CN204506361U - Air-inflation tyre - Google Patents
Air-inflation tyre Download PDFInfo
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- CN204506361U CN204506361U CN201520138343.4U CN201520138343U CN204506361U CN 204506361 U CN204506361 U CN 204506361U CN 201520138343 U CN201520138343 U CN 201520138343U CN 204506361 U CN204506361 U CN 204506361U
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- width direction
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- pit part
- tread
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Abstract
The purpose of this utility model is to provide a kind of air-inflation tyre that improve driving stability.Of the present utility modelly airtyredly to be characterised in that, tread surface has and divides by the circumferential major trough of one or more extended continuously along tyre surface circumference and tyre surface end the multiple grounding parts formed, the maximum width grounding parts that the width in the tread width direction in described multiple grounding parts is the widest has composite slot portion, this composite slot portion has the 1st pit part, 2nd pit part and be communicated with the interconnecting part of described 1st pit part and described 2nd pit part, described maximum width grounding parts is formed the 1st bight folded by described 1st pit part and described interconnecting part and the 2nd bight folded by described 2nd pit part and described interconnecting part.The utility model obtains the effect improving driving stability.
Description
Technical field
The utility model relates to a kind of air-inflation tyre.
Background technology
In the past, in air-inflation tyre, in order to improve the rideability on dry and comfortable road surface when running at high speed, have employed the rigidity of the grounding parts improved outside when vehicle is installed, expand the width of the tire width direction of the grounding parts outside when vehicle is installed or reduce the method (for example, referring to patent documentation 1) such as pattern groove and pattern block area ratio.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2013-189067 publication
Utility model content
The problem that utility model will solve
But, in the air-inflation tyre described in patent documentation 1, ground pressure outside turning during owing to turning increases, therefore the most ground pressure of turning medial reduces relatively, sometimes cannot obtain driving stability fully, particularly there is the leeway of driving stability when running at high speed.
The utility model to solve above-mentioned this problem, its object is to provide a kind of air-inflation tyre that improve driving stability.
For the scheme of dealing with problems
Purport structure of the present utility model is as described below.
Of the present utility modelly airtyredly to be characterised in that having in tread surface and divide by the circumferential major trough of one or more extended continuously along tyre surface circumference and tyre surface end the multiple grounding parts formed,
The maximum width grounding parts that the width in the tread width direction in described multiple grounding parts is the widest has composite slot portion, and this composite slot portion has the 1st pit part, the 2nd pit part and is communicated with the interconnecting part of described 1st pit part and described 2nd pit part,
Described maximum width grounding parts is formed the 1st bight folded by described 1st pit part and described interconnecting part and the 2nd bight folded by described 2nd pit part and described interconnecting part.
According to this structure, driving stability can be improved.
At this, " ground plane of tyre surface " refer to make to be assembled in be suitable for wheel rim and the tire being filled with pressure in regulation to be applied with the state rolling of the load corresponding with maximum load capability time, the outer peripheral face of tire complete cycle that contacts with road surface.In addition at this, " being suitable for wheel rim " refer to tire size correspondingly in following standard the standard rim of defined (be defined as in the YEAR BOOK of following TRA " designing wheel rim (Design Rim) ".Be defined as in the STANDARDS MANUAL of following ETRTO " measuring wheel rim (Measuring Rim) ".), " in regulation pressure " refers to the air pressure that specify corresponding to maximum load capability in following standard, and " maximum load capability " refers to that allowable load is in the biggest quality of tire in following standard.And, this standard refers to the standard determined by actv. industry standards in the region of tire production, use, such as, at " YEAR BOOK " that the United States of America is " The Tire and Rim Association; Inc. (TRA) ", being " the STANDARDS MANUAL " of " The European Tyre and Rim TechnicalOrganization (ETRTO) " in Europe, is " the JATMA YEAR BOOK " of " Japanese car tire association (JATMA) " in Japan.
And " tyre surface end " refers to the tread width direction outermost locations of above-mentioned tread surface.
In addition, in air-inflation tyre of the present utility model, preferably, described maximum width grounding parts is the outermost grounding parts in tread width direction.
According to this structure, forming above-mentioned composite slot portion to the most actv. region of turning performance, more effectively driving stability can be improved.
And in air-inflation tyre of the present utility model, preferably, described 1st bight and described 2nd bight are acute angle.
According to this structure, can ground connection property be improved, further improve driving stability.
And then in addition, in air-inflation tyre of the present utility model, preferably, the groove depth of described interconnecting part is greater than the groove depth of described 1st pit part and described 2nd pit part.
According to this structure, contribute to the distortion in composite slot portion, and can driving stability be improved.
At this, " groove depth " refers to the extreme depth of interconnecting part, the 1st pit part and the 2nd pit part.
In addition, in air-inflation tyre of the present utility model, preferably, described interconnecting part is the stria extended along tread width direction.
According to this structure, can ground contact area be guaranteed, improve driving stability further.
In addition, " stria " refer to tire is installed on be suitable for wheel rim and fill in regulation press and under non-loaded state, its groove width (groove width in tread surface upper shed) is less than the groove of the groove width (groove width in tread surface upper shed) of above-mentioned " circumferential major trough ".In addition, in this manual, " groove width ", " groove depth " described later refer to air-inflation tyre to be installed on and are suitable for wheel rim and fill pressure in regulation and value under non-loaded state.
