All-plastic wheel
Through the dual-wheel splicing design and buffer hole structure, the problems of poor vibration cushioning performance and insufficient ground adaptability of the fully plastic wheels are solved, and better load-bearing performance and travel stability are achieved.
Patent Information
- Application Number
- CN202422405541.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-06
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-10-06
AI Technical Summary
The existing all-plastic wheels have weak vibration cushioning performance during travel, resulting in a significant shock sensation of the carrier, and the single-wheel design has weak adaptability to ground unevenness.
It adopts a dual-wheel splicing design, and quickly assembles through the mating structure of the jaws and arc-oriented clamping grooves, and a buffer hole is set on the spokes to cushion vibration. At the same time, a dual bearing design is adopted to improve travel stability and durability.
The wheel structure with good load-bearing performance and smooth travel is achieved, which reduces the vibration of the carrier and improves the adaptability to ground unevenness.
Smart Images
Figure CN223030700U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a full-plastic wheel used on a caster. Background Art
[0002] Casters are used in industrial handling, luggage, baby strollers and other occasions. When carrying heavy objects, casters will be subject to friction for a long time, and they need to face various ground conditions during use, which greatly tests the casters' ability to withstand wear. All-plastic wheels are not only easy to form, but also have better load-bearing and wear-resistant properties, so they are widely used. Existing all-plastic wheels are integrally formed with hard plastic materials. Although they have sufficient load-bearing and wear-resistant properties, their vibration buffering performance during travel is relatively weak, resulting in obvious vibration on the upper carrier, which is particularly prominent on hospital beds or laboratory equipment, so it is necessary to consider making some buffer structure designs. At the same time, casters are often equipped with only one wheel. In order to ensure its load-bearing capacity, the wheel body is made large and heavy, which is more material-consuming, and the single wheel is also less adaptable to uneven ground. Utility Model Content
[0003] The utility model proposes a fully plastic wheel, the purpose of which is to realize a wheel structure with good load-bearing performance and stable travel, which is specifically achieved through the following technical means:
[0004] A fully plastic wheel comprises a left wheel body and a right wheel body which are rotatably assembled together, wherein bosses are arranged on the inner sides of the wheels of the left wheel body and the right wheel body which are opposite to each other, wherein claws and arcuate clamping grooves are arranged on the bosses, wherein the claws and the arcuate clamping grooves are symmetrical with respect to the rotation axis of the wheel body, wherein the left wheel body and the right wheel body are respectively provided with axial holes which penetrate left and right and bearing cavities which share a central axis with the axial holes, wherein bearing assemblies are respectively installed in the two bearing cavities, and wherein the openings of the bearing cavities are located on the outer sides of the wheels.
[0005] Preferably, one end of the arc-shaped docking groove has a clamping interface into which a clamping claw can enter, and the width of the groove is smaller than the clamping interface; the clamping claw is L-shaped, including a vertical section extending from the boss and a horizontal section bent relative to the vertical section.
[0006] Preferably, the spokes of the left wheel body and the right wheel body are provided with a plurality of buffer holes which are arranged circumferentially relative to the rotation axis of the wheel body, and the buffer holes are located at the outer edges of the spokes and penetrate the wheel body from left to right.
[0007] Preferably, a left connecting shaft and a right connecting shaft are provided, wherein the left connecting shaft penetrates from the outside of the left wheel body until it is connected with the right connecting shaft penetrated from the outside of the right wheel body, and the left connecting shaft and the right connecting shaft are fixed by means of threaded connection.
[0008] Preferably, the butt end of the left connecting shaft is provided with a threaded groove, and the butt end of the right connecting shaft is provided with a threaded boss.
[0009] Preferably, clamping portions for allowing a tool to bite and rotate the shaft body are respectively provided at the outer ends of the left shaft coupling and the right shaft coupling.
