A type of deformation-resistant nylon-coated steel core wheel

Abstract

This application discloses a deformation-resistant nylon-coated steel core wheel, comprising a steel core and a nylon sleeve. The steel core includes an inner shaft portion and an outer skeleton portion. The nylon sleeve is fitted onto the outer wall of the skeleton portion, and the inner wall width of the nylon sleeve is greater than the outer wall width of the skeleton portion, creating a recess between the skeleton portion, the shaft portion, and the inner wall of the nylon sleeve. The nylon-coated steel core wheel further includes a cover plate and a fixing ring plate. The cover plate is disposed at the recessed position to provide support between the inner wall of the nylon sleeve and the outer wall of the shaft portion. The fixing ring plate is adapted to fit and wrap around the mating area of ​​the nylon sleeve and the steel core to prevent deformation of the nylon sleeve within the mating area. The fixing ring plate wraps and abuts against the mating area of ​​the nylon sleeve and the steel core, limiting the deformation of the nylon sleeve in the mating area and providing support to disperse some external forces, thereby improving the service life of the nylon-coated steel core wheel.

Description

Technical Field

[0001] This application relates to the field of nylon wheel technology, and in particular to a deformation-resistant nylon-coated steel core wheel. Background Technology

[0002] Nylon wheels are lightweight and are commonly used in various fields to replace some metal wheels. Nylon wheels can perform the same functions and effects as certain metal parts, and may even be better. Their widespread use is due to their light weight, wear resistance, long service life, and low likelihood of generating frictional sparks. However, pure nylon wheels have slightly lower strength; therefore, some nylon wheels incorporate a steel core to increase structural strength and load-bearing capacity.

[0003] There are generally two production methods for nylon-coated steel core wheels. The first method involves heating and softening the nylon sleeve before pressing the steel core into it. The nylon hardens and bonds to the steel core during cooling. The second method involves placing the steel core into an injection mold and producing the wheel directly through injection molding. However, in actual working conditions, the connection between the nylon and the steel core is subjected to high stress, making it prone to cracking, slippage, and other failures. This results in the wheel's actual service life not reaching its design life. Summary of the Invention

[0004] The purpose of this application is to provide a nylon-coated steel core wheel that prevents relative movement between the nylon and the steel core wheel.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a deformation-resistant nylon-coated steel core wheel, comprising a steel core and a nylon sleeve. The steel core includes an inner shaft portion and an outer skeleton portion. The nylon sleeve is fitted onto the outer wall of the skeleton portion. The width of the inner wall of the nylon sleeve is greater than the width of the outer wall of the skeleton portion, so that a recess is formed between the skeleton portion, the shaft portion, and the inner wall of the nylon sleeve. The nylon-coated steel core wheel further includes a cover plate and a fixing ring plate. The cover plate is disposed at the recessed position to provide support between the inner wall of the nylon sleeve and the outer wall of the shaft portion. The fixing ring plate is adapted to fit and wrap around the mating area of ​​the nylon sleeve and the steel core to prevent the nylon sleeve from deforming within the mating area.

[0006] As a preferred embodiment, the cover plate includes a supporting body and a skirt at the edge. When the cover plate is fixed, the skirt presses the fixing ring plate against the nylon sleeve. A limiting fit structure is provided between the skirt and the fixing ring plate. The limiting fit structure is adapted to restrict relative movement between the fixing ring plate and the nylon sleeve after installation.

[0007] As a preferred embodiment, the skirt edge is provided with a first fixing part, and the fixing ring plate is provided with a second fixing part. The first fixing part and the second fixing part are both arranged in a ring and are mutually concave and convex to form the limiting fit structure.

[0008] As a preferred embodiment, the first fixing part is configured as an annular protrusion, and an arc-shaped mounting groove is formed on the inner bottom of the fixing ring plate. The second fixing part is a limiting block, and multiple limiting blocks are provided and arranged annularly along the inner bottom of the fixing ring plate. The limiting block is an arc-shaped plate with the same curvature as the mounting groove. The limiting block is fixedly disposed in the mounting groove, and the height of the limiting block is greater than the height of the mounting groove. A locking groove is formed on the part of the limiting block that extends out of the mounting groove. The protrusion and the locking groove cooperate to limit the movement.