In addition, in air-inflation tyre of the present utility model, preferably, described composite slot portion is configured in center, tread width direction than described maximum width grounding parts by the position inside tread width direction.
According to this structure, more effectively driving stability can be improved.
At this, " be configured in center, tread width direction by the position inside tread width direction " than maximum width grounding parts refers to that more than 80% of the groove area in above-mentioned composite slot portion is configured in center, tread width direction than maximum width grounding parts by the position inside tread width direction.
And in air-inflation tyre of the present utility model, preferably, described maximum width grounding parts is ribbed grounding parts.This is because the rigidity of grounding parts can be guaranteed and guarantee driving stability.In addition, refer at this said " ribbed grounding parts " and do not blocked the grounding parts into decorative pattern bulk by groove, tire sipe.
The effect of utility model
According to the utility model, a kind of air-inflation tyre that improve driving stability can be provided.
Accompanying drawing explanation
Fig. 1 is the expansion drawing of the airtyred tread contour representing the 1st embodiment of the present utility model.
Fig. 2 is the expansion drawing of the airtyred tread contour representing the 2nd embodiment of the present utility model.
Fig. 3 (a) ~ Fig. 3 (d) is the cutaway view of the shape representing circumferential major trough.
Description of reference numerals
1 tread surface; 2,2a, 2b circumference major trough; 2c, 2d conical section; 3,3a, 3b, 3c grounding parts; 4 composite slot portions; 4a the 1st pit part; 4b the 2nd pit part; 4c interconnecting part; 4d the 1st bight; 4e the 2nd bight; 4f the 3rd bight; 4g the 4th bight; 4h, 4i conical section; 5 recesses; 6 Width grooves; 7 recesses; 8 pits; 9 Width grooves; CL tire equator face; TE tyre surface end.
Detailed description of the invention
Below, embodiment of the present utility model is illustrated in detail with reference to accompanying drawing.
Fig. 1, Fig. 2 represent that the air-inflation tyre of the of the present utility model 1st and the 2nd embodiment is (following, also referred to as tire) the expansion drawing of tread contour, be suitable for wheel rim to tire is installed on and fills pressure in regulation and tread surface under no-load condition carries out the figure that launches to represent.
< the 1st embodiment >
First, with reference to Fig. 1, the 1st embodiment of the present utility model is described.As shown in Figure 1, the tire of the 1st embodiment of the present utility model has (being two articles in illustrated example) the circumferential major trough 2 (2a, 2b) of one or more extended continuously along tyre surface circumference in tread surface 1.Utilize these circumferential major troughs 2, the drainage of tire can be guaranteed.
In the example depicted in figure 1, two tread width direction half portion that circumferential major trough 2 is being border with tire equator face CL are respectively provided with one, and a circumferential major trough 2a is located at than another circumferential major trough 2b near the position of tire equator face CL.
In addition, as shown in Figure 1, utilize these two circumferential major troughs 2 to divide with tyre surface end TE and be formed with multiple grounding parts 3.Specifically, utilize circumferential major trough 2a and tyre surface end TE, divide the tread width direction outermost grounding parts 3a being formed with and being positioned at the half portion of the tire equator face CL side, tread width direction that is border, utilize circumferential major trough 2a and circumferential major trough 2b, divide the grounding parts 3b being formed with and being positioned in illustrated example on the CL of tire equator face, and, utilize circumferential major trough 2b and tyre surface end TE, divide the tread width direction outermost grounding parts 3c being formed with and being positioned at the half portion of the tire equator face CL tread width direction opposite side that is border.
In illustrated example, be positioned at the width in the tread width direction of the tread width direction outermost grounding parts 3a of the half portion of the tire equator face CL side, tread width direction that is border the widest, then, be positioned at the wider width in the tread width direction of the tread width direction outermost grounding parts 3c of the half portion of the tire equator face CL tread width direction opposite side that is border, the width being clipped in the tread width direction of two circumferential grounding parts 3b between major trough 2a, 2b is minimum.
In addition, as shown in Figure 1, these grounding parts 3a, 3b, 3c is ribbed grounding parts.
At this, as shown in Figure 1, the maximum width grounding parts 3a that the width in the tread width direction of this tire in multiple grounding parts 3 is the widest has multiple (being two in graphic scope) composite slot portion 4, and this composite slot portion 4 has the 1st pit part 4a, the 2nd pit part 4b and is communicated with the interconnecting part 4c of the 1st pit part 4a and the 2nd pit part 4b.
In illustrated example, the 1st pit part 4a makes groove width narrow from the end of the side of tyre surface circumference towards the end of opposite side and extend along tyre surface circumference, and the 1st pit part 4a is formed as the shape of overlooking roughly triangular shape.On the other hand, in illustrated example, the 2nd pit part 4b makes groove width broaden from the end of the side of tyre surface circumference towards the end of opposite side and extend along tyre surface circumference, and the 2nd pit part 4b is formed as the shape of overlooking roughly triangular shape.
In the example depicted in figure 1, the 1st pit part 4a and the 2nd pit part 4b separate configuration in tyre surface circumference and tread width direction.
