TW201639724A - Hub and flywheel assembly structure - Google Patents

Abstract

A hub and flywheel assembly structure comprises a hub body, a flywheel set, a connecting sleeve, and an external flywheel. It mainly facilitates the engagement and installation of the connecting sleeve and the ratchet sleeve of the hub body to effectively achieve the extension of ratchet sleeve, and also provides the installation of an external flywheel, thereby increasing the number of pinions of the flywheel tooth disk and greatly reducing the tooth number of the smallest gear. In this way, when a rider passes by a downhill section, he can switch the gear to mesh with the tooth disk of the external flywheel. Through reducing the diameter of the tooth disk and reducing the number of teeth, pedaling strength can be increased, which enables the rider to effectively control the bike speed through controlling the flywheel rotation, thereby avoiding the risk of missing the step on a downhill section. On the other hand, it allows the user to pedal again for acceleration to effectively enhance the riding speed.

Description

Flower hub and flywheel combination structure

The invention relates to a flower hub structure, in particular to a flower hub and flywheel combination structure applied to a downhill vehicle.

According to the bicycle shifting system, the shifting is adjusted to meet various road conditions; the components mainly include components such as a flywheel, a large gear, a transmission, a chain, a shift lever, a cable, etc., wherein the large gear is provided on the bicycle. The crank portion, which usually has two to three toothed discs, and uses the shift lever to perform the toothed disc switching; the flywheel is disposed at the flower hub of the rear wheel, which usually has 5 to 10 toothed discs, and utilizes The transmission is used as the switching of each of the toothed discs; the shifting principle applied by the structure is mainly input by a large toothed disc with a crankshaft connected by a power source, and different front and rear toothed discs are selected to obtain different speed ratios. .

However, the common flower hub structure on the market, as shown in Figures 7 and 8, the hub body 50 includes a shaft 51, and a ratchet sleeve that is disposed on the shaft 51 to provide the flywheel assembly 60 for positioning and positioning. 52. The ratchet sleeve 52 and the flywheel set 60 are telescopically positioned through the corresponding slot structure, thereby enclosing the flywheel set 60 in the ratchet sleeve 52 and forming a synchronized interlocking state, and the inner wall of the ratchet sleeve 52. The ring is provided with a threaded section 521, and finally a limit nut 53 is locked to the threaded section 521 and simultaneously abuts the flywheel set 60, thereby restraining the flywheel set 60 on the ratchet sleeve 52 to complete the hub body 50. In combination with the flywheel set 60, it is provided that the rider can be switched by the shift lever when riding the rider.

However, it is not difficult to find out the shortcomings of the above-mentioned conventional structure. As follows: the number of the toothed discs of the flywheel set 60 on the market is assembled corresponding to the size of the ratchet sleeve 52, thereby limiting the number of teeth of the smallest toothed disc. When traveling through a downhill section, the number of teeth of most of the smallest toothed discs is only provided at most. And the gentle stepping speed, it is easy to control the speed of the flywheel group 60 by controlling the increase or decrease of the gradient. It not only has the doubt of stepping on the air, but also lacks the state of providing the rider to step on the acceleration. The utility of the structure, on the other hand, if the number of the toothed discs is to be added, the corresponding ratchet sleeve 52 is further developed, thereby increasing the research and manufacturing cost, and is not economical; in view of this, the inventor has been engaged for many years. The manufacturing development and design experience of related products, after detailed design and careful evaluation of the above objectives, will finally have a practical invention.

The technical problem to be solved by the present invention is to provide a flower hub and flywheel combination structure in view of the above-mentioned shortcomings existing in the prior art.

The utility model relates to a flower hub and a flywheel combined structure, comprising: a flower hub body, a flywheel set, a connecting sleeve and an external flywheel, the flower hub body comprises a shaft rod, and a threaded rod is provided on the shaft rod to provide a flywheel group installation and positioning. a ratchet sleeve, the outer wall of the ratchet sleeve is formed with a plurality of axially disposed engagement grooves, and the inner wall of the ratchet sleeve is provided with an internal thread segment, and a connecting sleeve is hollow with a slotted fit to fit over the shaft. And the combination part with the threaded section at one end is locked with the ratchet sleeve, and then the combined part is integrally provided with the wearing part with small diameter, and the outer circumference of the wearing part is provided with external thread to provide a tight nut lock The external flywheel has a plurality of toothed discs arranged in a decreasing manner, and a through-hole portion is formed at the center to form a perforated sleeve and is sleeved on the connecting sleeve, and the outer gear wheel of the outer flywheel is smaller than the outer diameter of the smallest toothed disc of the flywheel group. And a plurality of limiting ribs are arranged on the end face of the maximum toothed disc corresponding to the ratchet sleeve, and the above structure is used to form a flower hub and a flywheel combined structure.

