Shock-absorbing wheel

Abstract

A shock-absorbing wheel, comprising an inner hub, an outer hub and a tread ring (11) sleeved on the outer hub, and further comprising a shock-absorbing ring (12) movably connected between the hubs (13), wherein the shock-absorbing ring (12) is composed of elastic units (121) arranged in a circumferential array, and each elastic unit (121) contains at least one elastic member, which is an arcuate spring (121-1); and shaft holes (131) are provided on the radial surface of the hubs (13), and the arcuate springs pass through the shaft holes (131) and are connected to the hubs (13). The shock-absorbing wheel further comprises pin seats (132), wherein the pin seats (132) are arranged on the side of the hubs (13) facing the shock-absorbing ring (12), and the arcuate springs (121-1) pass through the pin seats (132) and are movably connected to the hubs (13). The arcuate springs are movably connected between the inner hub and the outer hub to replace traditional rigid spokes, thereby overcoming the drawbacks of traditional structures such as increased plastic stress, low load-bearing efficiency, and reduced shock resistance when the steel spokes bend under force.

Description

A shock absorbing wheel

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 2024209433483, filed on April 30, 2024, with the State Intellectual Property Office of China, and entitled “A shock absorbing wheel”, the content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of tire accessories, and particularly relates to a shock absorbing wheel. BACKGROUND

[0004] At present, the tires for automobiles are mostly pneumatic tires. The pneumatic wheels have the ability of load bearing, shock absorbing and force transmission (acceleration, stopping and direction changing), and are particularly suitable for various vehicles, especially bicycles, motorcycles, automobiles and trucks. The shock absorbing ability of the tires can also be used in other applications, such as hand carts for transporting medical equipment or sensitive electronic equipment. However, the pneumatic tires are prone to be punctured by sharp objects and cause the vehicle to overturn, especially when the tire cannot be repaired in the wild and the walking is affected. Therefore, some run-flat tires (non-pneumatic) have also appeared, for example, steel wires are inserted in rubber tires, and the steel wires and the rubber tires are combined together, and the shock absorbing is realized by the deformation of the steel wires, and the deformation of the spokes of the wheel rim solves the problem of tire shock absorbing, but the movable spokes can only move vertically at the ground, and do not have the shock absorbing effect at other parts of the wheel rim, and the tire cannot be replaced after being damaged. The solid tires in the run-flat tires cannot be punctured, but they rely on the compression of the part in contact with the ground to bear the load, and in addition, this type of tire is heavy and rigid, and does not have the ability to absorb impact like the pneumatic wheel. When made more elastic, the above-mentioned non-pneumatic tires do not have the load bearing capacity or durability of the pneumatic wheel.

[0005] In order to overcome these shortcomings, the Chinese patent CN1284446A proposes a spring type non-pneumatic wheel, which replaces the inner tube of the ordinary wheel with a radial spiral spring and a spring plate steel ring. However, the spring on the radial surface is limited by the inner and outer spring plate steel rings, and the axial torsional resistance is poor, the shock is only buffered by the tire and the internal spring, the force cannot be well absorbed and decomposed, and once the local spring is damaged, the normal use of the entire component will be affected. In addition, the spokes for bearing in the structure are rigid members, and the straight rigid bearing structure provides bearing capacity in the form of bending under stress. This stress form is easy to cause the lever effect, resulting in stress amplification, low bearing efficiency and weakened shock resistance. SUMMARY

[0006] The present application provides a shock-absorbing wheel to improve the technical deficiencies of the spring-type non-pneumatic wheel involved in the above background art.

[0007] To solve the above technical problems, the present application provides a shock-absorbing wheel, which comprises an inner hub, an outer hub, and a tire ring sleeved on the outer hub, and further comprises a shock-absorbing ring movably connected between the hubs, wherein the shock-absorbing ring is composed of a circumferential array of elastic units, each of the elastic units contains at least one elastic member, and the elastic member is an arcuate spring.

[0008] In a preferred embodiment, a shaft hole is provided on the radial surface of the hub, and the arcuate spring is connected to the hub through the shaft hole.

[0009] In a preferred embodiment, a latch seat is further provided, which is arranged on the side of the hub facing the shock-absorbing ring, and the arcuate spring is movably connected to the hub through the latch seat.

[0010] In a preferred embodiment, a limiting part is provided on the arcuate spring to limit the sliding of the arcuate spring out of the latch seat, wherein the limiting part comprises a first insertion part penetrating into the latch seat, a second insertion part parallel to the first insertion part and having a certain height difference, and a third insertion part connecting the first insertion part and the second insertion part, and the third insertion part is curved.

