Variable width tire

Abstract

The variable-width tire comprises a hub seat, the outer end of a central opening of the hub seat is coaxially and slidably sleeved with an outer hub, a corrugated rim is coaxially and fixedly connected between the outer end rim of the hub seat and the inner end rim of the outer hub, and the inner end rim of the hub seat is coaxially and fixedly connected with a rim seat with the outer end buckled to the groove bottom of the corrugated rim. A sliding groove is formed in the outer side wall of the rim base in the circumferential direction, an outer rim with the inner end buckled in the sliding groove is coaxially and fixedly connected to the outer end rim of the outer hub, and the two ends of a tire body of the tire are fixedly connected between the hub base and the rim base and between the outer hub and the outer rim respectively. The tire can better adapt to different road conditions by adjusting the width of the tire, the energy consumption performance and the safe driving performance of the vehicle are optimized to the maximum extent on the premise of ensuring the driving safety, the tire can better adapt to various complex use environments due to the variability, the application range of the vehicle is widened, and the safety of the vehicle is improved. And the overall practicability of the vehicle is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile tires, and in particular relates to variable-width tires. Background Art

[0002] With the continuous development of automobile technology, tires, as an important part of vehicles, are also imperative for technological innovation. Vehicles mainly equipped with fixed rubber tires have problems such as poor safety, poor adaptability to changing and complex road conditions, large tire wear, and inability to adjust tire width. Specifically, first, the safety and stability of traditional fixed-width tires may be challenged under complex and changing road conditions. Variable-width tires can better adapt to different road conditions and improve driving safety by adjusting the tire width. Second, traditional tires tend to wear faster under certain specific road conditions due to their fixed width during long-term use, while variable-width tires can adjust their width according to road conditions, reduce unnecessary wear, and extend their service life. Third, under different road conditions such as snow, wetlands, and sand, the grip and drainage performance of tires are crucial to the handling and stability of the vehicle. Variable-width tires can adjust the contact area according to different road conditions to optimize performance. At present, automobile rims are generally integral, and the width of the rims is fixed and cannot be adjusted. When rims of different widths are needed, new specifications of rims need to be redeveloped. Rims of multiple widths coexist at the same time, and each width rim requires the development of a new mold. In addition, when cracks appear on one side of the rim, since the rim is an integral structure, the entire rim needs to be replaced, resulting in high development costs and maintenance costs. Therefore, in order to reduce development and use costs, improve product commonality and product quality, it is necessary to develop a variable width rim and auxiliary mechanism design. With the continuous advancement of technology and the continuous development of the market, variable width tires are expected to become one of the important development directions of the tire industry in the future. Summary of the invention

[0003] The purpose of the present invention is to provide a variable width tire, which solves the problem that the existing fixed width tire has poor adaptability when dealing with various complex use environments.

[0004] The technical solution adopted by the present invention is: a variable width tire includes a hub seat, an outer hub is coaxially slidably sleeved on the outer end of the central opening of the hub seat, a corrugated wheel rim is coaxially fixedly connected between the outer end rim of the hub seat and the inner end rim of the outer hub, a rim seat is coaxially fixedly connected to the inner end rim of the hub seat, the outer end of the rim is buckled in the bottom of the corrugated wheel rim groove, a sliding groove is opened in the circumferential direction on the outer side wall of the rim seat, an outer rim is coaxially fixedly connected to the outer end rim of the outer hub, the outer end of the rim is buckled in the sliding groove, and the two ends of the tire carcass are respectively fixedly connected between the hub seat and the rim seat, and between the outer hub and the outer rim.

[0005] The present invention is also characterized in that: A plurality of telescopic cylinders are connected between the rims at both ends of the corrugated wheel rim at even intervals along the circumferential direction, and a notch is provided corresponding to each telescopic cylinder at the position where the rim seat is buckled with the bottom of the corrugated wheel rim groove.

[0006] A plurality of motors with output shafts facing inwards are fixed at even intervals at the inner end of the outer rim along the circumferential direction, and the output shafts of the motors are coaxially fixedly connected with synchronous screws that pass through the rim seat and are threadedly connected thereto.