And, in the example depicted in figure 1, utilize the interconnecting part 4c extended along tread width, be communicated with the 1st pit part 4a and the 2nd pit part 4b of separate configuration described above, these parts compounds and define composite slot portion 4.In illustrated example, this composite slot portion 4 is formed as overlooking the shape of roughly Z-shaped.
And, as shown in Figure 1, owing to being formed with composite slot portion 4 on maximum width grounding parts 3a, therefore the 2nd bight 4e being formed with the 1st bight 4d folded by the 1st pit part 4a and interconnecting part 4c and being folded by the 2nd pit part 4b and interconnecting part 4c on maximum width grounding parts 3a, in illustrated example, these the 1st bight 4d and the 2nd bight 4e are acute angle, and the 1st bight 4d is positioned at across connectivity slot 4c the relative position that mutually tilts with the 2nd bight 4e.
As shown in Figure 1, composite slot portion 4 is only located at maximum width grounding parts 3a.
Like this, the feature of the tire of the 1st embodiment of the present utility model is, maximum width grounding parts 3a has composite slot portion 4, this composite slot portion 4 has the 1st pit part 4a, the 2nd pit part 4b and is communicated with the interconnecting part 4c of the 1st pit part 4a and the 2nd pit part 4b, and maximum width grounding parts 3a is formed the 1st bight 4d folded by the 1st pit part 4a and interconnecting part 4c and the 2nd bight 4e folded by the 2nd pit part 4b and interconnecting part 4c.
Below, for the tire of the 1st embodiment, action effect when being arranged on vehicle by tire in the maximum width grounding parts 3a mode become outside when vehicle is installed is described.
Although by arranging groove to the rigidity relaxing grounding parts and to improve ground connection property be actv., in order to reduce the rigidity of grounding parts fully and improve ground connection property, need also to increase groove area, ground contact area reduces.Therefore, even if ground connection property improves sometimes, ground contact area also reduces, and also cannot improve driving stability fully.
On the other hand, according to the tire of the 1st embodiment of the present utility model, owing to there is composite slot portion 4 on maximum width grounding parts 3a, and be formed as above-mentioned 1st bight 4d and the 2nd bight 4e and be positioned at across connectivity slot 4c the relative position that mutually tilts, therefore the rigidity near the 1st bight 4d and the 2nd bight 4e is lower, this part is relative to transverse force when turning, fore-and-aft direction power when tractive force and braking etc. are easy to mobile from the input on road surface, even if the groove area in composite slot portion 4 is less, also the ground pressure of maximum width grounding parts 3a can be relaxed fully, ground pressure is made to be scattered in tread surface 1 overall, improve the ground connection property of tread surface 1 entirety, improve driving stability.Particularly can improve driving stability during turning when running at high speed.
At this, in the utility model, preferably, maximum width grounding parts 3a described above is the outermost grounding parts in tread width direction.This is because, when tire is arranged on vehicle by the mode outside when becoming vehicle with maximum width grounding parts 3a and installing, by forming above-mentioned composite slot portion 4 in the most actv. region of turning performance, more effectively can improve driving stability.
And in the utility model, preferably, the 1st bight 4d described above and the 2nd bight 4e is acute angle.This is because, thus, relative to the input from road surface near the 1st bight 4d and the 2nd bight 4e, be easy to further movement, the ground connection property of tread surface 1 can be improved, further improve driving stability.
In addition, according to the 1st embodiment of the present utility model, because the 1st pit part 4a and the 2nd pit part 4b is formed as the shape of overlooking roughly triangular shape as mentioned above, therefore, it is possible to form above-mentioned 1st bight 4d and above-mentioned 2nd bight 4e and reduce the groove area in composite slot portion 4, and suppress the reduction of ground contact area.Particularly preferably be, the shape of the 1st pit part 4a and the 2nd pit part 4b be along with from interconnecting part 4c away from groove width is attenuated and extend along tyre surface circumference, the shape of overlooking elongated roughly triangular shape, groove area can be set to Min. and obtain above-mentioned effect thus.But in the utility model, the shape of the 1st pit part 4a and the 2nd pit part 4b is not limited to above-mentioned situation, such as, also can be set to overlook rectangular-shaped.
And in the utility model, preferably, the groove depth of interconnecting part 4c is greater than the groove depth of the 1st pit part 4a and the 2nd pit part 4b.This is because grounding parts becomes and is easy to be out of shape towards interconnecting part 4c, therefore contributes to the distortion in composite slot portion 4, can improve driving stability further.
And then in the utility model, preferably, as the 1st embodiment shown in Fig. 1, interconnecting part 4c is the stria extended along tread width direction.This is because, the groove area of stria can be reduced, therefore, it is possible to guarantee ground contact area, improve driving stability further.
In addition, preferably, composite slot portion 4 is configured in center, tread width direction than maximum width grounding parts 3a by the position inside tread width direction.This is because when turning, the ground pressure outside when the ground pressure inside when vehicle is installed is installed lower than vehicle, therefore by improving the ground connection property in this region, can improve driving stability effectively.Consider based on this viewpoint, particularly preferably be, as shown in Figure 1, composite slot portion 4 is integrally provided in center, tread width direction than maximum width grounding parts 3a by the position inside tread width direction.
