DE1263532B - Pneumatic tires for vehicles, in particular motor vehicles - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY GERMAN WWW PATENT OFFICE

EDITORIAL

Int. CL:

Number:
File number:
Registration date:
Display day:

B60c

German KL: 63 e- 1/04

1263 532
S71143 11 / 63e
November 4th 1960
March 14, 1968

The invention relates to a pneumatic tire for vehicles, in particular motor vehicles, in the interior thereof one ring-shaped, designed as a solid body made of elastic material, and one for emergency operation Required height having support body is arranged ', which is facing the rim with its Areas is adapted to the inner surfaces of the tire beads or the circumferential surface of the rim and to these Inner surfaces and this circumferential surface rests.

In such tires, the support body must be held on the rim so that he in the case of his Utilization, e.g. B. when the air escapes from the tire, sits firmly on the wheel and the vehicle can roll over a certain distance on the support body.

In known tires of the type mentioned at the outset, the support body is connected to the rim by arranging a slot-shaped cavity running around the support body in which at a distance wedge-shaped, arranged from one another and projecting through the rim with a bolt end Fastening means are provided. By screwing nuts onto the ends of the bolts the support body is held on the rim. Because the cavity runs all around and the wedge-shaped fastening means are only arranged at a distance from each other, it is doubtful whether one is sufficient in an emergency tight fit of the support body can be achieved.

There is also a tire training of the type mentioned, in which the holder of the Support body is achieved on the rim by metal reinforcements of the support body, which consists of a band-shaped Holders exist, which has laterally protruding tabs that are against the inner edges of the barrel jacket. With this known training, too, there is a reliable stop in the event of an emergency against slipping of the support body is not necessarily given, since there is a bias between the support body and the tire beads are not present.

The invention is based on the object of designing a tire of the type mentioned at the outset in such a way that that in case of emergency a secure hold of the support body on the rim is guaranteed.

This object is achieved according to the invention in that the support body is arranged between the tire beads over the entire circumference under pretension, which is caused exclusively by elastic compression of the support body between the tire beads. In this way, there is a full contact between the surfaces of the support body facing the rim and the inner pneumatic tires for vehicles,
especially motor vehicles

Applicant:

SIS special factory for industrial acid protection

Thelen & Co.,

5204 Hangelar, airport

Named as inventor:

Fritz Schwerber, 5200 Siegburg;

Rudolf Czech, 5300 Bonn.

Another co-inventor has requested

not to be named

surfaces of the tire beads or the peripheral surface of the rim achieved. The preload makes it possible that the tire beads remain pressed against the rim horns, especially in an emergency, at which the air pressure in the tire has decreased. The tire remains firmly seated on the rim, and also the support body does not slip, so that the maneuverability of the vehicle despite the escape the air from the tire is retained.

In an embodiment of the invention, according to a further feature of the invention, on the one facing the rim an annular recess can be arranged on the inner peripheral surface of the support body, which is slightly convex in cross-section. This recess facilitates the assembly of the support body and increases the same when loaded, the side pressure on the tire beads, so that an improvement in the Hold of the support body is achieved. In addition, this recess serves to accommodate the over the rim protruding seal of a conventional valve. Is the annular support body, as is known per se, Surrounded by an air hose, according to a further idea of the invention, the air hose be slotted on its inner peripheral surface in the circumferential direction and along the edges of the Slit encircling edge parts serving as sealing lips. Furthermore, after the further Invention of the air hose and the support body in the area of the contact area of the tire adhering to one another be connected. This is advantageous because in interaction with the preload with the the support body is placed between the tire beads

809 518/168

is arranged, the compressed air is not given the opportunity to penetrate between the hose and the support body in the area of the rim horns. The air hose expands when it is inflated and, when the pressure is appropriate, lies against the inner wall of the tire. If the support body has a cellular structure in a manner known per se, then, according to the further invention, the support body can consist of a plastic based on polyurethane according to the diisocyanate polyaddition process. The support body then has good resilience and buffer properties, and its density can, if necessary, be less than 300 kg / m ³ . Despite the high elasticity of this material, the annular support body has a good supporting effect. This material can also be produced as a homogeneous, bubble-free mass of a rubber-like nature, the material being resistant to cold, aging and ozone, as well as being very durable, both in a homogeneous and in a cellular structure.

