Damping wheel

Abstract

The utility model provides a shock-absorbing wheel which comprises an inner hub, an outer hub, a tread ring and a shock-absorbing ring movably connected between the inner hub and the outer hub, the shock-absorbing ring is composed of elastic units in a circumferential array, and each elastic unit at least comprises one bow spring. The bow-shaped springs in the elastic units make up the application limitation of poor axial torsion resistance of the bow-shaped springs in a mirror symmetry arrangement and combination mode. The damping ring provided with the bow-shaped spring is movably connected between the inner hub and the outer hub to replace a traditional rigid wheel spoke, so that the inner hub can synchronously float up and down with the bow-shaped spring within a certain range along with compression deformation of the bow-shaped spring to realize same-frequency damping; the steel spoke is used for overcoming the application defects that in a traditional structure, when a steel spoke playing a bearing role is stressed and bent, plastic stress is increased, bearing efficiency is reduced, and anti-seismic performance is weakened.

Description

TECHNICAL FIELD

[0001] The utility model relates to tire accessory technical field, especially a shock absorbing wheel. BACKGROUND

[0002] At present, the tire for automobile is mostly pneumatic tire, and the pneumatic wheel has the ability of bearing, shock absorption and force transmission (acceleration, stop and direction change), which is especially suitable for various vehicles, especially bicycles, motorcycles, automobiles and trucks. The shock absorption ability of the tire can also be used for other applications, such as a handcart for transporting medical equipment or sensitive electronic equipment. However, the pneumatic tire has the phenomenon of being easily punctured by sharp objects and causing the vehicle to overturn, especially in the wild, which affects walking due to the inability to repair the tire. Therefore, some run-flat tires (non-pneumatic) have also appeared, such as steel wires being inserted in rubber tires, which are combined together, rely on the deformation of the steel wires for shock absorption, and the deformation of the spokes of the rim with the steel wires solves the problem of tire shock absorption, but the movable spokes can only move vertically at the ground and do not have a shock absorption effect at other parts of the rim, and the tire cannot be replaced after being damaged. The solid tire in the run-flat tire cannot be punctured, but it relies on the compression of the part in contact with the ground to bear the load, and 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.

[0003] In order to overcome these shortcomings, 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 of the structure 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, and the force received cannot be well absorbed and decomposed. Once the local spring is damaged, it will affect the normal use of the entire component. In addition, the spokes in the structure that play a load-bearing role are rigid members, and the linear rigid load-bearing structure provides load-bearing capacity in the form of force bending. This force form is easy to cause the lever effect, resulting in stress amplification, low load-bearing efficiency and weakened shock resistance. UTILITY MODEL CONTENTS

[0004] The utility model provides a shock absorbing wheel to improve the technical deficiencies of the spring type non-pneumatic wheel involved in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides a shock absorbing wheel, which comprises an inner hub, an outer hub and a tire ring sleeved on the outer hub, characterized in that it further comprises a shock absorbing ring movably connected between the hubs, the shock absorbing ring is composed of a circumferential array of elastic units, at least one elastic member is contained in the elastic unit, and the elastic member is an arc spring.

[0006] In a preferred embodiment, an axial hole is provided on the radial surface of the hub, and the bow spring passes through the axial hole and is pivotally connected to the hub.

[0007] In a preferred embodiment, the device further includes a latch seat, which is arranged on a side of the wheel hub facing the shock absorber ring, and the bow spring passes through the latch seat and is movably connected to the wheel hub.

[0008] In a preferred embodiment, the bow spring is provided with a limiting portion for limiting its slipping off the latch seat, the limiting portion comprising a first portion penetrating into the latch seat, a second portion parallel to the first portion and having a certain height difference therewith, and a third portion connecting the first portion and the second portion;

[0009] When the bow-shaped spring penetrates into the latch seat, the limiting portion thereof is in limiting cooperation with the latch seat in a direction opposite to the penetration direction of the bow-shaped spring.

[0010] In a preferred embodiment, the radial edges of the inner hub converge toward each other to form a latch seat that nests the bent portion of the bow spring. When the bow spring moves along the axial direction of the hub under external force, the latch seat cooperates with the bow spring in a limiting manner against the moving direction of the bow spring.

[0011] In a preferred embodiment, the radial edge of the inner hub extends outward to form a wedge-shaped groove that supports the bent portion of the bow spring. When the bow spring moves along the axial direction of the hub under external force, the wedge-shaped groove pushes the bow spring in the opposite direction of its movement.

