CN101524950A - Inflatable radial ply tyre for over loading - Google Patents
Inflatable radial ply tyre for over loading Download PDFInfo
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- CN101524950A CN101524950A CN200910005196A CN200910005196A CN101524950A CN 101524950 A CN101524950 A CN 101524950A CN 200910005196 A CN200910005196 A CN 200910005196A CN 200910005196 A CN200910005196 A CN 200910005196A CN 101524950 A CN101524950 A CN 101524950A
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Abstract
The invention provides a pattern structure of an inflatable radial ply tyre for over loading, which can effectively prevent uneven wear such as wheel track wear generated at the edge of the pattern block in driving and prevent peeling due to heating in driving in the condition of improving the brake force and drive force but not reducing any performance so as to increase the endurance life of the tire. The invention is characterized by comprising half pattern grooves (SG1, SG2, SG3, SG4) with a step shape, which take a center pattern groove (G2) as center and are obliquely arranged with an interval corresponding to each pitch on the center blocks (B2, B3) at two sides of the center pattern groove to communicate a center pattern groove (G2) and side pattern grooves (G1, G3), wherein the center pattern groove (G2) is formed in a sawtooth shape in the center of the tire tread and the side pattern grooves (G1, G3) are formed in a sawtooth shape at two sides. The half pattern grooves (SG1, SG2) formed on the center pattern block (B2) and the half pattern groove (SG3, SG4) formed on the center pattern block (B3) are intercrossed and have different oriention. A transverse pattern groove (LG) is formed by bending an angle to the width direction of the tire tread.
Description
Technical field
The present invention relates to a kind of pattern structure of Pneumatic radial tire for heavy load, specifically, the pattern structure that relates to following Pneumatic radial tire for heavy load: can suppress effectively to overload, long-distance running is with the wheel-rail wear and tear isogonic wearing and tearing that produce in the marginal portion of pattern block in the tire, improve braking force and propulsive effort simultaneously but do not cause the low of various performances, in preventing to travel because of peeling off that heating causes, thereby can improve the endurance life of tire and form tyre surface.
Background technology
Usually, the heavy duty pneumatic radial tyre that is usually used in city motor bus, lorry etc., for the drainage that improves in propulsive effort, braking force and the raising rainwater weather forms coarse decorative pattern, promptly with tyre surface that the road surface contact on design the rib decorative pattern of a plurality of circumferencial directions formation is arranged.But, the tire that has aforesaid rib pattern structure in overload, the long-distance running, have in the marginal portion of pattern block polygon or the wearing and tearing of wheel-rail wear and tear isogonic take place, have and not only reduce sense by bus, also can reduce shortcomings such as vehicle mileage (operating range) and durability greatly.
In the past for preventing that this class eccentric wear from decreasing, tire tread pattern as shown in Figure 1 is provided, on rib piece B1 that the groove G1, the G2 that are formed by tire circumferential direction divide, B2, B3, B4, broad ways forms a plurality of finedraw K to groove (G1, G2) opening, is used for preventing that the wheel-rail wear and tear isogonic that travels in the generation of the marginal portion of rib piece from wearing and tearing.
In the accompanying drawing, the line of centers of the circumferencial direction of label " C " expression tire.
But above-mentioned tread contour has the rigidity that reduces pattern block and reduces resistance to abrasion, and during heavily loaded and long-distance running at high speed, pattern block mobile causes generating heat and make cord separation and shortcoming such as peel off.
In addition, korean patent application discloses the 2001-0048456 communique and discloses following tread contour: pattern block front-end edge and back edge in tire shoulder portion respectively form the inclination rib, is benchmark with this inclination rib with the Central Line of pattern block, form on reciprocal position, the rigidity that is used to strengthen the pattern block of tire shoulder portion reduces inordinate wear.In addition, Japanese Patent Application Publication 2007-210393 communique discloses a kind of at the main groove of circumferencial direction with by inserting the edge groove in the pattern block edge of laterally dividing, to improve the tread contour of tractive property and drainage.But above-mentioned tread contour has similar problem to the tread contour that forms finedraw K as mentioned above, and has cause when travelling that tractive force hangs down inferior problem on non-pitchy road.