[0011] When the arcuate spring penetrates into the insertion hole of the latch seat, the third insertion part of the limiting part is tightly fitted with the insertion hole against the penetration direction of the arcuate spring.

[0012] In a preferred embodiment, the radial surface edges of the inner hub are gathered towards each other to form a clamping seat embedding the curved part of the arcuate spring, and when the arcuate spring moves in the axial direction of the hub under external pressure, the clamping groove is fitted with the limiting part against the moving direction of the arcuate spring.

[0013] In a preferred embodiment, the radial surface edges of the inner hub extend outward to form a wedge-shaped groove supporting the curved part of the arcuate spring, and when the arcuate spring moves in the axial direction of the hub under external pressure, the wedge-shaped groove pushes the arcuate spring against the moving direction of the arcuate spring.

[0014] In a preferred embodiment, the hub is symmetrical and has two lobes, and the rear end surfaces of the two lobes are fused or connected to form an integrated body.

[0015] In a preferred embodiment, the elastic unit contains a single arcuate spring, and the circumferential array of the arcuate spring forms the shock-absorbing ring.

[0016] In a preferred embodiment, the elastic unit contains a single arcuate spring, and the adjacent elastic units are mirror-symmetrical.

[0017] In a preferred embodiment, the elastic unit contains two arcuate springs, and the two arcuate springs are mirror-symmetrical and gathered towards each other in the radial direction of the hub.

[0018] In a preferred embodiment, the elastic unit contains two arc springs, which are mirror-symmetrical and axially superimposed towards the inner hub.

[0019] In a preferred embodiment, the elastic unit contains two arc springs, which are mirror-symmetrical and the ends thereof towards the inner hub are connected.

[0020] In a preferred embodiment, the end of the arc spring away from the inner hub is connected with the arc spring on the adjacent elastic unit.

[0021] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0022] The shock-absorbing wheel provided by the present application replaces the traditional rigid spoke with the shock-absorbing ring with the arc springs movably connected between the inner and outer hubs, and when in use, the inner hub pressed against the arc spring synchronously floats up and down with the arc spring within a certain range to realize the same-frequency shock-absorbing, so as to overcome the application defects of the traditional structure, i.e., the plastic stress increases, the carrying efficiency decreases, and the anti-shock performance weakens when the steel spoke used for bearing is bent.

[0023] The shock-absorbing wheel provided by the present application detachably connects the two ends of the arc spring with the hub, so that the user can more quickly replace the spring member that is elastically fatigued during the use of the wheel.

[0024] The shock-absorbing wheel provided by the present application mirror-arranges and combines the arc springs in the elastic unit, effectively compensates for the application defects of poor axial torsion resistance of the arc spring in structure, and makes the wheel constructed thereby well absorb and decompose the force received to achieve better elastic potential energy. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 is an overall assembly view of the spring-type non-pneumatic wheel in the background art;

[0026] Fig. 2 is an enlarged view of a part of the spring-type non-pneumatic wheel in the background art;

[0027] Fig. 3 is a front view of embodiment one;

[0028] Fig. 4 is an axial view of embodiment one;

[0029] Fig. 5 is an exploded view of embodiment one;

[0030] Fig. 6 is a sectional view of the position A-A in Fig. 1;

[0031] Fig. 7 is a partial axial side view of Fig. 6;

[0032] Fig. 8 is a structural exploded schematic view of Fig. 6;

[0033] Fig. 9 is a schematic view of the structure of the damping ring in Embodiment 1;

[0034] Fig. 10 is an axial view of Fig. 9;

[0035] Fig. 11 is an axial view of the inner hub in Embodiment 2;

[0036] Fig. 12 is an overall assembly view of the wheel in Embodiment 2;

[0037] Fig. 13 is an axial view of the inner hub in Embodiment 3;

[0038] Fig. 14 is an overall assembly view of the wheel in Embodiment 3;

[0039] Fig. 15 is a schematic view of the structure of the damping ring in Embodiment 4;

[0040] Fig. 16 is an axial view of Fig. 15;

[0041] Fig. 17 is a schematic view of the structure of the damping ring in Embodiment 5;

[0042] Fig. 18 is an axial view of Fig. 17;

[0043] Fig. 19 is a schematic view of the structure of the damping ring in Embodiment 6;

[0044] Fig. 20 is an axial view of Fig. 19;

[0045] Fig. 21 is a schematic view of the structure of the damping ring in Embodiment 7;

[0046] Fig. 22 is an axial view of Fig. 21;

[0047] Fig. 23 is a schematic view of the structure of the damping ring in Embodiment 8;

[0048] Fig. 24 is an axial view of Fig. 23. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application; obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application, and all other embodiments obtained by a person of ordinary skill in the art without creative work based on the embodiments in the present application, fall within the scope of protection of the present application.

