CN112026454A

CN112026454A - Vacuum tire and wheel

Info

Publication number: CN112026454A
Application number: CN202010935474.0A
Authority: CN
Inventors: 严永知
Original assignee: Cheng Shin Rubber Xiamen Ind Ltd
Current assignee: Cheng Shin Rubber Xiamen Ind Ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2020-12-04

Abstract

The invention provides a vacuum tire and a wheel, the tire comprises a tire body, a tread portion, a first tire shoulder portion and a second tire shoulder portion are formed on the tire body, the first tire shoulder portion and the second tire shoulder portion are arranged on two sides of the tread portion in a one-to-one correspondence mode, a first accommodating groove is arranged at the inner side of the tire corresponding to the first tire shoulder portion, a second accommodating groove is arranged at the inner side of the tire corresponding to the second tire shoulder portion, a first solvent is accommodated in the first accommodating groove, a second solvent is accommodated in the second accommodating groove, the first accommodating groove and the second accommodating groove which are located in the same radial section are communicated through a connecting groove, and an air outlet is formed in the connecting groove. Therefore, the problem of air leakage of the vacuum tire can be efficiently solved, the whole tire is light in weight, the energy consumption of the vehicle is low, the tire can be automatically inflated, and the assistance of inflating equipment is not needed.

Description

Vacuum tire and wheel

Technical Field

The invention relates to the technical field of tires. In particular to a vacuum type tire and a wheel.

Background

The tire matched with the conventional electric vehicle is basically a vacuum tire, and the vacuum tire cannot keep the air in a state of air shortage or puncture, loses the bearing capacity of the whole vehicle (self weight of people/objects/vehicle bodies), and cannot run normally or safely. There are three existing techniques for solving this problem. The first is self-supporting or run-flat product, which can still support the vehicle to run for a period of time by using the hard/thick characteristic of the tyre body under the puncture and zero wind pressure state; for example, the weight and rolling resistance performance of the run-flat product with the existing specification of 14 × 2.50 is greatly different from that of the common TL tire product shown in table 1; the run-flat product is different from other common products in that a gas-retaining layer is added in the tire and a buffer layer is additionally attached between the rubber layer and the cord layer to reinforce the tire body and improve the puncture-proof performance. Because the air-retaining layer and the buffer layer are added, the tire is harder and heavier, the air-free state is not easy to be perceived, the used materials are more, the environment is not friendly, the energy consumption cost in the production process is high, and the market consumption range is limited. And the tire is heavy, and the endurance capacity of the vehicle can be reduced when the rolling resistance is large. The second is a tire pressure monitoring device, which adds a low pressure warning joint on the tire valve, and can identify the tire valve through the color change of the joint when the tire valve is in low pressure; however, it can only monitor the pressure change, and if there is no portable inflation device, the vehicle still cannot run continuously, and the monitoring component is easy to age, and the monitoring precision will be reduced. The third is a self-repairing tyre product, a layer of self-repairing rubber sheet is pasted or self-repairing liquid is arranged in the inner side or the interlayer of the tyre, when puncture occurs, the self-repairing rubber sheet or the self-repairing liquid can rapidly repair and fill the puncture hole, and the air-retaining effect is achieved; however, the self-repairing film or the self-repairing liquid is liable to generate self-adhesion due to tire deformation during tire mounting or use, and may contaminate the tire body and fail to perform normal functions.

TABLE 1

Tyre for vehicle wheels	Existing common TL tire products	Existing run flat products
			Weight (D)	100％	135％
Resistance of rolling	100％	78％

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above. Therefore, an object of the present invention is to provide a vacuum tire, which solves the problem of air leakage of the vacuum tire, and has the advantages of light overall weight, low energy consumption, automatic inflation, and no need of auxiliary inflating equipment.

Another object of the invention is to propose a wheel.

In order to achieve the above object, the present invention provides, in one aspect, a vacuum type tire, including a tire body, a tread portion, a first shoulder portion and a second shoulder portion formed on the tire body, the first shoulder portion and the second shoulder portion being disposed on two sides of the tread portion in a one-to-one correspondence manner, a first accommodating groove being disposed at an inner side of the tire corresponding to the first shoulder portion, a second accommodating groove being disposed at an inner side of the tire corresponding to the second shoulder portion, a first solvent being accommodated in the first accommodating groove, a second solvent being accommodated in the second accommodating groove, the first accommodating groove and the second accommodating groove being in a same radial cross section and being communicated with each other through a connecting groove, and an air outlet being disposed on the connecting groove.

