CN101249780B - Inflatable pneumatic tyre - Google Patents
Inflatable pneumatic tyre Download PDFInfo
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- CN101249780B CN101249780B CN2008100808662A CN200810080866A CN101249780B CN 101249780 B CN101249780 B CN 101249780B CN 2008100808662 A CN2008100808662 A CN 2008100808662A CN 200810080866 A CN200810080866 A CN 200810080866A CN 101249780 B CN101249780 B CN 101249780B
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Abstract
The invention provides an air tire, the displayed mark on sidewall surface of the air tire is excellent in visual identification extent, the air tire can in a long term maintain the visual identification extent of tire. The air tire (1) provided with a mark (12) on the sidewall (3) comprises the mark (12), a mark area (10) of a background part (11) of the mark which is inwardly formed via a concave surface in a direction from the sidewall surface to the tire shaft, and a convex surface forming mark (12) which is provided in a manner of protrusion on the mark area (10) corresponding to the concave surface, the surface of the mark (12) comprises a mirror surface part including surface roughness that arithmetic mean surface roughness (Ra) is 0.4 to 1.5 mum, the background part (11) comprises a rough surface part whose surface roughness is over 1.5 mum.
Description
Technical field
The present invention relates to a pneumatic tire, more particularly relates to a pneumatic tire, the pneumatic tire provided in the sidewall surface of the text, numbers, graphics, symbols, or the visual identification of the mark (visibility) is excellent.
Background technology
In the past; On the sidewall surfaces of tire, representing has by the literal, numeral, the symbol that show producer's title, brand name, tire size etc., perhaps be used to represent tire hand of rotation, be used to decorate the mark that the figure of the layout etc. of side (サ イ De De レ ス ア Star プ) constitutes.
Usually, mark is to represent from the outstanding mode of sidewall surfaces.And, on the sidewall surfaces of tire, carve to be provided with and a plurality ofly be called the trickle groove of ridge and constitute the decoration body, show the mark of literal etc. through this decoration body surface.For example; Open in the flat 11-20416 communique the spy, only on the literal that serves as a mark, carve and establish ridge, utilize the reflection of light situation and do not have to carve the different phenomenon expressive notation of background of establishing ridge; And, form the visual identification that different ridges improves mark with the background portion of surrounding this mark at mark.
But, under the situation that constitutes mark on the above-mentioned ridge,, cause the aesthetic appearance of tire to worsen if the long-term use tire then will accumulate the tiny rubbish of dust etc., the dirt of wet goods at the bottom land of ridge, the visual identification of mark is reduced.And, clean rubbish, the dirt that accumulates in trickle ridge trench bottom and be not easy, and the dirt that will remove the mold release etc. of the bottom land that is accumulated in the metal paattern side needs numerous and diverse operation.
In addition, proposed various technical schemes in the past, and for example, opened to have put down in writing in the 2000-142026 communique the spy roughness of surface is set in 1.5～20 μ m, improves the technology of the glossiness on surface as the means of the aesthetic appearance that improves tire; Open the spy and to have put down in writing the bigger scope that roughness of surface is set in 5～500 μ m in the 2003-252012 communique, diffuse, make the tone of surface of tyre to appear to have pitch-black sensation through this asperities portion; The spy open put down in writing in the 2004-17964 communique make roughness of surface very little, make surface gloss very big, and postpone additive to the diffusion on surface, improve the technology of outward appearance.
But; The method that limits the roughness of surface of above-mentioned tire is the technology that is adjusted to specific roughness to the abrasive particulate material of the metal paattern forming face metal injection of tire or glass hollow bead etc., with forming face; Be suitable for adjusting the big regional roughness of tire side; And specific part, the particularly literal or the visuals with densification of the sidewall of above-mentioned mark etc. formed specific roughness, also be the comparison difficulty even select abrasive particulate material or injection conditions.And,, then when tire contacts with curb etc., will form eye-catching scratch easily, reduce aesthetic appearance on the contrary if roughness of surface is provided with very for a short time, glossiness is set significantly.
Summary of the invention
The present invention is point in view of the above problems; Its objective is provides a kind of air-inflation tyre, this airtyred visual identification excellence that is illustrated in the mark of sidewall surfaces, and can prevent that rubbish, dirt are attached on the mark; Be difficult to receive wound; And can keep the aesthetic appearance of tire for a long time well, thus, can keep improving the effect of the visual identification of mark for a long time.
And the present invention provides a kind of air-inflation tyre, and the light reflective of the outside face of this airtyred side wall portion is rich to be changed, and can improve the aesthetic appearance of tire thus.
Inventor of the present invention has carried out research with keen determination in order to address the above problem; The mark of having found the side surface through making tire represent the zone have the minute surface portion of regulation roughness of surface, and through this minute surface portion of design in the axial configuration height of tire, can solve above-mentioned problem.
That is, the present invention is a kind of air-inflation tyre, it is characterized in that, the part of the sidewall outside face of tire is provided with minute surface portion and asperities portion, and the arithmetic mean surface roughness (Ra) of said minute surface portion has the roughness of surface of 0.4～1.5 μ m; The Ra of said asperities portion surpasses 1.5 μ m.
Air-inflation tyre of the present invention; Sidewall is provided with in the air-inflation tyre of mark; The marked region that comprises the background portion of above-mentioned mark and this mark is formed on than the above-mentioned sidewall surfaces inboard position of roller tire direction of principal axis more through concave surface, and above-mentioned minute surface portion is set at least a portion of above-mentioned marked region.
And; The present invention is a kind of air-inflation tyre; On at least a portion of the outside face of sidewall, be arranged in parallel and form a plurality of recessed; This recessed is extended, has the bending section continuously, and the bottom surface at least of above-mentioned curve comprises minute surface portion, and above-mentioned recessed outside face that forms the zone except above-mentioned minute surface portion comprises asperities portion.
And; The present invention is a kind of air-inflation tyre; On at least a portion of the outside face of side wall portion, be formed with recess and protuberance alternate configurations and the jog that forms, at least a portion surface of said recess comprises minute surface portion, and the neighboring area that surrounds said minute surface portion comprises asperities portion.
Description of drawings
Fig. 1 is the block diagram of the tire semi-section of first embodiment.
Fig. 2 is the section-drawing of the X-X line in Fig. 1.
Fig. 3 is the block diagram of the tire semi-section of second embodiment.
Fig. 4 is the section-drawing of the Y-Y line in Fig. 3.
Fig. 5 is the block diagram of the tire semi-section of the 3rd embodiment.
Fig. 6 is the part sectional view of the X-X line in Fig. 5.
Fig. 7 is the part sectional view of another example 1 of the X-X line section in Fig. 5.
Fig. 8 is the part sectional view of another example 2 of the X-X line section in Fig. 5.
Fig. 9 is the part sectional view of another example 3 of the X-X line section in Fig. 5.
Figure 10 is the part sectional view of the Y-Y line in Fig. 5.
Figure 11 is the part sectional view of sidewall of the tire of comparative example 5.
Figure 12 is the part sectional view of sidewall of the tire of comparative example 10.
Figure 13 is the tyre side view of the 4th embodiment.
Figure 14 is the instruction diagram of the concavo-convex state of explanation jog.
Figure 15 is the part sectional view of the X-X line section in Figure 14.
Figure 16 is the instruction diagram of concavo-convex state of the jog of explanation variation 1.
Figure 17 is the part sectional view along the Y-Y line section of Figure 16.
Figure 18 is the instruction diagram of summit accentric example of the rectangular pyramid recess of expression variation 2.
Figure 19 is the instruction diagram of concavo-convex state of the jog of explanation variation 3.
Figure 20 is the instruction diagram of concavo-convex state of the jog of explanation variation 4.
The specific embodiment
Below, with reference to accompanying drawing embodiment of the present invention is described.
[first embodiment]
Fig. 1 is the block diagram of the semi-section of tire, representes the sidewall surfaces of the air-inflation tyre T1 (below, air-inflation tyre is called simply " tire ") of first embodiment of the present invention, and Fig. 2 (a)～(e) is the X-X line section-drawing among Fig. 1.In Fig. 2 (a)～(e), for convenience's sake, the curved surface of sidewall surfaces is launched into the plane representes.