Compared with the efficacy of the prior art: (a), the present invention provides a connecting sleeve and flower The ratchet sleeve of the hub body is connected and installed to effectively extend the ratchet sleeve to provide installation of the external flywheel, and the connecting sleeve can also be installed on most of the flower hub bodies on the market, and the assembly is convenient and fast, and The components are simple, and the overall structure can be convenient and practical.

(2) The cooperation between the hub of the flower hub and the connecting sleeve and the external flywheel is applied Downhill vehicles, through the connection sleeve and the attachment of the external flywheel, increase the number of pinions of the flywheel gear, and also greatly reduce the number of teeth of the smallest gear, so that the rider can pass the downhill section Switching to the toothed disc of the external flywheel, the diameter of the toothed disc is reduced and the number of teeth is reduced to increase the pedaling force, so that the rider can control the speed of the flywheel by controlling the rotation of the flywheel, which not only prevents the rider from stepping on the downhill section. Empty doubts, on the other hand, allow the user to apply force to step on the acceleration, effectively improving the riding speed.

〔this invention〕

10‧‧‧flower hub

11‧‧‧ shaft

12‧‧‧ratchet sleeve

121‧‧‧Inlay slot

122‧‧‧Threaded section

20‧‧‧Flywheel set

201‧‧‧ toothed disc

21‧‧‧First Flywheel

22‧‧‧second flywheel

221‧‧‧ spaced ribs

23‧‧‧ linkage toothed disc

231‧‧‧shims

30‧‧‧Connecting sleeve

31‧‧‧through slot

32‧‧‧Combination Department

33‧‧‧ wearing sets

331‧‧‧ external thread

34‧‧‧Forced nuts

35‧‧‧Tool lock

40‧‧‧External flywheel

41‧‧‧ toothed disc

42‧‧‧through holes

421‧‧‧Bundle Department

422‧‧‧Interface

43‧‧‧Limited ribs

[study]

50‧‧‧flower hub

51‧‧‧ shaft

52‧‧‧ratchet sleeve

521‧‧ Thread segment

53‧‧‧Limited nuts

60‧‧‧Flywheel set

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an exploded view of the invention.

Fig. 3 is an exploded view of the connecting sleeve, the external flywheel and the hub of the flower hub of the present invention.

Figure 4 is a cross-sectional exploded view of the adapter sleeve, the external flywheel and the hub of the present invention.

Fig. 5 is a sectional view showing the combination of the adapter sleeve, the external flywheel and the hub body of the present invention.

In order to enable your review committee to have a better understanding and understanding of the purpose, features and effects of the present invention, please follow the [simplified description of the drawings] as follows: First, please refer to the first and second figures with the third The figure shows a combination of a flower hub and a flywheel. The utility model comprises: a flower hub body 10, a flywheel set 20, a connecting sleeve 30 and an external flywheel 40. The hub body 10 includes a shaft 11 and a shaft 11 is provided to provide the flywheel assembly 20 for installation and positioning. The ratchet sleeve 12 is applied to a downhill vehicle, and the shaft 11 has a diameter of up to 12 mm. The outer wall of the ratchet sleeve 12 forms a plurality of axially disposed engaging grooves 121, and the ratchet sleeve 12 is The wall is provided with an internal thread segment 122, and a flywheel assembly 20 is integrally formed with a plurality of toothed discs 201 arranged in a decreasing manner, and the toothed discs 201 have a predetermined spacing therebetween, and may also include a first flywheel 21 and a combination thereof. The second flywheel 22, the first and second flywheels 21, 22 are sequentially provided with a plurality of toothed discs 201 in a decreasing manner, and the toothed discs 201 have a preset spacing therebetween, and are sequentially arranged to be limited to the ratchet body of the hub body 10. a sleeve 12, and a plurality of spaced ribs 221 are protruded from the end surface of the second flywheel 22 adjacent to the first flywheel 21 (as shown in FIG. 4), and the flywheel set 20 further includes at least one linked toothed disc 23, The outer diameter of the interlocking toothed disc 23 continues to decrease in the flywheel group 20, and the interlocking toothed disc 23 is matched with a pad. The splicing sleeve 30 is hollow and has a slot 31 for fitting over the shaft 11. The combination portion 32 having a threaded portion at one end is locked with the ratchet sleeve 12, and is integrally formed by the combination portion 32. There is a sleeve portion 33 having a small diameter, and the outer circumference of the sleeve portion 33 is provided with an external thread 331 to provide a locking nut 34, and the sleeve portion 33 is adjacent to the assembly portion 32 and is provided with a non-circular tool lock. The solid portion 35, an external flywheel 40 has a plurality of spurs 41 arranged in a decreasing manner, and a continuous through hole 42 is formed at the center, and the ports on both sides of the through hole 42 are formed in a stepped shape to form a set of bundle portions 421 and an inlay. The portion 422 is fitted through the sleeve portion 421 to the sleeve portion 33 of the engaging sleeve 30, and the inner diameter of the engaging portion 422 is slightly larger than the outer diameter of the ratchet sleeve 12, and the outer ring 41 of the external flywheel 40 is smaller than The flywheel assembly 20 has an outer diameter of the smallest toothed disc 201, and a plurality of limiting ribs 43 are provided in the engaging groove 121 corresponding to the ratchet sleeve 12 at the end face of the maximum sprocket 41 adjacent to the port, and the number of teeth of the outer sprocket 40 of the smallest sprocket 41 It is presented in eight or nine teeth.

