CN216546545U - Gear disc assembly, gear disc mechanism and sharing bicycle - Google Patents

Abstract

The embodiment of the disclosure provides a fluted disc subassembly, fluted disc mechanism and sharing bicycle, relates to bicycle technical field for solve the lower problem of assembly efficiency of right crank and fluted disc. The gear disc assembly is applied to a gear disc mechanism of a shared bicycle and comprises a gear disc, a first crank and an adapter, wherein the adapter is connected to the end face of the connecting end of the first crank and located between the first crank and the gear disc. The periphery side edge of adaptor has a plurality of switching portions, has a plurality of connecting portion on the pore wall of the mounting hole of fluted disc, and the adaptor is located mounting hole department to can dismantle with connecting portion through switching portion and be connected. According to the fluted disc assembly, the production cycle of the sharing bicycle can be shortened, the production cost of the sharing bicycle is reduced, and the assembly efficiency of the fluted disc and the first crank can be improved.

Description

Gear disc assembly, gear disc mechanism and sharing bicycle

Technical Field

The embodiment of the disclosure relates to the technical field of bicycles, in particular to a fluted disc assembly, a fluted disc mechanism and a shared bicycle.

Background

In recent years, consumers often select a shared bicycle as a transportation tool when traveling in short distance.

Because the shared bicycle is exposed in the external environment for a long time while providing a lot of convenience for people, the shared bicycle is easy to damage because of no supervision, and the shared bicycle has shorter service life compared with a common bicycle. At present, in order to protect the safety of people, relevant laws and regulations have corresponding regulations on the service life of a shared bicycle, and the shared bicycle with the expired service life is scrapped and cannot be continuously put on the market for use by vast users. In order to avoid the scrapping of some parts in the shared bicycle, such as the right crank, on the bicycle, in some designs, the right crank is directly connected with the fluted disc through a plurality of screws, so that the right crank can be reused after the use period of the shared bicycle expires.

However, in the process of connecting the fluted disc with the right crank through the screw, the fluted disc and the right crank can rotate relatively, which affects the assembly efficiency of the fluted disc and the right crank.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a gear disc assembly, a gear disc mechanism and a shared bicycle, which are used for solving the problem that the assembly efficiency of the existing right crank and the gear disc is low.

In a first aspect, an embodiment of the present disclosure provides a gear disc assembly applied to a gear disc mechanism of a shared bicycle, where the gear disc assembly includes a gear disc, a first crank and an adaptor, the first crank has a connection end, the adaptor is connected to an end surface of the connection end and located between the first crank and the gear disc, a plurality of adaptor portions are provided at peripheral edges of the adaptor, a mounting hole is provided in the gear disc, a plurality of connection portions are provided on a hole wall of the mounting hole, and the adaptor is located at the mounting hole and detachably connected to the connection portions through the adaptor portions; the adapter is provided with a first limiting part, the connecting part is provided with a second limiting part, and one of the first limiting part and the second limiting part is arranged in the other one in a penetrating manner.

In an alternative embodiment, an end of the connecting portion extends toward one side of the center of the mounting hole, so that the connecting portion is stacked on the adapter portion.

In an optional implementation manner, a plurality of first limiting portions are arranged on the adapter, the plurality of first limiting portions are uniformly distributed on the adapter, and the second limiting portions are opposite to the first limiting portions in number and correspond to the first limiting portions in a one-to-one manner.

In an optional implementation manner, the first limiting portion is a concave structure on the adapter portion, and the second limiting portion is a convex structure on the connecting portion protruding toward one side of the adapter portion.

In an alternative embodiment, an end of the second position-limiting portion is inserted into the first position-limiting portion and exposed on a surface of the adapter portion.

In an optional embodiment, the first limiting portion is a mounting hole on the adapter portion, which is matched with the second limiting portion in structure.

In an optional implementation manner, the pinion assembly further includes a fastener, the adapter portion is further provided with a first assembling hole, the connecting portion is provided with a second assembling hole, and the fastener is inserted into the first assembling hole and the second assembling hole to connect the adapter portion and the connecting portion.

In an alternative embodiment, the second limiting portion and the second fitting hole are located at the same or different connecting portion.

In an optional embodiment, when the second assembling holes and the second limiting portions are distributed in different connecting portions, the second assembling holes and the second limiting portions are spaced apart from each other on the fluted disc.

In an optional implementation manner, the connecting portions are uniformly distributed on the hole wall of the mounting hole, and the number of the adapter portions is equal to that of the connecting portions and corresponds to that of the connecting portions one to one.

In a second aspect, embodiments of the present disclosure provide a chainring mechanism comprising a second crank and a chainring assembly as described above, the second crank being connected to a connecting end of a first crank in the chainring assembly.