Tire T1 is made up of fetus face 2, side wall portion 3 and tyre beads portion 4, and said side wall portion 3 extends to the tire radius direction outside from the two ends of fetus face 2; Said tyre beads portion 4 is connected with the outer end of this side wall portion 3 and is fixed on the wheel rim bead.In this example, illustration riding Vehicular radial ply tyre, this radial-ply tyre has linear configuration carcass 6, belt 7, band enhancement Layer 8, said linear configuration carcass 6 turns back and fastening carcass folded end around tyre beads core 5; Said belt 7 is configured in facial 2 peripheries of tire of this carcass 6; Said band enhancement Layer 8 is wound on the periphery of belt 7.
On the surface of the sidewall 3 of tire T1, expression has by the literal, numeral, the symbol that show producer's title, brand name, tire size etc., perhaps be used to represent tire hand of rotation, be used to decorate the mark 12 that the figure of the layout etc. of side constitutes.In Fig. 1, mark 12 is as establishing literal quarter and being shown as text line (TOYO).
Around above-mentioned mark 12, be provided with background portion 11, this background portion 11 by the background of the visual identification that is used to improve mark 12, promptly do not have decorative pattern face (burnt ground) and constitute, constitute marked regions 10 through mark 12 and background portion 11.
Above-mentioned marked region 10 is formed by the concave plane in tire T1, and this concave plane more is provided with to the inboard depression of tire direction of principal axis than the surperficial 3a of sidewall 3.
Above-mentioned marked region 10 is with respect to the axial degree of depth L of the tire of sidewall surfaces 3a; Be not confined to tire radial width W especially, for example be expressed as following scope among the figure, promptly; Be preferably about 0.5～3.0mm as degree of depth L, be preferably (with reference to Fig. 2 (a)) about 4～40mm as width W.
If above-mentioned degree of depth L is not enough 0.5mm, then, tire and curb etc. will form scratch easily when contacts, if above 3.0mm, then in the root edge portion of concave surface formation, will concentrate the middle stress that goes, be easy to generate crackle.In addition, if the not enough 4mm of width W, the narrowed width of marked region 10 then, the labeling section area must diminish, be difficult to obtain to improve the effect of visual identification, if surpass 40mm, then receives the wound that causes because of curb etc. easily and reduces aesthetic appearance.
In tire T1, the surface element 12a of above-mentioned mark 12 is made up of minute surface, and it is the roughness of surface of 0.4～1.5 μ m that said minute surface has arithmetic average surface roughness (Ra), and said background portion 11 is made up of the asperities that Ra surpasses the roughness of surface of 1.5 μ m.
Thus, the difference of the glossiness of the surperficial 11a of background portion that the labeled surface 12a that constitutes through minute surface and asperities constitute makes reflection of light property different, and mark 12 is eye-catching can to improve its visual identification through making.
The Ra of above-mentioned minute surface portion is set at the scope of 0.4～1.5 μ m; If but Ra less than 0.4 μ m, then the light reflective of labeled surface 12a will become greatly, have twinkling tendency, seem whiter, cause the visual identification of mark 12 to reduce sometimes on the contrary; In addition; Adhere to from the teeth outwards under the situation of mud, wet goods, though clean easily, owing to the tiny wound that produces with curb friction etc. will become eye-catching.In addition, need on the tire metal paattern, carry out special surface treatment (for example, the electroplating processes of chromium etc.), the tire manufacturing cost rises, and is undesirable.In addition, if Ra surpasses 1.5 μ m, then in surface trickle concavo-convex, can get into the small garbage of dust etc., the dirt of wet goods, and cleaning worsens, when all can not take out dirt, reduction is as the aesthetic appearance of minute surface portion.
In addition, the Ra difference of above-mentioned labeled surface 12a that is made up of minute surface and the background portion surface 11a that is made up of asperities is preferably more than the 1 μ m.If this difference is more than the 1 μ m, then both glossinesses will produce poorly significantly, can improve the visual identification of mark 12 effectively.
The upper limit of the Ra of this asperities portion has no particular limits, preferably less than 2 μ m.If Ra is more than the 2 μ m, then the surface is with creped, and the concavo-convex change of rubber surface is big, adheres to rubbish etc. thus easily, and ozone resistance (ゾ of anti-オ Application property) worsens, is easy to generate long-time use and the ozone crackle (オ ゾ Application Network ラ Star Network) that causes.
Above-mentioned roughness of surface (Ra) be to use contact pin type surface roughness meter, according to the regulation of JIS B0601 (contact pin type surface roughness measurement device) measure, the arithmetic mean surface roughness of the concave-convex surface degree of the area of unit length.
The Ra of above-mentioned marked region 10 forms through the tire-vulcanizing metal paattern, and said tire-vulcanizing metal paattern is provided with the forming face with the roughness of surface that equates in fact with the roughness of this surface of tyre.That is, with the roughness of surface of metal paattern be shaped through adding sulphur, with identical in fact roughness of surface transfer printing on outer surface of tire.
The roughness of surface of above-mentioned metal paattern forming face for example can use shot-peening method (シ ヨ Star ト Block ラ ス ト method), mirror ultrafinish method etc. or and adjusts with the known method of these methods etc.
In tire T1 of the present invention, above-mentioned mark 12 parts can form through the outstanding convex surface that is provided with in the face of the marked region that is arranged with from sidewall surfaces 10.And mark 12 can be divided through minute surface and asperities in conplane marked region 10 with background parts 11 and form.
In the example shown in Fig. 2 (a); Marked region 10 forms to the concave plane that the inboard depression of tire direction of principal axis is provided with through the surface from sidewall 3; Mark 12 (the elevation profile part of literal " O ") green phase forms for the background portion 11 outstanding convex surfaces that are provided with; Its surperficial 12a is made up of the minute surface portion of the roughness of surface with Ra0.4～1.5 μ m, and background portion 11 is made up of the asperities portion that Ra surpasses the roughness of surface of 1.5 μ m.
The outstanding tire direction of principal axis inboard that highly is preferably disposed on sidewall surfaces 3a that is provided with of this mark 12 can make labeled surface 12a be difficult to receive wound like this.The outstanding height that is provided with in this case is preferably about 20～80% of concave surface degree of depth L.
According to said structure, through mark 12 is formed the embossment literal, can make the glossiness of the labeled surface 12a that constitutes by minute surface seem outstanding in the marked region that constitutes by asperities 10, thus, can make mark 12 eye-catching, improve visual identification.
And; In the example shown in Fig. 2 (b); Form mark 12 and background parts 11 in the marked region 10 in same plane,, form the surface of background portion 11 through asperities through the surface of minute surface 12a formation mark 12; Divide with this, under the outstanding situation that mark 12 is set, can not take place that stress is concentrated and the crackle that produces in the prominent edge portion that erects that establishes portion from marked region 10.
In addition; In the example shown in Fig. 2 (c), form mark 12 and background parts 11 in the marked region 10 in same plane, form the surface of mark 12 through minute surface 12a; Form the surface of background portion 11 through asperities; And around mark 12 (literal), stria 13 is set, divides both, the glossiness through making the labeled surface 12a that is made up of minute surface can make it further eye-catching with respect to the background portion that is made up of asperities 11 between the shade that is formed by stria 13.
In addition; In the example shown in Fig. 2 (d), form mark 12 and background parts 11 in the marked region 10 in same plane, form the surface of mark 12 through minute surface 12a; Form the surface of background portion 11 through asperities; And prominent bar 14 is set around mark 12 (literal), divides both, having the same effect of situation with above-mentioned Fig. 2 (c) thus, prominent bar 14 can further form protective effect to marked region 10, it is anti-traumatic to improve.
In addition; In the example shown in Fig. 2 (e), marked region 10 more forms the inboard concave plane of roller tire direction of principal axis through being arranged with on the surface than sidewall 3, and mark 12 green phases form for the concave surface that background portion 11 further is arranged with; Its surface element 12a is made up of minute surface, and background portion 11 is made up of asperities.
According to this structure; By mark 12 being formed sunk embossment literal (Shen body carving り literal); The glossiness of the labeled surface 12a that is made of minute surface is sunk in the marked region 10 that is made of asperities; Can give the visual identification of luminous in the dark impression, raising mark 12, and, can make mark 12 be difficult to be subjected to wound.In addition, constitute by convex surface owing to form the metal paattern forming face of labeled surface 12a, so its mirror ultrafinish processing ease.
In addition, the character string shown in the example "TOYO" means a peripheral edge portion in the text without trimming (Vela take ri) in the text field, the text is provided with trimming of course also available.
