ', in particular about 40 to 50. H. Klenin.Miig according to one of claims 1 to 7, characterized in that in or on the reinforced central section (1) in per se known Way still special reinforcements (21) and '"■ ler reinforcing sections (22) are formed. ', K clamping ring according to one of claims 1 to S. that the Endahschnitte (3, 4) formed on its radially outwardly facing in.ien or Spannrlächen (at 19 or 20) edged, where appropriate, with a bevel Wedge tips are preferably provided at an angle (v) of about 45 ^: to the axial direction (2;). K). Clamping ring according to one of Claims 1 to 9, characterized in that the end sections (3, 4) in the circumferential direction as well m are closed ring sections. 11. Clamping ring according to one of claims 1 to 10, characterized "in that it is attached to the provided spare part. e.g. a sealing collar (25 '), in one piece in a known manner is molded with. 12. "Clamping ring according to one of claims 1 to 11, characterized by the application as exchangeable roller, including a race (28) on the outwardly reaching end section (4) upset. E.g. it is vulcanized (Fig. 8). L3. Clamping ring according to one of claims 1 to 12, characterized by the application as Seal, including a radial section (29) formed on at least one of the two end sections (3, 4) is as an axially clampable sealing section (Fig. 9). 14. Clamping ring according to one of claims I to 13, characterized by the application as Labyrinth seal, including at least two such clamping ring (50, "50a) - one (50) inside and one (50 «) outside - are open or clamped (Fig. K)).