The composition of the structure and the state of actual use, please refer to the second and third figures As shown in FIG. 4 and FIG. 5, the hub body 10 provides the installation of the flywheel assembly 20 through the ratchet sleeve 12, and uses the engagement slot 121 to achieve the sleeve positioning of the flywheel assembly 20, and the flywheel assembly 20 can be combined. The first flywheel 21 and the second flywheel 22 are disposed on the ratchet sleeve 12 according to the size of the toothed disc 201 to form a positioning, and the end surface of the second flywheel 22 is adjacent to the first flywheel 21 and further provided with a spacing rib 221, The first and second flywheels 21, 22 can be properly spaced through the spacing ribs 221, and when the ratchet sleeve 12 has a clearance to provide the sprocket set, a single interlocking sprocket 23 can be further provided in sequence. On the ratchet sleeve 12, the number of shifting stages of the flywheel assembly 20 is raised. The engaging sleeve 30 is threaded over the shaft 11 by the slot 31 and locked by the combined portion 32 and the inner threaded section 122 of the ratchet sleeve 12. The solid forming is interlocked so that the ratchet sleeve 12 can be further extended through the engaging sleeve 30, especially for the hub body 10 of the downhill vehicle, thereby increasing the space for the reinstallable flywheel to provide the wearing set of the external flywheel 40. It is assumed that the external flywheel 40 is threaded through the sleeve 421 of the through hole 42 through the engaging sleeve 30. The sleeve portion 33 is further disposed adjacent to the minimum spur 201 of the flywheel set 20 or the interlocking sprocket 23 by the engaging portion 422, and the limiting rib 43 of the engaging portion 422 is engaged with the engaging groove 121 of the ratchet sleeve 12 Simultaneously, and at the same time, a predetermined spacing is defined against the outer end wall of the minimum sprocket 201 or the interlocking sprocket 23, and finally the tightening nut 34 is locked into the outer sleeve 331 of the engaging sleeve 30 to limit the positioning, so that the flywheel set 20 and the external flywheel 40 form a total of 12 toothed discs, in summary, to complete the flower hub and flywheel combination structure.

Furthermore, the adapter sleeve 30 can be used together with a flower hub body 10 that is commonly installed on the market. In the above, the combination portion 32 is locked and fixed with the inner thread segment 122 of the ratchet sleeve 12, and then the extension of the ratchet sleeve 12 is achieved through the engagement sleeve 30, and the external flywheel 40 can be additionally installed, and the assembly method is better. The flywheel mounted on the hub body 10 is removed, and the flywheel set 20 and the external flywheel 40 are sequentially installed to accurately reduce the number of the flywheel gears, thereby increasing the number of flywheel shifting segments.

By the structure of the above specific embodiment, the following benefits can be obtained: (1) the creation An adapter sleeve 30 is provided to be coupled to the ratchet sleeve 12 of the hub body 10 to effectively extend the ratchet sleeve 12 for providing the installation of the external flywheel 40, and the adapter sleeve 30 can also be installed on the market. The majority of the hub body 10, and through the replacement of the flywheel set 20 and the external flywheel 40, can achieve the perfect connection state of the number of the toothed disc segments, the assembly is convenient and fast, and the components are simple, and the overall structure can be convenient and practical. .

