DE2405141A1 - VEHICLE WHEEL WITH LOW BED RIM - Google Patents

Description

Kronprinz Aktiengesellschaft, 565 Solingen-Ohligs, Weyerstraße 112-114

"Vehicle wheel with drop center rim ¹¹

The invention relates to a vehicle wheel with a drop center rim, the drop center with a removable cover is provided.

The vehicle wheels are to facilitate the assembly of the tire with a Provided deep bed in which a tire bead is placed to prevent pulling over to enable the protruding rim flange. After the tire is mounted, the drop center is no longer needed unless the tire is removed should be I.

As long as the tire was driven with the prescribed air pressure in normal operation there is no danger from the low bed. If the air pressure drops sharply, you can however, the tire beads detach from the shoulders and migrate into the drop center and then slide partially or completely over a rim flange. This will the steerability of the vehicle is seriously endangered.

The known covers of the drop center of a vehicle wheel (DT-PS 1 148 897, DT-OS 2 321 345) have been approved for use when operating with tubeless Wheels are not suitable or are too cumbersome and expensive due to screwing.

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The object of the invention is to provide the known drop center rims of the vehicle wheels to convert to safety wheels with just a few simple measures who have the option of moving the tire beads into the drop center " Avoid excessive air pressure loss and the associated dangers. Further After the further task, the necessary for the mass balancing are required Weights can be accommodated in the drop center using the drop center cover can.

To solve the problem. Serve those specified in the claims. characteristics . ·

If a spring-loaded plastic or rubber ring is used, it can be easily removed and just as easily reinserted into the drop center. An elastic material is used for this ring, so that the cover ring is first hung with one part in the deep bed, as when changing tires, and then the remaining part z. B. is pushed with a tire lever over the adjacent rim flange. If automotive material is used to fasten the plastic or rubber ring in the drop center, the old ring is cut through with a suitable tool when the tire is changed and removed, and a new ring is inserted.

If a plastic or rubber ring is attached, it is advantageous to use an elastic hose used, which has deposits distributed over the circumference that do not or now little can be pressed in, such as wire springs.

According to a further embodiment of the invention, the tube can be airtight and provided with a vent so that it can be inflated onto the wheel rim after it has been inserted into the drop center of a vehicle wheel and the tire feet have been moved. The tube can be inflated so far that it essentially protrudes ₅ mm above the rim base. In this way it can advantageously be completely prevented that "in the event of a loss of air pressure in the tire - the adjacent tire foot, ie the tire foot from the side of the short rim shoulder to the center of the rim.

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The assembly of the tire is made easier by the fact that the valve of the tube inserted in the low bed on the side of the long rim shoulder is arranged. Here, the tube can be lowered into the ground before the tire is fitted be inserted. When installing the tire beads, the tube is then jowoils partially pushed on the side on which the valve is attached.

The valve for the hose that is placed in the drop center is preferred by 180 ° compared to the Radventi! offset and arranged approximately in the same wheel plane. This reduces the static and dynamic imbalance. When inserting this hose, care is taken by adding suitable inserts to ensure that that the air can flow in and out of the tire unhindered through the wheel valve can. To better distinguish the aforementioned hose valve from Radventi! the hose valve can be marked with a special mark, e.g. provided with a color marking. -

According to another invention proposal that solves the same problem, there is Cover from several ring parts or ring segments or from several parts?! - rings / i By dividing a plastic or rubber ring into several TeH rings can gu: nmse! astic rings be used in the relaxed state have a smaller diameter than the drop center, so that these rings can be introduced into the drop center of a rim with little effort.

If the rim is divided into two or more ring segments, one of the several segments can consist of weights necessary for mass balancing. For this one proceeds in the following way during the assembly: First the tire ai.'f the animal working rim of a vehicle wheel is fitted and inflated with air so far that the beads sit firmly on the rim shoulders. Then the size and position of the counterweights for the wheel is determined. Then the air pressure is released from the tire and the tire bead of the short rim shoulder is pushed onto the side of the long rim shoulder. Now the assembly of the cover of the deep bed takes place, whereby the counterweights are placed in the intended places. The tire is then fully assembled.

The invention is illustrated in the drawings with the aid of embodiments Sf; which is explained in more detail below:

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From the figures show:

Fig. 1 and 2 schematically with a cross section through a drop center rim a cover ring,

3 to 5 partially show a cover ring from the side,

6 and 7 schematically a drop center rim with a tube,

8 and 9 schematically a drop center rim with a profile ring or a specially used cover,

10 and 11 schematically with a cross section and a side view a subdivided cover ring,

12 schematically shows a cross section through a drop center rim

a FaIt-s chi too.