[second embodiment]
Fig. 3 is the block diagram of tire semi-section, representes second embodiment of the present invention, is the sidewall surfaces of tire T2.Fig. 4 (a)～(e) is the Y-Y line section-drawing among Fig. 3.In Fig. 4 (a)～(e), for convenience's sake, the curved surface of sidewall surfaces is launched into the plane representes.
Tire T2 is the riding Vehicular radial ply tyre that has with above-mentioned tire T1 identical inner structure (position identical with tire T1, identical parts are paid identical symbol); Expression has literal, numeral, the symbol that shows producer's title, brand name, tire size etc. on sidewall 3 surfaces of tire T2, perhaps be used to represent tire hand of rotation, be used to decorate the mark 22 of the design configuration etc. of side.In Fig. 3, mark 22 is as establishing literal quarter and being shown as text line (TOYO).
Around above-mentioned mark 22, be provided with background portion 21, this background portion 21 becomes the background of the visual identification that is used to improve mark 22, forms marked regions 20 through mark 22 and background portion 21.
In tire T2, above-mentioned marked region 20 more forms to the concave plane that tire direction of principal axis inboard is arranged with through the surperficial 3a than sidewall 3.
Above-mentioned marked region 10 is with respect to the axial degree of depth L of the tire of sidewall surfaces 3a; Be not confined to tire radial width W especially; For example likewise be expressed as following scope, that is, be preferably about 0.5～3.0mm as degree of depth L with first embodiment; Be preferably (with reference to Fig. 4 (a)) about 4～40mm as width W, its reason also is identical.
In tire T2, the surface element 22a of above-mentioned mark 22 is made up of the asperities that Ra surpasses the roughness of surface of 1.5 μ m, and the background portion 21 of mark 22 is made up of the minute surface that Ra surpasses the roughness of surface of 0.4～1.5 μ m.
Thus; Gloss official post reflection of light property through background portion surface 21a that is made up of minute surface and the labeled surface 22a that is made up of asperities is different; Make mark 22 in marked region, seem outstanding in 20 through making background portion 21 have glossiness, can improve visual identification.
The Ra of above-mentioned minute surface portion is the scope of 0.4～1.5 μ m.If Ra less than 0.4 μ m though then under the situation of adhering to mud, wet goods on the background portion surface 21, clean easily, will receive little wound through the friction with curb etc. easily, this wound is eye-catching easily.In addition, on the tire metal paattern, need special surface treatment (for example, the electroplating processes of chromium etc.), the tire manufacturing cost rises, and is undesirable.In addition,, then in surface trickle concavo-convex, will get into the small garbage of dust etc., the dirt of wet goods, and the cleaning variation, whenever all can not take out dirt, the aesthetic appearance of reduction minute surface portion if Ra surpasses 1.5 μ m.
In addition, the Ra difference of above-mentioned labeled surface 22a that is made up of asperities and the background portion surface 21a that is made up of minute surface is preferably more than the 1 μ m.If this difference is more than the 1 μ m, then both glossinesses will produce poorly significantly, can improve the visual identification of mark 22.
The Ra of above-mentioned marked region 20 forms through the tire-vulcanizing metal paattern, and said tire-vulcanizing metal paattern is provided with the forming face with the roughness of surface that equates in fact with the roughness of this surface of tyre.That is, with the roughness of surface of metal paattern be shaped through adding sulphur, with identical in fact roughness of surface transfer printing on outer surface of tire.
The roughness of surface of above-mentioned metal paattern forming face for example can use shot-peening method (シ ヨ Star ト Block ラ ス ト method), mirror ultrafinish method etc. or and adjusts with the known method of these methods etc.
And; Above-mentioned background portion 21 forms convex surface through the metal moulds of tyre side, so, apply the surperficial lapped finish of metal paattern easily; And; The maintaining of grinding again easily etc., said grind again to be used to remove through tire-vulcanizing be shaped and be deposited in the dirts such as mold release on metal paattern surface, can improve tire production rate and maintenance efficiency.
In tire T2 of the present invention, above-mentioned mark 22 parts can form through the outstanding convex surface that is provided with in the face of the marked region 20 that is provided with from the sidewall surfaces depression.In addition, in conplane marked region 20, divide formation mark 22 and background parts 21 through minute surface and asperities.
In the example shown in Fig. 4 (a); Marked region 20 more forms to the recessed surface that the inboard depression of tire direction of principal axis is provided with through the surperficial 3a than sidewall 3; Mark 22 (the elevation profile part of literal " O ") green phase forms for the background portion 21 outstanding convex surfaces that are provided with; Its surface element 22a is through having the asperities portion formation that Ra surpasses the roughness of surface of 1.5 μ m, and background portion 21 is the minute surface portion formation of 0.4～1.5 μ m through Ra.
But the outstanding tire direction of principal axis inboard that highly is preferably in sidewall surfaces 3a that is provided with of mark 22 is provided with, and can make labeled surface 22a be difficult to receive wound.The outstanding setting in this case highly is preferably about 20～80% of concave surface degree of depth L.
According to said structure,, the labeled surface 22a that is made up of asperities is given prominence in the marked region that is made up of the minute surface with glossiness 20 and eye-catching through mark 22 is formed the embossment literal.In addition, on background portion 21, can mirror the scenery of tire periphery etc., can further improve the aesthetic appearance of tire, effect is worth expectation.
In addition, in the example shown in Fig. 4 (b), form mark 22 and background parts 21 in the marked region 20 in same plane,, divide with this through with the surface of asperities 22a formation mark 22, with the surface of minute surface formation background portion 21.Under the outstanding situation that mark 22 is set, can not take place that stress is concentrated and the crackle that produces in the prominent edge portion that erects that establishes portion from marked region 20.
And, in the example shown in Fig. 4 (c), form mark 22 and background parts 21 in the marked region 20 in same plane; Form the surface of mark 22 through asperities 22a; Form the surface of background portion 21 through minute surface, around mark 22 (literal), stria 23 is set, to divide both, through making the marked region 22a that constitutes by minute surface between the shade that forms by stria 23; Can make its background portion that seems with respect to constitute 21 outstanding, can stress mark 22 by minute surface.
In addition, in the example shown in Fig. 4 (d), form mark 22 and background parts 21 in the marked region 20 in same plane; Form the surface of mark 22 through asperities 22a; Form the surface of background portion 21 through minute surface, prominent bar 24 is set, around mark 22 (literal), can have the identical effect of situation with above-mentioned Fig. 4 (c) to divide both; And, prominent bar 24 can form marked region 20 protective effect, improve anti-traumatic.
In addition; In the example shown in Fig. 4 (e), marked region 20 more forms to the concave plane that tire direction of principal axis inboard is arranged with through the surface than sidewall 3, and mark 22 green phases form for the concave surface that background portion 21 further is arranged with; Its surface element 22a is made up of asperities, and background portion 21 is made up of minute surface.
According to said structure; Through mark 22 is formed sunk embossment literal; In the marked region 20 that the labeled surface 22a that is made up of asperities is sunk to constitute by minute surface, give impression with degree of depth; Can stress the glossiness of background portion 21, improve the visual identification of mark 22, and can make labeled surface 22a be difficult to receive wound more.
[the 3rd embodiment]
Fig. 5 is the block diagram of tire semi-section, the sidewall surfaces of air-inflation tyre T3 of expression third embodiment of the invention, and Fig. 6 is the part sectional view of the X-X line in Fig. 5, Figure 10 is the part sectional view of the Y-Y line in Fig. 5.In Fig. 6,10, for convenience's sake, the curved surface of sidewall surfaces is launched into the plane representes.
Tire T3 is made up of fetus face 2, side wall portion 3 and tyre beads portion 4, and said side wall portion 3 extends to the tire radius direction outside from the two ends of fetus face 2; Said tyre beads portion 4 is connected with the outer end of this side wall portion 3 and is fixed on the wheel rim bead.In this example, illustration riding Vehicular radial ply tyre, this radial-ply tyre has linear configuration carcass 6, belt 7, band enhancement Layer 8, said linear configuration carcass 6 turns back and fastening carcass folded end around tyre beads core 5; Said belt 7 is configured in fetus face 2 peripheries of this carcass 6; Said band enhancement Layer 8 is wound on the periphery of belt 7.
