Sealed wheel assembly and toy racing car

Abstract

The utility model discloses a sealed wheel assembly and a toy racing car, the sealed wheel assembly comprises a wheel hub, a tire, an outer cover plate, an inner cover plate and a wheel axle, the tire is sleeved on the periphery of the wheel hub, the outer cover plate is fixed on the outer side of the wheel hub and completely covers the outer side of the wheel hub, the periphery of the outer cover plate is further connected with the outer side of the tire, and the outer cover plate is provided with a concave mounting hole groove; the inner cover plate is fixed to the inner side of the hub and completely covers the inner side of the hub, the periphery of the inner cover plate is further connected with the inner side of the tire, a concave shaft hole groove is formed in the inner cover plate, one end of the axle is fixedly inserted into the shaft hole groove, and the other end of the axle extends inwards. The mounting hole groove is opposite to the shaft hole groove, and a fastener is arranged in the mounting hole groove and used for being fixedly connected with a wheel shaft. According to the utility model, the sealing performance can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of toy cars, specifically to a sealed wheel assembly and a toy racing car. Background Technology

[0002] Currently, toy racing cars, by mimicking the structure of real cars and racing cars, can achieve most of the racing and entertainment functions. However, because the parts used to manufacture toy cars are usually made of plastic, their precision is not high. Plastic is also prone to significant dimensional deformation due to errors in the injection molding process and temperature changes, resulting in poor sealing performance after assembly. This is particularly evident when toy racing cars are in water, such as in water obstacles on a racetrack. The high-speed movement of the car causes water to splash rapidly from the wheels, easily entering the car body. This can damage electronic components or make the car heavier and less capable of racing.

[0003] In addition, when toy race cars are running on land, some fine particles or dust can easily enter the car body along with the rotation of the wheels. Over time, this can damage the electronic components inside the car or increase the weight of the car body, thus reducing its racing performance.

[0004] Chinese utility model patent No. 201621107237.0 discloses a hub battery, including a hub housing, a battery pack built into the hub housing, and an axle connecting the hub housing and the battery pack. The battery pack consists of several individual batteries. The battery pack also includes a cylindrical battery housing that holds the individual batteries, an anti-rotation ring installed on one side of the battery housing, and a battery protection module installed on the other side of the battery housing to prevent overcharging and over-discharging. The individual batteries are arranged in a ring-shaped honeycomb pattern. This utility model achieves waterproof and moisture-proof battery pack by strengthening the sealing of the hub housing. As can be seen from the above, it uses a sealed hub housing to improve the sealing performance of the wheel. However, its structure is relatively bulky and difficult to apply to toy racing cars. When toy racing cars are running at high speeds, it cannot effectively solve the problem of water and dust accumulation or water and dust ingress into the axle area. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a sealed wheel assembly and a toy race car, which can effectively improve the sealing performance.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A sealed wheel assembly includes a hub, a tire, an outer cover plate, an inner cover plate, and an axle. The tire is fitted around the outer periphery of the hub. The outer cover plate is fixed to the outer side of the hub and completely covers the outer side of the hub. The periphery of the outer cover plate also connects to the outer side of the tire. The outer cover plate has a recessed mounting slot. The inner cover plate is fixed to the inner side of the hub and completely covers the inner side of the hub. The periphery of the inner cover plate also connects to the inner side of the tire. The inner cover plate has a recessed axle slot. One end of the axle is fixedly inserted into the axle slot, and the other end of the axle extends inward. The mounting slot is opposite to the axle slot, and a fastener is installed in the mounting slot for fixed connection with the axle.

[0008] Preferably, the inner periphery of the outer cover plate is provided with a first groove, the outer periphery of the wheel hub is provided with a first flange, and the outer side of the tire is provided with a second flange, the first flange and the second flange are engaged together in the first groove.

[0009] Preferably, the outer circumferential surface of the wheel hub is provided with a first flange near the outer side of the wheel hub, the outer side of the tire is tightened and fitted to the first flange, and the second flange protrudes outward from the outer cover plate away from the first flange.

[0010] Preferably, the inner side of the outer cover plate is provided with a first annular reinforcing rib, and the outer side of the outer cover plate arches outward to form an arched portion.

[0011] Preferably, the inner periphery of the inner cover plate is provided with a second groove, the inner periphery of the wheel hub is provided with a third flange, and the inner side of the tire is provided with a fourth flange. The third flange and the fourth flange are engaged together in the second groove.

