Limit wheel

Abstract

The invention relates to the technical field of limit equipment, in particular to a limit wheel which is based on the design of a double-layer limit wheel, two raw materials are sequentially poured into a mold through cooperation of a limit wheel manufacturing mold structure till demolding and forming, and the double-layer limit wheel moderate in hardness is produced and formed through a series of technological methods. The wearing comfort is improved while the safety performance is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of extreme sports equipment, and more specifically, it relates to an extreme wheel. Background Art

[0002] Extreme sports rollers, also known as extreme wheels, are used to be assembled on special extreme sports equipment, such as extreme skateboards, extreme scooters, and extreme roller skates, etc., playing a core supporting and moving role for them. Due to the high operation difficulty of extreme sports, it is generally very difficult for non-professional instructors or non-professional people to complete independently, and there are often life-threatening risks. Therefore, the safety of extreme wheels is also of utmost importance.

[0003] In addition to ensuring the safety of users, the improvement of another performance of extreme wheels is also the top priority problem to be solved. The comfort of extreme wheels. Due to the high operation difficulty of extreme sports, it largely depends on the physical fitness and skills of the players themselves. Every display of extreme sports actions challenges the limits of human movement at all times. In this case, making the players as comfortable as possible to wear can maximize the success rate of extreme sports actions.

[0004] For this reason, there are many extreme wheels with moderate hardness on the market at present. Most of them adjust the material ratio of the extreme wheels to correspondingly change the softness and hardness of the extreme wheels. However, since the outer layer of the extreme wheels not only requires high-elasticity support and rebound, but also needs to have wear-resistant characteristics, the softer extreme wheels are comfortable to wear but have poor wear resistance, and the harder extreme wheels have good wear resistance but poor wearing comfort. Therefore, it is very difficult to select a suitable extreme wheel. Summary of the Invention

[0005] Aiming at the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide an extreme wheel and a method for manufacturing the extreme wheel. Through this process method, a double-layer extreme wheel with moderate hardness is formed, ensuring safety performance while improving wearing comfort.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions: An extreme wheel, characterized in that it includes an outer support layer, an inner elastic layer, and a wheel core that are sequentially wrapped from outside to inside;

[0007] The extreme wheel is generated based on the production of an extreme wheel manufacturing mold. The extreme wheel manufacturing mold includes a bottom box and a top cover that is buckled on the bottom box. The top cover is buckled on the bottom box to form an inner cavity. A through hole communicating with the inner cavity is provided on the side of the top cover away from the bottom box, and a convex edge is protruded from the inner side of the bottom box towards the direction close to the top cover;

[0008] It also includes a first connecting cylinder and a second connecting cylinder that penetrate through the through hole and can be inserted and matched with the convex edge. The diameter of the first connecting cylinder is larger than the diameter of the second connecting cylinder;

[0009] Method steps for manufacturing an extreme wheel using the mold structure of the described extreme wheel:

[0010] S1: The top cover is snapped onto the bottom box to form an inner cavity. The first connecting cylinder is inserted through the through hole and plugged onto the convex edge. The inner cavity is cut to form a first forming cavity and a second forming cavity. The first forming cavity is in communication with the through hole, and raw material is poured into the first forming cavity through the through hole until it cools to form a solidified outer support layer.

[0011] S2: After the outer support layer is formed and cooled, the first connecting cylinder is removed. Meanwhile, the wheel core is assembled onto the convex edge, and the second connecting cylinder is used to replace the first connecting cylinder and is plugged onto the convex edge. At this time, a third forming cavity is formed between the wheel core and the outer support layer within the inner cavity, and the third forming cavity faces the through hole.

[0012] S3: Another raw material is then poured into the third forming cavity through the through hole to form an inner elastic layer. After the inner elastic layer cools, a connection is formed between the outer support layer and the wheel core through the inner elastic layer to construct an extreme wheel.

[0013] S4: The second connecting cylinder is removed, and then the top cover and the bottom box are demolded to complete the manufacture of the extreme wheel.

[0014] Preferably, in step S2, since the outer support layer is extremely likely to adhere to the end of the first connecting cylinder during cooling and forming, a stepped edge is provided at one end of the first connecting cylinder close to the bottom box, a first clamping end is provided at the end of the first connecting cylinder far from the bottom box, and a limiting groove is formed between the first clamping end and the main body of the first connecting cylinder.

[0015] Preferably, the diameter of the first clamping end is smaller than the diameter of the main body of the first connecting cylinder.

[0016] Preferably, when one end of the second connecting cylinder is plugged onto the convex edge to fix the wheel core, a second clamping end is provided at the end of the second connecting cylinder far from the bottom box, and the diameter of the second clamping end is larger than the diameter of the main body of the second connecting cylinder.

