DE7021221U - INFLATION VALVE FOR TIRES. - Google Patents

Description

EicJielin & Cie. (Compagnle Generale des Etablissements Michelin)

Our reference: M

Inflation valve for "pneumatic tires

The invention relates to improvements in - Inflation valves for pneumatic tires and in particular on valves on the wheel rims for tubeless Tires are attached.

¹ O

In view of the space required by the braking system, it is necessary to place one on the rim attached valve, the space available is very limited. This requires the manufacture of Valves which require very little space in the radial direction, especially as a certain degree of freedom of movement must remain in order to avoid that the valves

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Per

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when putting on the one provided with the pneumatic tire
Damage to the wheel on the hub.

In a first known Ausfühi'ungsform the. ι space that the valve occupies in the radial direction,
reduced by the fact that the valve stub laterally
opens into the rim insert piece (valve base). This Aus \

management allows a reduction de 3 of the VEN \

til the space occupied in the radial direction to j less than 10 mm. However, it is in this · \

Execution necessary, the valve connector to the rim \

attach the insert, in particular by brazing, j

which is awkward, or the valve stutee after Her-!

position of the same together with the rim insert:

piece to pierce. This work is very difficult

to accomplish, since the hole on the nozzle con- \

must run centrally, which is why a considerable ' Proportion of manufactured valves for lack of sufficient

Concentricity is useless. :

In another known embodiment, the
Valve stub, which originally runs coaxially with the rim insert, and an extension of the same
forms, bent by 90 °. In order to facilitate this turning, there is an annular groove in the fig insert piece
provided that surrounds the approach of the valve connector .
Such an embodiment is more economical herzustel len, but has the drawback that in it the radial space requirement of the valve is at least 12.5 mm.

/ 3

The invention now relates to a valve with a curved valve stub which is economical to manufacture and has a small footprint.

The valve according to the invention has a curved stub that attaches to a rim insert with adjoins an arched edge surrounding the nozzle leaving an annular groove, namely The .Ventil is characterized by the fact that the high-O curved edge of the rim insertsβ a radial

Has recess into which the connecting piece is inserted, and that the annular groove is so deep that the wall thickness of the Rim insert piece at the bottom of the annular groove corresponds approximately to the greatest wall thickness of the curved socket.

An example embodiment of the invention: shows the drawing, namely:

Fig. 1 e * in section through a valve according to the invention tion in a plane that forms the axis of the rim

insert and the valve connector contains and

FIG. 2 is a section along line II / II in FIG. 1.

From Figs. 1 and 2 it can be seen that the valve from the rim insert 1 and the valve connector

consists.

The PeJLgeneinsa.LiSööack 1 has a cylindrical part 10 provided with a rait external thread, which is inserted through the valve hole 3 in the rim base 4 and receives a fastening nut. Furthermore, the inner rim insert 1 has a raised edge 11 which has a groove 12 for receiving a seal 15. Finally, there is a central hole in the rim insert.

The valve connector 2 is composed of a first curved part 20, an adjoining straight-line part 21 and an inclined part 22 which continues the straight-line part 21. The inclined part 22 has at its end an internal thread 23 for receiving the valve insert and an external thread 24 for receiving a closure cap. In the socket there is a channel 25 *. The socket 2 connects to the rim insert 1 at the bottom of a groove 15.

According to the invention , the arched hand 11 of the rim insert 1 has a radial recess 16 and the straight part 21 of the connecting piece partially protrudes into this recess, as can be seen in particular from FIG.

On the other hand , the annular groove 15 is so deep and wide that, taking into account the dimensions of the bore 14 and the hat 12, the mean wall thickness between the hat 1i> and the central bore 14 and / or the

Channel 25 is not significantly larger than the maximum Wall thickness of the nozzle 2. In this way it is possible, when the nozzle 2 is bent, to reduce the stresses which the metal is subject to, towards the greatest possible length in the rim assembly distribute. As a result, the connection piece 2 can be sufficiently connected despite its connection to the rim insert piece 1 "strong" bend so that the connecting piece is inserted into the radial recess 16 without the connecting piece 2 deforms inadmissibly at its roots or even breaks off.

In this case, the space requirement (distance S) of the yentile is at least about 2 mm, i.e. at the Depth P of the recess 16, reduced. One can still Save about 1 mm of space in that the wall thickness., In the outer zone of the straight part 21 of the Stub 2 is reduced by a flattening 26 shown in dashed lines in FIG.

Claims (1)

• - O • O r · r «« · «· if '·» ·
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• mf - » · ·· * · · · ■ · ■ t ; • , «Ft ·· ···· * ** - 702122110.9.70 Claim to protection ■ - ■ - A · .as valve for pneumatic tires with a curved Support that is attached to a ielgeneinsatsstück with one of the studs leaving an annular groove surrounding arched edge connects, thereby characterized in that the arched edge (11} des! Felgeneinsstü ^ ke-sOÖ) a radial recess - has mung (16) into which the nozzle (2) is inserted is, and that the annular groove (15) is so deep that the wall thickness of the skin insert on the floor the ring groove about the greatest wall thickness of the ge curved nozzle (2) corresponds. . ·