CN207535615U - Inflation-free tire - Google Patents

Abstract

The utility model discloses an inflation-free tire, which comprises a tire body, wherein the tire body consists of a wheel shaft piece, a buffer piece and an outer tire piece, and the wheel shaft piece is integrally formed by injection molding and is used for being connected with an axle and a bearing; the inner side of the buffer piece is connected with the outer side of the wheel shaft piece, and the outer side of the buffer piece is connected with the inner side of the outer tire piece; the bolster prints integrated into one piece through 3D, the bolster is provided with the ring portion that a plurality of diameters reduced in proper order from outside to inside, be provided with wavy supporting part between the ring portion, wheel hub and the inner tube of a tyre have been left out, not only effectively alleviate the weight of tire body, the bassinet of being convenient for accomodate and carry, need not moreover to inflate, the damping performance is more stable, the supporting part can absorb external force, the resilience is fast, the travelling comfort and the security of tire have effectively been improved.

Description

A non-inflatable tire

technical field

The utility model relates to a wheel, in particular to an air-free tire.

Background technique

The wheels currently used on baby carriages usually include a wheel hub and a tire body fixed on the wheel hub. The wheel hub is generally made of metal or hard plastic material, which is heavy and inconvenient for storage and handling of baby carriages; the tire body is composed of an inner tube and an outer tire. , the inner tube needs to be inflated, and this structure is easy to be punctured during use, resulting in air leakage or blowout of the inner tube, which is poor in safety; in addition, it needs to be inflated regularly, which is troublesome to operate, and the shock absorption performance of the tire body is also affected by the tire pressure. When the tire pressure is too high, the tire becomes hard and the shock absorption effect is poor. If the tire pressure is too low, the tire becomes flat, which is easy to wear the inner tube and reduce the service life of the inner tube. Therefore, it is practical to design a tire with no inflation and fast rebound new problems to be solved.

Contents of the invention

In order to overcome the deficiencies of the prior art, the utility model provides an air-free tire with fast resilience.

The technical scheme that the utility model solves its technical problem adopts is:

A non-pneumatic tire, comprising a tire body, the tire body is composed of an axle piece, a buffer piece and a tire casing, the inside of the buffer piece is connected to the outside of the axle piece, and the outside is connected to the inside of the tire casing ; The buffer member is provided with a number of circular rings with successively decreasing diameters from the outside to the inside, and wave-shaped support parts are arranged between the rings.

The buffer member is integrally formed, the support portion has a trough and a crest, and the position where the trough is connected to the outer side of the circular portion is the same as the position where the crest is connected to the inner side of the circular portion.

The supporting part is in a wave shape after being cut and laid flat.

A shaft hole is arranged in the middle of the axle member, and bearing cavities communicating with the axle hole are arranged on both sides of the axle member.

The middle part of the buffer member is provided with an axle chamber for accommodating the axle member, the wall of the axle chamber is concaved to form a card slot, and the outer side of the axle member is provided with a block suitable for the card slot .

The outer side of the buffer member is provided with a bump, and the inner side of the tire casing is provided with a groove suitable for the bump.

The outer surface of the tire casing is provided with anti-skid lines.

The beneficial effect of the utility model is that: the tire body of the utility model is composed of a wheel shaft, a buffer and a tire body, and the wheel shaft is integrally injection molded to be connected with the axle and the bearing; the inner side of the buffer is connected with the outer side of the wheel shaft , the outer side is connected with the inner side of the outer tire; the buffer part is integrally formed by 3D printing, and the buffer part is provided with a number of circular parts with decreasing diameters from the outside to the inside, and there are wave-shaped support parts between the ring parts, omitting the hub And the inner tube not only effectively reduces the weight of the tire body, but also facilitates the storage and handling of the stroller, and does not need to be inflated, the shock absorption performance is more stable, the support part can absorb external force, and the resilience is fast, which effectively improves the comfort and safety of the tire.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the front view of the utility model;

Fig. 3 is an enlarged schematic diagram of place A in Fig. 2;

Fig. 4 is a sectional view of the utility model.

