WO2005063504A1

WO2005063504A1 - A wheel and a wheel rim

Info

Publication number: WO2005063504A1
Application number: PCT/BR2004/000034
Authority: WO
Inventors: Cláudio CORTE
Original assignee: Arvinmeritor Do Brasil Sistemas Automotivos Ltda.
Priority date: 2003-03-18
Filing date: 2004-03-18
Publication date: 2005-07-14
Also published as: BR0300700A

Abstract

The invention relates to a wheel, particularly for use on vehicles, comprising a substantially cylindrical rim (3) and a substantially circular disc (2) concentric with the rim (3), the rim (3) having at least one annular recess (320) having at least one main wall (323), and a longitudinal axis (110), the wheel (1) comprising a main wall (323) which has a direction defined by a fourth straight line (52), the fourth straight line (52) and the longitudinal axis (110) defining a substantially acute angle (α). The invention also relates to a wheel rim (3), particularly for use on vehicles, having an identical configuration and an angle (α) between the direction defined by the main wall (323) of the annular recess (320) and the longitudinal axis (110).

Description

A WHEEL AND A WHEEL RIM"

The present invention-τelates^~tera- wheel comprising a disc and a rim, particularly for use on vehicles, wherein the wheel provides a novel positioning of the tire-calibrating valve with respect to the ventilation window through which the valve projects, eliminating the making of a tear in the border of this window. The invention further relates to a wheel rim used on the wheel in question. Description of the Prior Art Conventional wheels used on vehicles comprise a rim and a disc soldered to each other, the disc being internal and coaxial with the rim, which are preferably made of stamped steel. The wheel disc is provided with a central region where one arranges the fixing bores for fixing the wheel screws and the fitting bore for fitting the axle tip (if any), an intermediate region where one locates the ventilation windows and the spokes intercalated be- tween each other, and an external region that promotes contact with the rim. At the periphery of this external region, there is a border perpendicular to the plane defined by the disc; this border is associated to the rim. On the other hand, the wheel rim is provided with two external regions having flanges at their ends and an intermediate region. The rim further defines an internal sur- face facing the longitudinal axle of the rim and an external surface facing the tire. The association between the disc and the rim takes place upon contact between said border located at the periphery of the wheel disc and the external region of the rim, on the. internal surface, close to one of its flanges. At a determined place of the intermediate region of the rim, the tire-calibrating valve is positioned, as a rule in the region that comprises an annular recess. In this embodiment of the wheel, in order for the valve to project through one of the ventilation windows of the disc, so that one can calibrate the tire, it is necessary to make a tear in part of the border of said ventilation window, close to the external region of the disc. In this way, in order to produce this wheel, there is a step of-mak- ing such a tear during the process of manufacturing the disc. This additional step has drawbacks, such as raising the unit cost of manufacturing this

.^'- ^"In order to eliminate the above-cited drawbacks, the present ap- plicant has already developed a. wheel, disclosed in patent application PI 0003716-8, which comprises the same rim of the prior art, wherein the valve bore is made in the internal surface thereof, in a position different from that ^" usual position in the prior art.. In this way, it is not necessary to make a tear in the border of one of the ventilation windows for the valve to be accessible through said window. „. ,_: - . , .--. ,, - . ^,- . - , , . _; . _; Also with a view to eliminate the making of a tear in the border of one of the ventilation windows, the present invention proposes an effective novel and inventive solution. The valve bore is made in the internal surface of the rim in a position equivalent to the conventional position on the wheels of _. the prior art, but the shape of the wheel rim is modified, so that the valve will project from inside rim i such a way, that, it will be accessible through one of the ventilation windows jvwjt out the need to make a tear in its border. The valve tip is closer to the center of the wheel disc, facilitating calibration of the tire. ;.^"; . Objectives of the Invention The present invention has the objective of providing a wheel, particularly for use on vehicles, preferably made of stamped steel, comprising a rim and a disc, the rim having such a configuration that the tire-calibrating valve will be fixed to it in the conventional position. However this valve pro- jects through one of the ventilation windows of the wheel disc, without the need to make a tear in the border of said window or to use special valves, which brings about improvements to the balancing of this wheel, beside eliminating the step of manufacturing it, thus reducing the production costs. In addition, this arrangement imparts to the wheel a more uniform and sym- metrical esthetic aspect, maintaining the ease of access to the tire-calibrating valve. Another objective of the present invention is to provide a rim for

least one annular recess having at least one main wall, and a longitudinal axis, the main wall being in a direction defined by a fourth straight line, the Toϋrth straight line and the longitudinal axis definirig-a substanfially acute an- - gle.

