HK1028271B - Preassembled bellow device for covering articulated shafts - Google Patents

Description

The present invention relates to an arrangement designed to coat a wave-like organ and/or a connection of two waves or a joint and a method for coating a joint wave in a bulgar shape.

In the automotive industry, in particular, the gear shafts, gear joints, etc. are covered with rubber sheaths, for example to protect the joints and prevent lubrication from escaping.

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This pre-assembled arrangement of the clamps or clamping or press rings, which are already closed, requires costly measures on the folding beam, so that the clamps or rings which are not shrunk or tensioned are kept loose on collar-like end sections, and furthermore, after loose assembly of the beams on the joint shafts to be covered, any defective clamps or rings can no longer be replaced.

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It is therefore the task of the present invention to propose a measure which will allow even loose pre-mounted clamps or clamping or press rings to be easily held on a beam and easily replaced or additional clamps or rings to be arranged, which will then preferably allow only a further processing step to secure and secure the beam.

The present invention is based on the solution of the problem by means of an order as stated in claim 1.

It is proposed that an arrangement designed to cover a wave-like organ and/or a connection of two waves or a joint shaft, having a bulgar element, each having at its end a collar-like section, largely ring-shaped, with an open clamp, press- or shrink-ring or so-called open tube clamp, which is or which is tensioned towards the centre in such a way that the ends of the ring or clamp band overlap each other and the ring or clamp is held firmly on the section.

Other preferred embodiments of the arrangement of the invention are characterized in the dependent claims.

A further proposal is to arrange a ball-like covering for a joint shaft or a gear joint, for example to protect the lubrication of a joint, whereby the ball-like covering is fitted at each end of a collar-like end with an open clamp, press or shrink ring or a hose clamp, which is forward-tended towards the centre, the ends of which are fitted with appropriate contours to form a joint or interlocking connection of the ends and which end overlap each other by the result of the forward-tending, so that at least one of the end knee-sections is then placed on a shaft or in the area of the shaft, the widest possible circular section being rounded or overlapping.a suspension designed to hold and align one of the ends of the ball-and-socket enclosure, whereby, when the ball-and-socket enclosure is overlaid, or when the ball-and-socket enclosure is suspended and extended, the clamping, pressing or shrinking rim or hose clamping is extended in such a way that the two ends of the ring or hose clamping are moved in the direction of the band extension, so that the fixed connection or interlocking connection of the two bands is formed by the provided contours, after which the ball-and-socket enclosure is strengthened in a narrower direction of the diameter to the nearest point of the connection between the lower end of the ring and the back end of the wave, by means of a pressing, shrinking or tensioning process.

Again, other preferred embodiments of the process of the invention are characterized by dependent claims.

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The great advantage of the method proposed in accordance with the invention is that the pre-tensioned shrink ring, press or tension ring chosen in accordance with the invention can be made smaller and more precisely formed and is therefore cheaper to manufacture.

The additional advantage is that the ring of the invention can be inserted from the side and placed exactly where it is to be placed, but this also allows a shrink ring or press ring to be placed at a specific location with the corresponding production or assembly data to be placed at that specific location.

The pressure ring can be viewed to see what information can be inserted on the pressure ring.

The invention is now explained in more detail below, by way of example and with reference to the accompanying figures.

The following are shown: Fig. 1 in perspective, facing an opening, a folding beam with an open tension ring at one end as proposed in the invention,Fig. 2a section from Fig. 1, representing the overlapping ends of the shrink ring from Fig. 1,Fig. 3 and 4possible configurations of tension rings, known from the state of the art for the example of the pre-assembled arrangement of the tension rings,Fig. 5the tension ring from Fig. 1 in the unassembled state,Fig. 6the folding beam in Fig. 1 in a variable state arranged on a wavy line in the direction of the spindle or spindle, respectively, 6Fig. 8 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9 or 9Fig. 9