In the drop center rim 1 (Fig. 1), the cover ring 3 is in the drop center 2 under spring tension used. A cover ring that is open at one point can be used here. To increase the spring force, spring steel inserts 4 (Fig. 1 and 5) inserted into the cover ring 3 from the outside. To assemble a cover ring, both reefing beads 22, 23 are required after the tire has been assembled, as in FIG. 1 shown, pushed to the side of the long rim shoulder and held there for the duration of the ring assembly.

It can also be a profiled ring 5 (Fig. 2) used, cer itself with the inner Profilteii 6 is supported on the low bed 2. You can use the cover ring 3, 5 Fasten adhesive to the flanks 7 of the low bed 2.

A cover ring 9 can have a recess 8 (Fig. 3) on its outer circumference, In which a counterweight can advantageously be used for mass balancing. An open ring 10 (Fig. 4) made of plastic or rubber can thereby after insertion into the deep bed 2 at the ends 11, 12 are clamped that these ends are hook-shaped or dovetail-shaped and after tightening the cover ring 10, a clamp 13 is used, which with corresponding Ends 14, 15 provided "et. This clamp 13 is preferably made of metal! With a variable weight, which is used for mass balancing. For A clamp 13 can be used to simplify this measure, which is used for receiving a weight for mass balancing geeictnete recess 16 has.

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This recess can also be arranged on the inside of the clamp 13. When balancing the mass with the arrangement of an additional weight at the point opposite the point of greatest imbalance, the above specified method of attaching a weight in conjunction with a cover ring 3, 5, 9, 10 can be used. The reverse method of mass balancing can be opened with a cover ring 17 at the ends 18, 19 (FIG. 5) in advantageous use by placing between the ends 18, 19 such a large Space is left free, such as the weight appropriate to the detected imbalance is equivalent to. To increase the missing weight, the ends 18, 19 of the ring 17 can be cut off in the required length in a simple manner, with in front of the Ring-ended markings about the size of the weight of the sections, e.g. 5 gr or 10 gr, can be attached.

An inflatable tube 20 (Fig. Q) can be used to cover the deep bed 2, through its valve 21 the air for inflating the hose after assembly ■ -des Tire is let in. The advantage here is that the hose 20 before Tire assembly can be applied to the rim 1. When installing the tire beads 22, 23 is the hose 20. in the manner shown in dashed lines to the side pushed. Another advantage of using an inflatable tube is that the tube 20 is inflated so much in the form shown can be "that it protrudes further than, for example, the so-called hump certainly prevents the tire feet 22, 23 from losing air in the tire Roll over the middle of the rim, rather each tire foot will open stay on his side.

According to a preferred embodiment (FIG. 12), the one used in the deep bed 2 consists Cover made of a tube 38 which is provided with folds on both sides. This folded tube 38 prevents even in the deflated state that in the event of a loss of air pressure in the tire, the tire feet 22, 23 can get into the drop center 2. When the folded tube 38 is inflated with the associated valve 39, it assumes the shape 40 shown in dashed lines in cross section and is guaranteed in addition to the effect that the tire feet 22, 23 cannot wander into the low bed 2, certain noti on properties.

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A hose 25 (FIG. 7) can also be used to cover the deep bed 2 that is not inflatable. This tube 25 is shown in FIG. 1 after the tire has been fitted and the tire bead 23 has been moved onto the long rim shoulder assembled. The hose 25 is provided with elastic inserts 24 which reinforce the surface of the hose against indentation, but an assembly over the rim flange 26 enable.

According to FIG. 8, a one-piece rubber ring 27 is used to cover the deep bed 2. In this case, the ring 27 is profiled preferably M-shaped in cross section on the side facing the deep bed, the rubber ring 27 with its sides 27 a, b on the flanks 7 of the low bed 2 and with its central part 27 c on the base of the low bed is supported.

Referring to Fig. 9, a drop center rim 28 is used, e.g. Part of the flanks 7 of the deep bed 2 expressions 28 a, b has received. Thereby are undercut edges 28 c, d emerged, which make it possible to create an open cover ring 29 to be pinched. This cover ring 29 can consist of metal or plastic tape. Here, although the production of the undercut edges 28 c, d somewhat expensive, but this is compensated for by the use of a simple cut tape for the cover ring 29.