At this, in the tire of the 1st embodiment shown in Fig. 1, preferably, the development length of above-mentioned 1st pit part 4a and above-mentioned 2nd pit part 4b is set to 3mm ~ 20mm.This is because, by being set to more than 3mm, the rigidity near above-mentioned 1st bight 4d and above-mentioned 2nd bight 4e can being reduced more reliably, on the other hand, by being set to below 20mm, further can guarantee ground contact area.
And preferably, the 1st pit part 4a is set to 1.5mm ~ 20mm with the groove width (width in tread surface 1 upper shed) of the connected component be communicated with interconnecting part 4c of the 2nd pit part 4b.This is because, by being set to more than 1.5mm, the rigidity near above-mentioned 1st bight 4d and above-mentioned 2nd bight 4e can being reduced more reliably, on the other hand, by being set to below 20mm, further can guarantee ground contact area.
In addition, preferably, the groove depth (extreme depth) of the 1st pit part 4a and the 2nd pit part 4b is set to 2mm ~ 7mm.This is because by being set to more than 2mm, can reduce the rigidity near above-mentioned 1st bight 4d and above-mentioned 2nd bight 4e more reliably, on the other hand, by being set to below 7mm, the rigidity of grounding parts can not too reduce.
In addition, in the tire of the 1st embodiment shown in Fig. 1, preferably, the development length of interconnecting part 4c is set to 3mm ~ 20mm.This is because, by being set to more than 3mm, the rigidity near above-mentioned 1st bight 4d and above-mentioned 2nd bight 4e can being reduced more reliably, on the other hand, by being set to below 20mm, further can guarantee ground contact area.
And preferably, the groove width (width in tread surface 1 upper shed) of interconnecting part 4c is set to 2mm ~ 20mm.This is because, by being set to more than 2mm, the rigidity near above-mentioned 1st bight 4d and above-mentioned 2nd bight 4e can being reduced more reliably, on the other hand, by being set to below 20mm, further can guarantee ground contact area.
In addition, preferably, the groove depth (extreme depth) of interconnecting part 4c is set to 2mm ~ 7mm.This is because by being set to more than 2mm, can reduce the rigidity near above-mentioned 1st bight 4d and above-mentioned 2nd bight 4e more reliably, on the other hand, by being set to below 7mm, the rigidity of grounding parts can not too reduce.
In addition, in the tire of the 1st embodiment shown in Fig. 1, preferably, the 1st bight 4d and the 2nd bight 4e is acute angle as mentioned above, specifically, is preferably 15 ° ~ 80 °.This is because, by being set to more than 15 °, the rigidity of the 1st bight 4d and the 2nd bight 4e can be made extremely to reduce, on the other hand, by being set to less than 80 °, be easy to further move relative to the input from road surface near the 1st bight 4d and the 2nd bight 4e.
In addition, in the tire of the 1st embodiment shown in Fig. 1, preferably, the intervals (intervals such as, from the top of the 2nd pit part 4b of tire circumference side to the tire circumference on the top of the 2nd pit part 4b of tire circumference opposite side) of the tyre surface circumference in composite slot portion 4 is set to 50mm ~ 200mm.This is because, by being set to more than 50mm, can ground contact area being guaranteed, by being set to below 200mm, effect of the present utility model can be obtained fully.
At this, in the tire of the 1st embodiment shown in Fig. 1, the groove width (groove width in tread surface 1 upper shed) of circumference major trough 2 is not particularly limited, but considers balance between the rigidity of grounding parts and drainage and be preferably set to such as 4mm ~ 25mm.In addition, the groove depth of circumferential major trough 2 is not particularly limited, but considers balance between the rigidity of grounding parts and drainage and be preferably set to such as 4mm ~ 10mm.
In addition, as represent in Fig. 3 (a) represent circumferential major trough 2b in the cutaway view of circumferential major trough 2a, Fig. 3 (b) cutaway view, in the utility model, preferably, circumferential major trough 2a, 2b are provided with conical section 2c, 2d.Thereby, it is possible to guarantee the rigidity of tread surface 1 and further improve driving stability.
And as shown in Fig. 3 (a), Fig. 3 (b), the angle of inclination of cell wall outside when vehicle is installed, circumferential major trough is greater than the angle of inclination of cell wall inside when vehicle is installed, circumferential major trough.This is because the rigidity of the grounding parts outside when guaranteeing that vehicle is installed also guarantees driving stability when turning, and by only to increase angle of inclination, outside, can also guarantee drainage.
In addition, each size illustrative has been shown in Fig. 3 (a), Fig. 3 (b), but each size of circumferential major trough of the present utility model is at all not limited to these numerical value.
At this, in the tire of the 1st embodiment shown in Fig. 1, the widest maximum width grounding parts 3a of the width in the tread width direction in multiple grounding parts 3 when becoming vehicle with this maximum width grounding parts 3a and installing outside mode when tire is arranged on vehicle, based on guarantee rigidity and play sufficient driving stability viewpoint consider, preferably the width in tread width direction is more than 20% of tread width TW.In addition, " tread width TW " refer to tire is installed on applicable wheel rim, fills pressure in regulation, when being set to non-loaded, tread width direction distance between above-mentioned tyre surface end.