[0012] Preferably, the outer circumferential surface of the wheel hub is provided with a second flange near the inner side of the wheel hub, the inner side of the tire is tightened and fitted to the second flange, and the fourth flange protrudes outward from the inner cover plate away from the second flange.

[0013] Preferably, the inner side of the inner cover plate is provided with an annular second reinforcing rib, and the middle of the outer side of the inner cover plate is recessed inward to form a recessed portion.

[0014] Preferably, the outer circumferential surface of the tire is provided with a plurality of water-spraying blades, the water-spraying blades being composed of at least two forming a water-spraying assembly, and the water-spraying assemblies being evenly distributed around the outer circumference of the tire.

[0015] A toy race car includes a car body, a shell covering the car body, bearing seats extending from both sides of the car body, and a sealed wheel assembly, with the other end of the wheel axle supported by the bearing seat and extending into the car body, and the end of the bearing seat extending toward the inner cover plate and close to the center of the inner cover plate.

[0016] Preferably, a sealing groove is provided on the outer periphery of the bearing housing, and a sealing ring with an inverted conical cross section is installed on the sealing groove. A positioning step is provided on one side wall of the sealing groove, and the sealing ring is pressed between the housing and the bearing housing.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention effectively covers and seals the connection between the tire and the wheel hub by configuring an inner cover plate and an outer cover plate. This prevents water or dust generated during wheel rotation from entering the wheel hub or tire, achieving higher sealing performance. Specifically, the outer cover plate blocks water or dust from the outside of the wheel hub from entering the wheel hub and axle, thus preventing moisture or dust from entering the toy race car body. The inner cover plate isolates the toy race car from the outside of the wheel hub and also isolates water or dust generated on the inside of the wheel hub. Combined with the integrated design of the wheel axle, it prevents moisture accumulation, giving the wheel assembly higher sealing performance. As a result, the toy race car can maintain high speed for a longer period of operation, enhancing the play and racing experience. Attached Figure Description

[0019] Figure 1 This is a cross-sectional schematic diagram of the wheel assembly of this utility model;

[0020] Figure 2 This is one of the schematic diagrams of the outer cover plate of this utility model;

[0021] Figure 3 This is the second schematic diagram of the outer cover plate of this utility model;

[0022] Figure 4 This is one of the schematic diagrams of the inner cover plate of this utility model;

[0023] Figure 5 This is the second schematic diagram of the inner cover plate of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the toy racing car of this utility model;

[0025] Figure 7 This is a schematic diagram of the installation structure of the sealing ring, bearing seat, and housing of this utility model.

[0026] In the diagram: 1. Hub; 11. First flange; 12. First retaining flange; 13. Second retaining flange; 14. Third flange; 2. Tire; 21. Second flange; 22. Fourth flange; 23. Water skid; 3. Outer cover plate; 31. Mounting hole groove; 32. First slot; 33. First reinforcing rib; 34. Arched portion; 4. Inner cover plate; 41. Axle hole groove; 42. Second slot; 43. Second reinforcing rib; 44. Recessed portion; 5. Axle; 6. Fastener; 10. Wheel assembly; 20. Vehicle body; 30. Shell; 40. Bearing seat; 401. Sealing groove; 402. Positioning step; 50. Sealing ring. Detailed Implementation

[0027] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0028] like Figure 1-5 The sealed wheel assembly shown includes a hub 1, a tire 2, an outer cover plate 3, an inner cover plate 4, and an axle 5. The tire 2 is fitted around the outer periphery of the hub 1. The outer cover plate 3 is fixed to the outer side of the hub 1 and completely covers the outer side of the hub 1. The periphery of the outer cover plate 3 is also connected to the outer side of the tire 2. The outer cover plate 3 has a recessed mounting groove 31. The inner cover plate 4 is fixed to the inner side of the hub 1 and completely covers the inner side of the hub 1. The periphery of the inner cover plate 4 is also connected to the inner side of the tire 2. The inner cover plate 4 has a recessed axle hole groove 41. One end of the axle 5 is fixedly inserted into the axle hole groove 41, and the other end of the axle 5 extends inward. The mounting groove 31 is opposite to the axle hole groove 41, and a fastener 6 is built into the mounting groove 31 for fixed connection with the axle 5.