Figure 1 shows, in perspective towards the larger ball, an arrangement according to the invention, showing a folding beam 10 with the individual ball sections 12. The folding beam 10 may be made of, for example, a rubber or a rubber mixture or of another suitable elastomer material, such as a suitable thermoplastic plastic. On the larger, collar-like end 14 shown in Figure 1 a clamping or pressing or shrinking ring 20 is placed. The two ends 22 and 24 are loose, overlapping, i.e. in other words the shrinking beam 20 is loose and can be removed at any time by the two ends of the ball 14 from the collar 10.In order to keep the shrinkage ring 20 automatically fixed on the end collar 14 of beam 10, it is, as already mentioned, pre-stretched towards the centre of the ring, and the collar 14 preferably has a final edge 16 and a second outstanding edge 18 which is cut against the first beam. The edge 16 and the edge 18 are preferably spaced so that the ring can be set with its width in between.The other end of the band 24 has a corresponding notch 25 in the front, so that when the band 20 is widened the band 23 can be grasped without loss in the corresponding notch 25. As can be seen in Fig. 2, the band 23 is placed outwards, which has the band 23 or the tongue 23.

The present invention is based on a method which has already been tried to solve at least part of the problem of holding an unshrunken press or clamping ring on the collar-like end of a folding ball. A possible solution is shown in Figure 3 by, for example, forming the band oval or elliptical in order to achieve a clamping effect against the collar surface.

Figure 4 shows another solution, whereby it is also conceivable that when the pre-assembly of the already closed clamping or shrinking ring is carried out, the bead is reduced in diameter by an inward-facing transformation of the bead, so that the already closed ring can be pulled up.

In addition, the approaches shown in Figures 3 and 4 always assume closed clamping or shrinkage rings, which is not always advantageous.

For this reason, it is proposed to use the shrink ring 20 shown in Figure 5 which is pre-stretched towards the centre and that, in the loose state, the two ends 22 and 24 overlap, creating a tensioning or clamping effect which keeps the shrink ring 20 self-supporting on the collared end 14 shown in Figure 1.

When the folding beam 10 is mounted with a pre-mounted shrink or press ring 20, such as a so-called multi crimp ring (MCR) on the metal counterpart or end of a shaft, the collar-like end 14 of the beam is extended. The MCR, which overlaps in the supply state with the two open bands, is also extended by this expansion process and the ends snap automatically on the same band, as can be clearly seen in Figure 6. The tongue 23 or tongue 23 snaps into the corresponding gap 25 in the band 24 and, due to the design of the tongue or tongue 23 with the bands in the forward sections, the two ends are intersected.

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For example, Figures 7 and 8 show possible versions of band-ends, whereas Figure 7 shows the ribbon leading from one end of 22 and the edge of 26 respectively with the aforementioned cross-strait leading sections 28.

Figure 8 shows another variant of a joint, whereby the middle end of the 22' band is placed in a 25' gap, and the tongue 23' is placed in a 25' gap.

The two band connections or band closures shown in Figures 7 and 8 are of course only examples and are intended merely to improve the understanding of the present invention.

Once the ball has been mounted on a wave end, as shown in Figures 6 and 6a, all that is required is to tighten or compress the press or shrink ring or the pre-mounted MCR. Again, as an example, Figure 9 shows such a device suitable for shrinking pre-mounted MCR. In this process, the pre-mounted closure of the shrink ring or the shrink ring is compressed so that it can no longer open or separate automatically. The device shown in Figure 9 has 40 simplified, inner ring-shaped pneumatic segments 41 which can be shrunk to a total of 42 or 43 hydraulically-pressed segments, or shrunk radially to a single hydraulically-pressed segment 41 or 41 in the direction of the shrink ring.

The present development thus includes open-ended, multi-crimped or multi-crimped (MCR) rings, which are known to be mechanically closed and can be manufactured with the appropriate pre-tensioning as they are produced with open ends.

This tension causes a spring action towards the centre of the ring. This spring action can be used to ensure that the ring, without any structural adjustment to the folding beam in the area of the end-clutch, adheres to itself in the correspondingly provided nut, for example, designed to accommodate MCR, as is known, since practically every type of folding beam is manufactured with the said nut. This nut can be formed continuously or even only as individual wedges, arranged on the ball-gum handle.