[0050] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be wall-mounted connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements, and those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0052] The conventional pneumatic tire uses air pressure as a medium to support the vehicle body, and has excellent tensile, bending and collision resistance buffering performance. However, when it is pierced by an external sharp object or damaged by other factors, it cannot maintain its original pressure state, causing the tire to lose its supporting function, which can lead to deterioration of vehicle handling and braking performance and may also cause a large safety hazard. Based on this, non-pneumatic tires that do not need to be inflated have been introduced to the market, which use elastic fillers or support bodies to replace the tire pressure design, which can avoid safety accidents caused by loss of air pressure or tire blowout during vehicle operation. Such non-pneumatic tires include solid tires, crushed structure tires, and spring tires, among which the spring tire has the most outstanding stress performance and durability. Referring to Figures 1-2, which show a spring-type non-pneumatic tire mentioned in the background art (where 1 is a common wheel rim, 2 is an inner spring plate rim, 3 is an outer spring plate rim, 4 is a spiral spring, 5 and 6 are fasteners, and 7 is a wheel rubber). The spring-type non-pneumatic tire replaces the inner tire of the common wheel with a radial spiral spring 4 and a spring plate rim 3 to make the tire body have a damping effect, but the spring on the radial face of this structure is limited by the inner and outer spring plate rims, which has poor axial torsional resistance and low elastic synergy efficiency in structural connection, and cannot well buffer and decompose the received force. In addition, the spokes in this structure that serve as the load-bearing part are rigid parts, and the straight rigid load-bearing structure provides load-bearing force in the form of stress bending, which can easily cause a lever effect, resulting in stress amplification, low load-bearing efficiency, and weakened shock resistance.

[0053] Example One

[0054] In order to overcome the above technical problems, the present application provides a shock-absorbing wheel, which is configured as shown in FIGS. 3-10. The shock-absorbing wheel comprises a hub 12, which comprises an outer hub with a tire bead 11 fitted thereon, and an inner hub connected to the outer hub via a shock-absorbing ring 12. The shock-absorbing ring 12 is arranged in a radial array with the elastic units 121 distributed around the hub axis. The present application uses the elastic units 121 in the shock-absorbing ring 12 to replace the conventional pneumatic tire. When in use, the inner hub connected to the elastic units 121 floats up and down synchronously with the elastic units 121 within a certain range to realize overall shock-absorbing of the wheel body, so as to overcome the application defects of the conventional structure, i.e., the plastic stress increases, the load-carrying efficiency decreases, and the shock-absorbing performance weakens when the steel spokes, which are used for load-carrying, are bent.

[0055] The shock-absorbing ring 12 is configured as a circumferential array of elastic units 121, which can be one elastic member or a combination of multiple elastic members. As shown in FIG. 9, the present embodiment specifically illustrates the combination of two elastic members to form the elastic unit 121. The two elastic members are mirror-symmetric and are inserted towards each other along the radial direction of the hub, and are arranged in a circumferential array with the hub axis as the midpoint to form the shock-absorbing ring 12. The elastic member involved is a double-s linear arc spring 121-1, which has three bending portions and two end portions. The elastic unit is fixed by inserting the two end portions into the pin seats 132 on the end faces of the inner and outer hubs, so as to realize the elasticity between the inner and outer hubs. Since the end portions of the arc spring are inserted into the pin seats 132 in the radial direction, and considering the stress deformation characteristics of the arc spring 121-1, in order to make the insertion structure more secure, the two end portions of the arc spring 121-1 are provided with limiting portions for limiting the sliding of the arc spring 121-1 out of the pin seats 132. The limiting portion comprises a first insertion portion penetrating into the pin seat, a second insertion portion parallel to the first insertion portion and having a certain height difference, and a third insertion portion connecting the first insertion portion and the second insertion portion. The third insertion portion is curved, and the insertion hole in the pin seat is straight. The arc spring 121-1 penetrates into the pin seat 132, and the third insertion portion on the limiting portion is opposite to the insertion hole of the pin seat 132 in the penetration direction of the arc spring 121-1. Since the third insertion portion is curved and the insertion hole is straight, the third insertion portion is squeezed and deformed to abut against the insertion hole, so as to make the insertion firm.