(2) The cooperation of the hub body 10 with the connecting sleeve 30 and the external flywheel 40 is It is used for downhill vehicles, through the connection of the connecting sleeve 30 and the external flywheel 40, thereby increasing the number of small gears of the flywheel and greatly reducing the number of teeth of the smallest toothed disc, allowing the rider to go through the downhill section. The number of riding segments is switched to the toothed disc 41 of the external flywheel 40, and the circular diameter of the toothed disc 41 is reduced and the number of teeth is reduced to increase the pedaling force, so that the rider can control the speed of the flywheel effectively by controlling the rotation of the flywheel, thereby avoiding riding The occupant has doubts about stepping on the downhill section, and on the other hand, the user can apply the force to step on the acceleration to effectively improve the riding speed.

In summary, the present invention has indeed achieved a breakthrough structural design, and has improved invention content, and at the same time, can achieve industrial utilization and progress, and the present invention is not found in any publication, but also novel, when In accordance with the provisions of the relevant laws and regulations of the Patent Law, the application for invention patents is filed according to law, and the examination authority of the bureau is required to grant legal patent rights.

The above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto; that is, the equivalent variations and modifications made by the scope of the present invention should still belong to the present invention. Within the scope of the patent.

10‧‧‧flower hub

11‧‧‧ shaft

12‧‧‧ratchet sleeve

121‧‧‧Inlay slot

122‧‧‧Threaded section

20‧‧‧Flywheel set

201‧‧‧ toothed disc

21‧‧‧First Flywheel

22‧‧‧second flywheel

23‧‧‧ linkage toothed disc

231‧‧‧shims

30‧‧‧Connecting sleeve

31‧‧‧through slot

32‧‧‧Combination Department

33‧‧‧ wearing sets

331‧‧‧ external thread

34‧‧‧Forced nuts

35‧‧‧Tool lock

40‧‧‧External flywheel

41‧‧‧ toothed disc

42‧‧‧through holes

Claims (9)

A flower hub and flywheel combination structure, comprising: a hub body comprising a shaft, and a ratchet sleeve disposed on the shaft to provide a flywheel assembly mounting position, the outer wall of the ratchet sleeve forming a plurality of axially embedded The groove is fixed, and the inner wall of the ratchet sleeve is provided with an internal threaded section; a connecting sleeve, wherein the hollow has a groove to fit on the shaft, and the combination part with the threaded section at one end is locked with the ratchet sleeve And the assembly part is integrally provided with a sleeve portion having a small diameter, and the outer circumference of the sleeve portion is provided with an external thread to provide a tightening nut lock; and an external flywheel having a plurality of toothed discs arranged in a decreasing manner And forming a continuous perforation at the center to fit through the sleeve of the connecting sleeve, and the outer sprocket of the external flywheel is smaller than the outer diameter of the smallest sprocket of the flywheel, and the end of the largest sprocket corresponds to the insertion of the ratchet sleeve The joint groove is provided with a plurality of limiting ribs. The flower hub and flywheel combination structure according to claim 1, wherein the flywheel assembly is integrally formed with a plurality of toothed discs arranged in a decreasing manner, and each of the toothed discs has a predetermined spacing. The flower hub and flywheel combination structure according to claim 1, wherein the flywheel assembly comprises a first flywheel and a second flywheel in a combined manner, and the first and second flywheels are sequentially arranged in a decreasing manner. There are a plurality of toothed discs, and each of the toothed discs has a predetermined spacing, and the ratchet sleeves of the hub body are arranged in sequence, and a plurality of spaced ribs are convexly disposed on the end surface of the second flywheel adjacent to the first flywheel. The flower hub and flywheel combination structure according to claim 1, 2 or 3, wherein the flywheel set further comprises at least one linked gear plate, and the outer diameter of the linked gear plate is a continuous flywheel set Decrease in sequence, and the interlocking sprocket is matched with a gasket. The flower hub and flywheel combination structure according to claim 1, wherein the sleeve portion of the engaging sleeve is provided with a non-circular tool lock portion adjacent to the joint portion. The flower hub and flywheel combination structure according to the first aspect of the patent application, wherein the number of teeth of the outer gear of the outer flywheel is represented by eight teeth. The flower hub and flywheel combination structure according to the first aspect of the patent application, wherein the number of teeth of the outer largest wheel of the flywheel is represented by nine teeth. According to the flower hub and flywheel combination structure described in claim 1, wherein the ports on both sides of the through hole of the external flywheel are formed in a stepped manner to form a bundle portion and an engaging portion, and are worn through the sheath portion. The sleeve is sleeved on the sleeve of the connecting sleeve, and the inner diameter of the engaging portion is slightly larger than the outer diameter of the ratchet sleeve, and the limiting port is provided with a plurality of limiting ribs. According to the flower hub and flywheel combination structure described in claim 1, wherein the total number of the toothed discs formed between the flywheel group and the external flywheel is up to 12 pieces.