[0007] The outer end of the central opening of the wheel hub seat is coaxially fixedly connected to a cylinder body, and the outer end of the inner wall of the cylinder body protrudes radially inward to form a limiting retaining ring. The inner end of the central opening of the outer hub is coaxially fixedly connected to a piston cylinder whose outer wall abuts against the inner wall of the limiting retaining ring. The outer side wall of the inner end of the piston cylinder is coaxially fixedly sleeved with a piston ring whose outer wall abuts against the inner wall of the cylinder body. A cylinder cover is coaxially fixed to the inner end of the cylinder body, and the outer end of the cylinder cover extends into the inner side of the piston cylinder and slides with it. Both ends of the inner wall of the cylinder body are connected to the outside with a driving air pipe.

[0008] Cylinder body sealing rings are sleeved between the inner and outer sides of the piston cylinder and the cylinder cover and the limit retaining ring respectively.

[0009] A receiving sleeve is coaxially and fixedly sleeved inside the hub seat, and a driving air pump is arranged in the interval between the receiving sleeve and the hub seat. The driving air pump is fixedly connected with the driving air pipe through a pipeline passing through the outer end wall of the hub seat.

[0010] An air pump is also arranged in the gap between the accommodating sleeve and the wheel hub seat. The air pump is fixedly connected with an air tube which extends into the tire body through the outer end wall of the wheel hub seat, the side wall of the wheel hub seat, the rim seat and the outer rim in sequence. A long strip-shaped accommodating hole is opened axially on the side wall of the outer rim corresponding to the air tube.

[0011] The inner and outer end rims of the corrugated wheel rim are respectively connected with the outer end rim of the wheel hub seat and the inner end rim of the outer wheel hub, and a carcass sealing ring is provided between them.

[0012] The beneficial effects of the present invention are as follows: the variable width tire of the present invention can better adapt to different road conditions by adjusting the tire width, and optimize the energy consumption performance and safe driving performance of the vehicle to the greatest extent under the premise of ensuring driving safety. On a dry and firm good road surface, an overly wide tire will increase the friction resistance with the ground, resulting in increased vehicle energy consumption and unnecessary wear of the tire. At this time, narrowing the tire can reduce driving resistance (rolling resistance), reduce vehicle energy consumption, save fuel or electricity, increase vehicle endurance, and extend the service life of the tire; when the vehicle is traveling on soft soil, desert or slippery road surface, and in a sharp turn or emergency braking driving condition, the timely increase in tire width can increase the contact area with the ground, significantly and greatly improve the grip between the tire and the ground, so that the tire can be more firmly attached to the ground, effectively resist the influence of the vehicle's lateral force and longitudinal force on the vehicle's driving stability, and reduce the braking distance, thereby greatly reducing the possibility of dangerous conditions such as slipping and loss of control of the vehicle, and effectively improving the vehicle's passing performance and driving safety. The variability of the tire width of the present invention enables the tire to better cope with various complex usage environments, broadens the application range of the vehicle, and improves the overall practicality of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of a variable width tire of the present invention; Figure 2 yes Figure 1 A partial enlarged schematic diagram of area A of the variable width tire of the present invention; Figure 3 yes Figure 1 A partial enlarged schematic diagram of area B of the variable width tire of the present invention; Figure 4 It is a schematic structural diagram of a hub seat in a variable width tire of the present invention; Figure 5 It is a schematic structural diagram of the outer hub of the variable width tire of the present invention; Figure 6 It is a schematic structural diagram of a corrugated wheel rim (when unfolded) in a variable width tire of the present invention; Figure 7 It is a schematic diagram of the matching installation of the hub seat and the outer hub in the variable width tire of the present invention; Figure 8 It is a schematic structural diagram of a hub portion of a variable width tire of the present invention; Fig. 9 is a schematic cross-sectional view of a hub portion of a variable width tire of the present invention; Fig.10 is a schematic cross-sectional view of a rim portion of a variable width tire of the present invention; Fig.11It is a schematic diagram of the matching installation of the hub part and the rim seat in the variable width tire of the present invention; Fig.12 It is a schematic diagram of the matching installation of the hub part and the rim part of the variable width tire of the present invention; Fig.13 It is a schematic diagram comparing the states of the variable width tire of the present invention before and after it is widened.

