Low-wind-resistance wheel core

Abstract

The utility model discloses a low wind resistance wheel core which comprises a wheel core inner ring, a wheel core outer ring and a spoke, the spoke is connected with the wheel core inner ring and the wheel core outer ring, the spoke comprises a plurality of paddle-shaped wheel spokes, and air inducing holes are formed in the wheel spokes in a penetrating mode. The utility model aims to solve the technical problems in the prior art, and provides the low-wind-resistance wheel core which can reduce the wind resistance difference between the two sides of the wheel core and reduce the overall weight of the wheel core.

Description

Technical Field

[0001] This utility model relates to the field of sporting goods technology, specifically to a low wind resistance wheel core. Background Technology

[0002] In daily life, roller skating is a great means of transportation; in the field of sports, there are various competitions, and in these competitions, especially in speed skating, the performance of roller skates is of particular importance; when talking about roller skates, we must mention the wheels. Because the wheels are non-drive wheels, the blades have a certain angle during rotation, which can easily cause different wind resistance on both sides of the wheel, affecting the comfort and stability of high-speed skating. Utility Model Content

[0003] 1. Technical problem to be solved by the utility model

[0004] The purpose of this utility model is to solve the technical problems existing in the prior art and provide a low wind resistance wheel core, which can reduce the wind resistance difference on both sides of the wheel core and reduce the overall weight of the wheel core.

[0005] 2. Technical Solution

[0006] To solve the above problems, the technical solution provided by this utility model is as follows:

[0007] A low-drag wheel core includes an inner ring, an outer ring, and spokes. The spokes connect the inner ring and the outer ring. Each spoke includes a plurality of blade-shaped spoke strips, and air intake holes are provided through the spoke strips.

[0008] Preferably, the inner ring of the wheel hub, the outer ring of the wheel hub, and the spokes are integrally formed.

[0009] Preferably, the air intake hole is integrally formed on the wheel spoke.

[0010] Preferably, the edge of the air vent is provided with a demolding guide surface.

[0011] Preferably, it further includes a thickened portion integrally formed with the spokes, the thickened portion covering the surface of the spokes.

[0012] Preferably, the thickened portion covers both sides of the wheel spokes.

[0013] Preferably, the thickened portion is arranged around the air intake hole and at a distance of more than 1 mm from the air intake hole.

[0014] Preferably, the outer ring of the wheel core is provided with a plurality of limiting holes.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0017] This low-drag wheel core has air intake holes on the spokes. Through the air guiding effect of the air intake holes, the resistance generated when the wind passes through the wheel core can be reduced, thereby reducing the wind resistance difference on both sides of the wheel core. At the same time, the setting of the air intake holes can also reduce the overall weight of the wheel core. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a low wind resistance wheel core proposed in an embodiment of the present utility model;

[0019] Figure 2 This is a side view of a low wind resistance wheel core proposed in an embodiment of the present utility model;

[0020] 1. Inner ring of wheel core; 2. Outer ring of wheel core; 21. Limiting hole; 3. Wheel spoke; 31. Wheel spoke strip; 32. Air vent; 33. Demolding guide surface; 34. Thickened part. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the scope of protection of this utility model.

[0022] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in the prior art and will not be elaborated further here. When a component is perpendicular or approximately perpendicular to another component, it means that the ideal state is perpendicularity, but due to manufacturing and assembly effects, there may be a certain degree of perpendicularity error. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only and do not represent the only possible implementation.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] The terms "first" and "second" in this utility model do not represent specific quantities or orders, but are merely used to distinguish names.

[0025] Combined with appendix Figure 1 and Figure 2 This embodiment of a low-drag wheel core includes an inner ring 1, an outer ring 2, and spokes 3. The inner ring 1 and the outer ring 2 are connected by spokes 3 to form the wheel core. The spokes 3 include a plurality of blade-shaped spoke strips 31. The plurality of spoke strips 31 are equidistantly distributed along the circumference of the wheel core. The inner end of the spoke strips 31 is connected to the inner ring 1, and the outer end of the spoke strips 31 is connected to the outer ring 2. A wind-guiding hole 32 is provided through the spoke strips 31 along the thickness direction.