[0012] In a preferred embodiment, the radial edge of the inner hub is recessed inward to form a pivot hole for inserting the bent portion of the bow spring. The pivot holes on the same radial surface are equidistantly distributed, and the pivot holes on adjacent radial surfaces are staggered.

[0013] In a preferred embodiment, a fastening disc is further included, and the fastening disc is arranged on the outside of the elastic inner hub to fix the elastic unit on the inner hub.

[0014] In a preferred embodiment, the hub is symmetrically divided into two parts, and the rear faces are fused or connected into one piece after installation.

[0015] In a preferred embodiment, the elastic unit contains a single bow-shaped spring, and a circular array of the bow-shaped springs forms a shock-absorbing ring.

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

[0017] In a preferred embodiment, the elastic unit contains two bow-shaped springs, which are mirror-symmetrical and close to each other along the radial direction of the hub.

[0018] In a preferred embodiment, the elastic unit contains two bow-shaped springs, which are mirror-symmetrical and close to each other along the axial direction of the hub.

[0019] In a preferred embodiment, the elastic unit includes two bow-shaped springs, which are mirror-symmetrical and connected at their ends facing the inner hub.

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

[0021] In a preferred embodiment, the elastic unit includes two bow-shaped springs, which are mirror-symmetrical and have ends away from the inner hub connected.

[0022] Compared with the existing technology, the technical solution of the utility model has the following beneficial effects:

[0023] The utility model provides a shock-absorbing wheel, which flexibly connects a shock-absorbing ring provided with a bow-shaped spring between the inner and outer hubs to replace the traditional rigid wheel spokes. When in use, the inner hub pressed against the bow spring floats up and down synchronously with the bow spring within a certain range as the bow spring is compressed and deformed to achieve synchronous shock absorption, so as to overcome the application disadvantages of the traditional structure in which the steel spokes that play a bearing role increase plastic stress, reduce load-bearing efficiency and weaken anti-seismic performance when bent under force.

[0024] The utility model provides a shock-absorbing wheel, in which both ends of a bow spring are detachably connected to a wheel hub, so that a user can more quickly replace a spring component that has elastic fatigue during use of the wheel.

[0025] The utility model provides a shock-absorbing wheel, which arranges and combines the bow springs in the elastic unit in a mirror-image manner, and structurally effectively compensates for the application disadvantage of the bow springs' poor axial torsional resistance, so that the constructed wheel can well absorb and decompose the force it is subjected to and obtain better elastic potential energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall assembly diagram of a spring-type non-pneumatic wheel in the background art;

[0027] Figure 2 A partially enlarged view of a spring-type non-pneumatic wheel in the background art;

[0028] Figure 3 It is a front view of embodiment 1;

[0029] Figure 4 It is an axial view of the first embodiment;

[0030] Figure 5 It is an exploded view of Example 1;

[0031] Figure 6 for Figure 3 Sectional view at the middle AA position;

[0032] Figure 7 for Figure 6 The local axonometric intention;

[0033] Figure 8 for Figure 6 Schematic diagram of the structural decomposition;

[0034] Figure 9 Schematic diagram of the structure of the shock-absorbing ring in Example 1;

[0035] Figure 10 for Figure 9 Axis view of

[0036] Figure 11 This is an axial view of the inner hub in Example 2;

[0037] Figure 12 This is the overall assembly diagram of the wheel in Example 2;

[0038] Figure 13 This is an axial view of the inner hub in Example 3;

[0039] Figure 14 This is the overall assembly diagram of the wheel in Example 3;

[0040] Figure 15 Schematic diagram of the structure of the shock-absorbing ring in Example 4;

[0041] Figure 16 for Figure 15 Axis view of

[0042] Figure 17 Schematic diagram of the structure of the shock-absorbing ring in Example 5;

[0043] Figure 18 for Figure 17 Axis view of

[0044] Figure 19 Schematic diagram of the structure of the shock-absorbing ring in Example 6;

[0045] Figure 20 for Figure 19 Axis view of

[0046] Figure 21 Schematic diagram of the structure of the shock-absorbing ring in Example 7;

[0047] Figure 22 for Figure 21 Axis view of

[0048] Figure 23Schematic diagram of the structure of the shock-absorbing ring in Example 8;

[0049] Figure 24 for Figure 23 Axis view of

[0050] Figure 25 This is an axial view of the inner hub in Example 9;

[0051] Figure 26 This is the overall assembly diagram of the wheel in Example 9;