According to a preferred embodiment of the invention (FIG. 10), the cover of the deep bed 2 consists of several ring parts or partial rings 30, 31, 32, 33, which are each distributed over the circumference and are supported by a spring ring 34 inserted into a groove from the outside can be held. The partial rings 30 to 33 can be connected to one another in that they are glued to one another or secured against displacement in the circumferential direction by an axially extending, for example glued-in pin 35 (FIG. 11). In this embodiment, according to a known balancing process, two equal weights 36, 37, each corresponding to the detected unbalance, can easily be accommodated in each 60 from the opposite side of the wheel to the unbalance point, so that, for example, the ring ends of the partial rings 31 and 32 one so have a large distance from one another, so that the counterweights, which are preferably designed like clamps (Fig. 4, Item 13), are arranged offset from one another by 120 on the required studs. With a subdivision of the cover of the deep bed 2 in

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Segments, which are preferably held in place on the drop center with a spring ring 34 one or two segments made of metal, depending on the balancing method (Steel, lead or the like) be designed as a counterweight. The counterweights can also be glued to the ends of the segments or partial rings and / or to the deep bed flanks.

When using a spring ring 34, which is in an outside on the segments is inserted circumferentially, a clamping according to Fig. 4 is not required. For the open spring ring 34 rounded and so strongly pre-tensioned steel wire is used used so that the segments do not stand out from the low bed 2 even with the maximum number of tours allowed.

If a split cover ring for the drop base of a vehicle wheel is to be applied, which become trapped under spring bias into the low bed soil, the ends of the cover ring always have a distance from each other, so that the ring constantly festsitzl. This distance can also cause an imbalance if mass balancing is not carried out at the same time as the insertion of a split cover ring. An essential feature of the invention is therefore that the covering of the drop center of a drop center rim is advantageously combined with the mass balancing and the attachment of the counterweights.

- patent claims -

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Claims (21)

2405U1 KPZ 378 PATENT CLAIMS 1. j vehicle wheel with drop center rim, the drop center with a detachable cover is provided characterized, that the cover is made of a plastic «or rubber ring or a hose consists. 2. Vehicle wheel according to claim 1, characterized in that an open plastic ring with spring preload is inserted into the drop center of a rim. 3. Vehicle wheel according to claims 1 or 2, characterized in that a open plastic or rubber ring is provided with spring steel inserts. 4. Vehicle wheel according to claims 1 to 3, characterized in that the Plastic ring is connected to the deep bed or its flanks by adhesive. 5. Vehicle wheel according to one of the preceding claims, c & characterized by that the plastic «or rubber ring over some parts of the circumference or over the entire circumference is provided with a profile. 6. Vehicle wheel according to claim 5, characterized in that the profiling Support elements are formed with which the plastic «or rubber ring in the Deep bed base and is supported on the deep bed flanks. 7. Vehicle wheel according to one of the preceding claims, characterized in that that the plastic «or rubber ring is made from a band and the ends are clamped together. 8. Vehicle wheel according to claim 1, characterized in that the in the drop center the hose used is inflatable with an outwardly directed valve » 509833/0412 2405H1 9. Vehicle wheel according to claim 1, characterized in that the valve on the Side of the long rim shoulder is arranged. 10. Vehicle wheel according to claims 8 and 9, characterized in that the valve for the hose by 180 ° opposite
is arranged in the same wheel plane. Valve for the hose offset by 180 compared to the wheel valve and approximately 11. Vehicle wheel according to claim 1, 8 oder9, characterized in that the Hose is provided with reinforcement inserts. 12. Vehicle wheel according to claims 1, 9 and 1, characterized in that the plastic or rubber ring or the tube protrudes over the rim well to about the height of a so-called hump. 13. Fahrz-eugrad according to claims 1 and 8, characterized in that the After inflation, the tube protrudes at least 5 mm above the rim base. 14. Vehicle wheel according to claims 1 and 8, characterized in that the in the tube used in the deep bed has folds on the sides. 15. Vehicle wheel with drop center rim, the drop center with a detachable cover is provided, characterized in that the cover consists of several ring parts or part of wrestling. 16. Vehicle wheel according to claim 15, characterized in that the ring parts with one another are connected. 17. Vehicle wheel according to claim 15 or 16, characterized in that one or several segments or ring parts required for the mass balancing Weights exist. 18. Vehicle wheel according to claim 17, characterized in that a counterweight is glued to the ends of a plastic or rubber ring. 5 0 9 8 3 3/0412 2405Ui 19. Vehicle wheel according to claim 17, characterized in that a counterweight is glued to the deep bed or the deep bed flanks. 20. Vehicle wheel according to claim 17, characterized in that a counterweight is held with inserted magnets on the deep bed flanks. 21. Vehicle wheel according to one of the preceding claims, characterized in that that the balance weight read bracket is formed and the accordingly clamp-like formed ends of an open plastic or rubber ring connects to each other. Patent attorney 509833/041 2