[0009] As a preferred embodiment, the thickness of the second fixing part is less than the thickness of the fixing ring plate, and after the first fixing part and the second fixing part are engaged, the outer wall of the skirt and the outer wall of the fixing ring plate are connected and smoothly transitioned.

[0010] As a preferred embodiment, the first fixing part is disposed in the middle of the skirt, and the locking groove is formed in the middle of the limiting block.

[0011] As a preferred embodiment, the outer side of the cover plate is provided with reinforcing ribs at intervals, and after installation, the two ends of the reinforcing ribs are respectively connected to the side of the cover plate and the shaft portion.

[0012] As a preferred embodiment, the top of the fixing ring plate is provided with a wrapping part, the top of the nylon sleeve is a convex top, and the wrapping part is adapted to wrap the bottom of the convex top and leave a gap between it and the outer wall of the convex top.

[0013] As a preferred embodiment, the cover plate and the frame are provided with fixing holes at corresponding positions, and the cover plate and the frame are fixed by bolts installed at the fixing holes.

[0014] As a preferred embodiment, the cover plate has a rounded corner at the connection between the support body and the skirt.

[0015] Compared with the prior art, the beneficial effects of this application are as follows:

[0016] The fixed ring plate wraps around and abuts the mating area of ​​the nylon sleeve and the steel core. On the one hand, it restricts the deformation of the nylon sleeve in the mating area, and on the other hand, it can provide support to disperse some of the external force, thereby improving the service life of the nylon-coated steel core wheel. Attached Figure Description

[0017] Figure 1 This is an overall assembly diagram of one embodiment of this application.

[0018] Figure 2 yes Figure 1 Exploded view of the middle section of the structure.

[0019] Figure 3 yes Figure 1 A cross-sectional view of the middle section of the structure.

[0020] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0021] Figure 5 This is a schematic diagram of the fixed ring plate.

[0022] Figure 6 This is a schematic diagram of the interface of the fixed ring plate.

[0023] Figure 7 This is a schematic diagram of the cover plate.

[0024] Figure 8 This is a schematic diagram of the cover plate at the skirt edge.

[0025] In the diagram: 1. Nylon sleeve; 2. Cover plate; 3. Fixing ring plate; 4. Bolt; 5. Reinforcing rib; 6. Steel core; 7. Skirt; 8. Support body; 9. First fixing part; 10. Shaft part; 11. Wrapping part; 12. Second fixing part; 13. Locking groove. Detailed Implementation

[0026] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0028] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0030] Reference Figures 1 to 8 This application proposes a deformation-resistant nylon-coated steel core wheel, comprising a steel core and a nylon sleeve. The steel core includes an inner shaft portion and an outer skeleton portion. The nylon sleeve is fitted onto the outer wall of the skeleton portion. The inner wall width of the nylon sleeve is greater than the outer wall width of the skeleton portion, so that a recess is formed between the skeleton portion, the shaft portion, and the inner wall of the nylon sleeve. The nylon-coated steel core wheel also includes a cover plate and a fixing ring plate. The cover plate is positioned in the recess to provide support between the inner wall of the nylon sleeve and the outer wall of the shaft portion. The fixing ring plate is adapted to fit and wrap around the mating area of ​​the nylon sleeve and the steel core to prevent the nylon sleeve from deforming within the mating area. When a nylon-coated steel core wheel is subjected to pressure, it undergoes elastic deformation. Frequent deformation in the mating area between the nylon sleeve and the steel core can easily lead to cracking or detachment of the mating area, rendering the nylon wheel unusable. Therefore, in this embodiment, a fixing ring plate is used to wrap and abut the mating area. This restricts the deformation of the nylon sleeve in the mating area, effectively preventing frequent deformation of the mating area. On the other hand, it provides support to disperse some of the external force, thereby improving the service life of the nylon-coated steel core wheel.

