TWM658148U - Windproof guide wheel assembly - Google Patents

Abstract

A windproof guide wheel assembly comprises: a guide wheel assembly, comprising a swing arm and a large guide wheel and a small guide wheel clamped by the swing arm, the large guide wheel comprising a fixing part, the fixing part is installed on the inner diameter of the large guide wheel and is formed corresponding to the inner diameter of the large guide wheel; and a shell assembly, installed on both sides of the guide wheel assembly, comprising a left shell body and a right shell body, the left shell body and the right shell body clamp the guide wheel assembly from two sides, and the shell assembly at least covers a portion of the large guide wheel; wherein the swing arm comprises at least two shaft rods, the swing arm rests against at least a portion of the inner diameter of the large guide wheel and forms an eccentric structure with one of the shaft rods and an eccentric ring protruding from any point of the inner diameter of the fixing part.

Description

Windshield guide wheel assembly

A guide wheel assembly, in particular a windproof guide wheel assembly.

As the issue of energy conservation and carbon reduction is gradually being taken seriously, the use of bicycles is becoming more and more popular, and riding bicycles has become a popular sport among professionals and amateurs. In order to seek a better riding experience, improvements to various parts of the bicycle are also becoming more and more popular, such as choosing a bicycle with a gearshift system, or modifying a seat of the bicycle to reduce weight and wind resistance, so as to achieve the goal of increasing the riding speed of the bicycle.

However, the various parts of the bicycle are irregular in shape. For example, a guide wheel installed on the rear wheel of the bicycle to change the speed of the bicycle is affected by wind during riding, causing the guide wheel to shake left and right and produce strange noises. In view of this, how to reduce the air resistance of the guide wheel of the bicycle during riding is one of the goals that the relevant industry attaches great importance to.

In order to solve the problem mentioned in the prior art that the guide wheel is affected by the wind, causing the guide wheel to shake left and right and produce strange noises, the present invention provides a windproof guide wheel assembly, which includes: a guide wheel assembly, including a swing arm and a large guide wheel and a small guide wheel clamped by the swing arm, the large guide wheel including a fixing member, the fixing member is installed on the inner diameter of the large guide wheel and is formed corresponding to the inner diameter of the large guide wheel; and a shell assembly , installed on both sides of the guide wheel assembly, including a left shell and a right shell, the left shell and the right shell clamp the guide wheel assembly from both sides, and the shell assembly at least covers a portion of the large guide wheel; wherein the rocker arm includes at least two shafts, the rocker arm abuts against at least a portion of the inner diameter of the large guide wheel and forms an eccentric structure with one of the shafts and an eccentric ring protruding from any point of the inner diameter of the fixing member.

The rocker arm is in an S-shape and one end of the rocker arm is in a rounded shape.

Among them, at least a part of the fixing part abuts against the rocker arm, and the eccentric ring is formed at the position where the fixing part and the rocker arm abut against each other; when the large guide wheel is installed on the rocker arm, the large guide wheel overlaps the rocker arm with the fixing part, the eccentric ring, and the shaft rod fixes the large guide wheel and the rocker arm.

The shapes of the left shell and the right shell include circular, fan-shaped or semicircular.

Among them, the area of the left shell is slightly smaller than that of the right shell.

Wherein, at least a portion of the left shell and the right shell fits with the edge of the swing arm.

Among them, a windward side of the right shell is a smooth curved surface; the windward side is the forward direction of the bicycle, and the opposite is the leeward side.

The left housing includes a left connecting portion convexly disposed on the left housing at a position corresponding to the inner diameter of the large guide wheel, and a convex portion convexly disposed on the left connecting portion; the right housing includes a right connecting portion convexly disposed on the right housing at a position corresponding to the inner diameter of the large guide wheel, and a concave portion concavely disposed on the right connecting portion; the convex portion and the concave portion are formed correspondingly.

The left shell body is connected to the concave part of the right shell body by the convex part.

The left shell body abuts against the inner diameter of the large guide wheel with the left connecting part; the right shell body abuts against the inner diameter of the large guide wheel with the right connecting part.

