DE2130262A1 - Arrangement of a tire and a wheel - Google Patents

Description

Arrangement of a tire and a wheel

The invention relates to an arrangement of a tire and a wheel.

In the event of a partial or total loss of air from a tire fitted on a wheel while driving a Vehicle, opposing surfaces within the interior of the tire and wheel assembly come into contact with one another under greater or lesser stress depending on whether the air loss is complete or not. The areas of the tire's inner surfaces that come into contact are those close to that, however areas radially outside of the rim flange and the inner surface of the tire close, however radially inside the tread edge.

-1- 109853/1251

Dr. Meier-ler * Dr. MmHz Dr. DmM · 0φΛ * § · HMtarwaM Dlpl.-Ing. Ortmkow

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When the surfaces come into contact, heat builds up in the rubber and textile components of the tire and very rapid structural damage ensues. It was found according to the invention that the larger Source of the generated heat caused by the relative movement of the surfaces in contact and under load and that the temperature rise due to the high coefficient of friction of dry rubber or rubber on dry Rubber is particularly distinctive.

According to the invention an arrangement of a pneumatic tire and a wheel is provided, a tire, a wheel and a perforatable member forming part of the wheel or tire and from an injector is penetrable for delivering an internal lubricant to the interior of the assembly of tires and wheel, whereby the inner surfaces of the tire are lubricated.

According to the invention is also a method for lubricating the inner surfaces of an assembly of a tire and a wheel is provided wherein an inner inflatable chamber of the tire and wheel assembly is provided with an injector for supplying lubricant is connected, wherein the injector is pressurized to the To transfer lubricant from it to the inner chamber.

The injection device for supplying lubricant may be a pressure vessel, for example of the aerosol type or a mechanical pump for generating the transfer pressure. The container or the pump can with a tubular extension can be provided which has a sharpened tip and an opening in the side of the tube for delivering lubricant to the interior of a tire. Alternatively, the container or the pump

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with a connection for the valve to inject a liquid lubricant through the valve to be able to.

The lubricant is preferably a flowable liquid lubricant of the type described in British patent applications 30033/70 (German patent application, our reference number: D 1248) and 8592/71 (German patent application * our reference number: D 1248), although solid-state lubricants such as graphite or talc are also used if desired could have been.

The lubricant can pass through the soap valve as above is explained, by a perforable or penetrable member which is provided for this purpose in the tire or the wheel rim, or even through the side wall of the Of the tire, if it is not desired to repair the tire, can be injected.

The perforable member in the tire of the wheel rim can for example be a stopper made of rubber or plastic material, if desired again after perforation seals or may remain visibly perforated to indicate that lubricant has been injected has been. If desired, the lubricant injector may be capable of placing an identification mark in the hole pierceable member or the tire sidewall to indicate that it has been used, for example an elongated colored plug.

If desired, especially if the perforatable Member is located in the wheel rim, this should normally be protected by a removable cap to prevent that it is accidentally riddled with holes. *) of the applicant of the same age

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When using the wheel and tire assembly with a deflated or airless tire, it is desirable that the Tire beads are not removed from their seating surfaces. As a result, the wheel rim is preferably a flat bed rim, i.e. a rim without a recess or a drop center, in which or which the tire beads can fall. Alternatively or in addition, WuIst-restraint facilities can be used be provided on the wheel rim in order to ensure that at least the laterally outer bead does not come from its seat Will get removed. The Knowledge Restraint Institutions may include any suitable means such as a bead spacer ring, removable bolts or pins or other protrusions on the wheel rim.

The tire preferably has a relatively low aspect ratio, for example between 30 and 75 % and preferably between 55 and 70%, in order to reduce the difference between its running height when it is inflated and when it is deflated. In a preferred embodiment, the tire has a tread width that is greater than the width of the tire sequence between the horns.

The lubricant injected into the tire and wheel assembly serves to cover the inner surfaces of the tire and the amount of heat that is released when the tire loses air or is airless or has a substantial negative pressure, due to relative friction between these surfaces during the Driving the vehicle on which the wheel and tire assembly is mounted is generated. This can driven the vehicle to a garage or elsewhere without the need for changing wheels on the road and the particular advantage is that it is not

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it is necessary to take an Eeserver wheel with you in the vehicle.

By penetrating the assembly of tire and wheel can causes permanent breakdown of the tire and wheel which serves to prevent re-inflation of the tire and wheel assembly for further inflated operation thereby preventing reuse of a tire that has already been damaged by running without air.

The invention is applicable to tire and wheel assemblies in which the tire is removed from the rim v / ground, or alternatively if the tire cannot be removed therefrom, i.e. if the two are permanent Form an arrangement, for example when the rim is bent over the wheel beads after the tire and rim have been assembled or is forged.

The invention is in connection with the subject of the application of the British patent applications 30029/70 (German patent application, * our Az: D 1249), 30030/70 (German patent application, * our Az: D 1253) and 3OO3I / 7O (German patent application, * our Az: D 1259) can be used.

The invention is illustrated below with reference to the drawing, for example described; in this shows:

Fig. 1 in section a hand-operated injector for lubricant,

Fig. 2 shows in section a pressure-actuated injector, Fig. 3 shows in section an injector of the aerosol type and

Fig. 4- in section a part of a wheel rim with a through pierceable link in it.

*) of the applicant from the same day

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According to Fig. 1, a hand-operated injector for lubricant in the form of a mechanical pump 1. The pump 1 comprises a cylinder liner or a tube 2 with a piston 3 therein, which is attached to a plunger or a piston rod 4-, which extends through a seal 5 at one end the cylinder liner extends. The opposite end of the sleeve is closed except for a tube 6 that extends from the Sleeve 2 extends. The tube 6 has a sharpened closed one End 7 and an opening 8 in its side. An adequate seal between the piston 3 and the Sleeve 2 is ensured by O-rings 9 on the piston.

