TW202122282A - Clutch-shaft-type hub of ratchet wheel being particularly designed for a transmission structure for a hub of a rear wheel and a flying wheel of a racing bicycle - Google Patents

Abstract

This invention provides a clutch-shaft-type hub of a ratchet wheel, which is particularly designed for a transmission structure for a hub of a rear wheel and a flying wheel of a racing bicycle. When the rear wheel is enabled to reversely rotate, the hub of the rear wheel may be automatically separated from the flying wheel to form a non-linkage relationship, so that the riding safety of the bicycle is improved. The structural design is mainly characterized in that an inner clutch ratchet wheel and an outer clutch ratchet wheel are placed in a transmission bearing hole which is recessed in the hub of the rear wheel and are engaged by virtue of a plurality of forward rotating teeth to form a transmission relationship between the flying wheel and the hub, so that pedals are treaded to drive a chain to drive the flying wheel, the hub and the rear wheel may be linked to forwards rotate to achieve a forward riding function; and when the rear wheel reversely rotates due to a terrain or slope, the inner clutch ratchet wheel of the hub also reversely rotates to make the outer clutch ratchet wheel inwards move and retract to be unengaged from a flying wheel transmission gear, so that a linkage relationship between the hub and the flying wheel is released, then, a rider may solve the seizing and falling problems, which may be derived, without reversely treading the pedals, the riding safety is effectively improved, and meanwhile, the operation demand for fancy actions of the rider may be increased.

Description

Ratchet clutch shaft hub

The invention relates to a ratchet clutch shaft hub, which is mainly aimed at a competitive bicycle when facing the terrain or slope and causing the rear wheel to rotate in the reverse direction. The inner clutch ratchet can use the inner clutch ratchet to cause the outer clutch ratchet to move inward and retreat to disengage from the flywheel transmission gear. The meshing state releases the linkage relationship between the hub and the flywheel, so that the rider does not need to follow the pedal, thereby effectively improving their riding safety, and at the same time, it can increase the rider's demand for fancy movements.

According to the general competitive bicycle, in order to pursue the excitement of riding, show the skills of the rider, and the changes in riding styles, the riding site is often planned for various terrain and slope changes, and in addition to forward riding, there are From time to time, there will be riding changes with the rear wheel reversing, in response to various fancy competitions or performances.

From the perspective of the transmission design of general bicycles, the pedals are usually used to move the chain to drive the flywheel installed on the rear axle, and then synchronously drive the coaxially arranged flower hub and the rear wheel to rotate on the rear axle to achieve the riding forward function. , Due to the configuration of the linkage relationship, that is, the pedal drives the flywheel to rotate, the hub and the rear wheel must rotate accordingly. When the rear wheel reverses due to factors such as terrain or slope, the hub is bound to drive The flywheel is reversed. At this time, the rider must step on the pedals in a timely manner. Otherwise, the safety concerns of the mechanism may be stuck and the car crashed. The inventor is the research and development of the solution.

In view of the riding safety problems that may be derived from the configuration of the rear wheel hub and the flywheel transmission relationship of the conventional competitive bicycle, the inventor specializes in research and development and design. Based on his years of experience and technology in related industries, he hopes to develop A clutch transmission structure that does not activate the flywheel when the rear wheel is reversed.

In order to achieve the purpose of preventing the hub from driving the flywheel when the rear wheel of the bicycle is reversed, the structure design of the present invention is mainly to embed an inner clutch ratchet and an outer clutch ratchet in the concave transmission hole of the rear wheel hub. The inner and outer ratchets obtain the linkage relationship through the meshing of a plurality of forward rotation teeth, and then obtain the transmission relationship between the flywheel and the flower through the meshing of the outer clutch ratchet with the built-in transmission gear of the flywheel, so that when the flywheel is driven by the pedal and the chain is driven, it can be The moving hub and the rear wheel rotate in the forward direction to achieve the forward riding function. When the rear wheel's terrain or slope rotates in the reverse direction, the inner clutch ratchet of the hub rotates in the reverse direction to cause the outer clutch ratchet to move inward and retract and disengage. The meshing state with the flywheel drive wheel releases the linkage relationship between the hub and the flywheel, so that riding does not need to step on the pedal, thereby solving the problem of stuck and crashing that may arise, and can improve the operation demand for the rider to perform fancy movements. By.

