TWI551503B - Variable speed bike - Google Patents

Description

Multi-stage flywheel for variable speed bicycle

The invention relates to the technical field of variable speed bicycles, in particular to a multi-stage flywheel of a variable speed bicycle.

Generally speaking, the variable speed bicycle is provided with a multi-stage flywheel. The multi-stage flywheel includes a plurality of gears with different outer diameters. When the bicycle is traveling, the chain can be placed on different gears through the shift gear, thereby changing the speed to adapt to different The road conditions and the physical strength of the rider.

As shown in the first figure, the prior art multi-stage flywheel of a variable speed bicycle includes a plurality of gears 101, and a plurality of gears 101 are arranged in order from large to small. Each of the gears 101 has a different outer diameter and a different number of teeth, but has a mounting hole for the same inner diameter for fixed connection with the wheel, and a plurality of gears 101 are fixedly fastened by the screw 102 and the nut 103, and the gears 101 pass through the washers. 104 intervals. In use, when the chain of the shift bicycle is plucked to be engaged with any of the gears 101, the chain will drive the gear 101 to rotate, and then the gear 101 drives the wheel of the shift bicycle through other components (such as Huayi, etc.). (eg, rear wheel) rotates so that the bicycle can move forward. Since each gear 101 has different outer diameters and different numbers of teeth, different speeds are exhibited when sleeved to different gears 101, thereby achieving the function of the shifting of the chain.

However, in the prior art, the multi-stage flywheel of the variable speed bicycle has a gasket between the gears, which is mostly an apron made of ordinary plastic, and has only a gap function. The lubricating oil flows directly from the gasket, and the lubrication on the gear cannot be performed. The oil is better stored and retained, which causes the lubricating oil used for lubrication between the gear and the chain to be easily lost and the lubricating oil is wasted. That is, the multi-stage flywheel of the variable speed bicycle needs frequent lubrication, which is not conducive to the maintenance and use of the variable speed bicycle.

In view of this, how to eliminate the above-mentioned defects is the technical difficulty point that the inventor of the case wants to solve; however, the inventor of this case is based on years of experience in the relevant industry, after many years of painstaking research, trial improvement, finally Successfully researched and completed the case and made The present invention was born to enhance efficacy.

In order to overcome the technical problem of frequent lubrication of a multi-stage flywheel of a prior art variable speed bicycle. The invention provides a multi-stage flywheel of a variable speed bicycle, which adsorbs lubricating oil through a gasket, and uses centrifugal force to disperse lubricating oil between the gear and the chain of the shift bicycle to achieve lubrication. The centrifugal force generated by the rotation of the gears disperses the design of the grease, which is a main feature within the scope of the patent protection of the present invention.

The technical solution adopted by the present invention is as follows: A multi-stage flywheel of a variable speed bicycle includes a plurality of gears for shifting, and a washer for spacing is provided between the gears, and the washer is made of a material capable of adsorbing lubricating oil.

Preferably, the periphery of the gasket is provided with a spring.

Preferably, the gasket is made of animal leather.

Preferably, the gasket is made of cowhide, sheepskin or pigskin.

Preferably, the washer has an annular shape, and the spring is an inner bundle spring surrounded by an annular shape.

Preferably, the plurality of gears are provided with mounting holes, and the mounting holes have the same inner diameter.

Preferably, the inner side of the mounting hole is provided with a gear spline.

Preferably, the plurality of gears are respectively provided with corresponding gear screw holes.

The invention has the beneficial effects that the gasket of the invention can adsorb the lubricating oil, so that the lubricating oil used for lubrication between the gear and the chain of the shift bicycle is not easily lost, that is, the lubricating oil does not flow directly from the gasket, but is adsorbed by the gasket. When the gasket rotates, the centrifugal force is used to dissipate the lubricating oil between the gear and the chain of the variable speed bicycle to achieve the lubrication function, so that the lubricating oil can be fully utilized and the waste of the lubricating oil is avoided, so that the multi-stage flywheel of the variable speed bicycle does not need to be frequently added. Lubricating oil is beneficial to the maintenance and use of variable speed bicycles. Further, the periphery of the gasket of the present invention is provided with a spring, and the spring not only protects the gasket, but also prevents dust and the like from entering the gasket, and further increases the effect of the gasket adsorbing the lubricating oil, so that the lubricating oil must be emitted from the gap of the spring, so the adsorption The effect is better, and the utilization design of the inner bundle spring is also within the protection scope of the present invention.

1‧‧‧ gear

11‧‧‧Installation holes

12‧‧‧ Gear Spline

13‧‧‧Gear screw holes

2‧‧‧Washers

3‧‧‧ Spring

4‧‧‧Locking components

101‧‧‧ Gears

102‧‧‧ screws

103‧‧‧ nuts

104‧‧‧Washers

The first figure is an exploded view of a multi-stage flywheel of a conventional variable speed bicycle.

The second figure is an exploded view of the multi-stage flywheel of the variable speed bicycle of the present invention.

The third figure is a three-dimensional appearance of the gear of the second figure.

The fourth figure is a perspective view of the washer and spring of the multi-stage flywheel of the variable speed bicycle of the present invention.

The fifth figure is a schematic view showing the combined state of the multi-stage flywheel of the variable speed bicycle of the present invention.

For a detailed description of the technical solutions of the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. It is apparent that the described embodiments are part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the described embodiments of the present invention without departing from the scope of the invention are within the scope of the invention.