[0026] This low-drag wheel core has air inlet holes 32 on the spokes 31. Through the air guiding effect of the air inlet holes 32, the resistance generated when the wind passes through the wheel core can be reduced, thereby reducing the wind resistance difference on both sides of the wheel core. At the same time, the setting of the air inlet holes 32 can also reduce the overall weight of the wheel core.

[0027] As a preferred embodiment of this utility model, in order to ensure the overall strength of the wheel core, the inner ring 1, the outer ring 2, and the spokes 3 are integrally formed, and the two ends of the spokes 31 are widened to improve the connection strength between the spokes 3 and the inner and outer rings of the wheel core.

[0028] As a preferred embodiment of this utility model, the air intake hole 32 is integrally formed on the spoke 31. Specifically, the air intake hole 32 is integrally formed during the injection molding process of the wheel core, rather than being opened after the wheel core is formed. This not only ensures the forming quality of the air intake hole 32, but also ensures production efficiency by directly forming the wheel core in one process. The traditional method is to place a molding block at the position of the air intake hole 32. However, considering that the arrangement of the spokes 31 in the wheel core structure is relatively close, it is difficult to demold a large-sized molding block. Therefore, a molding block can be designed as two mutually abutting molding block structures. During the demolding process, the two molding blocks are removed from both sides of the wheel core respectively.

[0029] As a preferred embodiment of this utility model, such as Figure 1As shown, in order to facilitate the rapid demolding of the molded block, the edge of the air inlet 32 ​​is provided with a demolding guide surface 33. Specifically, a chamfer or rounded corner structure can be designed on the edge of the air inlet 32 ​​to be used as a demolding guide surface 33. Compared with a right angle structure, the molded block is smoother when passing through the demolding guide surface 33.

[0030] As a preferred embodiment of this utility model, such as Figure 1 As shown, it also includes a thickened portion 34 integrally formed with the spoke 31. The thickened portion 34 covers the surface of the spoke 31. The thickened portion 34 increases the thickness of the spoke 31 and makes it stronger as a support structure, thereby improving the overall strength of the wheel core. In this embodiment, in order to maintain symmetry, the thickened portion 34 covers both sides of the spoke 31.

[0031] As a preferred embodiment of this utility model, such as Figure 1 As shown, the thickened portion 34 is arranged around the air inlet 32 ​​and is spaced at least 1 mm from the air inlet 32, preferably 2 mm. The portion approximately 2 mm from the air inlet is not thickened, while the remaining portion is thickened to facilitate the demolding of the molded block. Because the thicker the spokes 31, the smaller the distance between adjacent spokes 31, making demolding of the molded block more difficult.

[0032] As a preferred embodiment of this utility model, such as Figure 2 As shown, the outer ring 2 of the wheel core is provided with a plurality of limiting holes 21. The limiting holes 21 are preferably set through the outer ring 2 of the wheel core. During the injection molding of the PU outer ring on the circumferential outer wall of the wheel core, the limiting holes can form a limiting and fixing effect, thereby realizing the fixing of the PU outer ring injection molding and the wheel core.

[0033] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A low-drag wheel core, characterized in that: It includes an inner ring, an outer ring, and spokes. The spokes connect the inner ring and the outer ring. Each spoke includes a plurality of blade-shaped spoke strips, and each spoke strip has a through-hole for air intake.

2. The low wind resistance wheel core according to claim 1, characterized in that: The inner ring of the wheel hub, the outer ring of the wheel hub, and the spokes are integrally formed.

3. A low-drag wheel core according to claim 2, characterized in that: The air intake hole is integrally formed on the wheel spoke.

4. A low-drag wheel core according to claim 3, characterized in that: The edge of the air vent is provided with a demolding guide surface.

5. A low-drag wheel core according to claim 4, characterized in that: It also includes a thickened portion integrally formed with the spokes, the thickened portion covering the surface of the spokes.

6. A low-drag wheel core according to claim 5, characterized in that: The thickened portion covers both sides of the spoke.

7. A low-drag wheel core according to claim 5, characterized in that: The thickened portion is arranged around the air intake hole and is at least 1 mm away from the air intake hole.

8. A low-drag wheel core according to any one of claims 1-7, characterized in that: The outer rim of the wheel hub is provided with several limiting holes.

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