The ratchet clutch type flower hub of the present invention is designed through its structural composition. When the rear wheel of the bicycle is reversed, the inner and outer clutch ratchets inside the flower hub are matched to disengage from the meshing transmission relationship with the flywheel transmission gear, so as to avoid Transmission influence, so that the rider does not need to make a cooperative foot pedal back-stepping action, it can also avoid the safety concerns of the pedal jam and cause a crash, and increase the operation demand for the rider to perform fancy movements.

(10)‧‧‧Flower hub

(11)‧‧‧Bearing

(12)‧‧‧Axle

(13)‧‧‧Transmission bearing hole

(20)‧‧‧Internal clutch ratchet

(21)‧‧‧Cross Gear

(22)‧‧‧Shaft sleeve

(23)‧‧‧O-ring

(30)‧‧‧External clutch ratchet

(31)‧‧‧Cross Gear

(32)‧‧‧Reverse ratchet

(40)‧‧‧Flywheel

(41)‧‧‧Internal tooth slot

(42)‧‧‧Spring

(43)‧‧‧Cover

(50)‧‧‧Transmission gear

(51) ‧ ‧ Forward ratchet

Figure 1: A schematic diagram of the overall appearance of a preferred embodiment of the present invention.

Figure 2: An exploded schematic view of the hub and flywheel of the preferred embodiment of the present invention.

Figure 3: A schematic diagram of the flywheel structure of the preferred embodiment of the present invention.

Figure 4: is an exploded schematic diagram of the flywheel structure of the preferred embodiment of the present invention.

Figure 5 is an exploded schematic view of the flywheel structure in another view of the preferred embodiment of the present invention.

Figure 6: is a schematic diagram of the structural relationship of the preferred embodiment of the present invention when the hub and the flywheel are separated from the transmission state.

Figure 7: is a schematic diagram of the structural relationship of the preferred embodiment of the present invention.

Figure 8: is a schematic diagram of the structural relationship of the preferred embodiment of the present invention when the flywheel drives the hub to rotate.

Figure 9: is a schematic diagram of the structural relationship between the hub reversal and non-transmission flywheel of the preferred embodiment of the present invention.

Regarding the structural composition, technical means and effect of the present invention, I would like to give an example in conjunction with the diagram to further illustrate the following in detail:

Please refer to Figures 1-9 to illustrate the preferred embodiment of the present invention. As shown in the figure, the structure design of the ratchet clutch shaft hub of the present invention is mainly to fit the bearing inside the hub (10) (11) A shaft (12) is assembled to mount the rear wheel frame on the frame, and a transmission bearing hole (13) is recessed on one end of the hub (10) of the rear wheel. An inner clutch ratchet (20) and an outer clutch ratchet (30) are built into the hole (13). The inner and outer clutch ratchets (20) (30) are matched by a plurality of forward gears (21) ( 31) The meshing obtains a linkage relationship, and a sleeve (22) and an O-ring (23) are plugged in the inner end of the inner clutch ratchet (20), and then through the reverse spine of the outer ring surface of the outer clutch ratchet (30) Tooth (32) and flywheel (40) internal tooth slot (41) built-in transmission gear (50) in the forward direction The ratchet teeth (51) are meshed to obtain a linkage relationship. A spring (42) is sandwiched between the inner end of the transmission gear (50) and the inner tooth hole (41), and is set in a cover (43). The inner end of the flywheel (40) seals the transmission gear (50), thereby forming the ratchet clutch shaft type flower hub of the present invention;

Through the structural composition design disclosed above, the ratchet clutch shaft hub of the present invention utilizes the fit of the inner and outer clutch ratchets (20) (30) and the meshing of the outer clutch ratchet (30) with the transmission gear (50), Obtain the transmission relationship between the hub (10) and the flywheel (40). When the rider steps on the pedal to drive the chain (not shown) to drive the flywheel (40), the inner and outer clutch ratchets (20) ( 30) is in a forward fit, which promotes the outer clutch ratchet (30) and the transmission gear (50) to maintain a meshing relationship, so the flywheel (40) can link the hub (10) and the rear wheel to rotate in the forward direction to achieve the forward riding function, and When the rear wheel rotates in the reverse direction due to terrain or slope, the inner clutch ratchet (20) of the hub (10) reversely reverses to cause the outer clutch ratchet (30) to move inward and retreat from the flywheel (40). ) The meshing state of the transmission gear (50) releases the interlocking relationship between the hub (10) and the flywheel (40), so that the rider does not need to step back on the pedal, so as to avoid the conventional structure that may be derived from not stepping on the pedal. The problem of stuck and crashing can effectively improve the safety of riding, and at the same time, it can also increase the operation demand of riders for fancy movements;