10 Also, the objectives of the present invention are achieved by

J; - means of a wheel, particularly for usepri ehicles, cpmpri ing_.ai§UbstantialIy cylindrical rim and a substantially circular disc concentric with Ihe rim, - the disc comprising at least one external region whereby it is associated to the wheel rim and having at least two ventilation windows, each

i i i d i l cated in the external region of the disc, the point corresponding to the point of the border substantially farthest from the center of the disc;

20 -the rim comprising at least one annular recess having at least one first wall and at least one main wall, and a longitudinal axis, the first wall defining a direction concurrent with the longitudinal axis; and - the first wall comprising at least one valve through-bore for associating a valve having a first end fixed to the valve bore and a second end,

25 free and opposite to the first one; - the wheel presenting a distance between the free end of the valve and the border of the ventilation window at the point of the border substantially farthest from the center of the disc; and the external region defining an area with the region of the border of each of the windows, the value of the

30 area of the external region of the point of the border substantially farthest from its center being equal for all of said at least two windows. Further, the objectives of the present invention are achieved by

J5_ tudinal xis defining a substantially_acute _.angle, __ The wheel of the invention has many advantages in comparison with the wheels of the prior art, some of which are reported^" below: ^{~ ""} _.. , • _ since there is no need to make a tear in the border of one of theNehti- lation windows of the wheel disc, the production of this novel wheel i^'θ -^' -- ■-^' comprises at least one less manufacturing step,, which reduces; the manufacture costs; • without the presence of a tear in the border of one of the veϊitilatiori windows, the intrinsic balancing of this wheel configuration is greater in comparison with the balancing of the wheels from the prior art. This

15 -. Js so. because of .the, uniformity and symmetry of the novel wheel, - : WhicH- irnparts greater balance of masses and,, therefore, increases, the balancing; and • the ventilation windows are homogeneous, which imparts to the wheel a symmetric and balanced appearance, providing a greater esthetic 0 appeal and increasing the potential of sales on the market. Brief Description of the Drawings The present invention will now be described in greater detail with reference to an embodiment represented in the drawings. The figures show: - Figure 1 is a perspective part view of the wheel of the prior art; 5 - Figure 2 is a partial front view of the wheel of the prior art; - Figure 3 is schematic partial cross-section view of the wheel illustrated in figures 1 and 2; - Figure 4 is a schematic cross-section view of figure 3 in detail;; ^" - Figure 5 is a perspective partial view of the wheel of the present 0 invention; - Figure 6 is a partial front view of the present invention; - Figure 7 is a schematic partial cross-section view of the wheel illustrated in ϊigϋres 5 and 6; ^{' " ■} - -^.zⁱr-x- •^Figure -8 is a schematic cross-section view of figure 7 in detail;_: - Figure 9 is a cross-section side view of the wheel illustrated in figures 5 to 8; and - Figure 10 is an overlappjrjgj.n_detai between figures 4 and 8.

Detailed Description of the Figures According to a preferred embodiment and as can be seen in figure 5, the present invention relates to a wheel ϊ articularly for use on vehicles, which comprises a disc 2 and a rim 3, the disc 2 being substantially cir- cular in shape, and a rim 3 being preferably substantially cylindrical in_^shape., The disc 2 is internal and coaxial with the rim 3, and is associated to it. The wheel 1 is preferably made of stamped steel. This description is also valid for the wheels of the prior art 100, which are illustrated in figures 1 to 4, the rims of which are represented by 3', and the discs are represented by 2', for rea-