Summary of the invention
The pattern structure that the purpose of this invention is to provide a kind of following Pneumatic radial tire for heavy load: can suppress effectively to overload, long-distance running is with the wheel-rail wear and tear isogonic wearing and tearing that produce in the marginal portion of pattern block in the tire, improve braking force and propulsive effort simultaneously but do not cause the low of various performances, in preventing to travel because of peeling off that heating causes, thereby can improve tire life.
In order to achieve the above object, the invention provides a kind of pattern structure of Pneumatic radial tire for heavy load, described tire comprises: vertical groove, have core ditch that forms at the central part of tire protector and the side groove that forms in its both sides, described core ditch and side groove are concatenated to form with zig-zag along the circumferencial direction of tire; Horizontal groove forms with the pitch identical with described vertical groove in described tire tire shoulder portion; And connect described core ditch and side groove and divide a plurality of central blocks between it and divide a plurality of shoulder blocks between described side groove one side and the tire shoulder portion; Described tread bar structure also comprises half groove of stairstepping, described half groove is the center with described core ditch, corresponding per 1 pitch separates certain intervals and oblique arrangement on described central block, to be communicated with described core ditch and side groove, half groove that forms on half groove that forms on the described central block and the described central block forms mutually across, and have different orientations, form described horizontal groove to the crooked certain angle of Width of tire protector.
In addition, in the present invention, described core ditch and side groove and described central block and shoulder block satisfy following relation and form:
0.065TW≤GW1 and GW3≤0.085TW
0.060TW≤GW2≤0.070TW
0.2TW≤RW1 and RW4≤0.25TW
0.17TW≤RW2 and RW3≤0.22TW
Wherein, TW is the tread of tyre width, GW1 and GW3 are the width of the side groove that forms between central block and shoulder block, GW2 is the width of the core ditch that forms between central block and the central block, RW1 and RW4 are the width of the shoulder block with extreme length observed from tire protector outermost line, and RW2 and RW3 are the width between two fins of central block.
In addition, among the present invention, on described central block and shoulder block, form jagged core ditch and the side groove forms recessed rib and fin by described, the angle that the recessed rib of described central block and shoulder block and fin and described groove begin to form between the 1 rectangular pitch datum line of the circumferencial direction of jagged certain point is 70 °～80 °.
In addition, in the present invention, described half groove is the center with each central authorities of half groove, arranges with the form of cw or anticlockwise direction Rotate 180 °.
In addition, in the present invention, described horizontal groove is observed from the outermost contour of described tire protector, and the vertical distance from the outermost contour of tire protector to horizontal groove is in 40%～50% scope of the width RW1 of the shoulder block with extreme length or RW4.
As mentioned above, according to the present invention, the eccentric wear that can not only be suppressed at the marginal portion generation of the pattern block that contacts with vertical groove effectively decreases, can improve simultaneously braking force and propulsive effort but do not cause the low of various performances, in preventing to travel because of peeling off that heating causes, thereby the endurance life that can improve tire.
Description of drawings
Fig. 1 is the planar view of existing tread of tyre decorative pattern;
Fig. 2 is the planar view of the pattern structure of expression Pneumatic radial tire for heavy load of the present invention.
Label declaration:
G1, G3: side groove G2: core ditch
B1, B4: shoulder block B2, B3: central block
B3, B4: main piece LG: horizontal groove
SG1, SG2, SG3, SG4: half groove
The specific embodiment
Elaborate below in conjunction with the pattern structure of accompanying drawing to Pneumatic radial tire for heavy load of the present invention.