Then, in the tire of the 1st embodiment shown in Fig. 1, maximum width grounding parts 3a is formed and is communicated with and multiple (being two in the graphic scope) recess 5 extended outside tread width direction with circumferential major trough 2a.This recess 5 is formed as overlooking roughly triangular shape and analyses and observe the shape of V shape, and from the peristome relative to tread surface 1 of recess 5 to maximum groove depth position, groove width is successively decreased.In addition, preferably, the development length in the tread width direction of recess 5 is below 25mm, and recess 5 ends in maximum width grounding parts 3a.
By being provided with recess 5 as above, the reduction of the rigidity suppressing maximum width grounding parts 3a can being done one's utmost, and improve drainage.
And, as shown in Figure 1, maximum width grounding parts 3a is configured with many Width grooves 6.Thereby, it is possible to raising drainage.In this example embodiment, Width groove 6 in order to make ground pressure even on the whole at grounding parts, and makes the position in Width groove 6 adjacent in tyre surface circumference tread width direction each other be set to staggered each other by this Width groove 6 with staggering.
In addition, now, as shown in Figure 1, the tyre surface circumferential position in composite slot portion 4 is configured between the Width groove 6 inside tread width direction, thus the uniformization of the ground pressure of grounding parts entirety can be sought, the Width groove 6 inside this tread width direction for the position in tread width direction of staggering and configure, in Width groove 6 inside Width groove outside tread width direction 6 and tread width direction, Width groove 6 inside adjacent in tyre surface circumference tread width direction.
Then, as shown in Figure 1, grounding parts 3b is formed and is communicated with and multiple (being 3 in the graphic scope) recess 7 extended inside tread width direction with circumferential major trough 2b.This recess 7 is formed as overlooking roughly triangular shape and analyses and observe the shape of V shape, and from the peristome relative to tread surface 1 of recess 7 to maximum groove depth position, groove width is successively decreased.In addition, in the tire of the 1st embodiment shown in Fig. 1, recess 7 ends in grounding parts 3b.
By being provided with recess 7 as above, the reduction of the rigidity suppressing grounding parts 3b can being done one's utmost, and improve drainage.
And, as shown in Figure 1, grounding parts 3b is provided with multiple (in graphic scope, being two) and overlooks circular pit 8.Thereby, it is possible to moderately relax the rigidity not having the grounding parts 3b of Width groove, concentrating and improving ground connection property and improve driving stability of ground pressure can be relaxed.
Then, as shown in Figure 1, on the tread width direction outermost grounding parts 3c of the half portion of the tread width direction opposite side being border with tire equator face CL, tyre surface circumference is configured with Width groove 9 that many (being 5 in graphic scope) extend along tread width direction at spaced intervals.Thereby, it is possible to raising drainage.And, Width groove 9 is in order to seek the uniformization of the ground pressure of tread surface 1 entirety and preferably, be set to by its tyre surface circumferential position and be formed at maximum width grounding parts 3a and the position in tread width direction of staggering is arranged, position corresponding between Width groove 6 adjacent in tyre surface circumference.
< the 2nd embodiment >
Then, with reference to Fig. 2, the 2nd embodiment of the present utility model is described.As shown in Figure 2, the tire of the 2nd embodiment of the present utility model has (being two articles in illustrated example) the circumferential major trough 2 (2a, 2b) of one or more extended continuously along tyre surface circumference identically with the tire of the 1st embodiment shown in Fig. 1 in tread surface 1.Utilize these circumferential major troughs 2, the drainage of tire can be guaranteed.
In the example shown in Fig. 2, be different from the example shown in Fig. 1, circumferential major trough 2a extends on the CL of tire equator face, and crosses over tire equator face CL be border a tread width direction half portion and another tread width direction half portion.On the other hand, circumferential major trough 2b is configured at the one-sided half portion (showing in fig. 2 for opposite side) in above-mentioned tread width direction.
In addition, as shown in Figure 2, utilize these two circumferential major troughs 2 to divide with tyre surface end TE and be formed with multiple grounding parts 3.Specifically, utilize circumferential major trough 2a and tyre surface end TE, divide the tread width direction outermost grounding parts 3a being formed with and being positioned at the half portion of the tire equator face CL side, tread width direction that is border, utilize circumferential major trough 2a and circumferential major trough 2b, divide the grounding parts 3b being formed with the half portion being positioned at tread width direction opposite side, and, utilize circumferential major trough 2b and tyre surface end TE, divide the tread width direction outermost grounding parts 3c being formed with and being positioned at the half portion of the tire equator face CL tread width direction opposite side that is border.
In illustrated example, be positioned at the width in the tread width direction of the tread width direction outermost grounding parts 3a of the half portion of the tire equator face CL side, tread width direction that is border the widest, then, be positioned at the wider width in the tread width direction of the tread width direction outermost grounding parts 3c of the half portion of the tire equator face CL tread width direction opposite side that is border, the width being clipped in the tread width direction of two circumferential grounding parts 3b between major trough 2a, 2b is minimum.
In addition, as shown in Figure 2, these grounding parts 3a, 3b, 3c is ribbed grounding parts.
At this, as shown in Figure 2, the maximum width grounding parts 3a that the width in the tread width direction of this tire in multiple grounding parts 3 is the widest has multiple (being 5 in graphic scope) composite slot portion 4, and this composite slot portion 4 has the 1st pit part 4a, the 2nd pit part 4b and is communicated with the interconnecting part 4c of the 1st pit part 4a and the 2nd pit part 4b.