The variants or devices for the arrangement of folding beams shown in Figures 1 to 9 are of course only examples intended to explain the inventive idea or the mentioned assembly process. The design of the folding beam, in particular the material used for the folding beam, as well as the design of the clamping or shrinking rim or the so-called MCR and the material used for it, are of course variable in any way and the invention is not limited to any variant. It has been shown that, for example, the MCR is suitable for the manufacture of aluminium, but of course any other material, steel or stainless steel, can also be used.

Claims (10)

1. Arrangement, provided for covering the shaft-like member and/or an articulation-like connection of two shafts or of a steering gear, having a bellows-like element, the bellows-like element (10) having at each end a collar-like, substantially ring-shaped portion (14), on which there is arranged an open clamping, press or shrink ring (20) or a so-called open hose clamp, which ring or clamp is prestressed towards the centre in such a way that the two ends (22, 24) mutually overlap and the ring or clamp is automatically held firmly on the portion, characterised in that interlocking portions (23, 25) are provided in the two band ends of the clamp or ring, in order, upon expansion of the ring or clamp, to snap the ring band or clamping band into place in a closing, automatically interlocking manner.
2. Arrangement according to Claim 1, characterised in that at least one retaining portion (16) is provided on the collar-like portion (14), in order to hold the ring band or clamping band on the portion in the open, unmounted state.
3. Arrangement according to Claim 2, characterised in that the retaining portion is an end edge, or in that a groove-like portion is formed on the end collar, in order to hold the clamping or ring band therein in the preassembled state.
4. Arrangement according to one of Claims 1 to 3, characterised in that one end of the ring band or clamping band has at least one tongue or shackle (23) projecting in the band direction, with portions (28) projecting transversely thereto, and the other end of the ring band or clamping band has at least one notch or cutout (25) which corresponds at least approximately to the contour of the shackle or tongue, in order, upon mounting the bellows and expansion of the ring or clamp, to receive the shackle or tongue in such a way as to close the ring band or clamping band preferably in a loss-free manner.
5. Arrangement according to Claim 4, characterised in that the ring end or band end (22) having the tongue or shackle rests outwardly on the other, inner band end (24) having the notch when the clamp is loosely preassembled and open or the ring is open.
6. Arrangement according to one of Claims 1 to 5, characterised in that the collar-like end of the bellows is of roughened form on its inner side and/or has ribs or grooves, in order to rest on the shaft portion, optionally engaging in correspondingly formed grooves.
7. Arrangement according to one of Claims 1 to 6, characterised in that the clamping or shrink ring or the clamping band is a so-called multi-crimp ring.
8. Method for arranging a bellows-like covering of an articulated shaft or of a gear articulation, for example for protecting the lubrication of a shaft connection or of an articulation, the bellows-like covering (10) being provided at each end, on a collar-like end portion (14), with an open clamping, press or shrink ring or a hose clamp (20), characterised in that the ends (22, 24) of the ring are provided with corresponding contours (23, 25) in order to form an interlocking connection of the band ends and which band ends mutually overlap, in that at least one end collar portion is subsequently slipped on or put over a substantially circular supporting portion provided on the shaft (51) or in the region of the shaft end, which supporting portion is provided for arranging and holding one of the ends of the bellows-like covering (10), the clamping, press or shrink ring or the hose clamp (20) being expanded, when slipping on or putting over the collar-like end (14) and upon expansion thereof, in such a way that the two band ends (22, 24) of the ring are moved to such an extent in the band-expanding direction that the interlocking firm connection or the closure between the two band ends results, whereupon the ring or clamp is secured in the diameter-reducing direction on the collar-like end by means of a pressing or shrinking operation, in order to produce the firm connection between bellows and shaft or shaft end.
9. Method according to Claim 8, characterised in that the press or clamping or shrink ring or the hose clamp is prestressed towards the centre in such a way that the two ends mutually overlap in the loosely preassembled state.
10. Articulated shaft or half axle, in particular for use in motor vehicles, having at least one arrangement according to Claims 1 to 7.