Tyre surface according to Pneumatic radial tire for heavy load of the present invention has sawtooth pattern 4-rib type decorative pattern.At this, as shown in Figure 2, " sawtooth pattern 4-rib type decorative pattern " is meant by 4 pattern block B1, B2, B3, B4 and 3 vertical groove G1, G2, G3 and divides that the global shape of this pattern block and vertical groove forms zig-zag along the circumferencial direction (travel direction) of tire.
Core ditch G2 that vertical groove G1, G2, G3 are formed by the central part at the ground plane (being tyre surface) of tire and side groove G1, the G3 that forms in its both sides form, and they are concatenated to form with zig-zag.In the accompanying drawing, the line of centers of the circumferencial direction of label " C " expression tire.
Pattern block B1, B2, B3, B4 comprise: connect core ditch G2 and side groove G1, G3 and divide a plurality of central block B2, B3 between it, and divide side groove G1, the side of G3 and a plurality of shoulder block B1, the B4 between the tire shoulder portion.With central block B2, B3 and shoulder block B1, B4 that vertical groove G1, G2, G3 contact on, by forming jagged core ditch G2 and side groove G1, G3 form recessed rib and fin.Thus, vertical groove G1, G2 make the recessed rib of central block B2, B3 and shoulder block B1, B4 and the angle [alpha] of fin form 70 °～80 °.For example, if the end that shoulder block B1 contacts with side groove G1 is P1, P2, P3, the end that central block B2 contacts with side groove G1 is P4, P5, P6, and beginning to form the rectangular imaginary line of the circumferencial direction of jagged certain point when being 1 pitch datum line O with vertical groove G1, G2, G3, the formed angle of line of the formed angle [alpha] of line of the some P3 point of connection P2 on 1 pitch datum line O and the shoulder block B1 and the some P6 point of connection P5 on 1 pitch datum line O and the central block B2 is 70 °～80 °.
In addition, inside at central block B2, B3 and shoulder block B1, B4, with core ditch G2 is the center, and corresponding per 1 pitch P separates certain intervals and is formed with half groove SG1, SG2, SG3, SG4 on central block B2, B3, to be communicated with core ditch G2 and side groove G1, G3.Half groove SG1, SG2, SG3, SG4 have to tread of tyre Width inclination certain angle order of a permutation echelon form.In more detail, half groove SG1, SG2, SG3, SG4 have the structure of following generally'S '-shaped: the centre portion on central block B2, B3 is crooked at a certain angle, indulges groove inclination certain angle from the intermediate portion to both sides.
In addition, central block B2 goes up half groove SG1, the SG2 and the central block B3 that form and goes up half groove SG3, the SG4 formation across mutually that forms, and has different orientations.As shown in Figure 2, half groove SG3, SG4 are the center with each central authorities of half groove SG1, SG2 as can be known, arrange with the shape of cw or anticlockwise direction Rotate 180 °.
In addition, the label among Fig. 2 " LG " is illustrated in the horizontal groove of the tire shoulder portion formation of tire.This horizontal groove LG in vertical groove G1, G2, G3, when being 1 pitch P with the length of a zigzag fashion circumferencial direction, forms identical pitch P with vertical groove G1, G2, G3.In addition, horizontal groove LG forms the crooked certain angle of Width to tire protector, thereby particularly in vehicle ', for improving transverse slip and tractive force, preferably observe from the outermost contour L of tire protector, the vertical distance LGH from the outermost contour L of tire protector to horizontal groove LG is in 40%～50% scope of the width RW1 of shoulder block B1, B4 with extreme length or RW4.
And preferably core ditch G2 and side groove G1, G3 and central block B2, B3 and shoulder block B1, B4 satisfy following relation formation:
0.065TW≤GW1 and GW3≤0.085TW
0.060TW≤GW2≤0.070TW
0.2TW≤RW1 and RW4≤0.25TW
0.17TWRW2 and RW2≤0.22TW
Wherein, TW is the width of tire protector, GW1 and GW3 are the side groove G1 that forms between central block B2, B3 and shoulder block B1, the B4, the width of G3, GW2 is the width of the core ditch G2 that forms between central block B2 and the central block B3, as mentioned above, RW1 and RW4 are the shoulder block B1 with extreme length that observes from tire protector outermost line L, the width of B4, and RW2 and RW3 are the width between two fins of central block B2, B3.