[0052] Figure 27 Schematic diagram of the structure of the shock-absorbing ring in Example 9;

[0053] Figure 28 for Figure 27 Axis view of . DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0055] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Traditional pneumatic tires use air pressure as a medium to support the vehicle body, and have excellent tensile, bending and anti-collision buffering properties. However, when punctured by external sharp objects or damaged by other factors, they cannot maintain their original pressure state, causing the tire to lose its support function. The resulting deterioration in vehicle handling and braking performance may also lead to greater safety hazards. Based on this, non-pneumatic tires that do not require inflation have been introduced on the market. Their design uses elastic fillers or supports to replace the role of tire pressure, which can avoid safety accidents caused by loss of air pressure or tire blowouts during driving. This type of non-pneumatic tire includes solid tires, crushed structure tires and spring tires, among which spring tires have the most significant force-bearing performance and durability. Reference Figure 1-Figure 2 As shown, it is a spring-type non-pneumatic tire mentioned in the background technology (wherein 1 is an ordinary wheel steel rim, 2 is an inner spring plate steel rim, 3 is an outer spring plate steel rim, 4 is a coil spring, 5 and 6 are fasteners, and 7 is wheel rubber). This spring-type non-pneumatic tire is based on an ordinary wheel, using radial coil springs 4 and spring plate steel rim 3 to replace the inner tube of an ordinary wheel to provide the tire body with a shock-absorbing effect. However, the springs on the radial surface of this structure are restricted by the inner and outer spring plate steel rims, resulting in poor axial torsional resistance and low elastic coordination efficiency in the structural connection, making it unable to effectively buffer and decompose the applied forces. In addition, the spokes that serve as load-bearing parts in this structure are rigid parts, and the linear rigid load-bearing structures all provide load-bearing capacity in the form of stress bending. This form of force easily causes a lever effect, resulting in stress amplification, low load-bearing efficiency, and reduced seismic performance.

[0058] Example 1

[0059] In order to overcome the above technical problems, the present invention provides a shock-absorbing wheel. Figure 3-Figure 10 The structure of the shock-absorbing wheel includes a hub 12, which includes an outer hub with a tread ring 11 sleeved on the outside, and an inner hub movably connected to the outer hub through the shock-absorbing ring 12. The shock-absorbing ring 12 is formed by an elastic unit 121 arranged in a circular array with the hub axis as the center and the center distance as the radius. The utility model uses the elastic unit 121 in the shock-absorbing ring 12 to replace the traditional rigid wheel spokes. When in use, the inner hub connected to the elastic unit 121 floats up and down synchronously with the elastic unit 121 within a certain range as the elastic unit 121 is compressed and deformed to achieve overall shock absorption of the wheel body, so as to overcome the application disadvantages of the traditional structure in which the steel spokes that play a bearing role increase plastic stress, reduce load-bearing efficiency, and weaken seismic performance when bent under force.

[0060] The structure of the shock-absorbing ring 12 includes a circumferential array of elastic units 121, and the elastic unit 121 can be a single elastic member or a combination of multiple elastic members. Figure 9As shown, this embodiment utilizes two elastic members combined to form an elastic unit 121. The two elastic members are mirror-symmetrical and approach each other radially along the wheel hub, forming a circular array centered around the wheel hub axis to form a shock-absorbing ring 12. The elastic member is a bilinear bow spring 121-1 with three bends and two ends. The two ends are plugged into latch seats 132 on the end faces of the inner and outer hubs, respectively, to achieve a flexible connection between the inner and outer hubs. Because the ends of the bow spring are radially plugged into the latch seats 132, and considering the stress-deformation characteristics of the bow spring 121-1, to further secure the plug-in structure, limiters are provided on each end of the bow spring 121-1 to prevent it from slipping off the latch seat 132. These limiters include a first portion that penetrates the latch seat, a second portion that is parallel to the first portion and has a certain height difference, and a third portion that connects the first and second portions. When the bow spring 121-1 is inserted into the latch seat 132, the third part of its limiting portion cooperates with the latch seat 132 in the opposite direction of the insertion direction of the bow spring 121-1 to prevent the bow spring 121-1 and the latch seat 132 from slipping relative to each other due to excessive external extrusion pressure, thereby causing the wheel structure to become unstable and damaged.

