Trundle structure capable of improving bearing capacity

Abstract

The utility model discloses a trundle structure capable of improving load bearing, and relates to the technical field of roller skates. Comprising a trundle framework, a rubber coating wheel and a supporting shaft, a bearing connecting hole is formed in the middle of the supporting shaft, two outer side flanges are integrally formed on the edge of the top of the trundle framework, at least one inner side flange is arranged between the two outer side flanges, and slopes are formed on the inner sides of the outer side flanges and the two sides of the inner side flanges; a hook groove is formed in the outer side of the outer side flange, hook rings are integrally formed on the two sides of the rubber coating wheel, and the hook rings are matched with the hook groove. After the rubber coating wheel is pressed, force borne by the rubber coating wheel is transmitted to the two outer side flanges and the supporting plate, triangular structures are formed between the X-shaped connecting plate and the trundle framework and between the X-shaped connecting plate and the supporting shaft, and the triangles have good stability, so that the two sides of the trundle framework can be stably supported, and the service life of the trundle is prolonged. Therefore, the hook ring and the hook groove can be stably connected, and the trundle framework is effectively prevented from being separated from the rubber coating wheel.

Description

Technical Field

[0001] The utility model relates to the technical field of roller skates, in particular to a caster structure capable of improving load-bearing capacity. Background Art

[0002] The wheels of common roller skates are composed of an inner buckle and an outer cover. The inner buckle is made of high-strength plastic and is installed on the axle through a ball bearing, and the outer cover is made of elastic plastic and tightly fitted on the circumference of the inner buckle, thus forming a wheel with a solid tire.

[0003] The Chinese utility model patent, authorization announcement number "CN 219558669 U", discloses a new type of roller skate wheel, including an inner buckle and an outer buckle, wherein the inner buckle is formed by a wheel sleeve, a wheel rim and supporting side surfaces on both sides, the wheel sleeve, the wheel rim and the supporting side surfaces surround a hollow inner cavity, the middle part of the wheel rim is arched upward to form a dome, and the top edges of the dome are raised upward to form symmetrical annular flanges. The roller skate wheel of the utility model has the advantages of light weight and high strength, which is conducive to improving the sliding speed and the user experience.

[0004] The above patent solves the technical problems raised in its background technology, but in practical application, the above solution still has certain defects. For example, the inner buckle of the wheel in the above caster structure adopts an integrally formed hollow structure, and the wheel axle sleeve and the wheel rim are connected by supporting side surfaces. Although the strength of the inner buckle is guaranteed and the weight of the inner buckle is greatly reduced, it is difficult to meet the high quality requirements of the product after the wheel is thinned, especially there is a problem that the caster frame and the rubber-coated wheel are easily separated. Utility Model Content

[0005] The purpose of the utility model is to provide a caster structure capable of improving load-bearing capacity, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a caster structure capable of improving load-bearing capacity, comprising a caster frame, a rubber-coated wheel and a support shaft, a bearing connection hole is provided in the middle of the support shaft, two outer flanges are integrally formed at the top edge of the caster frame, at least one inner flange is provided between the two outer flanges, and an inclined surface is formed on the inner side of the outer flange and on both sides of the inner flange;

[0007] A hook groove is formed on the outside of the outer flange, and hook rings are integrally formed on both sides of the rubber-coated wheel, and the hook rings are adapted to the hook grooves;

[0008] A supporting portion is arranged between the caster frame and the supporting shaft.

[0009] Preferably, the number of the inner flange is one.

[0010] Preferably, a step surface is formed between the outer flange and the caster frame, and side covering plates are integrally formed on both sides of the rubber-coated wheel, and the side covering plates are adapted to the step surface.

[0011] Preferably, the support portion comprises a support plate and two groups of support frames, and the two groups of support frames are symmetrically arranged on both sides of the support plate.

[0012] Preferably, arc-shaped surfaces are formed on both sides of the support plate.

[0013] Preferably, a plurality of weight-reducing grooves are equidistantly provided in the middle of the support plate.

[0014] Preferably, each group of the support frames is composed of a plurality of X-shaped connecting plates, which are located directly below the outer flange.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The caster structure capable of improving load-bearing capacity will generate impact force between the rubber-coated wheel and the ground during use (e.g., encountering steps of a certain height or figure skating). At the same height, the impact force is related to the weight of the user. Since there are arc-shaped surfaces on both sides of the support plate, the support plate has better elastic deformation and impact resistance, which reduces damage to the roller skate base due to excessive impact, so that the caster structure can effectively improve the load-bearing capacity.

[0017] In addition, when the rubber-coated wheel is under pressure, the force borne by the rubber-coated wheel is transmitted to the two outer flanges and the support plate. Since a triangular structure is formed between the X-shaped connecting plate and the caster frame and between the X-shaped connecting plate and the support shaft, the triangle has good stability and can provide stable support for both sides of the caster frame, so that the hook ring and the hook groove can form a stable connection, effectively preventing the caster frame and the rubber-coated wheel from separating. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a detailed diagram of the caster frame of the utility model;

[0020] Figure 3 It is a half-section view of the utility model.

[0021] In the figure: 1. caster frame; 101. outer flange; 102. inner flange; 103. inclined surface; 104. hook groove; 2. rubber-coated wheel; 3. support shaft; 4. support frame; 5. support plate; 501. arc surface; 502. weight reduction groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The caster structure in this solution is used in the field of roller skates to solve the problem that the caster wheel in the prior art is difficult to meet the requirements of product testing after being thinned, especially the problem that the caster frame and the rubber-coated wheel are easy to separate.

