Device for attenuating road noise for a tire
A technology for tires and roads, applied in tire parts, tire tread/tread pattern, transportation and packaging, etc., can solve the problem of insufficient flexibility of blades
Active Publication Date: 2017-08-01
OCIETE DE TECH MICHELIN
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- Summary
- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
In this setup the blades fixed to the bottom extend up to the tread surface in a new state and there are the same production problems as those already described
Also, the other two blades are not flexible enough
Method used
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[0049] For the figures of this specification, the same reference numerals may be used to designate variants of the invention, wherein these reference numerals designate elements of the same kind, either structurally or functionally.
[0050] figure 1 A partial view of the surface of a tire tread 1 comprising three circumferentially oriented grooves 2 is shown. In order to reduce the noise associated with the resonance of the air in each groove 2 when passing through the contact portion with the road, a plurality of resonance noise reducing devices 5 are formed in each groove.
[0051] exist figure 2 , one of these means is shown in the closed state, that is to say in a position such that the cross-section of the groove is closed, in this case the cross-section of the groove being closed by the means over 90% of its area, In order to reduce the length of the gas-filled ducts which could start to resonate and at the same time prevent air circulation (circulation).
[0052] ...
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Abstract
The invention relates to a tire tread (1) having a tread surface (10) intended to come into contact with a road surface and comprising at least one groove (2) having a depth P and defined by two facing sidewalls (21, 22), said sidewalls being connected to one another by a bottom (20), at least one groove comprising a plurality of closure devices (5) to reduce the resonant noise generated by said groove during driving, each device (5) comprising at least two series of flexible strips, a first series (50) being connected to the bottom (20) of the groove and provided to bend about a first axis (XX') and at least a second series (51) connected to a sidewall defining the groove, said second series (51) being provided to bend about a second axis (YY'), said second axis being separate from the first axis, said tread being such that each second series (51) comprises at least two flexible strips (511) extending across at least half the width of the groove, the flexible strips of the first and second series having matching geometries suitable for mutually engaging with each other in order to close at least 70% of the cross-section of the groove.
Description
technical field [0001] The present invention relates to tire treads and more particularly to treads comprising grooves provided with closing means for reducing the noise generated by the air resonating in these grooves during rolling. Background technique [0002] Typically, a tire comprises a tread intended to come into contact with the road when the vehicle provided with the tire is driven. This tread is provided with a tread pattern formed by raised elements defining grooves for draining the accumulated water present on the road in rainy weather. However, the presence of grooves, especially circumferentially oriented grooves, is a source of rolling noise. [0003] definition : [0004] A block is a raised element formed on the tread, said element being delimited by voids or grooves and comprising sidewalls and a contact surface intended to contact the road. The contact surface has a geometric center defined as the centroid or center of gravity of said surface. [000...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60C11/13
CPCB60C11/13B60C11/1307B60C2011/1338B60C11/042B60C2011/1361B60C11/1353
Inventor G·罗蒂
Owner OCIETE DE TECH MICHELIN