art and the wheel 1 of the present invention, the valve 4 is positioned at a specific point of the rim 3', 3, which will be defined later, so that the tire (not shown) can be calibrated. The valve 4 is substantially cylindrical in shape, having a first end 40 fixed to the rim 3', 3 (in a valve bore 3211 , which will be mentioned later) and a second end 41 , which, is free and;opposite the first end. The disc 2' of the wheel of the prior art and the disc 2 of the present invention comprise an -external region 21 whereby it is associated to the rim 3', 3, an intermediate region 22, where the ventilation windows 221 and the spokes 222 are located, the ventilation windows 221 and the spokes 222 being intercalated with each other, and a central region 23, where the fixation bores for fixing the screws 231 to secure the wheel to the vehicle and the fitting bore for fitting the axle tip 232 (if any) are located. The number of these bores 231 may preferably vary from three to six bores 231. On the other hand, the bore for fixing the axle tip 232 may exist or not. Obviously, the discs 2', 2 are preferably a single piece, and so the above-defined regions as isolated elements are only imaginary.

periphery, concurrent with the plane of the disc 2', 2 and facing the inside of the wheel 1. One should consider ^_^alternatives _of_djscs__2', 2, where the border faces the inside of the wheel 1 ,with the border 211 being parallel to the plane of the disc 2 or still any other arrangement. The intermediate region 22 may have a varied number of ventilation windows 221 and spokes 222, and the latter may still have different shapes. The ventilation windows 221 are.preferably:sμbstant .ajly triangular in shape, and may have other shapes (circular, trapezoidal, among others), as long as there is room sufficient for the tire-calibrating valve 4 to project between one of them. The spokes are preferably-substantialiy rectangular in shape, and may have other shapes that should harmonize with the chosen shape of ventilation window 221. The number of ventilation, windows 221 too may vary. The minimum number of ventilation windows 221 is of one window 221 , so that the tire-calibrating valve 4 can project through it. Obviously, the number of spokes 222 varies according to the number of ventilation windows 221 which one wishes to make in this disc 2. Moreover, the ventilation win- dows 221 and the spokes 222 may further be asymmetric in shape and/or in arrangement. .-^:- ~. ^■;-^{, '} ; ^' - ^: - ^::'< ■= ^{' ■'}■ _. ^' ■ • - ■^{• "} Each ventilation window 221 is delimited by a border 2211 , which surrounds it throughout its e rten and accpMήts fo efining the shape of said ventilation window 221. The borders 2211 of all the ventilation windows 221 of the disc 2 of the wheel according to the present invention- are preferably identical. χ ^' On the wheel of the prior art 100 (figures 1 to 4 ), one of the ventilation windows 221 compulsoriiy comprises a tear 223, for the valve 4 to be accessible. This tear 223 is preferably made substantially at the point of the border 221 farthest from the center of the disc 2' or at a point adjacent to the latter, shown as point P in the figures. The point P and the adjacent points are located in the external region 21 of the dis 2', as can be seen in figures .1 and 2. n the ventilation window-221 , .whieh;Sørjfains the tear 223, it is÷ evident that the^~area defined by the external region 21 and the border 2211 is smaller, since a part of it does not exist any longer due to the tear. In the wheels 100 of the prior art and in the wheel 1 of the pre- sent application, the external region 21 and the borders 221 of the windows define respective areas. ^{~" "~ "}_^""■ ^' _. The point P and the adjacent points being Jthbse points of the border 2211 farthest from the center of the disc 21 , it follows that in the -wheels 100 of the prior art the value of the area (A) define -byJhe;extemal region 21 of the disc 2' and the points of the border 2211 farthest from its center is equal for all the windows 211 , except in that region of the border relating to the window 211 that contains the tear 2233, where this area is smaller (A'). _., The tear 223 is necessary, because there _:is no _min|mum distance between the valve 4 and the border 22.11 , that isjo say,:=i this ear did - not exist this valve 4 could not be positioned without resting against the disc 2'. It should be noted that the tear 223 only exists in the discs 2' of the wheels, of the prior art 100, since one of the objectives of the invention is ex- actly to eliminate it, due to the characteristics the will be described later. The tear 223 made in the border of one of the- ventilation win^ dows 221 of the disc 2' of the wheels of the prior art 100 for the vaive 4 to project in order to calibrate the tire corresponds to an opening in the border of said window 221 , preferably semicircula or arch-shaped, -with fhe cohcav- ity facing the center of the disc 2. It should be noted that the shape of the tear 223 may vary, as long as it enables one to place and position the valve 4. Since the disc 2 of the wheel 1 according to the present invention does not have the tear 223 in any ventilation window, it follows that, consider- ing the point P and the adjacent points, those points of the border 2211 substantially farthest from the center of the disc 2' (as was described with regard to the point P for the disc 2' of the wheels of the prior art 100), in the case of the wheel 1 of the present invention the value of the area (A) defined by the external region 2f^~d the^disc 2 and the points of the border 2211.