According to the vacuum type tire disclosed by the embodiment of the invention, when the tire loses wind pressure due to puncture or other factors, the weakest and most easily-deformed position of the tire is the tire shoulder, under the influence of the weight of the vehicle and the weight of objects, the first solvent in the first accommodating groove and the second solvent in the second accommodating groove are extruded out to the connecting groove, then the two substances are transmitted through the connecting groove to react to generate a certain amount of gas, and the gas escapes from the gas outlet hole of the connecting groove, so that the tire losing wind pressure is supplemented with air. Compared with the existing vacuum tire, the vacuum tire has the advantages that the material is saved, an air-retention layer, a buffer layer and the like are not required to be arranged, the environment is friendly, the weight of the whole tire is light, the energy consumption of a vehicle can be reduced, the vehicle can be automatically inflated, and the inflating equipment is not required to be assisted.

In addition, the vacuum tire according to the above embodiment of the present invention may further have the following additional technical features:

according to the embodiment of the present invention, the first accommodation groove and the second accommodation groove are uniformly arranged in the tire circumferential direction. Therefore, the tire can be timely inflated, and preferably, the first accommodating groove and the second accommodating groove are uniformly distributed at three positions along the circumferential direction of the tire. Of course, the amount of gas generated can be controlled by setting the number of the first receiving groove and the second receiving groove according to the size of the actual tire. Wherein, the quantity of first holding tank and second holding tank is the same.

According to the embodiment of the invention, the included angle between the central line of the first containing groove and the central line of the second containing groove and the central line of the tread part is 55-70 degrees. Therefore, the holding tank is guaranteed to have the best stress point, so that the solvent in the holding tank can be extruded out of the connecting groove in time to react.

According to an embodiment of the present invention, the tire body is provided with marks corresponding to the first receiving groove and the second receiving groove on an outer surface of a sidewall. The position of the accommodating groove can be confirmed through the mark, and the accommodating groove is always on one side contacting with the ground when force is applied.

According to an embodiment of the present invention, the first solvent and the second solvent are respectively contained in a containing tank after being encapsulated. So, through the packaging mode of capsule, both guaranteed that the solvent can be extruded, guaranteed again that the solvent can not flow out automatically when the holding tank does not have the atress. Of course, other ways of breaking by forced compression are possible besides the capsule.

According to an embodiment of the present invention, the first solvent is aluminum sulfate and the second solvent is sodium bicarbonate; the dosage ratio of the aluminum sulfate in the first accommodating groove and the sodium bicarbonate in the second accommodating groove in the same radial section is 1: 6. Thus, the amount of gas generated can be controlled by setting the dosage of both solvents.

According to the embodiment of the invention, the width of the connecting groove is 0.5-1 mm, and the depth of the connecting groove is 1.5-3 mm. Thereby, it can be ensured that the first solvent and the second solvent react sufficiently in the connecting groove to generate gas.

According to the embodiment of the invention, the notch of the first accommodating groove and the notch of the second accommodating groove are both sealed with films. The film prevents the solvent from running out of the holding tank.

Another aspect of the invention proposes a wheel comprising a vacuum-type tyre as described above.

According to the wheel, due to the arrangement of the vacuum type tire, materials are saved, the environment is friendly, the whole tire is light in weight, the vehicle energy consumption is low, the automatic inflation can be realized, and the assistance of inflation equipment is not needed.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic block diagram of an embodiment according to the present invention;

FIG. 2 is a partial inner-liner development of a tire according to one embodiment of the present invention;

FIG. 3 is an enlarged cross-sectional view B-B' of FIG. 2;

FIG. 4 is an enlarged cross-sectional view A-A' of FIG. 2;

FIG. 5 is an enlarged cross-sectional view of C-C' of FIG. 2;

figure 6 is a cross-sectional view of a receiving groove and a connecting groove according to another embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In the present invention, it should be noted that, in fig. 1, the vertical direction is defined as the tire radial direction, and the lateral direction is defined as the tire axial direction. The terms "inside", "outside", "both sides", "left side", "right side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The implementation of a vacuum type tire according to the present invention will be described in detail with reference to fig. 1 to 6.

As shown in fig. 1 and 2, a vacuum tire according to an embodiment of the present invention includes a tire body, a tread portion 1, a first shoulder portion 2 and a second shoulder portion 3 are formed on the tire body, the first shoulder portion 2 and the second shoulder portion 3 are disposed on two sides of the tread portion 1 in a one-to-one correspondence manner, wherein a first accommodating groove 4 is disposed at a tire inner side corresponding to the first shoulder portion 2, a second accommodating groove 5 is disposed at a tire inner side corresponding to the second shoulder portion 3, a first solvent is accommodated in the first accommodating groove 4, a second solvent is accommodated in the second accommodating groove 5, the first accommodating groove 4 and the second accommodating groove 5 in the same radial cross section are communicated through a connecting groove 6, and a vent hole 61 is disposed on the connecting groove 6.

Wherein the first shoulder portion 2 may be disposed on the left side of the tread portion 1, and the second shoulder portion 3 may be disposed on the right side of the tread portion 1.