[0029] By configuring the inner cover plate 4 and the outer cover plate 3, the connection between the tire 2 and the hub 1 is effectively covered and sealed. This makes it difficult for water or dust generated during the rotation of the wheel to enter the hub 1 and the interior of the tire 2, achieving higher sealing performance. Specifically, the outer cover plate 3 prevents water or dust from the outside of the hub 1 from entering the interior of the hub 1 and the axle 5, thereby preventing moisture or dust from entering the toy race car body 20. As for the inner cover plate 4, it isolates the outside of the hub 1 on the one hand, and also isolates water or dust generated on the inside of the hub 1 on the other hand. Combined with the integrated design of the axle 5, it can prevent the accumulation of moisture, giving the wheel assembly 10 a higher sealing performance as a whole. As a result, the toy race car can maintain high speed for a long time, enhancing the play and racing experience.

[0030] The axle 5 is integrated into a single unit, facilitating both fixing and power transmission. During use, fasteners 6 can be installed at the mounting slot 31 to directly fix it to the axle 5, for example, using bolts. This bolted connection also secures the front and rear cover plates to the inner and outer sides of the hub 1. The tire tread pattern of the tire 2 can be customized to meet requirements for waterproofing, slip resistance, or sandy conditions, balancing friction and resistance.

[0031] To securely install and fix the outer cover plate 3, tire 2, and wheel hub 1, the inner periphery of the outer cover plate 3 is provided with a first groove 32, the outer periphery of the wheel hub 1 is provided with a first flange 11, and the outer side of the tire 2 is provided with a second flange 21. The first flange 11 and the second flange 21 are together snapped into the first groove 32. To further securely fix the tire 2, the outer periphery of the wheel hub 1 is provided with a first retaining flange 12 near the outer side of the wheel hub 1. The outer side of the tire 2 is tightened and fitted against the first retaining flange 12, and the second flange 21 protrudes outward from the outer cover plate 3 away from the first retaining flange 12.

[0032] To enhance the strength of the inner cover plate 4 and prevent deformation that could reduce sealing performance, the inner side of the outer cover plate 3 is provided with an annular first reinforcing rib 33, and the outer side of the outer cover plate 3 arches outward to form an arched part 34, which is also more effective at rebounding high-speed water or dust particles.

[0033] To further secure the outer cover plate 3, tire 2, and wheel hub 1, the inner cover plate 4 has a second groove 42 on its inner periphery, the wheel hub 1 has a third flange 14 protruding from its inner periphery, and the tire 2 has a fourth flange 22 on its inner side. The third flange 14 and the fourth flange 22 are engaged together in the second groove 42. To further secure the tire 2, the outer periphery of the wheel hub 1 has a second retaining flange 13 near the inner side of the wheel hub 1. The inner side of the tire 2 is tightened and fitted against the second retaining flange 13, and the fourth flange 22 protrudes outward from the inner cover plate 4, away from the second retaining flange 13.

[0034] To prevent deformation of the inner cover plate 4 from affecting the sealing performance, the inner side of the inner cover plate 4 in this embodiment is provided with an annular second reinforcing rib 43, and the middle of the outer side of the inner cover plate 4 is recessed inward to form a recessed portion 44. The recessed portion 44 can partially accommodate the axle 5 and the bearing seat 40 of the outer vehicle body 20, so as to block moisture and dust from entering the axle 5, bearing seat 40, and vehicle body 20 to the greatest extent.

[0035] To enhance wading capability, the outer circumference of the tire 2 in this embodiment is provided with a plurality of water-spraying blades 23. The water-spraying blades 23 are arranged in groups of at least two to form a water-spraying assembly, which is evenly distributed around the outer circumference of the tire 2. Specifically, in this example, three water-spraying blades 23 are grouped together to form a water-spraying assembly.

[0036] like Figure 6-7As shown, this embodiment of a toy race car includes a car body 20, a housing 30 covering the car body 20, bearing seats 40 extending from both sides of the car body 20, and the aforementioned sealed wheel assembly 10. The other end of the wheel axle 5 is supported by the bearing seat 40 and extends into the car body 20. The end of the bearing seat 40 extends towards the inner cover plate 4 and is close to the center of the inner cover plate 4. The end of the bearing seat 40 extending towards the inner cover plate 4 minimizes the entry of moisture or dust into the space between the bearing seat 40 and the wheel axle 5, improving sealing performance. In particular, the formation of a recess 44 in the center of the inner cover plate 4 further effectively prevents moisture and dust from entering.