[0017] In summary, the beneficial effects of the present invention are as follows: Based on the design of a double-layer extreme wheel and in cooperation with the mold structure for manufacturing the extreme wheel, two raw materials are successively poured into the mold until demolding and forming. Through this process method, a double-layer extreme wheel with moderate hardness is formed, ensuring safety performance while improving the comfort of wearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the mold for manufacturing the extreme wheel in the first embodiment of the present invention;

[0019] Figure 2It is a schematic structural diagram of the limit wheel in the second embodiment of the present invention;

[0020] Figure 3 It is a cross-sectional view of the limit wheel in the second embodiment of the present invention.

[0021] Reference numerals: 1, bottom box; 11, top cover; 12, inner cavity; 13, through hole; 14, convex edge; 2, first connecting cylinder; 21, stepped edge; 22, first clamping end; 23, limiting groove; 3, second connecting cylinder; 31, second clamping end; 4, limit wheel; 41, outer support layer; 42, inner elastic layer; 43, wheel core. Detailed implementation manners

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component.

[0024] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0026] Embodiment 1: A method for manufacturing the limit wheel 4, see Figure 1, including the application of making a mold structure based on the limit wheel 4. The mold for making the limit wheel 4 includes a bottom box 1 and a top cover 11 buckled on the bottom box 1. The top cover 11 buckled on the bottom box 1 forms an inner cavity 12. A through hole 13 communicating with the inner cavity 12 is arranged on one side of the top cover 11 away from the bottom box 1. A convex edge 14 is protrudingly arranged on the inner side of the bottom box 1 in the direction close to the top cover 11;

[0027] It also includes a first connecting cylinder 2 and a second connecting cylinder 3 that penetrate through the through hole 13 and can be inserted and matched with the convex edge 14. The diameter of the first connecting cylinder 2 is larger than that of the second connecting cylinder 3;

[0028] Method steps for making the limit wheel 4 by applying the mold structure for making the limit wheel 4:

[0029] S1: The top cover 11 is buckled on the bottom box 1 to form an inner cavity 12. The first connecting cylinder 2 is penetrated through the through hole 13 and inserted on the convex edge 14. The inner cavity 12 is cut to form a first forming cavity and a second forming cavity. The first forming cavity communicates with the through hole 13. The raw material is poured into the first forming cavity through the through hole 13 until it cools to form a solidified outer support layer 41;

[0030] S2: After the outer support layer 41 is formed and cooled, the first connecting cylinder 2 is removed. At the same time, the wheel core 43 is assembled on the convex edge 14, and the second connecting cylinder 3 is used to replace the first connecting cylinder 2 and inserted on the convex edge 14. At this time, a third forming cavity is formed between the wheel core 43 and the outer support layer 41 in the inner cavity 12, and the third forming cavity faces the through hole 13;

[0031] S3: Another raw material is poured into the third forming cavity through the through hole 13 to form an inner elastic layer 42. After the inner elastic layer 42 cools, a connection is formed between the outer support layer 41 and the wheel core 43 through the inner elastic layer 42 to construct the limit wheel 4;

[0032] S4: The second connecting cylinder 3 is removed, and then the top cover 11 and the bottom box 1 are demolded to complete the production of the limit wheel 4.

[0033] Based on the design of the double-layer limit wheel 4 in this embodiment, with the cooperation of the mold structure for making the limit wheel 4, two kinds of raw materials are successively poured into the mold until demolding and forming. Through this process method, a double-layer limit wheel 4 with moderate hardness and softness is formed, which improves the wearing comfort while ensuring safety performance.

[0034] Specifically, in step S2, since the outer support layer 41 is extremely likely to adhere to the end of the first connecting cylinder 2 during cooling and forming, a stepped edge 21 is provided at one end of the first connecting cylinder 2 close to the bottom box 1, and a first clamping end 22 is provided at the other end of the first connecting cylinder 2 away from the bottom box 1. A limiting groove 23 is formed between the first clamping end 22 and the main body of the first connecting cylinder 2.

[0035] After the outer support layer 41 of the first connecting cylinder 2 is formed, the first demolding is required, that is, the first connecting cylinder 2 is removed from the mold. For this purpose, through an external connecting piece, such as a manipulator, the first clamping end 22 is grabbed, and a holding point is provided through the limiting groove 23, and the first connecting cylinder 2 is pulled out of the mold. This facilitates the progress of the next step or process.

[0036] Specifically, the diameter of the first clamping end 22 is smaller than the diameter of the main body of the first connecting cylinder 2.

[0037] Since the diameter of the main body of the first connecting cylinder 2 is smaller than the diameter of the through hole 13, space needs to be provided for the raw material to enter the inner cavity 12. At this time, the design that the diameter of the first clamping end 22 is smaller than the diameter of the main body of the first connecting cylinder 2 also provides an avoidance space for the raw material to enter the inner cavity 12.