In illustrated example, the 1st pit part 4a makes groove width narrow from the end of the side of tyre surface circumference towards the end of opposite side and extend along tyre surface circumference, and the 1st pit part 4a is formed as the shape of overlooking roughly triangular shape.On the other hand, in illustrated example, the 2nd pit part 4b makes groove width broaden from the end of the side of tyre surface circumference towards the end of opposite side and extend along tyre surface circumference, and the 2nd pit part 4b is formed as the shape of overlooking roughly triangular shape.
In the example shown in Fig. 2,1st pit part 4a and the 2nd pit part 4b separate configuration on tread width direction, the mode that during to project on tread width direction, the 1st pit part 4a and the 2nd pit part 4b is overlapped makes that these pit parts Local Gravity in tyre surface circumference is folded to be configured.
And, in the example shown in Fig. 2, interconnecting part 4c is the stria extended continuously along tyre surface circumference, utilizes this interconnecting part 4c, be communicated with as mentioned above at the 1st pit part 4a and the 2nd pit part 4b of tread width direction separate configuration, these parts compounds and define composite slot portion 4.In addition, in the example shown in Fig. 2, composite slot portion 4 refers to the tyre surface circumferential zones that interconnecting part 4c is connected with the 2nd pit part 4b with the 1st pit part 4a, and multiple (being 5 in graphic scope) composite slot portion 4 is connected further by interconnecting part 4c.
And, as shown in Figure 2, owing to being formed with composite slot portion 4 on maximum width grounding parts 3a, therefore the 2nd bight 4e being formed with the 1st bight 4d folded by the 1st pit part 4a and interconnecting part 4c and being folded by the 2nd pit part 4b and interconnecting part 4c on maximum width grounding parts 3a, in illustrated example, these the 1st bight 4d and the 2nd bight 4e are acute angle, and the 1st bight 4d is positioned at across connectivity slot 4c the relative position that mutually tilts with the 2nd bight 4e.
In addition, in the example shown in Fig. 2, the 3rd bight 4f that maximum width grounding parts 3a is also formed the obtuse angle folded by the 1st pit part 4a and interconnecting part 4c and the 4th bight 4g at obtuse angle folded by the 2nd pit part 4b and interconnecting part 4c.
As shown in Figure 2, composite slot portion 4 is only located at maximum width grounding parts 3a.
Like this, the tire of the 2nd embodiment is also characterised in that identically with the tire of the 1st embodiment, maximum width grounding parts 3a has composite slot portion 4, this composite slot portion 4 has the 1st pit part 4a, the 2nd pit part 4b and is communicated with the interconnecting part 4c of the 1st pit part 4a and the 2nd pit part 4b, and maximum width grounding parts 3a is formed the 1st bight 4d folded by the 1st pit part 4a and interconnecting part 4c and the 2nd bight 4e folded by the 2nd pit part 4b and interconnecting part 4c.
Thus, about the tire of the 2nd embodiment, when tire is arranged on vehicle by the mode outside also when becoming vehicle with maximum width grounding parts 3a and installing, the action effect identical with the tire of above-mentioned 1st embodiment can be played, even if the groove area in composite slot portion 4 is less, also can relax the ground pressure of maximum width grounding parts 3a fully, improve the ground connection property of tread surface 1 entirety, improve driving stability.Particularly in the 2nd embodiment shown in Fig. 2, because interconnecting part 4c extends continuously in tyre surface circumference, be also formed with the 3rd bight 4f and the 4th bight 4e at obtuse angle, therefore, it is possible to further relax the ground pressure of this part.
Based on reason same as described above, about the 2nd embodiment shown in Fig. 2, also preferably, maximum width grounding parts 3a is the outermost grounding parts in tread width direction, and preferably, the 1st bight 4d and the 2nd bight 4e is acute angle, preferably, 1st pit part 4a and the 2nd pit part 4b is formed as the shape of overlooking roughly triangular shape, and preferably, the groove depth of interconnecting part 4c is greater than the groove depth of the 1st pit part 4a and the 2nd pit part 4b.
In addition, based on reason same as described above, about the 2nd embodiment shown in Fig. 2, also preferably, composite slot portion 4 is configured in center, tread width direction than maximum width grounding parts 3a by the position inside tread width direction, considers, particularly preferably be based on this viewpoint, as shown in Figure 2, composite slot portion 4 is integrally provided in center, tread width direction than maximum width grounding parts 3a by the position inside tread width direction.
At this, in the 2nd embodiment shown in Fig. 2, preferably, the 1st bight 4d and the 2nd bight 4e of acute angle are provided with conical section 4h, 4i.
At this, in the 2nd embodiment shown in Fig. 2, the groove width (groove width in tread surface 1 upper shed) of circumference major trough 2 is not particularly limited, but considers balance between the rigidity of grounding parts and drainage and be preferably set to such as 4mm ~ 25mm.
In addition, as represent in Fig. 3 (c) represent circumferential major trough 2b in the cutaway view of circumferential major trough 2a, Fig. 3 (d) cutaway view, in the 2nd embodiment, also preferably, circumferential major trough 2a, 2b are provided with conical section 2c, 2d.Thereby, it is possible to guarantee the rigidity of tread surface 1 and further improve driving stability.