[0031] Specifically, such as Figure 3 , Figure 4 As shown, the cover plate includes a supporting body and a skirt at the edge. When the cover plate is fixed, the skirt presses the fixing ring plate against the nylon sleeve. A limiting fit structure is provided between the skirt and the fixing ring plate, which is suitable for restricting relative movement between the fixing ring plate and the nylon sleeve after installation. Preferably, a first fixing part is provided on the skirt, and a second fixing part is provided on the fixing ring plate. Both the first and second fixing parts are annularly arranged and mutually interlocking to form a limiting fit structure. The first fixing part is an annular protrusion, and an arc-shaped mounting groove is formed on the inner bottom of the fixing ring plate. The second fixing part is a limiting block. Multiple limiting blocks are provided and are annularly arranged along the inner bottom of the fixing ring plate. The limiting blocks are arc-shaped plates with the same curvature as the mounting groove. The limiting blocks are fixedly installed in the mounting groove, and the height of the limiting blocks is greater than the height of the mounting groove. A locking groove is formed on the part of the limiting block that extends out of the mounting groove. The protrusion and the locking groove cooperate to limit the movement. After mating, the fixing ring plate and the cover plate are as follows: Figure 4As shown, with this fit, the inner cavity formed by the cover plate and the fixing ring plate transitions smoothly, allowing for a good fit with the nylon sleeve. On the other hand, with this first and second fixing parts, the fixing ring plate is not fixed by common methods such as screws. This means that during subsequent use, as the nylon sleeve gradually wears down, the fixing ring plate can be removed after it has worn down to a certain extent. This exposes the mating area at the bottom of the nylon wheel. Furthermore, because the mating area at the bottom is well protected, the wheel can continue to be used for a period of time even after the fixing ring plate is removed.

[0032] The thickness of the second fixing part is less than the thickness of the fixing ring plate. After the first fixing part and the second fixing part are fitted together, the outer wall of the skirt and the outer wall of the fixing ring plate are connected and smoothly transitioned. Figure 4 As shown, Figure 4 As shown, the outer wall of the skirt and the fixing ring plate are at the same height after installation, which helps to ensure the overall appearance of the nylon wheel is neat and smooth.

[0033] like Figure 6 , Figure 7 As shown, the first fixing part is located in the middle of the skirt, and the locking groove is formed in the middle of the limiting block (actually the lower middle part). If the locking groove is located at the bottom of the limiting block, the upward movement of the second fixing part cannot be restricted after the first fixing part and the locking groove are engaged.

[0034] The outer side of the cover plate is equipped with reinforcing ribs at intervals. After installation, the two ends of the reinforcing ribs connect to the side and shaft of the cover plate, respectively. Because the contact area between the cover plate's supporting body, the steel core's shaft, and the nylon sleeve is limited, relying solely on the cover plate's own strength for support can easily lead to cracking under significant forces. Therefore, the cover plate is equipped with... Figure 2 The reinforcing ribs shown are used to increase structural strength, such as... Figure 3 As shown, the protruding parts of the nylon sleeve on both sides of the skeleton will exert downward force during actual use. The reinforcing ribs are set in this direction, thus effectively strengthening the part of the cover plate that is most frequently subjected to stress.

[0035] The top of the fixing ring plate is provided with a wrapping part, and the top of the nylon sleeve is a convex dome. The wrapping part is suitable for wrapping the bottom of the convex dome and leaves a gap between it and the outer wall of the convex dome. The nylon wheel undergoes elastic deformation under high pressure. Because the fixing ring plate provides relatively rigid support to the nylon wheel (i.e., restricts frequent deformation here), and the nylon wheel inevitably undergoes some deformation in actual use, the wrapping part... Figure 4 As shown, there is a certain gap between it and the nylon wheel. This not only preserves the degree of deformation that the nylon wheel can deform, but also limits the deformation of the nylon wheel, preventing it from tearing due to excessive deformation. The wrapping part can also make appropriate contact with the nylon sleeve, thereby dispersing some of the force on the nylon sleeve.