Referring to Figures 2 to 4, the multi-stage flywheel of the shift bicycle of the present invention includes a plurality of gears 1 for shifting, and a washer 2 for spacing is provided between the gears 1. Of course, the multi-stage flywheel of the shift bicycle belongs to the existing Technology, no more details here.

Wherein, the gasket 2 is made of a material capable of adsorbing lubricating oil, so that the gasket 2 of the present invention has the function of adsorbing lubricating oil, and when the lubricating oil flows to the gasket 2 of the present invention, the lubricating oil does not directly flow from the gasket 2. Passed, but is adsorbed (or absorbed) by the gasket 2, and then, when the washer 2 rotates with the wheel of the shift bicycle (because the shifting bicycle chain drives the gear 1 to rotate, the washer 2 rotates with the gear 1) The centrifugal oil is used to dissipate the lubricating oil adsorbed by the gasket 2 between the gear and the chain of the variable speed bicycle to achieve the lubrication function, so that the multi-stage flywheel of the variable speed bicycle does not need to frequently add lubricating oil, which is beneficial to the maintenance and use of the variable speed bicycle.

Preferably, the periphery of the gasket 2 of the present embodiment is provided with a spring 3, and the spring 3 of the present invention can not only protect the gasket 2, but the spring 3 is made of a metal material, so that the gasket 2 can be protected from being easily worn, and, in this embodiment, In the example, preferably, the washer 2 has an annular shape, and the spring 3 is an inner bundle spring (ie, an inner contraction spring) that surrounds the annular shape, so that the spring 3 is wound perpendicularly to the outer surface of the gasket 2 ( As shown in the third figure, the spring 3 can not only protect the gasket 2, but also prevent dust and the like from entering the gasket 2, and can further increase the effect of the gasket 2 adsorbing the lubricating oil. As a result, the lubricating oil must be dissipated from the gap of the spring 3, so that the gasket 2 and the spring 3 constitute a better adsorption effect. This design is also within the scope of the invention.

In the present embodiment, preferably, the gasket 2 is made of animal leather, for example: Leather, sheepskin, pigskin, etc., because animal leather has a good lubricant adsorption (or absorption) effect. Of course, the gasket 2 of the present invention may also be made of other materials such as cotton-like materials that can absorb lubricating oil and the like. That is, any material capable of adsorbing lubricating oil and slowly dissipating the lubricating oil to the material between the gear 1 and the chain by the centrifugal force of the rotation of the gear 1 and forming the gasket 2 should fall within the protection scope of the present invention.

Referring to FIG. 5 , preferably, a plurality of gears 1 are provided with mounting holes 11 . The inner diameter of the mounting hole 11 is the same. The inner side of the mounting hole 11 is provided with a gear spline 12, and the gear spline 12 is used for arranging the fixed gear 1. The plurality of gears 1 are also provided with corresponding gear screw holes. 13, for at least one locking element 4 to pass through, and the locking element 4 is clamped into the spring 3, thereby fixing the washer 2.

In summary, the present invention skillfully utilizes the principle of centrifugal force to design an adsorbable The lubricating oil washer 2 and the spring 3 are combined, and the lubricating oil can be slowly dissipated between the gear 1 and the chain by rotation to achieve the lubrication function, so that the lubricating oil can be fully utilized to avoid waste of lubricating oil, thereby The multi-stage flywheel of the variable speed bicycle does not need to be frequently lubricated, which is beneficial to the maintenance and use of the variable speed bicycle. Therefore, the combination structure of the gasket 2 and the spring 3 for the spacer of the present invention has a better effect of adsorbing lubricating oil, so that the present invention can be applied to a multi-stage flywheel of various variable speed bicycles; The class flywheel also prevents the splashing of lubricant onto the user during operation.

Finally, it should be noted that the above embodiments are only used to illustrate the technical side of the present invention. The invention is not limited by the scope of the invention, and the invention will be described in detail with reference to the preferred embodiments. It will be understood by those skilled in the art that protected range.

The invention has achieved the desired enhancement under the prior art structure. It is not easy for the skilled person to think about it. Moreover, the invention has not been disclosed before the application, and its progressiveness and practicability have been consistent with the application requirements of the invention patent, and the invention application is filed according to law. You have approved this patent application for this invention to encourage creation.

1‧‧‧ gear

11‧‧‧Installation holes

2‧‧‧Washers

3‧‧‧ Spring

4‧‧‧Locking components

Claims (6)

A multi-stage flywheel of a variable speed bicycle, comprising a plurality of gears for shifting, wherein each of the gears is provided with at least one gasket for spacing, wherein the gasket is made of a material capable of adsorbing lubricating oil, by The centrifugal force generated by the rotation of the gear dissipates lubricating oil for lubrication of each of the gears. The outer side ring of the gasket is provided with a spring, wherein the washer has an annular shape, and the spring is an inner bundle spring surrounded by a ring shape. A multi-stage flywheel of a variable speed bicycle according to claim 1, wherein the gasket is made of animal leather. The multi-stage flywheel of the variable speed bicycle according to claim 1, wherein the gasket is made of cowhide, sheepskin or pigskin, and further comprises artificial synthetic leather and felt, and any material capable of adsorbing lubricating oil is within the scope of protection of the present invention. within. The multi-stage flywheel of the variable speed bicycle according to claim 1, wherein each of the gears is provided with a mounting hole, and the inner diameters of the mounting holes of the gears are the same. The multi-stage flywheel of the variable speed bicycle according to claim 4, wherein at least one gear spline is disposed inside the mounting hole. The multi-stage flywheel of the variable speed bicycle according to claim 4, wherein each of the gears is provided with at least one corresponding gear screw hole.