And as shown in Fig. 3 (c), Fig. 3 (d), preferably, the angle of inclination of cell wall outside when vehicle is installed, circumferential major trough is greater than the angle of inclination of cell wall inside when vehicle is installed, circumferential major trough.
In addition, each size illustrative has been shown in Fig. 3 (c), Fig. 3 (d), but each size of circumferential major trough of the present utility model is at all not limited to these numerical value.
Then, in the 2nd embodiment shown in Fig. 2, maximum width grounding parts 3a is formed and is communicated with and multiple (being 4 in the graphic scope) recess 5 extended outside tread width direction with circumferential major trough 2a.This recess 5 is formed as overlooking roughly triangular shape and analyses and observe the shape of V shape, and from the peristome relative to tread surface 1 of recess 5 to maximum groove depth position, groove width is successively decreased.In addition, in the 2nd embodiment shown in Fig. 2, recess 5 ends in maximum width grounding parts 3a.
By being provided with recess 5 as above, the reduction of the rigidity suppressing maximum width grounding parts 3a can being done one's utmost, and improve drainage.
And, as shown in Figure 2, maximum width grounding parts 3a is configured with many Width grooves 6.Thereby, it is possible to raising drainage.In this example embodiment, Width groove 6 in order to make ground pressure even on the whole at grounding parts, and makes the position in Width groove 6 adjacent in tyre surface circumference tread width direction each other be set to staggered each other by this Width groove 6 with staggering.
In addition, now, as shown in Figure 2, the tyre surface circumferential position in composite slot portion 4 is configured between the Width groove 6 inside tread width direction, thus the uniformization of the ground pressure of grounding parts entirety can be sought, the Width groove 6 inside this tread width direction for the position in tread width direction of staggering and configure, in Width groove 6 inside Width groove outside tread width direction 6 and tread width direction, Width groove 6 inside adjacent in tyre surface circumference tread width direction.
And, as shown in Figure 2, grounding parts 3b is provided with multiple (in graphic scope, being 4) and overlooks circular pit 8.Thereby, it is possible to moderately relax the rigidity of grounding parts 3b not being provided with other grooves, recess, concentrating and improving ground connection property and improve driving stability of ground pressure can be relaxed.
Then, as shown in Figure 2, on the tread width direction outermost grounding parts 3c of the half portion of the tread width direction opposite side being border with tire equator face CL, tyre surface circumference is configured with Width groove 9 that many (being 4 in graphic scope) extend along tread width direction at spaced intervals.Thereby, it is possible to raising drainage.In the 2nd embodiment shown in Fig. 2, Width groove 9 is in order to seek the uniformization of the ground pressure of tread surface 1 entirety and preferably, be set to by its tyre surface circumferential position and be formed at maximum width grounding parts 3a and the position in tread width direction of staggering is arranged, position corresponding between Width groove 6 adjacent in tyre surface circumference.
In addition, in the utility model, the pattern groove of tread surface 1 and pattern block area ratio are considered balance between the rigidity of grounding parts and drainage and are preferably set to 15% ~ 30%.
Above, describe embodiment of the present utility model, but the utility model is at all not limited to above-mentioned embodiment.Such as, in the 1st embodiment shown in Fig. 1, between composite slot portion 4 adjacent in tyre surface circumference, be provided with in addition and this difform otch in composite slot portion 4, the further reduction of the rigidity of grounding parts can be sought.In addition also various distortion, change can be carried out.
[embodiment]
In order to understand fully effect of the present utility model, the tire of utility model example 1 ~ utility model example 6 and the tire of comparative example are made in trial-production, carry out the test evaluating tyre performance.Utility model example 1 is only with or without composite slot portion 4 with the difference of comparative example.
The specification table of each tire shows in the following table 1.In addition, the tire of utility model example 2 ~ utility model example 6 is about the tire being different from utility model example 1 with the specification shown in following table 1.
< driving stability >
Each tire sets above-mentioned of tire size 205/55R16 is loaded on applicable wheel rim, be installed with as 240kPa by interior, be arranged on vehicle in the mode that the tread width direction half portion (for comparative example, the tread width direction half portion for side correspondingly) with side, composite slot portion becomes outside when vehicle is installed.Then, for driving stability when turning on proving ground with the speed of 120km/h, carry out the sense evaluation based on chaufeur.Relatively evaluate with the index evaluation result of comparative example being set to 100, in the following table 1, numerical value is comparatively large, represents that driving stability is more excellent.Evaluation result is represented in the following table 1.
[table 1]
As shown in Table 1, the driving stability of the tire of utility model example 1 ~ utility model example 6 is all excellent than the driving stability of the tire of comparative example.
In addition, more known by utility model example 1 and utility model example 3, maximum width grounding parts is that the driving stability of the utility model example 1 of the outermost grounding parts in tread width direction is more excellent than the driving stability of utility model example 3.
And more known by utility model example 1 and utility model example 4, the 1st bight and the 2nd bight are that the driving stability of the utility model example 1 of acute angle is more excellent than the driving stability of utility model example 4.
In addition, more known by utility model example 1 and utility model example 5, the driving stability that the groove depth of interconnecting part is greater than the utility model example 1 of the groove depth of the 1st pit part and the 2nd pit part is more excellent than the driving stability of utility model example 5.
And then in addition, more known by utility model example 1 and utility model example 2, interconnecting part is that the driving stability of the utility model example 1 of the stria extended along tread width direction is more excellent than the driving stability of utility model example 2.