It is understood that the first receiving groove 4 and the second receiving groove 5 are plural in number and the coupling groove 6 coupling both is plural in number along the tire circumferential direction.

From this, accomodate the first holding tank 4 that has first solvent and accomodate the second holding tank 5 that has the second solvent through the setting, and will be located same radial cross section's first holding tank 4 and second holding tank 5 intercommunication through spread groove 6, can be when the tire loses the wind pressure, produce the effort to the holding tank, make first solvent in the first holding tank 4 and the second solvent in the second holding tank 5 extrude and transmit in spread groove 6, then the reaction produces gas, discharge from venthole 61 on spread groove 6 again and carry out the tonifying qi to the interior die cavity of tire automatically.

Wherein, two

holding grooves

4, 5 and connecting groove 6 in the tire inner can be realized by arranging corresponding convex shapes on the surface of the air bag in the vulcanization process. Therefore, the automatic air supply of the vacuum type tire can be realized by changing and designing the accommodating groove and the connecting groove 6 on the structure of the conventional tire. The vacuum tire can not be weighted and consumptive, and can not deform and self-adhere like a repairing film or a repairing liquid.

Therefore, according to the vacuum type tire of the embodiment of the present invention, when the tire loses wind pressure due to puncture or other factors, the weakest and most easily deformed position of the tire is the tire shoulder, under the influence of the weight of the vehicle and the weight of the object, the first solvent in the first receiving tank 4 and the second solvent in the second receiving tank 5 are squeezed out to the connecting groove 6, and then the two substances are transmitted through the connecting groove 6 to react to generate a certain amount of gas, which escapes from the air outlet 61 of the connecting groove 6, so as to supplement the air pressure to the tire internal cavity. Compared with the existing vacuum tire, the vacuum tire has the advantages of more material saving, more environment friendliness, light weight of the whole tire, less energy consumption of the vehicle, automatic inflation and no need of assistance of inflating equipment.

Specifically, the vacuum type tire comprises a rubber layer 100 arranged at the outermost layer of a tread part, a first cord layer 200, a second cord layer 300, a first inner rubber layer 400 and a second inner rubber layer 500 which are sequentially coated from outside to inside, wherein the two cord layers are reversely wrapped to the side wall around a bead wire. The two receiving

grooves

4, 5 and the connecting groove 6 are arranged in the tyre, for example from the second inner tread layer 500 to the first inner tread layer 400.

In some embodiments of the present invention, the first accommodation groove 4 and the second accommodation groove 5 are arranged uniformly in the tire circumferential direction. From this, can in time, steadily carry out the tonifying qi to tire inner cavity, wherein, can be according to the difference of actual tire size, the quantity of gas that produces is controlled to the quantity that the accessible set up first holding tank 4 and second holding tank 5. In this embodiment, first holding tank 4 and second holding tank 5 are equallyd divide three places along tire circumference and are arranged to can avoid because of producing gas too little, can't play pneumatic effect, or produce gas too much, and the risk that the tire burst appears.

Referring to fig. 1, the included angle α between the centerline of the first receiving groove 4 and the centerline of the second receiving groove 5 and the centerline of the tread portion 1 is 55 ° to 70 °. Therefore, the two holding

tanks

4 and 5 can be guaranteed to have the best stress points, so that the solvent in the holding tanks can be extruded out to the connecting grooves in time for reaction. Further, the angle α between the center line of the first accommodation groove 4 and the center line of the second accommodation groove 5 and the center line of the tread portion 1 is preferably 65 °. The angle of 65 degrees is used as the best stress position point, so that the solvent in the two

accommodating grooves

4 and 5 can be discharged in time when the tire loses wind pressure.

The shapes and the styles of the first accommodating groove 4 and the second accommodating groove 5 are not limited, and the volume in the grooves is required to be larger than the volumes of the first solvent and the second solvent, and is optimally larger than 10-20%. Referring to fig. 3, in the embodiment of the present invention, the shape patterns of the first receiving groove 4 and the second receiving groove 5 are preferably circular. Then, the notch of the first accommodating groove 4 and the notch of the second accommodating groove 5 are both sealed with films, for example, the notches are sealed by a strong film. The setting of film can prevent that the solvent from running out of holding tank, guarantees that the solvent just is extruded to spread groove 6 when the atress is extruded.

In some embodiments of the present invention, the first solvent and the second solvent are respectively received in the receiving groove after being packaged by the capsule. So, through the packaging mode of capsule, both guaranteed that the solvent can be extruded, guaranteed again that the solvent can not flow out automatically when the holding tank does not have the atress. Of course, other ways of breaking by forced compression are possible, for example by strong film wrapping or the like. Here, it is also embodied that the film is sealed on the notch of the accommodating groove to ensure that the solvent is always located in the accommodating groove. The gas generated by the reaction of the first solvent and the second solvent is inert and nontoxic, and cannot react with the tire rubber to influence the service life of the tire or generate chemical corrosion damage.