Be arranged in parallel at the outside face of the side wall portion 3 of tire T3 and be formed with a plurality of recessed 111, said a plurality of recessed 111 Zhou Fangxiang at side wall portion 3 extend continuously.In Fig. 5, near the tire maximum width, carve the mark of establishing by text line (TOYO) expression 110, classify the center as with this literal and be provided with 8 recessed 111.
As shown in Figure 6; Recessed 111 inner face is formed with curve 112; And the bottom surface sections of this curve 112 is that the minute surface of 0.4～1.5 μ m constitutes by arithmetic mean surface roughness (Ra), removes outside face that recessed of said minute surface portion form regional 103b and the said mark 110 of clamping and recessed side wall portion 103a that forms regional 103b and is formed by the asperities that Ra surpasses 1.5 μ m.
At this, recessed side wall portion 103a that forms beyond the regional 103b, its surface texture does not limit especially, can be asperities, can be minute surface yet, but from the eye-catching viewpoint of the minute surface that makes curve 112, is preferably the asperities of object.
Thus, different through recessed 111 curve 112 constituting by minute surface with the official post reflection of light property of recessed that constitutes by the asperities of removing above-mentioned minute surface portion glossiness that forms regional 103b, can improve the aesthetic appearance of side wall portion 3.In addition, can improve its effect through making side wall portion 103a form asperities.
The Ra of above-mentioned minute surface portion is set in the scope of 0.4～1.5 μ m; If Ra less than 0.4 μ m, then reflection of light property will become greatly, demonstrate twinkling tendency, seem to turn white, and reduce aesthetic appearance sometimes on the contrary; In addition; Adhere to from the teeth outwards under the situation of mud, wet goods, though clean easily, through causing little wound to become eye-catching easily with the friction of curb etc.In addition, need on the tire metal paattern, carry out special surface treatment (for example, the electroplating processes of chromium etc.), the tire manufacturing cost rises, and is undesirable.In addition, if Ra surpasses 1.5 μ m, then in surface trickle concavo-convex, can get into the small garbage of dust etc., the dirt of wet goods, and cleaning worsens, when all can not take out dirt, reduction is as the aesthetic appearance of minute surface portion.
In addition, the Ra difference of above-mentioned curve 112 that is made up of minute surface and asperities portion in addition is preferably more than the 1 μ m.If this difference is more than the 1 μ m, then both glossinesses will produce poorly significantly, can improve recessed aesthetic appearance that forms regional 103b effectively, can improve the tire aesthetic appearance thus.
The upper limit of the Ra of this asperities portion has no particular limits, preferably less than 2 μ m.If Ra is more than the 2 μ m, then the surface is with creped, and the concavo-convex change of rubber surface is big, adheres to rubbish etc. thus easily, and ozone resistance worsens, be easy to generate long-time use and the ozone crackle that causes.
In recessed 111; Ra is the minute surface scope of 0.4～1.5 μ m, can be curve 112 integral body, and also can form with the bottom surface of curve 112 is the Rack at center, 40～90% width of for example curve 112; But, be preferably wide cut in order to ensure glossiness.
Above-mentioned recessed 111 Ra can form through the tire-vulcanizing metal paattern, and said tire-vulcanizing metal paattern is provided with the forming face with the surface roughness Ra that equates in fact with the roughness of this surface of tyre.That is, with the Ra of metal paattern be shaped through adding sulphur, with identical in fact Ra transfer printing on outer surface of tire.
The Ra of above-mentioned metal paattern forming face for example can use shot-peening method (シ ヨ Star ト Block ラ ス ト method), mirror ultrafinish method etc. or and adjusts with the known method of these methods etc.
And; Above-mentioned recessed 111 part forms raised line in the metal moulds of tyre side; So apply the lapped finish on metal paattern surface easily, and, the maintaining of grinding again easily etc.; The said grinding again is used to remove the dirts such as mold release that the process tire-vulcanizing is shaped and is deposited in the metal paattern surface, can improve tire production rate and maintenance efficiency.
Recessed 111 shape does not have special qualification; For example be expressed as following scope; That is, be preferably about 0.5～2.0mm, be preferably about 4～30mm as the width W of tire footpath direction with respect to the tire direction of principal axis degree of depth L till bending bottom of sidewall surfaces 3a.
If above-mentioned degree of depth L not enough 0.5mm, then recessed 111 bottom will be easily contacts, forms easily scratch with curb etc., if above 2.0mm, then recessed bottom will concentrate apply repeatedly under steam side wall portion 3 on stress, be easy to generate crackle.In addition, if the not enough 4mm of width W, the narrowed width in then forniciform gloss portion zone, the effect that the labeling section area must diminish, improve aesthetic appearance diminishes, if above 30mm, then receives the wound that causes because of curb etc. easily and reduces aesthetic appearance.
Above-mentioned many recessed 111 can arrange same cross sectional shape recessed.In addition, also can random alignment different cross section shape recessed, and, can make recessed degree of depth L or width W radially become big successively or diminish towards tire.
And the border protuberance 113 between recessed 111 is as shown in Figure 6, can protuberance 113 formed the acute angle shape and be provided with recessed 111 continuously, also plane protuberance 113a can as shown in Figure 7ly be set between recessed 111 of arrangement in parallel.In addition, protuberance 113b as shown in Figure 8 is such, can be that more roller tire direction of principal axis is inboard than side wall portion surface 113a with the height setting of protuberance.
Under situation with above-mentioned plane protuberance 113a, 113b, the best less than 0.5 of ratio H/W of recessed 111 width W and the width H of raised part 113a, 113b.If H/W is more than 0.5, then recessed 111 brilliant surface tails off, impairs effect of the present invention.
In addition, protuberance 113c as shown in Figure 9 is such, also can form protuberance, the outside face of side wall portion 3 is formed the concavo-convex of corrugated plate shape through curved surface.
In either case, the bottom surface sections at least of curve 112 is that the minute surface of 0.4～1.5 μ m constitutes by Ra, and curve edge portion beyond the above-mentioned minute surface portion and raised part 113a, 113b, 113c are formed by the asperities that Ra surpasses 1.5 μ m.
And; Recessed 111 structure of having represented to be configured to abreast concentric circles shown in Figure 5 along the Zhou Fangxiang of side wall portion 3; But recessed 111 both can have been disposed (with the rectangular direction of the situation of Fig. 5) along tire footpath direction, also can be with respect to footpath direction tilted configuration.But, be configured with being preferably in the Zhou Fangxiang concentric circles, can be used to remove the maintenance of grinding again etc. of the dirt of metal paattern easily at this Zhou Fangxiang.
Be formed with above-mentioned recessed 111 zone and do not have special qualification; Both can also can be interrupted on the Zhou Fangxiang of side wall portion 3 along full Zhou Lianxu; The tire footpath direction that both can be arranged on sidewall 3 in addition can only be arranged on also that a part goes up, on the display part of for example mark 110 on the whole.
In addition, tire 3 expression has by the literal, numeral, the symbol that show producer's title, brand name, tire size etc., perhaps be used to represent tire hand of rotation, be used to decorate the mark 10 that the figure of the layout etc. of side constitutes.In Fig. 5, mark 110 is as establishing literal quarter and being shown as text line (TOYO).
Above-mentioned mark 110 is shown in Figure 10 (the elevation profile part of literal " O ");, form to the outstanding convex surface that is provided with in the tire outside above-mentioned recessed 111 formation zone 103b portion as a setting for the visual identification that improves mark 110 through the surface that forms regional 113b from this.
The convex surface of above-mentioned mark 110 is formed by the asperities that Ra surpasses 1.5 μ m.Thus, with respect to the minute surface that is formed on recessed 111 the curve 112, mark 110 surfaces that are made up of the different asperities of glossiness seem outstanding, can improve its visual identification.
This mark 110 outstanding is provided with height, can form the height identical with sidewall surfaces 103a according to the kind (literal, design etc.) of tire size or mark, also can be provided with about 0.5～3.0mm from sidewall surfaces 103a is outstanding laterally; But; If surpass 3.0mm, then labeled surface receives wound easily, and; Establish that erecting of portion is easy to generate in the edge portion that stress is concentrated and the crackle that causes is undesirable mark 110 prominent.
In addition, the text line shown in this example " TOYO " has represented not have at the literal circumference literal on the spot of deburring, can certainly but be provided with the literal of deburring.