[0056] The hub 13 comprises an inner hub and an outer hub. Referring to Fig. 5, the inner hub in the embodiment is symmetrical two-labium, and the rear end surfaces are fused or connected into one body after installation. The inner hub split along the radial surface is provided with an axle hole 131 at the splicing position, and the side of the axle hole 131 is provided with a latch seat 132, and the two sides of the arcuate spring 121-1 are respectively pivoted to the inner hub through the latch seat 132 and the axle hole 131. The arcuate spring 121-1 and the latch seat 132 are connected to the hub through a limiting part. The connecting structure not only can movably connect the arcuate spring 121-1 and the hub together, but also realizes the detachable function between the components. When the arcuate spring 121-1 is damaged at a local position, it is convenient to replace it in real time. The two-labium split inner hub is connected into one body under the pull-together of the latch seat 132 and the arcuate spring 121-1, thereby reducing the cost consumption of the additional connecting parts. Correspondingly, the inner side of the outer hub is provided with a latch seat 132 corresponding to the inner hub, one end of the arcuate spring 121-1 is connected to the inner hub, and the other end is connected to the outer hub. The two arcuate springs 121-1 which are mirror-symmetrical and close to each other not only increase the elastic impedance of the elastic member, but also effectively make up for the potential drawbacks of poor axial torsion resistance of the arcuate spring 121-1, so that the constructed wheel can well absorb and decompose the received force to obtain better elastic potential energy.

[0057] Embodiment two

[0058] Referring to Figs. 11-12, the present application provides a shock-absorbing wheel, which comprises an inner hub, an outer hub, a tire bead 11 sleeved on the outer hub, and a shock-absorbing ring 12 movably connected between the hubs 13. The difference between the embodiment and the above-mentioned embodiment one lies in the limiting structure on the hub, specifically in that the radial surface edges of the inner hub are close to each other to form a clamping seat 133 of the embedded arcuate spring bending part. When the arcuate spring 121-1 moves in the axial direction of the hub 13 under external pressure, the clamping groove 133 is limited and matched with the arcuate spring 121-1 in the opposite direction.

[0059] Embodiment three

[0060] Referring to Figs. 13-14, the difference between the embodiment and the above-mentioned embodiment one lies in the limiting structure on the inner hub. Specifically, the radial surface edges of the inner hub extend outward to form a wedge-shaped groove 134 of the supporting arcuate spring 121-1 bending part. When the arcuate spring 121-1 moves in the axial direction of the hub under external pressure, the wedge-shaped groove 134 pushes the arcuate spring to move in the direction close to the axle hole.

[0061] Embodiment four

[0062] Referring to Figs. 15-16, the difference between this embodiment and the above-mentioned embodiment one is the structural composition of the shock-absorbing ring 12, which is embodied in that the elastic unit 121 contains a single arc spring 121-1, and the arc springs 121-1 are circumferentially arrayed to form the shock-absorbing ring 12.

[0063] Embodiment five

[0064] Referring to Figs. 17-18, the difference between this embodiment and the above-mentioned embodiment one is the structural composition of the shock-absorbing ring 12, which is embodied in that the elastic unit 121 contains a single arc spring 121-1, and the adjacent elastic units 121 are mirror-symmetric and circumferentially arrayed to form the shock-absorbing ring 12.

[0065] Embodiment six

[0066] Referring to Figs. 19-20, the difference between this embodiment and the above-mentioned embodiment one is the structural composition of the shock-absorbing ring 12, which is embodied in that the elastic unit 121 contains two arc springs 121-1, and the two arc springs are mirror-symmetric and face each other along the axial direction of the hub.

[0067] Embodiment seven

[0068] Referring to Figs. 21-22, the difference between this embodiment and the above-mentioned embodiment one is the structural composition of the shock-absorbing ring 12, which is embodied in that the elastic unit 121 contains two arc springs 121-1, and the two arc springs are mirror-symmetric and their ends facing the inner hub are connected.

[0069] Embodiment eight

[0070] Referring to Figs. 23-24, the difference between this embodiment and the above-mentioned embodiment one is the structural composition of the shock-absorbing ring 12, which is embodied in that the elastic unit 121 contains two arc springs 121-1, and the two arc springs are mirror-symmetric and their ends facing the inner hub are connected, and the ends of the arc springs away from the inner hub are connected to the arc springs on the adjacent elastic units.