-farthest from its center is always equal for all the windows 211 , without exception. The definitions made for the rim 3 hereinafter refer to the figures 3 and 4 of the wheel of the prior art 100 and to the figures 7 _and_8 of the wheel 1 of the present invention, since in this way it is easier to describe them. Obviously, all the definitions contained in this description apply to any segment of the rim, be it the rim 3' of the prior art or the rim 3 of the present- invention. Whatever the rim 3', 3 (preferably cylinder, as _^already mentioned), it comprises a first and a second external regions 31 and 31 ' and an⁷ intermediate region 32 located therebetween and provided with an annular recess hereinafter called bed 320. The rim 3', 3 further defines an internal surface 300 facing its inside and an external surface 301 facing the tire. Just as defined fprthe disc 2', 2, these regions, when isolated elements, are also only intermediate sections, since the rim 3', 3 is preferably constituted by single piece. The rim 3', 3 has a longitudinal axis 110, which corresponds to a straight line perpendicular to the plane defined by the disc 2 and goes through its central point, as can be seen in figure 9. The first and the second external regions 31 and 31' are located at the end portions of the rim 3 and comprise ends that define first and second flanges 33 and 33', respectively. The flanges 33 and 33' are substantially J-shaped, but they may have different shapes that function, that is to say, they should enable one to position and fix the tire to the rim 3 correctly, beside allowing one to place balancing weights. The disc 2 is associated to the rim 3 in the first external region 31. The bed 320, which, as already mentioned, has a first wall 321 and a second wall 322 defining directions concurrent with the direction of the longitudinal axis 100 of the rim 3, joined to each other by a main wall 323. The first wall 321 preferably corresponds to a substantially straight stretch and preferably projects from the first external region 31 , com- prising at least one valve bore 3211 , the longitudinal axis of which goes through one of-the-yenti|atiorj windows 221. Alternatively, the first wall 321 may project from any point of Ihe intermediate region 32. The valve bore 321 may have a varied size, as long as a com- mon valve 4 (already described before) may be positioned in it and projects through one of the ventilation windows 221. The second wall 322, preferably corresponds to a substantially straight stretch, .faces the second external region 31' and projects froi a. point of the intermediate region 32. In another embodiment, it is also possible for the second wall 322 to project from the second external region 31 '. The location of the first and second walls 321 and 322 varies, since the bed 320 may be positioned at any place of the intermediate region 32 and, besides; it may have different shapes and sizes, provided that it constitutes an annular recess formed by the first wall 321 , second wall 322 and main wall 323... - , _. . The main wall 323 preferably corresponds to a straight stretch, is preferably concurrent with the first and the second walls 321 and 322, or with only one of them, and defines the smaller diameter of the rim 3, that is to say, the point of the. rim 3 closest to its longitudinal axis 110 (already defined be_: fore) is located on it. Alternatively, the first wall 321 , the second wall 322 and the main wall 323 may have other shapes than a rectilinear stretch, provided that they constitute an annular recess corresponding to the bed 320, already defined. In the case of the wheels of the prior art 100, as illustrated in fig- ures 1 to 4, the main wall 323 compulsoriiy corresponds to a .rectilinear stretch parallel to the longitudinal axis 100 of the rim 3. The main wall 323 of the wheel 1 of the present invention, in turn, does not compulsoriiy configure a rectilinear stretch parallel to the longitudinal axis 110 of the rim 3, but rather concurrent with the latter, as will be explained later. In the wheels of the prior art 100, one may define the first straight line 51 ' as being a straight line parallel to the longitudinal axis 110 of the rim