[the 4th embodiment]
Figure 13 is the tyre side view, representes the 4th embodiment of the present invention, is the sidewall surfaces of air-inflation tyre T4.Figure 14 is the partial enlarged drawing among Figure 13.Figure 15 is the part sectional view of the X-X line in Figure 14.In Figure 14,15, for convenience's sake, the curved surface of sidewall surfaces is launched into the plane representes.
Tire T4 is made up of fetus face 2, side wall portion 3 and tyre beads portion 4, and said side wall portion 3 extends to the tire radius direction outside from the two ends of fetus face 2; Said tyre beads portion 4 is connected with the outer end of this side wall portion 3 and is fixed on the wheel rim bead.
On the outside face of the side wall portion 3 of tire T4, be formed with jog 205, this jog 205 forms with protuberance 220 with the mode alternate repetition configuration recess 210 of adjacency.
In tire T4; The recess 210 of jog 205 and protuberance 220 are made up of row; This is listed in Zhou Fangxiang and alternately arranges paddy portion with identical shaped, same size and mountain portion and form, and protuberance 220 is the chequer that surrounds recess 210, and Zhou Fangxiang is arranged in concentric circles along tire.
Tire T4 forms the paddy shape of recess 210 from the tetrapyamid shape of the reference plane 203a depression setting of side wall portion 3.
In addition, protuberance 220 is made up of the outside face benchmark 203a of portion of side wall portion 3, and protuberance 220 is formed by tabular surface, forms tetragonal highland shape with respect to above-mentioned recess 210.
The size of recess 210 and protuberance 220 has no particular limits, and the Zhou Fangxiang width W is about 0.5～20mm, is preferably 0.5～15mm, and footpath direction height H is about 0.3～15mm, is preferably 0.5～12mm.In addition, its degree of depth (perhaps height) F is about 0.2～5mm, is preferably 0.3～3mm, from tire characteristics and the viewpoint that keeps safety, is desirable like this.
In addition, the formation area of above-mentioned recess 210 preferably account for jog 205 formation zone 20～80%, the situation of expression 50% in Figure 14.If the area ratio of recess 210 is not in 20～80% scope, then minute surface of jog 205 (gloss portion) or asperities (non-brilliant surface) impair the effect that improves sense of vision with lack of equilibrium (Ru partially).
It is the minute surface of 0.4～1.5 μ m that the surface of the inner peripheral surface of above-mentioned recess 210 forms arithmetic mean surface roughness (Ra).This minute surface forms the whole inner peripheral surface zone that the zone can be a recess 210, but also can be that summit 211 with recess 210 is the part at center.Under the situation of minute surface being made a part, can guarantee the glossiness of recess 210, in addition, area be comprise the recess inner peripheral surface on summit 211 long-pending more than 50%, be preferably more than 60%, be 70% or more better.
The Ra of above-mentioned minute surface is set at the scope of 0.4～1.5 μ m, still, if Ra less than 0.4 μ m; That then reflection of light property will become will be excessive, twinkling tendency is arranged, seem to turn white; Sometimes reduced aesthetic appearance on the contrary, in addition, adhered to from the teeth outwards under the situation of mud, wet goods; Though clean easily, through causing little wound to become eye-catching easily with the friction of curb etc.In addition, need on the tire metal paattern, carry out special surface treatment (for example, the electroplating processes of chromium etc.), the tire manufacturing cost rises, and is undesirable.In addition,, then in surface trickle concavo-convex, can get into the small garbage of dust etc., the dirt of wet goods, and cleaning worsens, when all can not take out dirt, the reduction aesthetic appearance if Ra surpasses 1.5 μ m.
In addition, comprise the neighboring area of the protuberance 220 of the minute surface that surrounds above-mentioned recess 210, the asperities that is surpassed 1.5 μ m by Ra constitutes.The difference of the Ra of said minute surface and asperities is best more than the 1 μ m, has variation, improves the sense of vision of side wall portion 3 through the glossiness that makes both, can obtain to improve the effect of tire aesthetic appearance.
If the Ra of this asperities surpasses 5 μ m; Then the surface is with remarkable creped, and the concavo-convex change of rubber surface is big, the easy thus rubbish of invading morely; If adhere to wet goods; Then cleaning will reduce, cause aesthetic appearance to worsen, and also be disadvantageous for ozone resistance, be easy to generate long-time use and the ozone crackle that causes.
The above-mentioned zone that is formed with jog 205 does not have special qualification, both can also can be interrupted on the Zhou Fangxiang of side wall portion 3 along full Zhou Lianxu, and the tire footpath direction that both can be arranged on sidewall 3 in addition also can only be arranged on the part on the whole.
In addition, above-mentioned recess 210 both can be arranged identical shaped structure with protuberance 220 as above-mentioned, also can make up difform structure, both can arrange randomly, also can amplify successively towards tire footpath direction, perhaps reduced size.And jog can alternately be arranged recessed and the raised line that is made up of straight line or curve, but also can the alternate repetition arrange icons such paddy portion of mountain portion, can bring variation, effect better, more satisfactory to light reflective.
The tire of the present invention 4 of said structure, with the mode alternate repetition of adjacency performance minute surface and asperities, thus, the difference through glossiness can make the variation of reflection of light property, improve sense of vision, and the aesthetic appearance of tire is excellent thus.
In addition, on jog 205, representing has by the literal, numeral, the symbol that show producer's title, brand name, tire size etc., perhaps be used to represent tire hand of rotation, be used to decorate the mark that the figure of the layout etc. of side constitutes.
The asperities of the glossiness of above-mentioned recess 210 and protuberance 220 forms through the tire-vulcanizing metal paattern, and said tire-vulcanizing metal paattern is provided with the forming face with the surface roughness Ra that equates in fact with the roughness of this surface of tyre.The Ra of metal paattern forming face for example can use shot-peening method (シ ヨ Star ト Block ラ ス ト method), mirror ultrafinish method etc. or and adjusts with the known method of these methods etc.
And; Above-mentioned recess 210 parts form convex through the metal moulds of tyre side; So implement the lapped finish on metal paattern surface easily, and, the maintaining of grinding again easily etc.; The said grinding again is used to remove the dirts such as mold release that after tire-vulcanizing is shaped use, are deposited in the metal paattern surface, can improve tire production rate and maintenance efficiency.
Below, the recess of jog and the variation 1～4 of protuberance shape are described.
(variation 1)
The recess 212 of jog 206 shown in Figure 16 is arranged with into tetrapyamid shape (dotting crest line 212a, 212b, 212c, the 212d of rectangular pyramid) from sidewall surfaces 203a with above-mentioned jog 205 identically.And protuberance 221 is arranged with into tetrapyamid shape (the crest line 221a, 221b, 221c, the 221d that represent rectangular pyramid with solid line) from sidewall surfaces 203a.Figure 17 representes the section-drawing of the Y-Y line in Figure 16.The Ra that the inner peripheral surface of recess 212 forms the surface is the minute surface of 0.4～1.5 μ m, includes the neighboring area of the protuberance 221 of the minute surface that surrounds recess 212, and the asperities that is surpassed 1.5 μ m by Ra constitutes.
(variation 2)
The recess 213 shown in Figure 180 enlarged drawing of a recess (expression), with above-mentioned jog 205 identically from sidewall surfaces 203a tetrapyamid shape be arranged with recess 213, protuberance forms from sidewall surfaces 203a.As shown in the figure, the summit 214 of rectangular pyramid is positioned at the 213A accentric position, center from recess 213.Thus; The crest line 214a of rectangular pyramid, 214b, 214c, 214d have different length respectively, and the rake of the inner peripheral surface 215a that four limits and the crest line 214a through recess 213,214b, 214c, 214d form, 215b, 215c, 215d has different respectively rakes.
The Ra that the inner peripheral surface of recess 213 forms the surface is the minute surface of 0.4～1.5 μ m, carries out diffuser reflection through making light, can improve sense of vision, further improve the aesthetic appearance of tire.
The summit of the rectangular pyramid of above-mentioned recess 213 can be set in same position in a plurality of recesses 213, also can in each recess 213, be set in different respectively positions.
(variation 3)
In jog shown in Figure 19 207, recess 216 likewise is arranged with into tetrapyamid shape from sidewall surfaces 203a with above-mentioned jog 205, and protuberance 222 forms from sidewall surfaces 203a.As shown in the figure, the area of recess 216 account for jog 207 area 25%.If 20% of the not enough jog 207 of the occupied area of recess 216, then minute surface tails off, reflection of light property is not enough, can not improve the aesthetic appearance of tire.In addition, if the area of recess 216 surpasses 80%, then reflection of light becomes many, and sidewall surfaces has the tendency of dazzling, aesthetic appearance variation.