The windproof guide wheel assembly provided by the present invention combines the streamlined guide wheel assembly and the shell assembly with a smooth curved surface, providing a simpler appearance, optimizing the problem that the traditional bicycle guide wheel with a sawtooth appearance is easily affected by the wind and causes noise and shaking, and helps to reduce air resistance and minimize the windward area of the windproof guide wheel assembly to the greatest extent, thereby reducing the energy loss of the bicycle riding and improving the operating efficiency, so that the user can have a more comfortable riding experience.

10: Guide wheel assembly

11: Arm swing

111: Shaft

112:Piercing

12: Large guide wheel

121:Fixer

1211: Eccentric perforation

1212: ribs

13: Small guide wheel

20: Shell set

21: Left shell

211: Left connection part

2111: convex part

22: Right shell

221: Right connection part

2211: Concave

Figure 1 is a three-dimensional diagram of the first preferred embodiment of the present invention; Figure 2 is a partial diagram of the first preferred embodiment of the present invention; Figure 3 is a three-dimensional diagram of the second preferred embodiment of the present invention; Figure 4 is an exploded diagram of the second preferred embodiment of the present invention; Figure 5 is a three-dimensional diagram of the third preferred embodiment of the present invention.

The present invention aims to provide a windproof guide wheel assembly that can reduce the wind resistance of a bicycle when riding. The windproof guide wheel assembly is installed on a rear wheel of the bicycle (not shown in the figure). The windproof guide wheel assembly is used to provide stability to the bicycle so that the bicycle can maintain balance during riding. At the same time, due to the streamlined shape of the windproof guide wheel assembly, the windproof guide wheel assembly can reduce the wind force faced by the bicycle during use, reduce the air resistance of the bicycle when riding, and thus increase the speed of a user riding the bicycle.

Please refer to FIG. 1 and FIG. 2. FIG. 1 is a first preferred embodiment of the windproof guide wheel assembly provided by the present invention, comprising a guide wheel set 10. The guide wheel set 10 comprises a swing arm 11, a large guide wheel 12 and a small guide wheel 13. The swing arm 11 is used to connect and fix the large guide wheel 12 and the small guide wheel 13. When in use, the swing arm 11 is coupled to the rear wheel (not shown in the figure) of the bicycle. The shape of the swing arm 11 is not limited. The swing arm 11 is, for example, two pieces of metal and/or composite material overlapped on both sides of the large guide wheel 12 and the small guide wheel 13. In this embodiment, the swing arm 11 is in an S-shape; wherein, one end of the swing arm 11 is in a rounded shape. Aiming at the condition of the bicycle riding at high speed, the rounded shape allows air to flow through the end of the swing arm 11 more smoothly, reducing the resistance generated by the air flow, so that the rounded swing arm 11 can reduce wind resistance to a certain extent, thereby improving the efficiency and speed of the bicycle when riding. The swing arm 11 includes at least two shafts 111, and the two shafts 111 are screwed together with the swing arm 11; preferably, the two shafts 111 are locked to the two ends of the swing arm 11. The two shafts 111 are screwed to the swing arm 11 at positions corresponding to the large guide wheel 12 and the small guide wheel 13, respectively, so that the large guide wheel 12 and the small guide wheel 13 are fixed to the swing arm 11 at intervals and can be movably fixed.

It is worth noting that in the present embodiment, the large guide wheel 12 is eccentrically penetrated by the shaft 111 in the rocker arm 11 to form an eccentric structure. The eccentric structure is, for example, a fixing member 121 installed on the inner diameter of the large guide wheel 12. The fixing member 121 is annularly formed corresponding to the inner diameter of the large guide wheel 12 and includes an eccentric through hole 1211 extending and protruding from any point of the inner diameter of the fixing member 121, and the eccentric through hole 1211 is not coaxial with the center of the fixing member 121; the fixing member 121 includes a convex rib 1212 protruding from the annular surface of the fixing member 121, and the fixing member 121 abuts against a through hole 112 on the rocker arm 11 with at least a portion of the convex rib 1212 to ensure that the fixing member 121 can be fixed to the rocker arm 11. Preferably, the eccentric through hole 1211 is formed at a position where the fixing member 121 and the swing arm 11 abut against each other. When the large guide wheel 12 is mounted on the swing arm 11, the large guide wheel 12 overlaps with the swing arm 11 through the eccentric through hole 1211 of the fixing member 121, and finally the shaft 111 penetrates the large guide wheel 12 and the swing arm 11; because at least a portion of the fixing member 121 abuts against the swing arm 11, the large guide wheel 12 can maintain stable rotation relative to the fixing member 121. At the same time, the eccentric structure reduces the length of the swing arm 11, optimizes the overall volume of the guide wheel assembly 10, and reduces the use of manufacturing materials, thereby achieving the purpose of lightweighting the guide wheel assembly 10 and saving costs.