That is, the ratchet clutch hub developed by the present invention for competitive bicycles, through the arrangement of the inner and outer clutch ratchets and transmission gears between the hub and the flywheel, so that the inner and outer clutch ratchets fit in the forward direction. The meshing relationship with the transmission gear is achieved, and the flywheel drives the hub and the rear wheel to rotate in the forward direction. When the rear wheel rotates in the reverse direction due to slope or other factors, the inner clutch ratchet can be used to drive the outer clutch ratchet Retracted and disengaged from the transmission gear The meshing and interlocking relationship of the rear wheel prevents the rear wheel from interfering with the flywheel. In this way, the rider does not need to worry about whether the pedal will jam and cause a crash even if the pedal is not reversed, which can greatly improve the safety of riding. It can effectively solve the safety concerns of the conventional structure, and at the same time, it can also increase the operation needs of the rider to perform fancy movements;

Summarizing the above description, the ratchet clutch shaft hub of the present invention, through its structural composition design, gives it the reversal of the subsequent wheels to promote the inner and outer clutch ratchets of the hub and the flywheel transmission gear to produce a clutch effect, avoiding The hub then reverses the wheel and affects the flywheel and pedals, resulting in safety concerns that the pedals are not stepped back and may cause jams and crashes. This effectively solves the problems and deficiencies of the conventional structure that is not ideal. On the whole, it is true. Excellent industrial usability and practical value, Yan filed a patent application in accordance with the law.

(20)‧‧‧Internal clutch ratchet

(21)‧‧‧Cross Gear

(22)‧‧‧Shaft sleeve

(23)‧‧‧O-ring

(30)‧‧‧External clutch ratchet

(31)‧‧‧Cross Gear

(32)‧‧‧Reverse ratchet

(40)‧‧‧Flywheel

(41)‧‧‧Internal tooth slot

(42)‧‧‧Spring

(43)‧‧‧Cover

(50)‧‧‧Transmission gear

(51) ‧ ‧ Forward ratchet

Claims (2)

A ratchet clutch shaft type flower hub is assembled on the rear wheel of a bicycle. The inside of the flower hub is matched with a bearing to set a shaft rod. One end of the shaft rod is also set with a flywheel driven by a chain, so that the rear wheel frame is assembled on the rear wheel. On the frame, the flower hub can be driven by the flywheel to rotate in the forward direction; its improvement lies in: One end of the hub of the rear wheel is recessed inwardly with a transmission bearing hole, and an inner clutch ratchet and an outer clutch ratchet are built into the transmission bearing hole. The inner and outer clutch ratchets are aligned by a plurality of channels. The meshing of the rotary teeth obtains the linkage relationship, and then the reverse ratchet teeth of the outer ring surface of the outer clutch ratchet mesh with the forward ratchet teeth of the inner ring surface of the transmission gear built in the inner tooth slot of the flywheel to obtain the linkage relationship. A spring is clamped between the end and the inner tooth hole slot, and the transmission gear is sealed by a cover set on the inner end of the flywheel. The ratchet clutch shaft type hub is formed according to this, which can especially be used when the rear wheel is reversed. , By virtue of the inner clutch ratchet of the hub with reverse reverse rotation, the outer clutch ratchet is pushed to move inward and retreat and disengage from the meshing state with the flywheel transmission gear, releasing the interlocking relationship between the hub and the flywheel, so that the rider does not need to follow back pedaling. The board can avoid the problem of jamming and crashing, and effectively improve the rider's riding safety. According to the ratchet clutch shaft type hub described in item 1 of the scope of patent application, the inner end of the inner clutch ratchet set in the hub transmission bearing cavity is additionally plugged with a shaft sleeve and O-ring.

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