In the above-mentioned relation formula, GW1 and GW3 are during less than 0.065TW, the width of side groove G1, G3 becomes too narrow, though help wearing and tearing, be unfavorable for dispelling the heat effectively, and have a negative impact to peeling off, GW1 and GW3 are during greater than 0.085TW, it is big that the width of side groove G1, G3 becomes, though be beneficial to heat radiation, the width of pattern block B1, B2, B3, B4 diminishes and can cause wearing and tearing low.
In addition, GW2 is during less than 0.060TW, as mentioned above, the width of core ditch G2 becomes too narrow, though help wearing and tearing, be unfavorable for heat radiation, have a negative impact to peeling off, GW2 is during greater than 0.070TW, and the width of core ditch G2 broadens, help heat radiation, but the narrowed width of pattern block B1, B2, B3, B4 can cause wearing and tearing low.
In addition, less than 0.2TW, then can promote the eccentric wear of shoulder block B1, B4 to decrease and premature wear as RW1 and RW4, greater than 0.25TW, then the width of shoulder block B1, B4 is too wide as RW1 and RW4, and peeling off of causing of heating had a negative impact.
Equally, less than 0.17TW, then can promote the premature wear of central block B2, B3 as RW2 and RW3, greater than 0.22TW, then the width of central block B2, B3 becomes big as RW2 and RW3, and peeling off of causing of heating had a negative impact.
As mentioned above, describe the present invention by preferred embodiment, but the present invention is not limited to this, in not breaking away from thought of the present invention and scope, those skilled in the art can carry out variations and modifications.
Claims (5)
1. the pattern structure of a Pneumatic radial tire for heavy load, described tire comprises:
Vertical groove (G1, G2, G3), have core ditch (G2) that forms at the central part of tire protector and the side groove (G1, G3) that forms in its both sides, described core ditch (G2) and side groove (G1, G3) are concatenated to form with zig-zag along the circumferencial direction of tire;
Horizontal groove (LG) forms with the pitch identical with described vertical groove (G1, G2, G3) in described tire tire shoulder portion; With
Connect described core ditch (G2) and side groove (G1, G3) and divide a plurality of central blocks (B2, B3) between it and divide a plurality of shoulder blocks (B1, B4) between described side groove (G1, a G3) side and the tire shoulder portion;
Described tread bar structure is characterized in that,
Half groove (the SG1 that also comprises stairstepping, SG2, SG3, SG4), described half groove is the center with described core ditch (G2), at described central block (B2, B3) go up corresponding per 1 pitch and separate certain intervals and oblique arrangement, to be communicated with described core ditch (G2) and side groove (G1, G3), described central block (B2) is gone up the half groove (SG1 that forms, SG2) go up the half groove (SG3 that forms with described central block (B3), SG4) form across mutually, and has different orientations
The crooked certain angle of Width to tire protector forms described horizontal groove (LG).
2. the pattern structure of Pneumatic radial tire for heavy load as claimed in claim 1 is characterized in that, described core ditch (G2) and side groove (G1, G3) satisfy following relation with described central block (B2, B3) and shoulder block (B1, B4) and form:
0.065TW≤GW1 and GW3≤0.085TW
0.060TW≤GW2≤0.070TW
0.2TW≤RW1 and RW4≤0.25TW
0.17TW≤RW2 and RW3≤0.22TW
Wherein, TW is the tread of tyre width, GW1 and GW3 are the width of the side groove (G1, G3) of formation between central block (B2, B3) and shoulder block (B1, B4), GW2 is the width of the core ditch (G2) of formation between central block (B2) and the central block (B3), RW1 and RW4 are the width of the shoulder block with extreme length (B1, B4) observed from tire protector outermost line (L), and RW2 and RW3 are the width between two fins of central block (B2, B3).