3' of the prior art (already defined) and that passes through two end points of the flanges 33 and 33' aligned and located on the external surface 301 (the end points define the.maximum diameter of the rim 3'.); and a second straight line 52', which defines the direction of the main wall 323. In the same cross- section of the rim 3', the longitudinal axis 110, the first straight line 51' and 5 the second straight line 52' are coplanar. These straight lines are represented in figure 3. One can see that in the wheels 100 of the prior art (see figure 3), -;_. - the first and second straight lines 51' and 52' are parallel, since the main wall 323 is compulsoriiy parallel to the longitudinal axis 110 of the rim 31 '. 0 On the wheel 1 of the present invention (as can be seen in figure 7), one may define a third straight line 51 analogous to the first straight line 51 ' of the wheel of the prior art, as being a straight line parallel to the longitudinal axis 110 of the rim 3 according to the present invention and that passes by the end points of the flanges 33 and 33' located on the external surface [5 ^301 .(analogous to the respective points represented on the wheel of the prior art 100), and a fourth straight line 52, which defines the direction of the main wall 323. The longitudinal axis 110 of the rim 3, the third straight line 51 and the fourth straight line 52 are coplanar. However, one can see that, in the wheel 1 of the present inven-0 tion (see figure 7), the third and the fourth straight lines 51 and 52 are concurrent. Therefore, the fourth straight line 52 and, by inference, the main wall 323, is concurrent with the longitudinal axis 110 of the rim 3. As can be seen in figures 7 to 10, as a consequence of the crossing of the third and the fourth straight lines 51 and 52, two angles are5 defined. The acute angle defined by the straight lines 51 and 52 is called α and represents the focus of the present invention. It should be pointed out that the first straight line 51 ' and the third straight line 51 have been defined so as to facilitate the understanding of the present invention, as well as the illustration of the crossing of the straight0 lines that define the α angle, which is the essence of the invention. However, it is known that two straight lines are sufficient to define a plane and define an angle, if they are concurrent. Therefore, the α angle may be defined, in the present invention, as being an angle formed at the point of crossing of the fourth straight line 52 that represents the direction_qf the main wall 323 with the longitudinal axis 110 Of the rim 3, since both are coplanar. These two straight lines are sufficient for both defining a plane and forming the α angle. Preferably, the value of is higher than 0 (zero) (corresponding to the rim of the prior art) and lower than 25 degrees, but it is evident that this maximum value may vary up to the limit of 90 degrees. The presence of the α angle is due to the new conformation of the rim 3 of the present invention. The main wall 323 has a different shape in comparison with the shape of the corresponding^" wall of the rims 31 ; of the wheel^'s ^'of the prior art. As can be seen in figure 10, the second straight line 52' of the wheels of the prior art and the fourth straight line 52 of the wheel 1 accόrding-to the present invention are concurrent and, therefore, the main wall 323 of the wheel 1 according to the present invention is inclined with re- specLtpJhe..lpngitudinal axis 110 of the rim 3. One can then iotice that the first end 400 of the main wall 323, whereby the latter is joined to the second wall 322, remains positioned substantially at the same place as in the wheel 100 of the prior art. On the other hand, a second end 401 of the main wall 323 pf ^'the- rim 3 of the present invention, adjacent to the