In operation, the pump is filled with a flowable liquid lubricant, the pointed end of the tube through the puncturable member in the tire or rim, if one is provided, or alternatively through the tire sidewall pierced. The tube 6 is inserted sufficiently far into the interior of the tire to ensure that the opening 8 is inside the tire and operates the pump to inject lubricant into the tire.

In the alternative embodiment shown in FIG. 2, the cylinder liner 2 or the tube 2 contains a piston 3> however, the piston rod is omitted and replaced by a bearing 12 for a frame 10 for a pressure cylinder 11. A pressure relief pin 13 on the bearing 12 can pierce the pressure vessel if the frame 10 is fixed for the latter is screwed into the storage 12. The opposite end of the bushing is also equipped with a connection part 14-for a tire valve instead of a pointed tube Mistake.

BATH ORIGINAL

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In operation, the pipe 2 is in this case with a flowable liquid lubricant filled and the pre-binding part 14 is attached to the valve of the tire. The frame 10 for the printing cylinder 11 is fixed against the storage 12 screwed and the cylinder pierced by the pin 1J and opened to the can 2. The pressure in the liner behind the piston 3 then pushes the piston along the liner and the lubricant gets into the tire through the tire valve printed.

In the embodiment shown in FIG. 3, there is an aerosol container 15 »containing the lubricant with a release valve 16 provided, which merges into a metal tube 17 that is pointed and closed at its free end 18 and has an opening 19 in its side.

This facility is related in a similar manner to that with the exception that the lubricant is pressed through the tube 17 by the Relaxation valve 16 is opened instead of a piston rod to operate.

In Fig. 4, a pierceable member 20 is shown, the in a suitable opening in a wheel rim 21 in a snug fit is used on the outer rim flange 22. The member 20 includes a mushroom head 23 which is within the tire / wheel assembly is arranged, and a stem part 24 which has a passage 25 which through a rubber membrane 26 to is locked to its inner end.

In use, a pointed tube 27 attached to a suitable Lubricant injector is attached along the Passage 25 inserted and pushed through the membrane 26, so άε _;> the lubricant injected into the tire / wheel assembly can be.

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BATH ORIGINAL

A protective plug can be provided for the link 20, to protect the membrane 26 in normal operation).

- patent claims -

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Claims (1)

claims !. Arrangement of a pneumatic tire and an ead with a Hoop and an ead, characterized by a pierceable member that forms part of the Eeifens or Eades forms and from an injector for introducing an internal lubricant to the interior of the assembly of tires and wheel penetrable so that the inner surfaces of the tire are lubricated thereby. Arrangement according to claim 1, characterized in that the one containing the lubricant Injection device a pressure vessel or a mechanical pump to generate the for the transmission of the Lubricant to the inner surfaces of the assembly or required pressure and that the container / pump comprises a tubular extension with a sharpened Tip and an opening in the side of the ear for conveying the lubricant to the interior of the tire. 3. Arrangement according to claim 1 or 2, characterized in that the perforatable member is a plug is made of rubber or plastic material. 4. Arrangement according to claim 3, characterized in that that the plug has a head portion located in the assembly and a protruding stem portion, which includes a passage that provides access to a perforatable membrane. 109853/1251 5- arrangement according to claim 4, characterized in that the perforatable or perforatable Membrane made of the same material as the remaining part of the plug is. 6. Arrangement according to one of the preceding claims, characterized gelcennz eichnet that the perforatable Link is provided in the Eadfelge adjacent to the outer Vulstsitz of the rim. 7 · Arrangement according to claim 3> characterized in that the perforatable member is visible remains perforated after the lubricant is injected. 8. Arrangement according to one of the preceding claims, characterized in that the perforatable Limb is normally protected by a removable cap or plug. 9 · Arrangement according to one of the preceding claims, characterized characterized in that the Eadfelge is a rim without a recess or a drop center, into which the tire bead can fall. 10. Arrangement according to one of the preceding claims, characterized in that bead-Eüekhalte-devices are provided on the Eadfelge, which ensure that at least the laterally outer bead is not removed from its seat. 11. Arrangement according to one of the preceding claims, characterized in that the tire has an aspect ratio or cross-section ratio between 30% and 75 % . - 10 -109853/1 25 1 Λϊ .. Arrangement according to one of the preceding claims, characterized C ο indicates that the tire has a tread width which is greater than the width of the wheel rim between the horns. 13. Method of lubricating the inner surface of an assembly from help and had, characterized that the inner inflatable chamber of the assembly of tires and had iait an injection device for Supplying a lubricant is connected that the injection device is pressurized for transferring of lubricant from this to the inner chamber. 14-, case according to claim 13, characterized in that that the injection device comprises a pressure vessel. 15 · "Method according to claim 13 _}, characterized in that the injection device has a mechanical pump for generating the transmission pressure. 16.Verfahren according to any one of claims 13 to 15 »thereby g e code It is shown that the lubricant is conveyed to the interior of the heater through a pipe that is closed Has end and an opening in its side. 17 · The method according to claim 16, characterized in that the lubricant is perforated by a Member is injected into the tire for this purpose or the wheel rim is provided. 18. The method according to claim 16 or 17, characterized in that the lubricant injector is suitable is to return an egg identification mark after injection - 11 - 109853/1251 BATH ORIGINAL allow and thereby indicate that it has been used is. 19 · Method according to one of Claims 1 *> "to 18, thereby gefcenaaei c h n e t that the lubricant is a flowable lubricating liquid. - 12 - 109853/1251 "■ $ 4 . Blank page