And, more known by utility model example 1 and utility model example 6, composite slot portion is configured in more excellent than the driving stability of utility model example 6 by the driving stability of the utility model example 1 of the position inside tread width direction than the center, tread width direction of maximum width grounding parts.
Utilizability in industry
According to the utility model, a kind of air-inflation tyre that improve driving stability can be provided.Air-inflation tyre of the present utility model is particularly suitable for the Pneumatic belt tire of street running wheel tire.
Claims (7)
1. an air-inflation tyre, is characterized in that,
Tread surface has and divides by the circumferential major trough of one or more extended continuously along tyre surface circumference and tyre surface end the multiple grounding parts formed,
The maximum width grounding parts that the width in the tread width direction in described multiple grounding parts is the widest has composite slot portion, and this composite slot portion has the 1st pit part, the 2nd pit part and is communicated with the interconnecting part of described 1st pit part and described 2nd pit part,
Described maximum width grounding parts is formed the 1st bight folded by described 1st pit part and described interconnecting part and the 2nd bight folded by described 2nd pit part and described interconnecting part.
2. air-inflation tyre according to claim 1, is characterized in that,
Described maximum width grounding parts is the outermost grounding parts in tread width direction.
3. air-inflation tyre according to claim 1 and 2, is characterized in that,
Described 1st bight and described 2nd bight are acute angle.
4. air-inflation tyre according to claim 1, is characterized in that,
The groove depth of described interconnecting part is greater than the groove depth of described 1st pit part and described 2nd pit part.
5. air-inflation tyre according to claim 1 and 2, is characterized in that,
Described interconnecting part is the stria extended along tread width direction.
6. air-inflation tyre according to claim 1 and 2, is characterized in that,
Described composite slot portion is configured in center, tread width direction than described maximum width grounding parts by the position inside tread width direction.
7. air-inflation tyre according to claim 1 and 2, is characterized in that,
Described maximum width grounding parts is ribbed grounding parts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014105164A JP6194279B2 (en) | 2014-05-21 | 2014-05-21 | Pneumatic tire |
| JP2014-105164 | 2014-05-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204506361U true CN204506361U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520138343.4U Expired - Fee Related CN204506361U (en) | 2014-05-21 | 2015-03-11 | Air-inflation tyre |
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| Country | Link |
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| JP (1) | JP6194279B2 (en) |
| CN (1) | CN204506361U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106427402A (en) * | 2015-08-04 | 2017-02-22 | 住友橡胶工业株式会社 | Pneumatic tire |
| CN110422015A (en) * | 2018-05-01 | 2019-11-08 | 住友橡胶工业株式会社 | Tire |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6805651B2 (en) * | 2016-09-01 | 2020-12-23 | 住友ゴム工業株式会社 | Pneumatic tires |
| JP6891515B2 (en) * | 2017-01-31 | 2021-06-18 | 住友ゴム工業株式会社 | tire |
| JP6844377B2 (en) * | 2017-03-30 | 2021-03-17 | 住友ゴム工業株式会社 | tire |
| JP7118625B2 (en) * | 2017-11-17 | 2022-08-16 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | pneumatic tire |
| JP7095381B2 (en) * | 2018-05-01 | 2022-07-05 | 住友ゴム工業株式会社 | tire |
| JP7056392B2 (en) * | 2018-06-13 | 2022-04-19 | 住友ゴム工業株式会社 | tire |
| JP7381281B2 (en) | 2019-10-09 | 2023-11-15 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | pneumatic tires |
| JP2023086600A (en) * | 2021-12-10 | 2023-06-22 | 株式会社ブリヂストン | Pneumatic radial tire for passenger vehicle |
| JP2023086599A (en) * | 2021-12-10 | 2023-06-22 | 株式会社ブリヂストン | Pneumatic radial tire for passenger vehicle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3881096B2 (en) * | 1997-09-26 | 2007-02-14 | 株式会社ブリヂストン | Pneumatic tires for passenger cars |
| JP5297778B2 (en) * | 2008-02-27 | 2013-09-25 | 株式会社ブリヂストン | Pneumatic tire |
| JP2010076561A (en) * | 2008-09-25 | 2010-04-08 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| JP4697336B2 (en) * | 2009-02-20 | 2011-06-08 | 横浜ゴム株式会社 | Pneumatic tire |
| CA2848908C (en) * | 2011-09-09 | 2016-03-22 | Bridgestone Corporation | Pneumatic tire |
| JP2013189067A (en) * | 2012-03-13 | 2013-09-26 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
-
2014
- 2014-05-21 JP JP2014105164A patent/JP6194279B2/en not_active Expired - Fee Related
-
2015
- 2015-03-11 CN CN201520138343.4U patent/CN204506361U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106427402A (en) * | 2015-08-04 | 2017-02-22 | 住友橡胶工业株式会社 | Pneumatic tire |
| CN106427402B (en) * | 2015-08-04 | 2019-12-13 | 住友橡胶工业株式会社 | Pneumatic tire |
| CN110422015A (en) * | 2018-05-01 | 2019-11-08 | 住友橡胶工业株式会社 | Tire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6194279B2 (en) | 2017-09-06 |
| JP2015217907A (en) | 2015-12-07 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20210311 |