first wall 321 , is lo- cated closer to its longitudinal axis 110 in comparison with the corresponding end of the main wall of the rim 3' of the wheels 100 of the prior art. The main wall 323 of the rim 3 according to the present invention may alternatively be concurrent with the first wall 321 and the second wall 322 or have, in addition, the same direction of the second wall 322, as if this were a substantially rectilinear stretch. As stated before, both the first wall 321 and the second wall 322 or the main wall 323 may has other shapes than a substantially rectilinear stretch, provided that they constitute an annular recess corresponding to the bed 320 already defined. With the inclination of the first wall 323, the first wall 321 has now a longer length, so that the valve borer 3211 may be positioned closer to the longitudinal axis 110 of the rim 3. In this way, there is no need to make the tear 223 in the disc. In the wheels 1 of the present invention there is a distance called "d"', due to the inclination of the main, wall 323, which corresponds to the distance between the free end 41 of the valve 4 and the border 2211 of the ventilation window 221 , so that it is not necessary to make the tear 223 for ac- commodating the valve 4. The present invention may also be applied to other types of wheel 1 made from stamped steei; wheels that correspond to a disc 2 with a diameter equal to that of the rim 3 or even larger than one of its ends (known as "full-face" integrated wheels), light-alloy wheels or of any other type. The wheel 1 may has any configuration, as long as the longitudinal axis^" of the valve bore 3211 projects through one of the ventilation windows 221 of the disc 2, and that the rim 3 comprises a bad 302 constituted by a main wall 323, the direction of which is concurrent with the longitudinal axis 110 of the rim 3, that it, it should define an α angle. The disc 2 and the rim 3 disclosed now are preferably made from stamped steel, but other materials may be used. The rim 3 is preferably conformed by lamination, but one may consider other processes for conforming it, such as bending, among others. The association of the disc 2 of the rim 3 is preferably effected by soldering between the border 211 and the external region 31 , preferably in four symmetric equidistant contact regions. The soldering may be carried out throughout the extent of contact between the rim 3 and the disc 2, or any other form, as long as it is functional. Other forms of association are screwing, riveting, fitting, gluing, or any other, since this is not a piece of informa- tion determinant of the scope of this invention. Whatever the form of association between the periphery of the disc 2 and the rim 3, it may be carried out at any point of the internal surface 3, as long as the longitudinal axis of the valve bore 3211 projects through one of the ventilation windows 221 of the disc 2. With the present invention, that is to say, with the novel conformation of the rim 3 due to the inclination of the main wall 323, the valve 4 is accessible through one of the ventilation windows 221 , without the need to make a tear 223 in the border of said window 221. In this way, the wheel 1 presents a better intrinsic balancing, beside eliminating a step of its manufacture, thus reducing the production cost and presenting a more interesting esthetic aspect, thanks to the symmetry between the ventilation windows 221 , provided by the absence of the tear 223 in the border of one of the windows 221 in the disc 2, a tear 223 that is present in the prior art. A preferred embodiment having been described, one should understand that the scope _.of the, prpsent Jnvention embraces other possible variations, being limited only by the contents of the accompanying claims, which include the-possible equivalents. , x