Specifically, the first solvent may be aluminum sulfate, and the second solvent may be sodium bicarbonate. Then, the dosage ratio of the aluminum sulfate in the first holding tank 4 and the sodium bicarbonate in the second holding tank 5 in the same radial section is 1: 6. Thus, the amount of gas generated can be controlled by setting the dosage of both solvents. Therefore, the solvent can be packaged in a capsule mode, and the solvent packaged in the capsule mode can be correspondingly placed in the accommodating groove after the finished tire is vulcanized. In addition, in addition to the amount of generated gas that can be controlled by setting the doses of the first solvent and the second solvent, as described above, the amount of generated gas can also be controlled by setting the number of the accommodation grooves distributed in the tire circumferential direction according to the size of the actual tire.

In some embodiments of the invention, the tyre body is provided with markings corresponding to the first and

second accommodation grooves

4, 5 on the outer surface of the sidewall 7. The marks can be represented by characters or shapes, the number of the marks corresponds to the number of the accommodating grooves, and the marks are used for confirming the positions of the accommodating grooves, so that the accommodating grooves are always positioned below the tire (on the side contacting the ground) when the force is applied by automatic air inflation, and the function of automatic air inflation is ensured to be exerted. For example, the first solvent in the first receiving groove 4 is pressed and flows into the connecting groove 6, but the second receiving groove 5 with the same radial section is not pressed, and at this time, the two receiving grooves with the same radial section can be pressed artificially according to the mark.

In connection with fig. 4, the connecting groove 6 plays a key role in conveying, the groove width W1 can be set between 0.5mm and 1mm, the groove depth H1 can be set between 1.5mm and 3mm, and the shape pattern of the connecting groove is preferably circular. Thereby, it can be ensured that the first solvent and the second solvent react sufficiently in the connecting groove to generate gas. In this embodiment, the air outlet 61 may be an opening on the coupling groove 6. Of course, a through hole may be additionally formed.

In some embodiments of the present invention, referring to fig. 2, the first receiving groove 4 and the second receiving groove 5 located in the same radial section are axially and linearly communicated through the connecting groove 6, and the connecting manner of the first receiving groove 4 and the second receiving groove 5 is shown in fig. 5. Of course, in other embodiments, it is also possible to modify the arrangement of the receiving grooves, for example, the inclined arrangement as shown in fig. 6, in such a way that the first solvent and the second solvent can be transported and reacted within the connecting groove 6, and that it is ensured that the weight on both sides of the tire is not affected, i.e. no other negative effects such as runout, run-out, etc. occur.

A wheel according to an embodiment of the present invention includes the vacuum type tire described above. Through the arrangement of the vacuum tire, the wheel can save more materials, is more environment-friendly, has light weight of the whole tire and less energy consumption, can be automatically inflated, and does not need to be assisted by inflating equipment.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. The utility model provides a vacuum type tire, includes the tire body, be formed with tread portion, first tire shoulder and second tire shoulder on the tire body, first tire shoulder with second tire shoulder sets up one-to-one the both sides of tread portion, its characterized in that, department is equipped with first holding tank in the tire that first tire shoulder corresponds, be equipped with the second holding tank in the tire that second tire shoulder corresponds, accomodate first solvent in the first holding tank, accomodate the second solvent in the second holding tank, be in same radial cross section first holding tank with through the spread groove intercommunication between the second holding tank, be equipped with the venthole on the spread groove.

2. The vacuum type tire according to claim 1, wherein said first receiving groove and said second receiving groove are arranged uniformly in the tire circumferential direction.

3. The vacuum type tire according to claim 1 or 2, wherein the center line of the first receiving groove and the center line of the second receiving groove each form an angle of 55 ° to 70 ° with the center line of the tread portion.

4. The vacuum type tire as claimed in claim 1, wherein said tire body is provided with marks corresponding to said first receiving groove and said second receiving groove on an outer surface of a sidewall.

5. The vacuum type tire according to claim 1, wherein the first solvent and the second solvent are contained in a containing tank after being encapsulated.

6. Vacuum tyre according to claim 1 or 5, characterized in that said first solvent is aluminium sulphate and said second solvent is sodium bicarbonate; the dosage ratio of the aluminum sulfate in the first accommodating groove and the sodium bicarbonate in the second accommodating groove in the same radial section is 1: 6.

7. The vacuum type tire as claimed in claim 1, wherein said connecting groove has a groove width of 0.5mm to 1mm and a groove depth of 1.5mm to 3 mm.

8. The vacuum-type tire according to claim 1, wherein the notch of said first receiving groove and the notch of said second receiving groove are each sealed with a film.

9. A wheel comprising a vacuum-type tyre as claimed in any one of claims 1 to 8.