Please refer to Figures 3 and 4, which are the second preferred embodiment of the windproof guide wheel assembly provided by the present invention. In this embodiment, a shell assembly 20 is mounted on both sides of the guide wheel assembly 10 and the large guide wheel 12 to enhance the wind resistance resistance of the windproof guide wheel assembly and at the same time enhance the protection of the windproof guide wheel assembly to reduce the loss of the guide wheel assembly 10 during use. Preferably, at least a portion of the shell assembly 20 covers the outer periphery of the large guide wheel 12.

The housing assembly 20 includes a left housing 21 and a right housing 22. The shapes of the left housing 21 and the right housing 22 are, for example, circular, sector-shaped or semi-circular, and at least cover a portion of the large guide wheel 12. In this embodiment, the left housing 21 and the right housing 22 are sector-shaped and the area of the left housing 21 is slightly smaller than that of the right housing 22. In addition to simplifying the appearance of the housing assembly 20, it can also reduce the use of materials and lighten the housing assembly 20.

Among them, at least a part of the left shell 21 and the right shell 22 fits with the edge of the swing arm 11, improving the tightness of the guide wheel assembly 10 and the shell assembly 20, making the appearance of the windproof guide wheel assembly smoother, and at the same time reducing the flow resistance of the air around the swing arm 11 to effectively reduce wind resistance.

Please refer to Figures 4 and 5. Figure 5 is one of the preferred embodiments of the windproof guide wheel assembly provided by the present invention. In this embodiment, the shaft 111 can simultaneously penetrate the left shell 21 and the right shell 22, the rocker arm 11, and the large guide wheel 12 and/or the small guide wheel 13. The shaft 111 simultaneously penetrates the left shell 21 and the right shell 22, the rocker arm 11, and the large guide wheel 12 and/or the small guide wheel 13. For example, the left shell 21 and the right shell 22 extend a fixing plate (not shown in the figure) from the left connecting portion 211 and the right connecting portion 221. The fixing plate can be in the shape of a ring and is connected to the shaft 11. 1 correspondingly formed, when the windproof guide wheel assembly is to be assembled with the guide wheel assembly 10 and the shell assembly 20, the swing arm 11 can sequentially overlap the left shell 21, the large guide wheel 12 and/or the small guide wheel 13 and the right shell 22 to form a sandwich shape, and finally the shaft 111 is penetrated and locked, so that the guide wheel assembly 10 can be firmly combined with the shell assembly 20

The right shell 22 has a windward side that is a smooth curved surface, and the windward side is the forward direction of the bicycle, and the reverse side is the leeward side. The right shell 22 with a smooth curved surface can reduce the turbulence and resistance of the air flowing through the windproof guide wheel assembly when the bicycle is riding, thereby reducing the energy loss of the bicycle, especially when riding at high speed. In this embodiment, the right shell 22 presents a smooth curved surface which can be formed by stamping the right shell 22. The stamping method for making the right shell 22 can be to prepare a mold corresponding to the shape of the right shell 22, inject a material for making the right shell 22 into the mold, and after the material is formed into the right shell 22 according to the mold, a stamping method is used to form a smooth curve on the outer surface of the right shell 22. The stamping method can be to prepare a punching machine first, place the right shell 22 on the punching machine, and then use a stamping mold that matches a curvature of the smooth curved surface of the right shell 22 to punch, compress or cut the right shell 22.