Claims

CLAIMS -, ~ - 1. A-wheel, particularly-_:for_use-on_vehicles,_comprising. a sub-. stantially eylindrical^:rim-(3)-and a substantialiy-eirGular-disc-(2-)-GonGentric with- the rim (3), the rim (3) having at least one annular recess (320) having at least one main wall (323), and a longitudinal axis (110), the wheel (1 ) being characterized in that the main wall (323) has a direction defined by a fourth straight line (52), the fourth straight line (52) and the. longitudinal axis (110) defining a substantially acute angle (α). ^{""" ""* "'}"^{'"" * ~''"~} 2. A wheel according to claim 1 ,. characterized in that the angle (α) has a value lower than 25 degrees. ^{* ' '"}..... ^' . ,- 3. A wheel according to claim 1 or 2, characterized in that the disc (2) comprises at least one external region (21 ), whereby it is associated to the wheel rim (3), and has at least one ventilation window (221 ) delimited by a border (2211) that surrounds it throughout its extent and defines its ^" shape. ^{'■ "} •;_. ^' -.-'X ---r:.-, -^ ^ ^-^ -, — 4. A wheel according to claim 3,_. characterized" by having a plurality of ventilation windows (221), the border (2211 ) of each window (221 ) comprises a point (P), located in the external region (21 ), the point (P) corresponding to the point of the border (2211) substantially farthest from the cen- ter of the disc (2). 5. A wheel according to claim 4, characterized in that the external region (21 ) defines an area with region of the border (2211) of each of the windows (221 ), the value of the area of the external region (21) of the disc (2) at the point of the border (2211 ) substantially farthest from it center being equal for all the windows (211 ). 6. A wheel according to claims 1 , 2, 3, 4 or 5, characterized in that the annular recess (320) further has at least one first wall (321 ) and at least one second wall (322), which define directions concurrent with the longitudinal axis (110) of the rim (3) and are joined to each other by the main wall (323). 7. A wheel according to claim 6, characterized by having a valve through-bore (3211 ), located in the first wall (321 ) and the longitudinal axis of which passes through the ventilation window (221 ). 8. A wheel according to claim 7, characterized in that a substantially cylindrical valve (ij -fs^'associated to the valve through-bore ^"(32 lT)^~ which has a first end (40) fixed to the valve through-bore (3211 ) and a sec- ond end (41 ), free and opposite the first one. 9. A wheel according to claim 8, characterized in that there is a distance (d) between the free end (41 ) of the valve (4) and the border (2211) of the ventilation window (221 ) at the point of the border (2211). substantially farthest from the center of the disc (2). 10. A wheel according to claim 6 or 9, characterized in^" that the first wall (321) and the main wall (323) define substantially ^"rectilinear stretches. 11. A wheel, particularly for use on vehicles, comprising a substantially cylindrical rim (3) and a substantially circular disc (2) that is concen- trie with the rim (3), ;, .. , _r,. „_{, , -j} . . _i; - the disc (2) comprising at least one end region (21),. whereby it is associated to the wheel rim (3) and having at least two ventilation windows (221 ), each of the windows being delimited by a border (2211) that surrounds it throughout its extent and defines its shape; - the borders (2211 ) of the ventilation windows (221 ) comprising a point (P) located at the external region (21) of the disc (2), the point (P) corresponding to the point of the border (2211) substantially farthest from the center of the disc (2); - the rim (3) comprising at least one annular recess (320) having at least one first wall (321 ) and at least one main wall (323), and a longitudinal axis (110), the first wall (321) defining a direction concurrent with the longitudinal axis (110); and - the first wall (321 ) comprising at least one valve through-bore (3211 ) for association of the valve (4) provided with a first end (40) fixed to the valve bore (3211 ) and a second end (41 ), which is free and opposite the first one; - the wheel (1) being characterized in that there is a distance (d) between the free end (41 ) of the valve (4) and the border (2211 ) of the ventilation wall (221) at the point of the border (2211 ) substantially farthest from the center of the disc (2); and the eκte_mal region (21 ) define, an area- (A) with the border region (2211 )Of eaclr fthe windows (221.1 ), the value of the area (A) external region (21) of the disc (2) at the point of the border (2211 ) substantially farthest from its center being equal for all the at least two windows (211 ). 12. A wheel according to claim 11 , characterized in that: the annular recess (320) further has at least one second wall (322) that defines a direction concurrent with the longitudinal axis (110) of the rim (3), the first wall (321) and the second wall (322) being joined to each other by the main wall (323). 13. A wheel according to claim 12, characterized in that the first wall (321 ) and the main wall (323) define substantially rectilinear stretches. 14. A wheel rim, particularly for use on vehicle wheels, having a substantially cylindrical shape and having at least one annular recess (320) provided with at least one main wall (323), and a longitudinal axis (110), characterized in that the main wall (323) has a direction defined by a fourth straight line (52), the fourth straight line (52) and the longitudinal axis (110) defining a substantially acute angle (α). 15. A rim according to claim 14, characterized in that the. angle has a value lower than 25 degrees. 16. A rim according to claim 14 or 15, characterized in that the annular recess (320) further has at least one first wall (321) and at least one second wall (322) which define directions concurrent with the longitudinal axis (110) and are joined to each other by the main wall (323).- 17. A rim according to claim 16, characterized by having a valve through-bore (3211 ) located in the first wall (321 ). 18. A rim according to claim 16, characterized the first wall (321 ) and the main wall (323) define substantially rectilinear stretches. 19. A rim according to any one of claims 14 to 18, characterized by comprising a first and a second end regions (31) and (31 ') and an inter- mediate region (32) located therebetween. 20. A rim according to claim 19, characterized in that the first wall (321 ) projects from the first external region (31 ). 21. rim accordiήg1α^;efaim 19y eharacterized^'ih that-the first wall (322) projects from the intermediate region (32).