[0014] In the figure, 1. hub seat, 2. outer hub, 3. corrugated wheel rim, 4. rim seat, 5. slide groove, 6. outer rim, 7. tire body, 8. telescopic cylinder, 9. notch, 10. motor, 11. synchronous screw, 12. cylinder body, 13. limit ring, 14. piston cylinder, 15. piston ring, 16. cylinder head, 17. drive air pipe, 18. cylinder body sealing ring, 19. accommodating sleeve, 20. drive air pump, 21. air pump, 22. air pipe, 23. accommodating hole, 24. tire body sealing ring. DETAILED DESCRIPTION

[0015] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] Example 1 The present invention provides a variable width tire, such as Figures 1 to 13 As shown, it includes a hub seat 1 coaxially fixed to the outside of the axle end of the automobile axle, the inner side of the hub seat 1 is coaxially and fixedly sleeved with a accommodating sleeve 19 for placing pneumatic equipment and power supply, the outer end of the central opening of the hub seat 1 is coaxially slidably sleeved with an outer hub 2, a retractable corrugated wheel rim 3 is coaxially fixedly connected between the outer end rim of the hub seat 1 and the inner end rim of the outer hub 2, and the retractable part is similar to a bellows, a rim seat 4 is coaxially fixedly connected to the inner end rim of the hub seat 1, and the outer end is buckled in the bottom of the groove of the corrugated wheel rim 3, and the outer side wall of the rim seat 4 is circumferentially provided with a slide groove 5, and the outer end rim of the outer hub 2 is coaxially fixedly connected to the outer end rim of the outer hub 2. An outer rim 6 is buckled in the slide groove 5, and the two ends of the tire carcass 7 are respectively fixedly connected between the hub seat 1 and the rim seat 4, and between the outer hub 2 and the outer rim 6.

[0017] Through the above method, the center of the outer hub 2 is slidably sleeved on the outer end of the center opening of the hub seat 1 to provide positioning. When the tire width needs to be adjusted, the width of the corrugated rim 3 is adjusted to push the outer hub 2 closer to or away from the hub seat 1. At the same time, under the limit of one end of the outer rim 6 engaged in the slide groove 5, the outer rim 6 is synchronously close to or away from the rim seat 4 along the width direction of the slide groove 5, and the width of the tire body 7 clamped between the hub seat 1 and the rim seat 4 and between the outer hub 2 and the outer rim 6 at both ends becomes smaller or larger, thereby realizing the tire width adjustment.

[0018] Example 2 The present invention provides a variable width tire, which can be specifically implemented in accordance with Example 1 as follows: a plurality of telescopic cylinders 8 are connected at even intervals along the circumferential direction between the rims at the inner and outer ends of the corrugated rim, and a notch 9 is provided at a position where the rim seat 4 is snapped into the bottom of the groove of the corrugated rim 3 and corresponds to each telescopic cylinder 8; a plurality of motors 10 with output shafts facing inward are fixed at even intervals along the circumferential direction to the inner end of the outer rim 6, and the output shafts of the motors 10 are coaxially fixedly connected to a synchronous screw 11 that passes through the rim seat 4 and is threadedly connected thereto.