3. the pattern structure of Pneumatic radial tire for heavy load as claimed in claim 1, it is characterized in that, on described central block (B2, B3) and shoulder block (B1, B4), form jagged core ditch (G2) and side groove (G1, G3) forms recessed rib and fin by described, the angle (α) that the recessed rib of described central block (B2, B3) and shoulder block (B1, B4) and fin and described groove begin to form between the 1 rectangular pitch datum line (O) of the circumferencial direction of jagged certain point is 70 °～80 °.
4. as the pattern structure of each described Pneumatic radial tire for heavy load in the claim 1～3, it is characterized in that, described half groove (SG3, SG4) is the center with each central authorities of half groove (SG1, SG2), arranges with the form of cw or anticlockwise direction Rotate 180 °.
5. as the pattern structure of each described Pneumatic radial tire for heavy load in the claim 1～3, it is characterized in that, described horizontal groove (LG), observe from the outermost contour (L) of described tire protector, the vertical distance (LGH) from the outermost contour (L) of tire protector to horizontal groove (LG) is in 40%～50% scope of width RW1 with shoulder block of extreme length (B1, B4) or RW4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020080021540 | 2008-03-07 | ||
| KR20080021540 | 2008-03-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101524950A true CN101524950A (en) | 2009-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910005196A Pending CN101524950A (en) | 2008-03-07 | 2009-02-10 | Inflatable radial ply tyre for over loading |
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|---|---|
| CN (1) | CN101524950A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303069A (en) * | 2012-03-15 | 2013-09-18 | 住友橡胶工业株式会社 | Pneumatic tire |
| CN103350617A (en) * | 2013-07-25 | 2013-10-16 | 厦门正新橡胶工业有限公司 | Tread structure of radial tyre |
| CN105015276A (en) * | 2015-08-07 | 2015-11-04 | 正新橡胶（中国）有限公司 | Air inflation tire |
| CN105799428A (en) * | 2014-12-29 | 2016-07-27 | 青岛黄海橡胶有限公司 | Lorry tyre tread |
| CN106470849A (en) * | 2014-07-23 | 2017-03-01 | 横滨橡胶株式会社 | Heavy duty pneumatic vehicle tire |
| CN114746330A (en) * | 2019-11-25 | 2022-07-12 | 米其林集团总公司 | Tread for vehicle track |
-
2009
- 2009-02-10 CN CN200910005196A patent/CN101524950A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303069A (en) * | 2012-03-15 | 2013-09-18 | 住友橡胶工业株式会社 | Pneumatic tire |
| CN103350617A (en) * | 2013-07-25 | 2013-10-16 | 厦门正新橡胶工业有限公司 | Tread structure of radial tyre |
| CN103350617B (en) * | 2013-07-25 | 2016-03-02 | 厦门正新橡胶工业有限公司 | Tread structure of radial tyre |
| CN106470849A (en) * | 2014-07-23 | 2017-03-01 | 横滨橡胶株式会社 | Heavy duty pneumatic vehicle tire |
| CN106470849B (en) * | 2014-07-23 | 2018-04-20 | 横滨橡胶株式会社 | Heavy duty pneumatic vehicle tire |
| CN105799428A (en) * | 2014-12-29 | 2016-07-27 | 青岛黄海橡胶有限公司 | Lorry tyre tread |
| CN105015276A (en) * | 2015-08-07 | 2015-11-04 | 正新橡胶（中国）有限公司 | Air inflation tire |
| CN114746330A (en) * | 2019-11-25 | 2022-07-12 | 米其林集团总公司 | Tread for vehicle track |
| CN114746330B (en) * | 2019-11-25 | 2023-11-03 | 米其林集团总公司 | Tread for a track of a vehicle |
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Open date: 20090909 |