Roller type kite wheel with multiple rollers

Abstract

The utility model discloses a roller type kite wheel with a plurality of rollers, belongs to the field of toys, and solves the problems that a kite wheel in the prior art is large in weight, the gravity center of the kite wheel is biased, and the stress position of an outer wheel of the kite wheel is biased. In the invention, a plurality of rollers are arranged between the inner wheel and the outer wheel; the roller is mounted on the inner wheel through the fixed mandrel device, and the outer ring of the roller can rotate around the fixed mandrel device and is in contact with the raceway on the inner ring surface of the outer wheel; and relative rotation of the outer wheel and the inner wheel is achieved. According to the technical scheme, a plurality of rollers are adopted as a friction structure, so that the weight of the kite wheel is reduced; and meanwhile, the section of the raceway is designed to be arc-shaped or V-shaped, so that the axial bearing capacity of the kite wheel is improved, the friction coefficient and noise are reduced, and the smoothness and stability of rotation are improved.

Description

Technical Field

[0001] This utility model relates to a kite wheel, and more particularly to a roller-type kite wheel with multiple rollers. Background Technology

[0002] Traditional kite reel designs, especially the widely used handheld kite reels, require ample space in the inner reel for easy gripping and control; while the outer reel needs to handle the kite line smoothly, with low noise and a suitable center of gravity. Therefore, the common practice is to install a concentric, large-diameter bearing between the inner and outer reels. This large-diameter bearing significantly increases the kite's weight and cost.

[0003] Traditional designs also involve miniaturizing the bearing and placing it on one side of the inner wheel to avoid the hand grip position and reduce weight and cost; however, this brings problems such as an off-center center of gravity due to the side placement, poor user experience, and off-center stress points on the outer wheel, causing deformation of the outer wheel when the wind is strong when reeling in or releasing the kite line. Utility Model Content

[0004] This invention provides a roller-type kite wheel with multiple rollers, which reduces the weight and cost of the kite wheel and ensures smooth and stable rotation.

[0005] The technical solution adopted by this utility model is a roller-type kite wheel with multiple rollers, including an inner wheel and an outer wheel. The outer wheel is annular, and the inner wheel is installed inside the annular part of the outer wheel. The outer wheel and the inner wheel rotate relative to each other.

[0006] The inner wheel and the outer wheel have a plurality of rollers, which are mounted on the inner wheel or the outer wheel by means of a fixed mandrel device; the inner wheel or the outer wheel has a raceway that mates with the outer ring of the rollers;

[0007] The outer ring of the roller can rotate around the fixed mandrel device, and all rollers are mounted on the same circumference;

[0008] The rotation between the outer wheel and the inner wheel is supported by the rotation of rollers.

[0009] The optimized version of the above-mentioned roller-type kite reel has at least three rollers.

[0010] In the optimized version of the above-mentioned roller-type kite reel with multiple rollers, when the rollers are mounted on the inner wheel, the outer ring of the rollers mates with the raceway on the inner ring surface of the outer wheel; when the rollers are mounted on the outer wheel, the outer ring of the rollers mates with the raceway on the outer ring surface of the inner wheel.

[0011] The optimized version of the above-mentioned roller-type kite wheel with multiple rollers has a raceway cross-sectional shape of circular arc or V-shape, and the outer ring of the roller is matched with the cross-sectional shape of the raceway.

[0012] The optimized version of the above-mentioned roller-type kite wheel with multiple rollers has a raceway cross-sectional shape that is either a convex arc or a V-shape, or a concave arc or a V-shape.

[0013] The advantages of this application are as follows: The technical solution of this application proposes a kite wheel composed of an inner wheel, an outer wheel, and multiple rollers. Using multiple rollers as the rolling structure replaces the large single-ring bearing structure, serving as the rotation device between the inner and outer wheels, significantly reducing the weight and manufacturing cost of the kite wheel. Simultaneously, by designing the outer ring of the rollers and the outer wheel raceway as an arc or V-shaped structure, pure rolling friction between the kite wheel and the rollers is ensured, improving the axial load-bearing capacity of the kite wheel, reducing the coefficient of friction and noise, and improving the smoothness and stability of rotation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of Example 1;

[0015] Figure 2 This is a schematic diagram of the exploded structure of Example 1;

[0016] Figure 3 This is a schematic diagram of the structure of Example 2;

[0017] Figure 4 This is a schematic diagram of the planar structure of Example 3;

[0018] Figure 5 This is a schematic diagram of the planar structure of Example 4;

[0019] Figure 6 A schematic diagram showing the structure of the outer raceway and the outer ring shape of the roller; Detailed Implementation

[0020] The technical features of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] As shown in the figure, this utility model is a roller-type kite reel with multiple rollers, including an inner wheel 1 and an outer wheel 2. The outer wheel 2 is annular, and the inner wheel 1 is installed inside the annulus of the outer wheel 2. The outer wheel 2 rotates relative to the inner wheel 1. In this embodiment, the inner wheel 1 and the outer wheel 2 can be made of polyester material, or they can be made of metal or wood, etc., depending on the actual needs. The inner wheel 1 and the outer wheel 2 can be formed as a single piece, or they can be formed by splicing.