(variation 4)
In the above-described embodiment; Illustration form the structure of jog through rectangular pyramid; So-called " the squama pattern " that forms but jog shown in Figure 20 208 is the protuberance 223 of the recess 217 of combination triangular pyramid formation and the triangle planar portions that asperities forms; Said triangular pyramid is made up of three minute surfaces, that is, form through plane inclined-plane 217a, 217b, 217c.
The recess, protuberance that form jog be except above-mentioned quadrangle, the triangle, is not limited to regular polygon and scalene shape thereof, rhombus, circle, the ellipse of pentagon, hexagon etc. etc., can also make up a plurality of shapes.
[embodiment]
Below, according to embodiment the present invention is explained particularly, but the present invention is not limited to this embodiment.
(first embodiment)
The Banbury mixer that the use capacity is 200 liters, the sidewall that is made up of following cooperation prescription is carried out hybrid modulation with rubber composition through conventional approach.
[sidewall is used rubber composition]
India rubber (50 weight portions: Thailand makes RSS#3); Butaprene (50 weight portions: the emerging product of space portion (strain) BR150B); Carbon black FEF (60 weight portions: East Sea carbon (strain) シ one ス ト SO); Aromatic oil (10 weight portions: Japanese energy (strain) X-140); Paraffin (2 weight portions: Japanese smart wax (strain) OZOACE-0355); Prevent aging agent 6C (2 weight portions: the emerging chemical frbre industry of imperial palace (strain) ノ Network ラ Star Network 6C); Stearic acid (2 weight portions: flower king's (strain) Le Na Star Network S-20); Zinc oxide (3 weight portions: No. 1, Mitsui Metal Co., Ltd.'s mining industry (strain) flowers of zinc); Sulphur (2 weight portions: thin well chemical frbre industry (strain) 5% oil processing powder sulphur); Vulcanization accelerator NS (1.5 weight portions: the emerging chemical frbre industry of imperial palace (strain) ノ Network セ ラ one NS-P).
The rubber composition that is obtained is applied to side wall portion, trial-production size 45R17 radial-ply tyre.The tire of trial-production uses the sidewall metal mould for formation of steel, with the scope that the Ra of the roughness of surface of the marked region forming face of sidewall adjusts to regulation, respectively manufactures experimently tire with same conditions of vulcanization vulcanization forming through known shot-peening method, mirror ultrafinish method.Marked region is as shown in Figure 1, perhaps is made up of with the background portion of ridge mark literal and no decorative pattern.
Embodiment 1 and comparative example 1,2,4 have the marked region section shown in Fig. 2 (a); Embodiment 2 has the marked region section shown in Fig. 4 (a); The tire of comparative example 2 forms corrugated with the mark literal, and background portion is arranged on marked region in such a way, promptly; Mountain portion is spaced apart 2.5mm, radially makes the angle tilt of the ridge of the triangular cross-section that the linearity parallel extends with 20 degree with respect to tire.In addition, in the tire of comparative example 3, marked region is arranged on the plane of sidewall surfaces, the mark literal is provided with from sidewall surfaces is outstanding.
Measure the surface roughness Ra of the marked region of the tire of manufacturing experimently through following method; Below, the aesthetic appearance when the visual identification through following method evaluation mark, new tire, the aesthetic appearance when the tire real vehicle goes, with aesthetic appearance after curb contact and shine the ozone rotary drum aesthetic appearance after (オ ゾ Application shines the traveling of De ラ system) of going.The result is as shown in table 1.
[surface roughness Ra]
According to the method for JIS B0601, use the accurate contact pin type roughness of surface meter of making " E-35A " in (strain) Tokyo to measure the labeling section of trial-production tire and the arithmetic mean surface roughness Ra of background portion.
[the visual identification of mark]
Please 10 participant's visual observation lower tire side walls.Through the visual identification of 5 method sensory evaluation marks, the mean deviation of getting its result rounds up and is illustrated in the table 1 with integer form.Numerical value is the bigger the better.
[aesthetic appearance during new product]
Use the tire (interior pressure 220kPa) of the wheel rim assembling trial-production of JIS regulation, the outward appearance of Visual Confirmation side wall portion is carried out sensory evaluation through 5 methods.Numerical value is the bigger the better.
[aesthetic appearance after real vehicle goes]
Use the tire (interior pressure 220kPa) of the wheel rim assembling trial-production of JIS regulation; The Japan that is installed to discharge capacity and is 2500cc produces on the manned vehicle, on the Ordinary road that is made up of dried asphalt surface the real vehicle 3000km that goes; The outward appearance of visual observation marked region is carried out sensory evaluation through 5 methods then.Numerical value is the bigger the better.
[with the aesthetic appearance after curb contacts]
Use the tire (interior pressure 220kPa) of the wheel rim assembling trial-production of JIS regulation; Being installed to discharge capacity is on Japan's product manned vehicle of 2500cc; Make the front tyre contact with respect to the curb of cement concrete system, the entering angle of spending with the speed, 5 of 5km/h; The outward appearance of the marked region when Visual Confirmation has moved 50cm is then carried out sensory evaluation through 5 methods.Numerical value is the bigger the better.
[aesthetic appearance after irradiation ozone rotary drum goes]
Use the tire (interior pressure 220kPa) of the wheel rim assembling trial-production of JIS regulation; Carry the JIS peak load; At ozone concentration is that 80pphm and temperature are to use drum tester to carry out going of three weeks with speed per hour 30km/h in 38 ℃ the environment; Then, the ozone line of visual observation marked region splits the generation state, carries out sensory evaluation through 5 methods.Numerical value is the bigger the better.
Table 1
| Comparative example 1 | Comparative example 2 | Comparative example 3 | Embodiment 1 | |
Comparative example 4 | |
| Marked region | ||||||
| Mark (literal) | The wrinkle face | The wrinkle face | Minute surface | Minute surface | Asperities | Minute surface |
| The same Ra (μ m) | 2.0 | 2.0 | 0.5 | 0.5 | 1.7 | 0.6 |
| Background portion (no decorative pattern) | Wrinkle | Ridge | Asperities | Asperities | Minute surface | Asperities |
| The same Ra (μ m) | 2.0 | 2.0 | 1.7 | 1.7 | 0.5 | 2.0 |
| The degree of depth of marked region (mm) | 1.0 | 1.0 | 0 | 1.0 | 1.0 | 1.0 |
| The width of marked region (mm) | 50 | 30 | 30 | 30 | 30 | 30 |
| Reference diagram | Fig. 2 (a) | Fig. 2 (a) | - | Fig. 2 (a) | Fig. 4 (a) | Fig. 2 (a) |
| The visual identification of |
2 | 4 | 3 | 5 | 5 | 5 |
| Aesthetic appearance after going | 2 | 1 | 4 | 4 | 4 | 4 |
| With the aesthetic appearance after |
2 | 4 | 1 | 5 | 5 | 5 |
| Aesthetic appearance behind the |
2 | 4 | 4 | 4 | 4 | 2 |
Shown in the result of table 1; The tire of embodiments of the invention 1, the 2 not only visual identification of mark is excellent, and marked region is difficult to adhere to the dirt that goes and produce because of real vehicle, and; Be difficult to receive the wound of scratch of causing because of curb etc.; Through on existing wrinkle face (comparative example 1), reducing roughness of surface, can improve the crackle of anti-ozone property, through improving the visual identification that this outward appearance can well keep mark chronically.
(the 2nd embodiment)
Specification according to table 2 is put down in writing is manufactured experimently the radial-ply tyre that is of a size of 225/45R17; In this radial-ply tyre; Above-mentioned sidewall is used for side wall portion with rubber composition; Be provided with along the Zhou Fangxiang of side wall portion shown in Figure 5 have Fig. 6,8 recessed of the section shape shown in 7, in this recessed zone, have mark literal (TOYO).The tire of trial-production uses the sidewall metal mould for formation of steel; Adjust the roughness of surface of the marked region forming face of sidewall through known shot-peening method (シ ヨ Star ト Block ラ ス ト method), mirror ultrafinish method; The Ra of the sidewall outside face beyond recessed curve (90% width regions) and the curve is adjusted to the scope of regulation; Respectively manufacture experimently tire through same conditions of vulcanization sulfuration formation, form minute surface and wrinkle face (asperities).In addition, mountain portion shown in Figure 11 forms, the surface is formed the wrinkle face through the existing ridge 14 of 2.0mm at interval in comparative example 5; In comparative example 6, the sidewall outside face is formed the wrinkle face, the mark literal is begun the outstanding height of being arranged to 1mm from side surface; In comparative example 10, form the concavo-convex of concave shape 115 and convex shape 116, recessed bottom surface formed minute surface recessed shown in Figure 12.