[0010] Compared with the prior art, the advantages of the present utility model are as follows: The double-wheel splicing design is adopted, not only the weight of each wheel monomer is relatively light and the molding is convenient, but also the combined wheel has better load-bearing performance and better adaptability to uneven ground. In the splicing structure of the wheel monomer, the cooperation structure of a claw and an arc-shaped clamping groove is adopted in this product. Align the claws and the arc-shaped clamping grooves of the left and right wheel bodies and then rotate to smoothly snap the claws into the arc-shaped clamping grooves to achieve connection, and the assembly is fast and convenient. At the same time, a number of buffer holes are provided on the spokes of the wheel monomer. These buffer holes are located at the edge of the spoke (connected to the wheel surface). When encountering uneven ground, the ground squeezes the wheel surface to deform the buffer holes, thereby buffering part of the vibration to a certain extent and reducing the vibration feeling of the carrier. In addition, the double-bearing design of this product makes the travel more stable than the single-bearing structure, and shares the pressure of the carrier to make the product more durable. Description of the Drawings
[0011] Figure 1 It is a schematic assembly structure diagram of a fully plastic wheel.
[0012] Figure 2 It is a schematic disassembly structure diagram of a fully plastic wheel.
[0013] Figure 3 It is a schematic boss structure diagram of a fully plastic wheel.
[0014] Figure 4 It is an assembly schematic diagram of a left wheel body and a right wheel body.
[0015] Figure 5 It is another schematic implementation structure diagram of a fully plastic wheel (outer side of the wheel body). Detailed Embodiment
[0016] The following further describes the solution of this application in conjunction with the drawings:
[0017] See the appendix Figures 1 to 3, the all-plastic wheel includes a left wheel body 11 and a right wheel body 12 that are rotationally spliced. On the inner sides of the wheels of the left wheel body 11 and the right wheel body 12 that face each other, there are bosses 3. On the bosses 3, there are clamping claws 31 and arc-shaped clamping grooves 32. The clamping claws 31 and the arc-shaped clamping grooves 32 are symmetrical with respect to the rotation axis of the wheel body. The left wheel body 11 and the right wheel body 12 are respectively provided with axially penetrating shaft holes 13 and bearing cavities 14 that share the same central axis as the shaft holes 13. Bearing assemblies 4 are respectively installed in the two bearing cavities 14, and the openings of the bearing cavities 14 are located on the outer side of the wheel. This product adopts a double-wheel splicing design, which not only has a relatively light weight of each wheel monomer and is convenient for molding, but also the combined wheel has better load-bearing performance and better adaptability to uneven ground. At the same time, the double-bearing design of this product makes the movement more stable than the single-bearing structure, and shares the carrier pressure to make the product more durable.
[0018] In the splicing structure of the wheel monomer, this product adopts the matching structure of the clamping claws 31 and the arc-shaped clamping grooves 32. Specifically, one end of the groove body 321 of the arc-shaped docking groove 32 has a clamping opening 322 into which the clamping claws can enter, and the width of its groove body 321 is smaller than that of the clamping opening 322; the clamping claws 31 are in an L shape, which includes a vertical section 311 extending from the boss 3 and a horizontal section 312 that is vertically bent relative to the vertical section 311. During assembly, see the appendix Figure 4 , align the clamping claws 31 of the left and right wheel bodies with the clamping openings 322 of the arc-shaped clamping grooves 32 and then rotate to smoothly snap the clamping claws 31 into the groove body 321 of the arc-shaped clamping grooves 32 to achieve connection. The horizontal section 312 of the clamping claws 31 hooks the groove wall of the groove body 321 (the groove body penetrates into the internal space of the boss 3), and the assembly is quick and convenient.
[0019] Furthermore, on the spokes of the left wheel body 11 and the right wheel body 12, there are a plurality of buffer holes 15 arranged circumferentially with respect to the rotation axis of the wheel body. The buffer holes 15 are located on the outer edge of the spokes and penetrate the wheel body from left to right. These buffer holes are located at the edge of the spoke (connected to the wheel surface). When encountering uneven ground, the ground squeezes the wheel surface to deform the buffer holes, thereby buffering part of the vibration to a certain extent and reducing the vibration feeling of the carrier.