[0061] The wheel hub 13 includes an inner wheel hub and an outer wheel hub. Figure 5 As shown, the inner hub in this embodiment is symmetrically divided into two halves, the rear faces of which are fused or connected into one piece after installation. The inner hub, which is spliced ​​along the radial surface, is provided with an axial hole 131 at the splicing position. A latch seat 132 is provided on the side of the axial hole 131. The bow springs 121-1 on either side pass through the latch seats 132 at corresponding positions and are pivotally connected to the inner hub with the axial hole 131. The bow springs 121-1 and latch seats 132 are connected to the hub via a stopper. This connection structure not only allows the bow spring 121-1 to be movably connected to the hub, but also enables detachable components. This facilitates immediate replacement if the bow spring 121-1 is damaged in a certain location. The two halves of the inner hub are connected together by the latch seat 132 and the bow spring 121-1, thereby reducing the cost of additional connectors. Correspondingly, a latch seat 132 corresponding to the inner hub is provided on the inner side surface of the outer hub. One end of the bow spring 121-1 is connected to the inner hub, and the other end is connected to the outer hub. The two bow springs 121-1 that are mirror-symmetrical and close to each other not only increase the elastic impedance of the elastic member, but the symmetrical stacking combination can also effectively compensate for the potential disadvantage of the poor axial torsional performance of the bow spring 121-1, so that the constructed wheel can well absorb and decompose the force it is subjected to and obtain better elastic potential energy.

[0062] Example 2

[0063] refer to Figure 11-12The present embodiment provides a shock-absorbing wheel comprising an inner hub, an outer hub, a tread ring 11 sleeved on the outer hub, and a shock-absorbing ring 12 movably connected between the hubs 13. This embodiment differs from the first embodiment described above in the retaining structure on the hubs. Specifically, the radial edges of the inner hub converge toward each other to form a latching seat 133 that nests the curved portion of the bow spring. When the bow spring 121-1 moves axially along the hub 13 under external pressure, the latching seat 133 engages with the bow spring 121-1 in a position counter to its direction of movement.

[0064] Example 3

[0065] refer to Figure 13-14 This embodiment differs from the first embodiment described above in the retaining structure on the inner hub. Specifically, the radial edge of the inner hub extends outward to form a wedge-shaped groove 134 that supports the curved portion of the bow spring 121-1. When the bow spring 121-1 moves axially in the hub under external pressure, the wedge-shaped groove 134 pushes the bow spring toward the shaft hole.

[0066] Example 4

[0067] refer to Figure 15-16 The difference between this embodiment and the above-mentioned embodiment 1 lies in the structural composition of the shock-absorbing ring 12, which is reflected in that the shock-absorbing ring 12 is composed of a circular array of elastic units 121, and the elastic unit 121 contains a single bow spring 121-1. The circumferential array of the bow springs 121-1 forms the shock-absorbing ring 12.

[0068] Example 5

[0069] refer to Figure 17-18 The difference between this embodiment and the above-mentioned embodiment 1 lies in the structural composition of the shock-absorbing ring 12, which is reflected in that the elastic unit 121 contains a single bow spring 121-1, and adjacent elastic units 121 are mirror-symmetrical and form a circular array to form the shock-absorbing ring 12.

[0070] Example 6

[0071] refer to Figure 19-20 The difference between this embodiment and the above-mentioned embodiment 1 lies in the structural composition of the shock-absorbing ring 12, which is reflected in that the elastic unit 121 contains two bow springs 121-1, and the two bow springs are mirror-symmetrical and approach each other along the axial direction of the hub.

[0072] Example 7

[0073] refer to Figure 21-22The difference between the embodiment and the above-mentioned embodiment one is the structure of the shock absorbing ring 12, which is embodied in that the elastic unit 121 contains two arc springs 121-1, the two arc springs are mirror-symmetrical and the end parts thereof which are close to the inner hub are connected.

[0074] Embodiment eight

[0075] Reference Figure 23-24 The difference between the embodiment and the above-mentioned embodiment one is the structure of the shock absorbing ring 12, which is embodied in that the elastic unit 121 contains two arc springs 121-1, the two arc springs are mirror-symmetrical and the end parts thereof which are close to the inner hub are connected, and the end parts of the arc springs which are away from the inner hub are connected with the arc springs on the adjacent elastic unit.

[0076] Embodiment nine

[0077] Reference Figures 25-28 The difference between the embodiment and the above-mentioned embodiment one is the structure of the shock absorbing ring 12, which is embodied in that the elastic unit 121 contains two arc springs 121-1, the two arc springs are mirror-symmetrical and the end parts thereof which are close to the inner hub are connected, and the end parts of the arc springs which are away from the inner hub are connected with the arc springs on the adjacent elastic unit.