Measure the surface roughness Ra of asperities portion (comprising mark) of minute surface portion and side wall portion outside face of the tire of trial-production through said method; Below, visual identification, the tire real vehicle through the said method evaluation mark go the back, contact back with curb and shines the aesthetic appearance after the ozone rotary drum goes.The result is illustrated in the table 2.
Table 2
| Comparative example 5 | Comparative example 6 | Comparative example 7 | Comparative example 8 | Comparative example 9 | Comparative example 10 | |
|
|
| Recessed | ||||||||
| Recessed strip | Ridge | Do not have | Crooked | Crooked | Crooked | Concave shape | Crooked | Crooked |
| Surface texture | The wrinkle face | The wrinkle face | Minute surface | Minute surface | The wrinkle face | Minute surface | Minute surface | Minute surface |
| The same Ra (μ m) | 2.0 | 2.0 | 0.5 | 0.5 | 2.0 | 0.5 | 0.5 | 0.5 |
| The same degree of depth (mm) | 1.0 | - | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| The same width (mm) | 2 | - | 5 | 40 | 5 | 5 | 5 | 5 |
| Protuberance width (mm) | 0 | - | 0 | 0 | 0 | 2 | 0 | 2 |
| Sidepiece, mark beyond recessed | ||||||||
| Surface texture | The wrinkle face | The wrinkle face | Minute surface | The wrinkle face | Minute surface | The wrinkle face | The wrinkle face | The wrinkle face |
| The same Ra (μ m) | 2.0 | 2.0 | 0.5 | 2.0 | 0.5 | 2.0 | 2.0 | 2.0 |
| Reference diagram | Figure 11 | - | Fig. 6 | Fig. 6 | Fig. 6 | Figure 12 | Fig. 6 | Fig. 7 |
| The visual identification of |
4 | 2 | 2 | 5 | 4 | 4 | 5 | 5 |
| Aesthetic appearance after going | 1 | 2 | 4 | 4 | 4 | 3 | 4 | 4 |
| With the aesthetic appearance after |
4 | 2 | 2 | 2 | 2 | 5 | 5 | 5 |
| Aesthetic appearance behind the |
3 | 3 | 4 | 4 | 4 | 3 | 4 | 4 |
Shown in the result of table 2; The tire of embodiments of the invention 3, the 4 not only visual identification of mark is excellent, and marked region is difficult to adhere to the dirt that goes and produce because of real vehicle, and; Be difficult to receive the wound of scratch of causing because of curb etc.; Through on existing ridge or wrinkle face, reducing roughness of surface, can improve the crackle of anti-ozone property, through improving the visual identification that this aesthetic appearance can well keep mark chronically.In addition, through forming bending with recessed, with respect to improving the visual identification of mark by recessed comparative example that constitutes 10 of concave shape and the back of going, the irradiation ozone aesthetic appearance after going.
(the 3rd embodiment)
Specification according to table 3 is put down in writing is manufactured experimently the radial-ply tyre that is of a size of 225/45R17, in this radial-ply tyre, above-mentioned sidewall is used for side wall portion with rubber composition, is formed with the jog of check design pattern-like along the Zhou Fangxiang of side wall portion shown in Figure 13.The tire of trial-production uses the sidewall metal mould for formation of steel; Through known shot-peening method (シ ヨ Star ト Block ラ ス ト method), mirror ultrafinish method the roughness of surface of side wall portion is adjusted to the Ra of the specialized range that is formed with minute surface and asperities (wrinkle face), respectively manufacture experimently tire through same conditions of vulcanization vulcanization forming.In addition, the whole face of the inner peripheral surface of recess is formed minute surface.The existing tire of side wall portion that in comparative example 11, does not have jog for constituting by the wrinkle facial plane.
Tire aesthetic appearance when measuring surface roughness Ra, the new product of minute surface portion and in addition asperities portion of tire of trial-production through said method and tire real vehicle go the back, contact with curb after, shine the aesthetic appearance after the ozone rotary drum goes.Tire aesthetic appearance during through the said method evaluation of new product.The result is illustrated in the table 3.
Table 3
| Comparative example 11 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Comparative example 12 | Comparative example 13 | Comparative example 14 | |
| Recess | Do not have | ||||||||
| Recess shapes | The plane | Rectangular pyramid | Rectangular pyramid | Rectangular pyramid | Rectangular pyramid | Triangular pyramid | Rectangular pyramid | Rectangular pyramid | Rectangular pyramid |
| Surface texture | The wrinkle face | Minute surface | Minute surface | Minute surface | Minute surface | Minute surface | The wrinkle face | The wrinkle face | Minute surface |
| The same Ra (μ m) | 2.0 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 2.0 | 2.0 | 0.5 |
| The same summit degree of depth (mm) | - | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| The same width (mm) | - | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| The same height (mm) | - | 10 | 10 | 10 | 10 | 5 | 10 | 10 | 10 |
| The position on summit | - | The center | The center | Eccentric | The center | The center | The center | The center | The center |
| Occupied area (%) | - | 50 | 50 | 50 | 75 | 50 | 50 | 50 | 15 |
| Protuberance | Do not have | ||||||||
| The protuberance shape | The plane | The plane | Rectangular pyramid | The plane | The plane | The plane | The plane | The plane | The plane |
| Surface texture | The wrinkle face | The wrinkle face | The wrinkle face | The wrinkle face | The wrinkle face | The wrinkle face | The wrinkle face | Minute surface | The wrinkle face |
| The same Ra (μ m) | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 0.5 | 2.0 |
| The same apex height (mm) | - | - | 0.5 | - | - | - | - | - | - |
| The same width (mm) | - | - | 10 | - | - | - | - | - | - |
| The same height (mm) | - | - | 10 | - | - | - | - | - | - |
| Reference diagram | - | Figure 14 | Figure 16 | Figure 18 | Figure 19 | Figure 20 | Figure 14 | Figure 14 | Figure 19 |
| Aesthetic appearance during new product | 2 | 4 | 5 | 5 | 5 | 4 | 3 | 4 | 3 |
| Aesthetic appearance after going | 2 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 |
| With the aesthetic appearance after curb contacts | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 |
| Aesthetic appearance behind the irradiation ozone | 3 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 4 |
Shown in the result of table 3; The tire of embodiments of the invention 5～9 not only aesthetic appearance during new product is excellent; And be difficult to adhere to the dirt that goes and produce because of real vehicle, and, be difficult to receive the wound of scratch of causing because of curb etc.; The crackle of anti-ozone property can be further improved, aesthetic appearance can be kept for a long time well.
Pneumatic tires according to the present invention; Glossiness through making the mark that is illustrated in side wall portion and its background portion produces difference; Can make mark give prominence to, make visual identification excellent, and can prevent that mark from adhering to rubbish, dirt, is difficult to receive wound; And then can improve ozone resistance, the long-term aesthetic appearance that keeps tire well, and the long-term effect that keeps the visual identification of raising mark.In addition, the maintenance of grinding etc. of the mark forming face of metal paattern can be carried out easily, tire production rate or maintenance efficiency can be improved.
In addition; Through making minute surface with the bottom of recessed of a plurality of bendings of sidepiece arrangement in parallel; Raised line beyond it is formed the zone make asperities, can make gloss portion and non-gloss portion alternately be apparent on the exterior side surface, stress the visual identification of sidepiece, and can prevent that rubbish, dirt are attached on the minute surface; Be difficult to receive wound, and then can improve ozone resistance, the long-term aesthetic appearance that keeps tire well.Through forming the zone at this recessed mark is set, the background of this literal becomes minute surface decorates, and can improve the visual identification of mark, can keep this effect for a long time.