[0036] The cover plate and the frame are provided with fixing holes at corresponding positions, and the cover plate and the frame are fixed together by bolts installed at the fixing holes. Figure 1 As shown, fixing with bolts is a common and convenient method of fixing.

[0037] The cover plate has rounded corners at the connection between the support body and the skirt. On the one hand, the rounded corners can match the corners of the nylon sleeve, thus ensuring relatively good contact between the cover plate and the nylon sleeve. On the other hand, the rounded corners increase the wall thickness at this point, which helps to increase the strength of the connection and ensure the overall strength of the nylon-coated steel core wheel after installation.

[0038] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A deformation-proof nylon steel-cored wheel comprising a steel core and a nylon cover, the steel core comprising an inner shaft portion and an outer skeleton portion, the nylon cover being fitted to the outer wall of the skeleton portion, characterized in that, The inner wall width of the nylon sleeve is greater than the outer wall width of the skeleton portion, so that a recess is formed between the skeleton portion, the shaft portion and the inner wall of the nylon sleeve. The nylon-coated steel core wheel also includes a cover plate and a fixing ring plate. The cover plate is disposed between the inner wall of the nylon sleeve and the outer wall of the shaft portion at the recessed position. The fixing ring plate is adapted to fit and wrap the mating area of ​​the nylon sleeve and the steel core.

2. The anti-deformation nylon steel-cored wheel of claim 1, wherein, The cover plate includes a supporting body and a skirt at the edge. When the cover plate is fixed, the skirt presses the fixing ring plate against the nylon sleeve. A limit fit structure is provided between the skirt and the fixing ring plate. The limit fit structure is adapted to restrict relative movement between the fixing ring plate and the nylon sleeve after installation.

3. The anti-deformation nylon over steel core wheel of claim 2, wherein, The skirt edge is provided with a first fixing part, and the fixing ring plate is provided with a second fixing part. The first fixing part and the second fixing part are both arranged in a ring and are mutually concave and convex to form the limiting fit structure.

4. The anti-deformation nylon cover steel core wheel according to claim 3, wherein, The first fixing part is configured as an annular protrusion, and an arc-shaped mounting groove is formed on the inner bottom of the fixing ring plate. The second fixing part is a limiting block. Multiple limiting blocks are provided and arranged annularly along the inner bottom of the fixing ring plate. The limiting block is an arc-shaped plate with the same curvature as the mounting groove. The limiting block is fixedly installed in the mounting groove, and the height of the limiting block is greater than the height of the mounting groove. The part of the limiting block that extends out of the mounting groove forms a locking groove. The protrusion and the locking groove cooperate to limit the movement.

5. The anti-deformation nylon cover steel core wheel according to claim 4, wherein, The thickness of the second fixing part is less than the thickness of the fixing ring plate. After the first fixing part and the second fixing part are engaged, the outer wall of the skirt and the outer wall of the fixing ring plate are connected and smoothly transitioned.

6. The anti-deformation nylon-coated steel core wheel as described in claim 4, characterized in that, The first fixing part is disposed in the middle of the skirt, and the locking groove is formed in the middle of the limiting block.

7. The anti-deformation nylon-coated steel core wheel as described in claim 1, characterized in that, The outer side of the cover plate is provided with reinforcing ribs at intervals. After installation, the two ends of the reinforcing ribs are respectively connected to the side of the cover plate and the shaft portion.

8. The anti-deformation nylon-coated steel core wheel as described in claim 1, characterized in that, The top of the fixing ring plate is provided with a wrapping part, the top of the nylon sleeve is a convex top, and the wrapping part is adapted to wrap the bottom of the convex top and leave a gap between it and the outer wall of the convex top.

9. The anti-deformation nylon-coated steel core wheel as described in claim 1, characterized in that, The cover plate and the frame are provided with fixing holes at corresponding positions, and the cover plate and the frame are fixed by bolts installed at the fixing holes.

10. The anti-deformation nylon-coated steel core wheel as described in claim 2, characterized in that, The cover plate has a rounded corner at the connection between the support body and the skirt.

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