[0023] In this embodiment, the inner wheel 1 is a disc shape. In other embodiments, the inner wheel 1 can be set to other shapes such as rings. The specific shape of the inner wheel 1 can be selected according to actual needs.

[0024] A gripping part can be provided in the middle of the inner wheel 1. In this embodiment, two spaced-apart hollow through holes are constructed in the middle of the inner wheel 1, and the gripping part is the part separated by the two hollow through holes.

[0025] To ensure smooth rotation between the inner wheel 1 and the outer wheel 2, several rollers 3 are arranged between them. These rollers 3 serve both as rotational supports between the inner wheel 1 and the outer wheel 2 and as a means to reduce friction between them. The number of rollers 3 between the inner wheel 1 and the outer wheel 2 is at least three; in this embodiment, the number of rollers 3 is set to six, and all rollers 3 are evenly distributed.

[0026] The outer circumferential surface of the inner wheel 1 has a groove for mounting the roller 3. The groove can be a continuous annular groove or multiple spaced strip grooves. The roller 3 is mounted in the groove of the inner wheel 1 by a fixed mandrel device 4. The outer ring 31 of the roller 3 can rotate around the fixed mandrel device 4.

[0027] In this embodiment, the roller 3 contacts the raceway 21 on the inner ring surface of the outer wheel 2, and the radial cross-sectional shape of the raceway 21 is a concave arc or V-shape.

[0028] In this embodiment, the outer ring 31 of the roller 3 is configured to match the radial cross-sectional shape of the raceway 21, which is a convex arc or V-shape.

[0029] Example 2

[0030] The difference between this embodiment and embodiment 1 is that the radial cross-sectional shape of the raceway 21 is a convex arc or V-shape, and the outer ring 31 of the roller 3 is configured to match the cross-sectional shape of the raceway 21, which is a concave arc or V-shape.

[0031] Example 3

[0032] The difference between this embodiment and embodiment 1 is that the number of rollers 3 is 3.

[0033] The inner circumferential surface of the outer wheel 2 has a groove for mounting the roller 3. The groove can be a continuous annular groove or multiple spaced strip grooves. The roller 3 is mounted in the groove of the outer wheel 2 by a fixing mandrel device 4.

[0034] The outer ring 31 of the roller 3 contacts the raceway 21 on the outer ring surface of the inner wheel 1.

[0035] Example 4

[0036] The difference between this embodiment and embodiment 1 is that the inner circumferential surface of the outer wheel 2 has a groove for mounting the roller 3. The groove can be a continuous annular groove or multiple spaced strip grooves. The roller 3 is mounted in the groove of the outer wheel 2 by a fixing mandrel device 4.

[0037] The outer ring 31 of the roller 3 contacts the raceway 21 on the outer ring surface of the inner wheel 1.

[0038] The radial cross-section of the inner wheel raceway is a convex arc or V-shape. The outer ring 31 of the roller 3 is shaped to match the cross-sectional shape of the inner wheel raceway, and is a concave arc or V-shape.

[0039] Of course, the above description is not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

Claims

1. A roller kite wheel with a plurality of rollers, comprising an inner wheel (1) and an outer wheel (2), the outer wheel (2) being ring-shaped, the inner wheel (1) being mounted in the ring of the outer wheel (2), the outer wheel (2) being rotatable relative to the inner wheel (1); characterized in that: there are a plurality of rollers (3) between the inner wheel (1) and the outer wheel (2), the rollers (3) being mounted on the inner wheel (1) or the outer wheel (2) by means of a fixed core shaft device (4); the inner wheel (1) or the outer wheel (2) has a raceway (21) that cooperates with the outer ring (31) of the roller (3); the outer ring (31) of the roller (3) is rotatable around the fixed core shaft device (4), and all the rollers (3) are mounted on the same circle; the rotation between the outer wheel (2) and the inner wheel (1) is supported by the rotation of the rollers (3); the number of the rollers (3) is at least three; when the roller (3) is mounted on the inner wheel (1), the outer ring (31) of the roller (3) cooperates with the raceway (21) on the inner ring surface of the outer wheel (2); when the roller (3) is mounted on the outer wheel (2), the outer ring (31) of the roller (3) cooperates with the raceway on the outer ring surface of the inner wheel (1); the cross-sectional shape of the raceway (21) is circular arc or V-shaped, and the outer ring (31) of the roller (3) is cooperatively arranged with the cross-sectional shape of the raceway (21); the cross-sectional shape of the raceway (21) is convex circular arc or V-shaped, or concave circular arc or V-shaped. ​ ​ ​ 2. A roller type kite wheel having a plurality of rollers as claimed in claim 1, characterized in that: ​ 3. A roller type kite wheel having a plurality of rollers as claimed in claim 1, characterized in that: ​ 4. A roller type kite wheel having a plurality of rollers as defined in claim 1, characterized in that: ​ 5. A roller type kite wheel having a plurality of rollers as claimed in claim 4, characterized in that: ​

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