[0019] The outer end of the central opening of the wheel hub seat 1 is coaxially fixedly connected with a cylinder body 12, and the outer end of the inner wall of the cylinder body 12 protrudes radially inward to form a limit retaining ring 13. The inner end of the central opening of the outer wheel hub 2 is coaxially fixedly connected with a piston cylinder 14 whose outer wall abuts against the inner wall of the limit retaining ring 13. The inner end side wall of the piston cylinder 14 is coaxially fixedly sleeved with a piston ring 15 whose outer wall abuts against the inner wall of the cylinder body 12. The inner end of the cylinder body 12 is coaxially fixed with a cylinder head 16 whose outer end extends into the inner side of the piston cylinder 14 and slides with it. The inner end of the cylinder head 16 is fixedly connected to the shaft end of the automobile axle. In addition, a shaft sleeve can be sleeved between the shaft end of the axle and the accommodating sleeve 19 to provide further support. Cylinder sealing rings 18 are sleeved between the inner and outer sides of the piston cylinder 14 and the cylinder head 16 and the limit retaining ring 13 respectively, and both ends of the inner wall of the cylinder body 12 are connected to the outside with a driving air pipe 17. The accommodating sleeve 19 is coaxially spaced and fixedly sleeved on the inner side of the wheel hub seat 1. A driving air pump 20 and its power supply are arranged in the interval between the accommodating sleeve 19 and the wheel hub seat 1. The driving air pump 20 is fixedly connected to the driving air pipe 17 through a pipeline passing through the outer end wall of the wheel hub seat 1; an air pump 21 and its power supply are also arranged in the interval between the accommodating sleeve 19 and the wheel hub seat 1. The air pump 21 is fixedly connected with an air pipe 22 extending into the tire body 7 through the outer end wall of the wheel hub seat 1, the side wall of the wheel hub seat 1, the rim seat 4 and the outer rim 6 in sequence. The side wall of the outer rim 6 is provided with a long strip-shaped accommodating hole 23 along the axial direction corresponding to the air pipe 22. The inner and outer end rims of the corrugated wheel rim 3 are respectively connected to the outer end rim of the wheel hub seat 1 and the inner end rim of the outer wheel hub 2 with a tire body sealing ring 24.

[0020] Example 3 The present invention provides a variable width tire. When working, for example, when the tire width needs to be adjusted, the outer edge of the corrugated rim 3 is pushed outward by the telescopic cylinder 8, thereby driving the outer hub 2 to move outward. When moving, the motor 10 is synchronously started to drive the synchronous screw 11 to rotate so that it is out of the rim seat 4, thereby making the outer rim 6 and the outer hub 2 move outward synchronously. The telescopic cylinder 8 and the motor 10 work simultaneously, which can avoid the problem of uneven air pressure caused by uncontrollable cylinder gas, and can also avoid the problem of poor sealing of the tire body 7 clamped between the outer rim 6 and the outer hub 2 due to the asynchronous outward movement, thereby ensuring that the tire widening process can be stably implemented. The main power source of the tire widening process can be achieved in the following way: the air pump 21 is started to inflate the tire body 7 through the air pipe 22, and the two-position three-way solenoid valve can be connected to the air pipe 22 and placed in the gap between the accommodating sleeve 19 and the wheel hub seat 1. When inflating, the air path connecting the air pump 21 and the tire body 7 is opened, and when deflation, the air pump 21 is closed and the deflation air path of the tire body 7 is opened; when inflating, the driving air pump 20 is started synchronously, and the two-position four-way solenoid valve can be connected to the driving air pipe 17 and placed in the gap between the accommodating sleeve 19 and the wheel hub seat 1, and the inner end of the cylinder body 12 is inflated through the driving air pipe 17, and the cylinder body 12 is close to the inner end of the cylinder body 12. The outer end is vented, and at the same time, the piston ring 15 blocks the inside of the cylinder 12 into two cavities, the inner and outer cavities, and the cylinder seal ring 18 provides the overall cylinder 12 with sealing, so as to realize the pneumatic pushing of the piston cylinder 14 to move along the cylinder cover 16 toward the outer end of the cylinder 12, and the maximum stroke moves to the position of the limit ring 13 to stop, to prevent the piston cylinder 14 from coming out, and the piston cylinder 14 moves outward while the outer wheel hub 2 fixed to it moves away from the wheel hub seat 1, and drives the outer end of the tire body 7 to move outward with the cooperation of the outer wheel rim 6 moving outward, and the position of the inflation tube 22 is fixed when the outer wheel rim 6 moves outward, and the accommodating hole 23 provides the relative moving position of the inflation tube 22 and the outer wheel rim 6, so as to realize the tire widening. In the above process, in addition to the sealing provided by the outer edges of the wheel hub and rim that clamp the two ends of the tire body 7, the tire seal ring 24 also provides the sealing of the remaining connection positions, so as to ensure the sealing performance during the tire widening process.