Detailed ways

Referring to Figures 1 to 4, a non-inflatable tire includes a tire body, the tire body is composed of an axle part 1, a buffer part 2 and a tire part 3, and the axle part 1 is integrally injection-molded for use with the axle and the bearing connection; the inner side of the buffer member 2 is connected to the outer side of the axle member 1, and the outer side is connected to the inner side of the tire body member 3; the buffer member 2 is integrally formed by 3D printing, and the buffer member 2 is provided with several diameters from the outside to the inside The ring parts 4 are successively reduced, and the wave-shaped support part 5 is arranged between the ring parts 4, and the wheel hub and the inner tube are omitted, which not only effectively reduces the weight of the tire body, but also facilitates the storage and transportation of the stroller, and does not need to be inflated. The shock absorption performance is more stable, the support part can absorb external force, and the resilience is fast, which effectively improves the comfort and safety of the tire.

In this embodiment, the support portion 5 is in a wave shape after being cut and flattened. The support portion 5 has a trough 6 and a peak 7. The position where the peak 7 is connected to the inside of the ring portion 4 is the same, so that the support portion on the outside can better transmit the external force to the support portion on the inside for absorption, and the ring portion 4 plays a role in shaping the support portion 5, improving Resilience of the support part 5.

In this embodiment, the middle part of the axle member 1 is provided with an axle hole 8 for connecting with the axle, and both sides of the axle member 1 are provided with bearing cavities 9 communicating with the axle hole 8. The diameter of the bearing cavity 9 is larger than the diameter of the shaft hole 8 , and the bearing is installed in the bearing cavity 9 . The middle part of the buffer member 2 is provided with an axle chamber for accommodating the axle member 1, the wall of the axle chamber is concaved to form a card slot, and the outer side of the axle member 1 is provided with a When assembling, the axle member 1 is installed in the axle cavity, and the retaining block 10 is inserted into the groove, and the installation is firm. The outer side of the buffer member 2 is provided with a bump 11, and the inner side of the tire cover 3 is provided with a groove suitable for the bump 11. When assembling, the outer tire member 3 is sleeved on the outer side of the buffer member 2, The bump 11 is inserted into the groove, and the installation is firm.

In this embodiment, the tire cover 3 is made of soft plastic material, such as rubber, EVA (ethylene-vinyl acetate copolymer), TPR (thermoplastic rubber material) or PU (polyurethane material), which has a good shock absorption effect . The raised anti-slip lines on the outer surface of the tire cover 3 increase friction, prevent tires from slipping, and further improve the safety performance of the vehicle.

The above embodiments cannot limit the scope of protection of the present invention, and equivalent modifications and changes made by those in the technical field without departing from the overall concept of the present invention still fall within the scope of the present invention.

Claims (7)

1. A non-inflatable tire, comprising a tire body, characterized in that the tire body is composed of an axle part (1), a buffer part (2) and a tire part (3), and the inner side of the buffer part (2) is connected to The outer side of the axle part (1) is connected, and the outer side is connected with the inner side of the tire part (3); the buffer part (2) is provided with a number of annular parts (4) whose diameters decrease successively from the outside to the inside, so that A corrugated supporting part (5) is arranged between the circular parts (4). 2. The air-free tire according to claim 1, characterized in that the buffer member (2) is integrally formed, the support portion (5) has troughs (6) and crests (7), and the troughs (6) ) is connected to the outer side of the annular part (4) and the position where the peak (7) is connected to the inner side of the annular part (4) is the same. 3. The non-inflatable tire according to claim 2, characterized in that the support portion (5) is wavy after cut and paved. 4. The air-free tire according to any one of claims 1-3, characterized in that an axle hole (8) is provided in the middle of the axle member (1), and both sides of the axle member (1) are provided with There is a bearing chamber (9) communicating with the shaft hole (8). 5. The air-free tire according to any one of claims 1-3, characterized in that the middle part of the buffer member (2) is provided with an axle cavity for accommodating the axle member (1), and the axle cavity The wall of the chamber is concaved to form a card slot, and the outer side of the axle member (1) is provided with a card block (10) adapted to the card slot. 6. The air-free tire according to any one of claims 1-3, characterized in that bumps (11) are provided on the outside of the buffer (2), and bumps (11) are provided on the inside of the tire casing (3). The bumps (11) fit into the grooves. 7. The non-pneumatic tire according to any one of claims 1-3, characterized in that the outer surface of the tire casing (3) is provided with anti-skid lines.