[0024] like Figure 1-Figure 3 As shown, the utility model provides a technical solution: a caster structure capable of improving load-bearing capacity, comprising a caster frame 1, a rubber-coated wheel 2 and a support shaft 3, wherein the rubber-coated wheel 2 is made of polyurethane material, and the polyurethane-supported caster has advantages in terms of wear resistance, skid resistance, quietness, elasticity and shock absorption, and can provide a stable, comfortable and high-performance sliding experience, and a bearing connection hole is provided in the middle of the support shaft 3, and the caster frame 1 is made of carbon fiber material, because carbon fiber material has the advantages of high strength, high modulus and light weight, and the caster frame 1 and the support shaft 3 made of carbon fiber material will greatly reduce the overall weight of the caster.

[0025] Two outer flanges 101 are integrally formed at the top edge of the caster frame 1, at least one inner flange 102 is arranged between the two outer flanges 101, and inclined surfaces 103 are formed on the inner side of the outer flange 101 and on both sides of the inner flange 102. In a specific embodiment of the present scheme, the number of the inner flange 102 is one.

[0026] like Figure 2 and Figure 3 As shown, after the caster frame 1 is cut away, the outer flange 101 and the inner flange 102 form a slope 103, and the angle of the extension line is 30-60 degrees. In a specific embodiment of the present solution, the angle of the extension line is preferably 30 degrees.

[0027] To ensure a stable connection between the caster frame 1 and the rubber-coated wheel 2, Figure 3 As shown, a hook groove 104 is formed on the outside of the outer flange 101, and hook rings are integrally formed on both sides of the rubber-coated wheel 2, and the hook rings are adapted to the hook groove 104;

[0028] A support portion is provided between the caster frame 1 and the support shaft 3. Figure 3 As shown, the support portion includes a support plate 5 and two groups of support frames 4, and the two groups of support frames 4 are symmetrically arranged on both sides of the support plate 5. Specifically, each group of support frames 4 is composed of a number of equidistant X-shaped connecting plates, which are located directly below the outer flange 101.

[0029] In order to improve the compressive strength of the support plate 5 , arc surfaces 501 are formed on both sides of the support plate 5 .

[0030] In order to reduce the overall weight of the caster, a plurality of weight-reducing grooves 502 are equidistantly provided in the middle of the support plate 5 .

[0031] When the rubber-coated wheel 2 is under pressure, the force borne by the rubber-coated wheel 2 is transmitted to the two outer flanges 101 and the support plate 5. Since a triangular structure is formed between the X-shaped connecting plate and the caster frame 1 and between the X-shaped connecting plate and the support shaft 3, the triangle has good stability and can provide stable support for both sides of the caster frame 1, so that the hook ring and the hook groove 104 can be stably connected, effectively preventing the caster frame 1 and the rubber-coated wheel 2 from separating.

[0032] During use (such as encountering steps of a certain height or figure skating), the rubber-coated wheel 2 will generate impact force with the ground. At the same height, the impact force is related to the weight of the user. Since there are curved surfaces 501 on both sides of the support plate 5, the support plate 5 has better elastic deformation and impact resistance, reducing damage to the roller skate base due to excessive impact, so that the caster structure can effectively improve the load-bearing capacity.

[0033] In order to improve the connection stability of the rubber-coated wheel 2, Figure 3 As shown, a step surface is formed between the outer flange 101 and the caster frame 1, and side covering plates are integrally formed on both sides of the rubber-coated wheel 2, and the side covering plates are adapted to the step surface.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A caster structure capable of improving load-bearing capacity, comprising a caster frame (1), a rubber-coated wheel (2) and a support shaft (3), wherein a bearing connection hole is provided in the middle of the support shaft (3), and characterized in that: The top edge of the caster frame (1) is integrally formed with two outer flanges (101), at least one inner flange (102) is arranged between the two outer flanges (101), and inclined surfaces (103) are formed on the inner side of the outer flange (101) and on both sides of the inner flange (102); A hook groove (104) is formed on the outside of the outer flange (101), and hook rings are integrally formed on both sides of the rubber-coated wheel (2), and the hook rings are matched with the hook grooves (104); A support portion is provided between the caster frame (1) and the support shaft (3).

2. A caster structure capable of improving load-bearing capacity according to claim 1, characterized in that: The number of the inner flange (102) is one.

3. A caster structure capable of improving load-bearing capacity according to claim 1, characterized in that: A step surface is formed between the outer flange (101) and the caster frame (1), and side covering plates are integrally formed on both sides of the rubber-coated wheel (2), and the side covering plates are adapted to the step surface.

4. The caster structure capable of improving load-bearing capacity according to claim 1, characterized in that: The support portion comprises a support plate (5) and two groups of support frames (4), and the two groups of support frames (4) are symmetrically arranged on both sides of the support plate (5).

5. A caster structure capable of improving load-bearing capacity according to claim 4, characterized in that: Arc surfaces (501) are formed on both sides of the support plate (5).

6. A caster structure capable of improving load-bearing capacity according to claim 5, characterized in that: A plurality of weight-reducing grooves (502) are equidistantly arranged in the middle of the support plate (5).

7. The caster structure capable of improving load-bearing capacity according to claim 4, characterized in that: Each group of the support frames (4) is composed of a plurality of X-shaped connecting plates, which are located directly below the outer flange (101).

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