[0020] Especially, the shape of the buffer holes can be round holes as shown in the appendix Figure 1 or strip-shaped holes as shown in the appendix Figure 5 . Among them: the deformation space of the round hole is smaller, so the support performance is better, while the deformation space of the strip-shaped hole is larger, so the buffer performance is better. During actual production, the size is selected and designed according to the load requirement.
[0021] Furthermore, the all-plastic wheel is equipped with a left coupling shaft 5 and a right coupling shaft 6. The left coupling shaft 5 penetrates into the all-plastic wheel from the outside of the left wheel body 11 until it is connected to the right coupling shaft 6 that penetrates into the all-plastic wheel from the outside of the right wheel body 12. The left coupling shaft 5 and the right coupling shaft 6 are fixed by means of a threaded connection. Specifically, a threaded groove 51 is provided at the docking end of the left coupling shaft 5, and a threaded stud 61 is provided at the docking end of the right coupling shaft 6. Clamping portions A for allowing a tool to bite and rotate the shaft body are respectively provided at the outer ends of the left coupling shaft 5 and the right coupling shaft 6. When the left coupling shaft 5 and the right coupling shaft 6 respectively penetrate through the bearing assembly 4 to the junction on both sides of the left wheel body 11 and the right wheel body 12, the threaded groove 51 and the threaded stud 61 can be connected by rotating the shaft body of any one of them. The double-bearing design of this product travels more smoothly than the single-bearing structure and shares the carrier pressure to make the product more durable.
[0022] The above preferred embodiments should be regarded as illustrative examples of the implementation modes of the application solutions of the present application. Any technical deductions, substitutions, improvements, etc. that are identical, similar or based on this should be regarded as the protection scope of this patent.
Claims
1. A fully plastic wheel, characterized in that: It includes a left wheel body and a right wheel body that are rotatably assembled. The inner sides of the wheels of the left wheel body and the right wheel body that are opposite to each other are provided with bosses. The bosses are provided with claws and arcuate clamping grooves. The claws and the arcuate clamping grooves are symmetrical with respect to the rotation axis of the wheel body. The left wheel body and the right wheel body are respectively provided with left and right axial holes passing through and a bearing cavity with a common central axis with the axial hole. Bearing assemblies are respectively installed in the two bearing cavities, and the openings of the bearing cavities are located on the outer sides of the wheels.
2. The all-plastic wheel according to claim 1, characterized in that: One end of the arc-shaped docking groove has a clamping interface into which a clamping claw can enter, and the width of the groove is smaller than the clamping interface; the clamping claw is L-shaped, including a vertical section extending from the boss and a horizontal section bent relative to the vertical section.
3. The all-plastic wheel according to claim 1, characterized in that: The spokes of the left wheel body and the right wheel body are provided with a plurality of buffer holes which are arranged circumferentially relative to the rotation axis of the wheel body. The buffer holes are located at the outer edges of the spokes and penetrate the wheel body from left to right.
4. The all-plastic wheel according to claim 3, characterized in that: The buffer hole is a round hole or a strip hole.
5. The all-plastic wheel according to claim 1, characterized in that: A left connecting shaft and a right connecting shaft are provided. The left connecting shaft penetrates from the outside of the left wheel body until it is connected with the right connecting shaft penetrated from the outside of the right wheel body. The left connecting shaft and the right connecting shaft are fixed by threaded connection.
6. The all-plastic wheel according to claim 5, characterized in that: The butt end of the left connecting shaft is provided with a thread groove, and the butt end of the right connecting shaft is provided with a threaded boss.
7. The all-plastic wheel according to claim 5, characterized in that: The outer ends of the left connecting shaft and the right connecting shaft are respectively provided with clamping parts for tools to bite and rotate the shaft body.