The invention is described below with reference to an embodiment shown in the drawing explained.

F i g. 1 shows a pneumatic tire mounted on a conventional rim with a support body according to the invention, wherein an air hose is additionally arranged;

2 shows the air hose surrounding the support body in cross section; in

F i g. 3 shows the support body according to the invention in cross section.

A conventional truck tire 1 is mounted on a conventional tapered shoulder rim 2. In the rim an angle valve 3 for supplying the compressed air is installed in the usual way, which is through a usual elastic seal 4 is sealed against the rim bore.

In the interior of the tire 1 is an annular support body 5 as a solid body made of elastic material arranged in a homogeneous or cellular structure. The annular support body sits on the rim 2 and has a height required for emergency operation. It can be surrounded by an air hose 6, which rests tightly on the support body when not inflated. When inflating, the reaches Air hose 6 the end position 7 shown in dashed lines and encloses the air cushion in the tire interior. The air hose 6 is not a closed hollow body, but points on its inner circumferential surface a slot 8 in the circumferential direction. In the lower area 9 is the hose with the support body 5 adhesively connected in the area of the plant of the tire 1. The protruding edge parts 10 of the air hose 6 serve as sealing lips and additionally prevent air from escaping between the rim 2 and tires 1.

The support body 5 is on its surfaces facing the rim 2, the inner surfaces of the tire beads or adapted to the peripheral surface of the rim. If a support body 5 is used without an air hose 6, so its contour in the lower part corresponds to the course of the inner surface of the tire, so that the support body fully fills the free space in this area under prestress. The support body is with in radial Directional bores 11 are provided, which are used to fill the tire or the tube with air to serve. Conventional stiffening wire rings 12 are also provided. At the rim 2 facing inner circumferential surface of the support body 5 is a ring-shaped, slightly convex in cross section formed recess 13 arranged, which to facilitate assembly and to increase the the side pressure exerted by the support body on the tire beads is used.

Before the tire 1 is mounted on the rim 2, the support body 5 is provided with or without an air hose 6 introduced into the tire interior. This is done in a simple manner by radial insertion, since the Support body made of elastic material can be easily compressed in width. Afterward the tire is mounted on the rim 2 together with the support body in the usual manner.

Claims (5)

Patent claims: 1. Pneumatic tires for vehicles, especially motor vehicles, in the interior of which an annular, designed as a solid body made of elastic material and one required for emergency operation . Lent height having support body is arranged, which with its surfaces facing the rim is adapted to the inner surfaces of the tire beads or the peripheral surface of the rim and to these Inner surfaces and this circumferential surface rests, characterized in that the support body (5) arranged between the tire beads on the entire circumference under pretension is made exclusively by elastic compression of the support body between the tire beads is caused. 2. Tire according to claim 1, characterized in that facing the rim (2) inner circumferential surface of the support body an annular recess (13) is arranged which is slightly convex in cross-section. 3. Tire according to claim 1 or 2, wherein the annular support body consists of an air tube is surrounded, characterized in that the air hose (6) on its inner peripheral surface is slotted in the circumferential direction and along the edges of the slot (8) circumferential than Has sealing lips serving edge parts (10). 4. Tire according to claim 3, characterized in that the air hose (6) and the support body (5) are adhesively connected to one another in the surface area of the system of the tire (1). 5. Tire according to one of claims 1 to 4, the supporting body of which has a cellular structure, thereby characterized in that the support body made of a plastic based on polyurethane according to the Diisocyanate polyaddition process consists. Documents considered: German Patent No. 223 132; German interpretative document No. 1 026 647; German utility model No. 1794 601; Austrian patent specification No. 160 282. 1 sheet of drawings 809 518/168 3.68 © Bundesdruckerei Berlin