In addition, air-inflation tyre of the present invention in being formed at the jog of side wall portion, increases the glossiness of recess, thus, changes through the light reflective that makes jog and can improve visual identification, can improve the aesthetic appearance of tire.In addition; Through jog being formed the check design pattern; Or the glossiness that the inner peripheral surface rake that makes recess has variation, makes recess and surrounds the neighboring area of this recess has difference, can strengthen reflexive variation, further strengthen improving the effect of aesthetic appearance.In addition, the vulcanization forming of tire of the present invention with metal paattern in, the recess forming section of above-mentioned sidepiece forms concavity, carries out its mirror ultrafinish processing easily, and the maintenance of grinding again after using easily etc., can improve tire production rate, maintenance efficiency.
The present invention goes for using the various sizes such as giant tire that light-duty truck, city motor bus or truck as representative use, the air-inflation tyre of purposes with manned vehicle.
Claims (2)
1. an air-inflation tyre is characterized in that, the part of the sidewall outside face of tire is provided with minute surface portion and asperities portion, and the arithmetic mean surface roughness (Ra) of said minute surface portion has the roughness of surface of 0.4～1.5 μ m; The Ra of said asperities portion surpasses 1.5 μ m,
Sidewall is provided with in the air-inflation tyre of mark, comprises that the marked region of the background portion of above-mentioned mark and this mark is formed on than the above-mentioned sidewall outside face inboard position of roller tire direction of principal axis more through concave surface,
Above-mentioned marked region is 0.5～3.0mm with respect to the axial degree of depth of the tire of sidewall outside face,
The surface of above-mentioned mark is an above-mentioned minute surface portion, and the background portion of above-mentioned mark is an asperities portion,
Above-mentioned mark is formed by convex surface, and said convex surface is provided with from the marked region that forms above-mentioned concave surface is outstanding,
The minute surface portion of above-mentioned mark more is in the axial inboard of tire than other the sidewall outside face that surrounds above-mentioned marked region.
2. air-inflation tyre as claimed in claim 1 is characterized in that, the difference of the Ra of said minute surface portion and asperities portion is more than the 1 μ m.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007042830A JP2008201384A (en) | 2007-02-22 | 2007-02-22 | Pneumatic tire |
| JP2007-042830 | 2007-02-22 | ||
| JP2007042830 | 2007-02-22 | ||
| JP2007097105 | 2007-04-03 | ||
| JP2007-097105 | 2007-04-03 | ||
| JP2007097105A JP5026840B2 (en) | 2007-04-03 | 2007-04-03 | Pneumatic tire |
| JP2007099176 | 2007-04-05 | ||
| JP2007099176 | 2007-04-05 | ||
| JP2007-099176 | 2007-04-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101249780A CN101249780A (en) | 2008-08-27 |
| CN101249780B true CN101249780B (en) | 2012-05-23 |
Family
ID=39779300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100808662A Expired - Fee Related CN101249780B (en) | 2007-02-22 | 2008-02-22 | Inflatable pneumatic tyre |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2008201384A (en) |
| CN (1) | CN101249780B (en) |
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| US9393719B2 (en) | 2010-03-26 | 2016-07-19 | Bridgestone Corporation | Pneumatic tire with specified outer surface |
| JP4666109B1 (en) * | 2010-05-07 | 2011-04-06 | 横浜ゴム株式会社 | Pneumatic tire |
| JP5630085B2 (en) * | 2010-06-15 | 2014-11-26 | 横浜ゴム株式会社 | Pneumatic tire |
| CN103167963B (en) * | 2010-09-09 | 2015-07-22 | 株式会社普利司通 | Tire |
| JP5725279B2 (en) * | 2010-11-12 | 2015-05-27 | 横浜ゴム株式会社 | Pneumatic tire and its vulcanization mold |
| JP5494518B2 (en) * | 2011-02-07 | 2014-05-14 | 横浜ゴム株式会社 | Pneumatic tire |
| FR2973286B1 (en) * | 2011-03-31 | 2013-08-16 | Michelin Soc Tech | HIGH CONTRAST PNEUMATIC PATTERN |
| JP5310805B2 (en) * | 2011-08-03 | 2013-10-09 | 横浜ゴム株式会社 | Pneumatic tire |
| JP5747826B2 (en) * | 2012-01-11 | 2015-07-15 | 横浜ゴム株式会社 | Pneumatic tire |
| JP5793159B2 (en) * | 2013-03-19 | 2015-10-14 | 住友ゴム工業株式会社 | Pneumatic tire |
| FR3007324B1 (en) * | 2013-06-20 | 2015-07-17 | Michelin & Cie | PNEUMATIC COMPRISING A HIGH CONTRAST MARKING |
| FR3007325B1 (en) * | 2013-06-21 | 2016-02-12 | Michelin & Cie | PNEUMATIC COMPRISING A HIGH CONTRAST MARKING |
| US9827724B2 (en) * | 2013-09-17 | 2017-11-28 | Bridgestone Americas Tire Operations, Llc | Tire structure for externally mounted device |
| FR3014023B1 (en) * | 2013-11-29 | 2017-02-24 | Michelin & Cie | PNEUMATIC COMPRISING A DEFECT MASKING PATTERN ON A FLANK |
| FR3020594B1 (en) * | 2014-04-30 | 2018-01-05 | Compagnie Generale Des Etablissements Michelin | PNEUMATIC COMPRISING A MATRIX SYMBOL WITH HIGH CONTRAST ON THE FLANK |
| JP6257438B2 (en) * | 2014-05-08 | 2018-01-10 | 東洋ゴム工業株式会社 | Pneumatic tire |
| JP6759903B2 (en) * | 2016-09-09 | 2020-09-23 | 住友ゴム工業株式会社 | Heavy load tires |
| JP6220036B1 (en) * | 2016-11-30 | 2017-10-25 | 株式会社バンダイ | Model toy |
| JP2019104386A (en) * | 2017-12-12 | 2019-06-27 | 株式会社ブリヂストン | Decorative body |
| JP2019104385A (en) * | 2017-12-12 | 2019-06-27 | 株式会社ブリヂストン | Decorative body |
| JP7057125B2 (en) * | 2017-12-22 | 2022-04-19 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Pneumatic tires |
| CN108407348B (en) * | 2018-03-16 | 2020-04-24 | 山东豪迈机械科技股份有限公司 | Tire and tire mould with novel side wall decorative pattern |
| JP7119766B2 (en) * | 2018-08-23 | 2022-08-17 | 住友ゴム工業株式会社 | tire |
| WO2020166205A1 (en) * | 2019-02-14 | 2020-08-20 | 住友電気工業株式会社 | Multi-core cable for vehicle, and method for manufacturing multi-core cable for vehicle |
| DE102019207908A1 (en) * | 2019-05-29 | 2020-12-03 | Continental Reifen Deutschland Gmbh | Pneumatic vehicle tires |
| JP7124807B2 (en) * | 2019-08-05 | 2022-08-24 | 横浜ゴム株式会社 | pneumatic tire |
| JP7207224B2 (en) * | 2019-08-05 | 2023-01-18 | 横浜ゴム株式会社 | pneumatic tire |
| JP7230731B2 (en) * | 2019-08-05 | 2023-03-01 | 横浜ゴム株式会社 | pneumatic tire |
| DE112020002898T5 (en) * | 2019-08-05 | 2022-02-24 | The Yokohama Rubber Co., Ltd. | tire |
| DE102019213874A1 (en) * | 2019-09-11 | 2021-03-11 | Continental Reifen Deutschland Gmbh | Combined manufacturing process for a molding tool for shaping vulcanization of vehicle tires and vehicle tires |
| JP2021054396A (en) * | 2019-09-30 | 2021-04-08 | 住友ゴム工業株式会社 | tire |
| JP7088155B2 (en) * | 2019-10-08 | 2022-06-21 | 横浜ゴム株式会社 | Pneumatic tires |
| CN110774494B (en) * | 2019-10-25 | 2021-12-31 | 安徽佳通乘用子午线轮胎有限公司 | Tire mold and processing method thereof, tire vulcanization method and tire |
| CN113415110A (en) * | 2021-07-09 | 2021-09-21 | 双钱集团上海轮胎研究所有限公司 | Tyre for vehicle |
| TWI819741B (en) * | 2022-08-09 | 2023-10-21 | 正新橡膠工業股份有限公司 | Tire and its structure for enhancing visual contrast of tire edge |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2008201384A (en) | 2008-09-04 |
| CN101249780A (en) | 2008-08-27 |
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