[0078] The above description and embodiment are used to explain the protection scope of the utility model, but do not constitute the limitation to the protection scope of the utility model. Through the inspiration of the utility model or the above-mentioned embodiment, the modification, equivalent replacement or other improvement of the embodiment of the utility model or one part of the technical features can be obtained by the ordinary skill in the art in combination with the common knowledge, the ordinary skill in the art and / or the prior art through the logical analysis, reasoning or limited test, and should be contained in the protection scope of the utility model.

Claims

1. A shock-absorbing wheel comprising an inner hub, an outer hub and a tread ring (11) sleeved on the outer hub, characterized in that: The invention also includes a shock-absorbing ring (12) movably connected between the wheel hubs (13), wherein the shock-absorbing ring (12) is composed of elastic units (121) in a circumferential array, wherein the elastic unit (121) contains at least one elastic member, and the elastic member is a bow spring (121-1).

2. The shock-absorbing wheel according to claim 1, characterized in that: An axial hole (131) is provided on the radial surface of the wheel hub (13), and the bow spring passes through the axial hole (131) and is pivotally connected to the wheel hub (13).

3. The shock-absorbing wheel according to claim 1, characterized in that: It also includes a latch seat (132), which is arranged on the side of the wheel hub (13) facing the shock absorbing ring (12), and the bow spring (121-1) passes through the latch seat (132) and is movably connected to the wheel hub (13).

4. The shock-absorbing wheel according to claim 3, characterized in that: The bow spring is provided with a limiting portion for limiting its slipping off the latch seat (132), the limiting portion comprising a first portion penetrating into the latch seat, a second portion parallel to the first portion and having a certain height difference, and a third portion connecting the first portion and the second portion; When the bow-shaped spring (121-1) penetrates the latch seat (132), the limiting portion thereof is in limiting engagement with the latch seat (132) in a direction counter to the penetration direction of the bow-shaped spring.

5. The shock-absorbing wheel according to claim 2, characterized in that: The radial edges of the inner hub converge toward each other to form a latch seat (133) that nests the bent portion of the bow spring. When the bow spring moves along the axial direction of the hub under external force, the latch seat (133) cooperates with the bow spring in a limiting manner against its moving direction.

6. The shock-absorbing wheel according to claim 2, characterized in that: The radial edge of the inner hub extends outward to form a wedge-shaped groove (134) supporting the bent portion of the bow spring. When the bow spring moves along the axial direction of the hub under external pressure, the wedge-shaped groove (134) pushes the bow spring in the opposite direction of its movement.

7. The shock-absorbing wheel according to claim 2, characterized in that: The radial edge of the inner hub is recessed inward to form a pivot hole (135) for inserting the curved portion of the bow spring. The pivot holes (135) on the same radial surface are equidistantly distributed, and the pivot holes (135) on adjacent radial surfaces are staggered.

8. The shock-absorbing wheel according to claim 7, characterized in that: It also includes a fastening disc (136), which is arranged on the outside of the elastic inner hub and fixes the elastic unit on the inner hub.

9. The shock-absorbing wheel according to claim 1, characterized in that: The hub is symmetrical with two lobes, and the rear faces are fused or connected into one body after installation.

10. The shock-absorbing wheel according to claim 1, characterized in that: The elastic unit (121) contains a single bow-shaped spring (121-1), and a circumferential array of the bow-shaped springs (121-1) forms a shock-absorbing ring (12).

11. The shock-absorbing wheel according to claim 10, characterized in that: The elastic unit contains a single bow spring, and adjacent elastic units (121) are mirror-symmetrical.

12. The shock-absorbing wheel according to claim 1, characterized in that: The elastic unit contains two bow-shaped springs, which are mirror-symmetrical and close to each other along the radial direction of the hub.

13. The shock-absorbing wheel according to claim 1, characterized in that: The elastic unit contains two bow-shaped springs, which are mirror-symmetrical and close to each other along the axial direction of the wheel hub.

14. The shock-absorbing wheel according to claim 1, characterized in that: The elastic unit contains two bow-shaped springs, which are mirror-symmetrical and have ends facing the inner hub connected.

15. The shock-absorbing wheel according to claim 14, characterized in that: The end of the bow spring away from the inner hub is connected to the bow spring on the adjacent elastic unit.

16. The shock-absorbing wheel according to claim 1, characterized in that: The elastic unit contains two bow-shaped springs, which are mirror-symmetrical and have ends away from the inner hub connected.

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