[0038] Specifically, when one end of the second connecting cylinder 3 is inserted into the convex edge 14 to fix the wheel core 43, a second clamping end 31 is provided at the other end of the second connecting cylinder 3 away from the bottom box 1, and the diameter of the second clamping end 31 is larger than the diameter of the main body of the second connecting cylinder 3.

[0039] At this time, the second connecting cylinder 3 needs to fix the wheel core 43 on the convex edge 14. For this purpose, after one end of the second connecting cylinder 3 is inserted into the convex edge 14, the convex edge 14 and the second connecting cylinder 3 form a fixed clamping on the wheel core 43. The second clamping end 31 is used for external manipulator clamping. Since the diameter of the main body of the second connecting cylinder 3 is only slightly larger than the inner diameter of the wheel core 43, the diameter of the second clamping end 31 needs to be lengthened for easy grasping and convenient disassembly.

[0040] Embodiment 2: A limit wheel 4, see Figure 2 and Figure 3 , the difference between this embodiment and Embodiment 1 is that: for the limit wheel 4 manufactured by the method of manufacturing the limit wheel 4 in Embodiment 1, the limit wheel 4 includes an outer support layer 41, an inner elastic layer 42 and a wheel core 43 which are sequentially wrapped from outside to inside. The hardness of the outer support layer 41 is greater than the hardness of the inner elastic layer 42, and the elasticity of the inner elastic layer 42 is greater than the elasticity of the outer support layer 41.

[0041] The outer support layer 41 and the inner elastic layer 42 are filled with raw materials of plastic or rubber, and are in a fluid state. Due to different raw material ratios, the softness, hardness and elasticity are also different.

[0042] The material of the wheel core 43 is PP, PC or other mixed materials such as nylon fiber. The hardness of the inner elastic layer 42 is controlled between 60HA - 90HA, and the hardness of the outer support layer 41 is controlled between 70HA - 100HA.

[0043] The rest of this embodiment is the same as that of the first embodiment. For the features not explained in this embodiment, the explanations of the first embodiment are adopted and will not be elaborated here.

[0044] The above embodiments are only explanations of the present invention, and they do not limit the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions according to needs, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A limit wheel, characterized in that: It includes an outer supporting layer, an inner elastic layer and a wheel core which are sequentially wrapped from the outside to the inside; The limit wheel is generated based on the production of the limit wheel production mold, and the limit wheel production mold includes a bottom box and a top cover buckled on the bottom box, the top cover is buckled on the bottom box to form an inner cavity, a through hole connected to the inner cavity is provided on the side of the top cover away from the bottom box, and a convex edge is provided on the inner side of the bottom box protruding toward the top cover; It also includes a first connecting tube and a second connecting tube that penetrate the through hole and can be plugged and matched with the convex edge, and the diameter of the first connecting tube is larger than the diameter of the second connecting tube; Method and steps for making a limit wheel using the limit wheel making mold structure: S1: The top cover is buckled on the bottom box to form an inner cavity, the first connecting tube is inserted through the through hole and connected to the convex edge, the inner cavity is cut to form a first forming cavity and a second forming cavity, the first forming cavity is connected to the through hole, and the raw material is poured into the first forming cavity through the through hole until it is cooled to form a solidified outer support layer; S2: After the outer supporting layer is formed and cooled, the first connecting tube is removed, and the wheel core is assembled on the convex edge, and the second connecting tube is used to replace the first connecting tube and plugged into the convex edge. At this time, a third forming cavity is formed in the inner cavity between the wheel core and the outer supporting layer, and the third forming cavity is opposite to the through hole; S3: pouring another raw material into the third forming cavity through the through hole to form an inner elastic layer, and after the inner elastic layer is cooled, connecting the outer supporting layer and the wheel core through the inner elastic layer to form a limit wheel; S4: Remove the second connecting tube, demould the top cover and the bottom box, and complete the production of the extreme wheel.

2. A limit wheel according to claim 1, characterized in that: In step S2, since the outer supporting layer is very easy to fit and adhere to the end of the first connecting tube when it is cooled and formed, a step edge is provided at one end of the first connecting tube close to the base box, and a first clamping end is provided at one end of the first connecting tube away from the base box, and a limiting groove is provided between the first clamping end and the main body of the first connecting tube.

3. A limit wheel according to claim 2, characterized in that: The diameter of the first clamping end is smaller than the diameter of the first connecting tube body.

4. A limit wheel according to claim 1, characterized in that: When one end of the second connecting tube is inserted into the fixed wheel core on the convex edge, a second clamping end is provided at one end of the second connecting tube away from the bottom box, and the diameter of the second clamping end is larger than the diameter of the second connecting tube body.

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