[0071] The above description and the embodiments are used to explain the scope of protection of the present application, but do not constitute a limitation on the scope of protection of the present application. Through the inspiration of the present application or the above-mentioned embodiments, those skilled in the art can combine the common knowledge, the ordinary technical knowledge in the art and / or the prior art to obtain the modification, equivalent replacement or other improvement of the embodiments of the present application or one part of the technical features by logical analysis, reasoning or limited test, which shall be included in the scope of protection of the present application. Industrial applicability

[0072] The application provides a shock-absorbing wheel, which comprises an inner hub, an outer hub, a tire bead and a shock-absorbing ring movably connected between the inner hub and the outer hub, wherein the shock-absorbing ring is composed of a circumferential array of elastic units, and each elastic unit contains at least one arc spring. The arc springs in the elastic units are arranged in a mirror-symmetrical combination mode to compensate for the application limitation of poor axial torsional resistance of the arc springs. The shock-absorbing ring provided with the arc springs is movably connected between the inner hub and the outer hub to replace the conventional rigid spoke, so that the inner hub can synchronously float up and down with the arc springs within a certain range of compression deformation to realize the same-frequency shock-absorbing. The application overcomes the application defects of the conventional structure, i.e. the plastic stress of the steel spoke used for bearing is increased, the bearing efficiency is reduced, and the anti-shock performance is weakened when the steel spoke is bent under stress. The application has industrial practicability.

Claims

1. A shock absorbing wheel comprising an inner hub, an outer hub and a tire bead (11) which is fitted on the outer hub, characterized in that, The shock-absorbing ring (12) is movably connected between the wheel hubs (13), and is composed of a circumferential array of elastic units (121), each of which contains at least one elastic member, which is an arcuate spring (121-1).

2. A shock absorbing wheel according to claim 1, characterized in that: The arcuate spring is provided with a limiting portion for limiting its sliding out of the bolt seat (132), which includes a first insertion portion penetrating into the bolt seat, a second insertion portion parallel to the first insertion portion and having a certain height difference, and a third insertion portion connecting the first and second insertion portions, which is curved. The arcuate spring (121-1) penetrates into the bolt seat (132), and its limiting portion is opposite to the bolt seat (132) in the penetration direction of the arcuate spring, and the third insertion portion is tightly fitted with the insertion hole in the bolt seat.

3. A shock absorbing wheel according to claim 2, wherein: The radial edge of the inner wheel hub is gathered towards the other to form a clamping seat (133) for embedding the bent portion of the arcuate spring, and the clamping groove (133) is limited in the moving direction of the arcuate spring.

4. A shock absorbing wheel as defined in claim 2 wherein: The radial edge of the inner wheel hub extends outward to form a wedge-shaped groove (134) for supporting the bent portion of the arcuate spring, and the wedge-shaped groove (134) pushes the arcuate spring in the moving direction of the arcuate spring when the arcuate spring moves in the axial direction of the wheel hub under external pressure.

5. A shock absorbing wheel as defined in claim 1 wherein: The wheel hub is symmetrical and has two lobes, and the rear end surfaces of the two lobes are fused or connected into one body after installation.

6. A shock absorbing wheel as defined in claim 1 wherein: The elastic unit (121) contains a single arcuate spring (121-1), and the circumferential array of the arcuate springs forms the shock-absorbing ring (12).

7. A shock absorbing wheel as defined in claim 6 wherein: The elastic unit contains a single arcuate spring, and adjacent elastic units (121) are mirror-symmetrical.

8. A shock absorbing wheel as defined in claim 1 wherein: The elastic unit contains two arcuate springs, and the two arcuate springs are mirror-symmetrical and movably connected along the radial direction of the wheel hub.

9. A shock absorbing wheel as defined in claim 1 wherein: The elastic unit contains two arcuate springs, and the two arcuate springs are mirror-symmetrical and movably connected along the axial direction of the wheel hub.

11. A shock absorbing wheel as defined in claim 1 wherein: The elastic unit contains two arcuate springs, and the two arcuate springs are mirror-symmetrical and connected at the end portions thereof towards the inner wheel hub.

12. A shock absorbing wheel according to claim 11, characterized in that: The end portion of the arcuate spring away from the inner wheel hub is connected with the arcuate spring on the adjacent elastic unit.

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