[0037] To further improve sealing performance, a sealing groove 401 is formed on the outer periphery of the bearing housing 40. A sealing ring 50 with an inverted conical cross-section is installed on the sealing groove 401. A positioning step 402 is provided on one side wall of the sealing groove 401. The sealing ring 50 is pressed between the housing 30 and the bearing housing 40. Because the housing 30 and the bearing housing 40 jointly compress the sealing ring 50, after the sealing ring 50 is deformed, it can be engaged by the positioning step 402 to maintain the basic shape of the sealing ring 50 and avoid gaps that would reduce sealing performance. Therefore, the design of the sealing groove 401 and the positioning step 402 provides an effective guarantee for the long-term sealing effect of the toy race car.

[0038] The embodiments of this utility model are not limited thereto. Based on the above embodiments of this utility model, using conventional technical knowledge and common methods in the field, without departing from the basic technical idea of ​​this utility model and without conflict, the above preferred embodiments can be modified, replaced or combined in various other forms. All other embodiments obtained fall within the scope of protection of this utility model.

Claims

1. A sealed wheel assembly, characterized in that, The device includes a hub, tire, outer cover plate, inner cover plate, and axle. The tire is fitted around the outer circumference of the hub. The outer cover plate is fixed to the outside of the hub and completely covers the outside of the hub. The periphery of the outer cover plate also connects to the outside of the tire. The outer cover plate has a recessed mounting hole groove. The inner cover plate is fixed to the inside of the hub and completely covers the inside of the hub. The periphery of the inner cover plate also connects to the inside of the tire. The inner cover plate has a recessed axle hole groove. One end of the axle is fixedly inserted into the axle hole groove, and the other end of the axle extends inward. The mounting hole groove is opposite to the axle hole groove, and a fastener is built into the mounting hole groove for fixed connection with the axle.

2. The sealed wheel assembly according to claim 1, characterized in that, The inner periphery of the outer cover plate is provided with a first groove, the outer periphery of the wheel hub is provided with a first flange, and the outer side of the tire is provided with a second flange. The first flange and the second flange are engaged together in the first groove.

3. The sealed wheel assembly according to claim 2, characterized in that, The outer circumference of the wheel hub is provided with a first flange near the outer side of the wheel hub. The outer side of the tire is tightened and fitted to the first flange, and the second flange protrudes outward from the outer cover plate away from the first flange.

4. The sealed wheel assembly according to claim 2, characterized in that, The inner side of the outer cover plate is provided with a first annular reinforcing rib, and the outer side of the outer cover plate arches outward to form an arched part.

5. The sealed wheel assembly according to any one of claims 1-4, characterized in that, The inner periphery of the inner cover plate is provided with a second slot, the inner periphery of the wheel hub is provided with a third flange, and the inner side of the tire is provided with a fourth flange. The third flange and the fourth flange are engaged together in the second slot.

6. The sealed wheel assembly according to claim 5, characterized in that, The outer circumference of the wheel hub is provided with a second flange near the inner side of the wheel hub. The inner side of the tire is tightened and fitted to the second flange, and the fourth flange protrudes outward from the inner cover plate away from the second flange.

7. The sealed wheel assembly according to claim 5, characterized in that, The inner side of the inner cover plate is provided with a second annular reinforcing rib, and the middle of the outer side of the inner cover plate is recessed inward to form a recessed part.

8. The sealed wheel assembly according to claim 1, characterized in that, The outer circumference of the tire is provided with several water-spraying blades, each consisting of at least two water-spraying components, which are evenly distributed around the outer circumference of the tire.

9. A toy race car, characterized in that, It includes a vehicle body, a housing that covers the vehicle body, bearing seats that extend from both sides of the vehicle body, and a sealed wheel assembly as described in any one of claims 1-8, wherein the other end of the wheel axle is supported by the bearing seat and extends into the vehicle body, and the end of the bearing seat extends toward the inner cover plate and is close to the middle of the inner cover plate.

10. The toy race car according to claim 9, characterized in that, A sealing groove is provided on the outer periphery of the bearing housing, and a sealing ring with an inverted conical cross section is installed on the sealing groove. A positioning step is provided on one side wall of the sealing groove, and the sealing ring is pressed between the housing and the bearing housing.

Images