The left housing 21 includes a left connecting portion 211 protruding from the left housing 21 corresponding to the inner diameter of the large guide wheel 12, so that the left housing 21 can be engaged with the side of the large guide wheel 12 by the left connecting portion 211, and at least one protrusion 2111 protruding from the left connecting portion 211 of the left housing 21, and the protrusion 2111 is used to connect the left housing 21 and the right housing 22; and the right housing 22 includes a right connecting portion 221 A protrusion is provided on the right shell 22 corresponding to the inner diameter of the large guide wheel 12, so that the right shell 22 can be engaged with the side of the large guide wheel 12 through the right connecting portion 221, and at least one recess 2211 is recessed on the right connecting portion 221 of the right shell 22, and is formed corresponding to the protrusion 2111 of the left shell 21. The left shell 21 is combined with the protrusion 2111 and the recess 2211 of the right shell 22 to form the shell assembly 20. The housing assembly 20 can be detachably assembled on both sides of the guide wheel assembly 10, saving the assembly steps of the windproof guide wheel assembly. When the user wants to install the housing assembly 20 on the guide wheel assembly 10, he only needs to engage the convex part 2111 of the left housing 21 and the concave part 2211 of the right housing 22 from both sides of the guide wheel assembly 10, so that the guide wheel assembly 10 and the housing assembly 20 can be tightly assembled, saving the user's installation cost and reducing the difficulty of installation.

The windproof guide wheel assembly provided by the present invention combines the streamlined guide wheel assembly 10 and the shell assembly 20 with a smooth curved surface, providing a simpler appearance, optimizing the problem that the sawtooth-shaped traditional bicycle guide wheel is easily affected by the wind and causes noise and shaking, and helps to reduce air resistance, minimize the windward area of the windproof guide wheel assembly, and achieve the goal of reducing the energy loss of the bicycle riding and improving the operating efficiency, so that the user can have a more comfortable riding experience.

10: Guide wheel assembly

11: Shake your arms

111: Shaft

12: Large guide wheel

13: Small guide wheel

20: Shell set

Claims (10)

A windproof guide wheel assembly, comprising: a guide wheel assembly, comprising a swing arm and a large guide wheel and a small guide wheel clamped by the swing arm, the large guide wheel comprising a fixing member, the fixing member being mounted on the inner diameter of the large guide wheel and being formed corresponding to the inner diameter of the large guide wheel; and a housing assembly, mounted on both sides of the guide wheel assembly, comprising a left housing and a right housing, the left housing and the right housing clamping the guide wheel assembly from both sides, and the housing assembly at least covering a portion of the large guide wheel; wherein the swing arm comprises at least two shafts, the swing arm abuts against at least a portion of the inner diameter of the large guide wheel and forms an eccentric structure with one of the shafts and an eccentric ring protruding from any point of the inner diameter of the fixing member. In the windproof guide wheel assembly as described in claim 1, the swing arm is S-shaped and one end of the swing arm is rounded. As described in claim 1, the windproof guide wheel assembly, at least a portion of the fixing part abuts against the rocker arm, and the eccentric ring is formed at the position where the fixing part and the rocker arm abut against each other; when the large guide wheel is installed on the rocker arm, the large guide wheel overlaps the rocker arm with the fixing part, the eccentric ring, and the large guide wheel and the rocker arm are fixed by the shaft. As described in claim 1, the windproof guide wheel assembly and the shell assembly are combined in a manner that the swing arm sequentially overlaps the left shell, the large guide wheel and/or the small guide wheel and the right shell. In the windproof guide wheel assembly as described in claim 1, the shapes of the left shell and the right shell include circular, fan-shaped or semicircular. In the windproof guide wheel assembly as described in claim 5, at least a portion of the left shell and the right shell are in contact with the edge of the swing arm. As described in claim 5, the windward side of the right shell is a smooth curved surface; the windward side is the forward direction of the bicycle, and the opposite is the leeward side. As described in claim 6, the windproof guide wheel assembly, the left shell includes a left connecting portion protruding from the left shell at a position corresponding to the inner diameter of the large guide wheel, and a convex portion protruding from the left connecting portion; the right shell includes a right connecting portion protruding from the right shell at a position corresponding to the inner diameter of the large guide wheel, and a concave portion concavely provided on the right connecting portion; the convex portion and the concave portion are formed correspondingly. In the windproof guide wheel assembly as described in claim 8, the left shell is connected to the concave part of the right shell by the convex part. In the windproof guide wheel assembly as described in claim 9, the left shell body abuts against the inner diameter of the large guide wheel with the left connecting portion; the right shell body abuts against the inner diameter of the large guide wheel with the right connecting portion.

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