Claims

1. A variable width tire, characterized in that: The invention comprises a hub seat (1), wherein an outer hub (2) is coaxially slidably sleeved on the outer end of a central opening of the hub seat (1), a corrugated wheel rim (3) is coaxially fixedly connected between the outer end rim of the hub seat (1) and the inner end rim of the outer hub (2), a rim seat (4) is coaxially fixedly connected to the inner end rim of the hub seat (1), the outer end of which is buckled in the groove bottom of the corrugated wheel rim (3), a sliding groove (5) is opened on the outer side wall of the rim seat (4) along the circumferential direction, an outer rim (6) is coaxially fixedly connected to the outer end rim of the outer hub (2), the inner end of which is buckled in the sliding groove (5), and two ends of a tire carcass (7) are respectively fixedly connected between the hub seat (1) and the rim seat (4), and between the outer hub (2) and the outer rim (6).

2. The variable width tire according to claim 1, characterized in that: A plurality of telescopic cylinders (8) are connected between the wheel flanges at the inner and outer ends of the corrugated wheel rim (3) at even intervals along the circumferential direction, and a notch (9) is provided at a position where the wheel rim seat (4) is buckled onto the groove bottom of the corrugated wheel rim (3) corresponding to each telescopic cylinder (8).

3. The variable width tire according to claim 1, characterized in that: A plurality of motors (10) with output shafts facing inwards are fixed at even intervals along the circumferential direction on the inner end of the outer rim (6), and the output shafts of the motors (10) are coaxially fixedly connected to a synchronous screw (11) that passes through the rim seat (4) and is threadedly connected thereto.

4. The variable width tire according to claim 1, characterized in that: The outer end of the central opening of the wheel hub seat (1) is coaxially fixedly connected to a cylinder body (12), the outer end of the inner wall of the cylinder body (12) protrudes radially inward to form a limit retaining ring (13), the inner end of the central opening of the outer wheel hub (2) is coaxially fixedly connected to a piston cylinder (14) whose outer wall abuts against the inner wall of the limit retaining ring (13), the inner end side wall of the piston cylinder (14) is coaxially fixedly sleeved with a piston ring (15) whose outer wall abuts against the inner wall of the cylinder body (12), the inner end of the cylinder body (12) is coaxially fixedly fixed with a cylinder cover (16) whose outer end extends into the inner side of the piston cylinder (14) and is slidably matched therewith, and both ends of the inner wall of the cylinder body (12) are connected to the outside with a driving air pipe (17).

5. The variable width tire according to claim 4, characterized in that: Cylinder body sealing rings (18) are sleeved between the inner and outer sides of the piston cylinder (14) and the cylinder cover (16) and the limit retaining ring (13).

6. The variable width tire according to claim 4, characterized in that: A receiving sleeve (19) is coaxially spaced and fixedly sleeved on the inner side of the wheel hub seat (1), and a driving air pump (20) is arranged in the space between the receiving sleeve (19) and the wheel hub seat (1). The driving air pump (20) is fixedly connected to the driving air pipe (17) via a pipeline passing through the outer end wall of the wheel hub seat (1).

7. The variable width tire according to claim 6, characterized in that: An air pump (21) is also provided in the interval between the accommodation sleeve (19) and the wheel hub seat (1). The air pump (21) is fixedly connected to an air pipe (22) which extends into the tire body (7) through the outer end wall of the wheel hub seat (1), the side wall of the wheel hub seat (1), the rim seat (4) and the outer rim (6) in sequence. A long strip-shaped accommodation hole (23) is opened in the axial direction of the side wall of the outer rim (6) corresponding to the air pipe (22).

8. The variable width tire according to claim 1, characterized in that: A carcass sealing ring (24) is connected between the inner and outer end rims of the corrugated wheel rim (3) and the outer end rim of the wheel hub seat (1) and the inner end rim of the outer wheel hub (2), respectively.

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