In a third aspect, an embodiment of the present disclosure provides a shared bicycle, where the shared bicycle includes a frame and the above-mentioned toothed disc mechanism, where the toothed disc mechanism is disposed on the frame, a first crank of the toothed disc mechanism is a right crank of the shared bicycle, and a second crank of the toothed disc mechanism is a left crank of the shared bicycle.

The embodiment of the disclosure provides a set of fluted disc subassembly, fluted disc mechanism and sharing bicycle, at first through the setting of adaptor in the set of fluted disc subassembly, locate the adaptor between first crank and fluted disc, and be connected with first articulate connection terminal surface, because set up a plurality of switching portions on the adaptor, be equipped with a plurality of connecting portions on the pore wall of the mounting hole of fluted disc, when the adaptor is located mounting hole department, can be connected with connecting portion through the switching portion, thereby realize being connected of first crank and fluted disc, realize first articulate multiplex function, in order to reach the production cycle that shortens set of fluted disc subassembly and sharing bicycle, when reducing the effect of the manufacturing cost of set of fluted disc subassembly and sharing bicycle, can simplify the structure of fluted disc, be favorable to further reducing the manufacturing cost of set of fluted disc subassembly and sharing bicycle. On this basis, through the setting of first spacing portion and the spacing portion of second, can also carry out preassembly to fluted disc and adaptor, when can avoiding fluted disc and adaptor further to be connected, the relative adaptor of fluted disc rotates to improve fluted disc and first articulate assembly efficiency, help further reducing the manufacturing cost of sharing bicycle.

Various possible embodiments of the present disclosure and technical advantages thereof will be described in detail below.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of a shared bicycle at a first viewing angle according to an embodiment of the present disclosure;

fig. 2 is a schematic structural view of a shared bicycle at a second viewing angle according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a gear disc assembly provided in an embodiment of the present disclosure at a first viewing angle;

FIG. 4 is a schematic structural diagram of a gear disc assembly provided in an embodiment of the present disclosure at a second viewing angle;

FIG. 5 is an exploded view of a gear disc assembly provided by an embodiment of the present disclosure;

FIG. 6 is a structural diagram of a fluted disc according to an embodiment of the present disclosure;

fig. 7 is a schematic structural view of an adaptor and a first crank provided in the embodiment of the present disclosure.

Description of reference numerals:

100-sharing a bicycle; 10-a frame; 20-a fluted disc assembly; 21-a first crank; 211-a connection end;

22-an adaptor; 221-a switching part; 2211-first assembly hole; 2212-first stop;

23-a fluted disc; 231-mounting holes; 232-a connecting part; 2321-a second assembly hole; 2322-a second limit part; 233-tooth tip;

24-a fastener; 30-the medial axis; 40-a second crank; 50-treading; 60-a chain; 70-a flywheel; 80-a front wheel assembly; 90-rear wheel assembly.

With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Examples

Embodiments of the present disclosure provide a shared bicycle that may include, but is not limited to, a human-powered shared bicycle and a power-shared bicycle (i.e., a shared electric bicycle). For example, sharing a bicycle includes, but is not limited to, sharing a bicycle. Wherein, the manpower sharing bicycle can also be called as the manpower sharing bicycle sharing electric bicycle.

The structure of the chain wheel assembly, the chain wheel mechanism and the shared bicycle in the embodiment of the present disclosure will be further described below by taking a manpower shared bicycle as an example.

Fig. 1 is a schematic structural view of a shared bicycle provided in an embodiment of the present disclosure at a first viewing angle, and fig. 2 is a schematic structural view of the shared bicycle provided in the embodiment of the present disclosure at a second viewing angle.

Fig. 1 and fig. 2 are schematic structural diagrams respectively illustrating the entire shared bicycle from different viewing angles, where fig. 1 may be regarded as a schematic structural diagram of a right side surface of the shared bicycle, and fig. 2 may be regarded as a schematic structural diagram of a left side surface of the shared bicycle.

Referring to fig. 1 and 2, a shared bicycle 100, such as a human-powered shared bicycle, may include a frame 10 and a chainring mechanism, which may be disposed on frame 10. The fluted disc mechanism may include a fluted disc assembly 20, and the fluted disc assembly 20 includes a first crank 21. The chainring mechanism may also include a second crank 40. In the embodiment of the present disclosure, the first crank 21 may also be referred to as a right crank of the shared bicycle 100, and the second crank 40 may also be referred to as a left crank of the shared bicycle 100. The second crank 40 may be connected with the first crank 21. The second crank 40 is usually connected to the connecting end 211 of the first crank 21 through the middle shaft 30, wherein the frame 10 may be provided with a five-way at a position opposite to the fluted disc mechanism, the middle shaft 30 may be inserted into the five-way, and two ends of the middle shaft 30 are respectively connected to the first crank 21 and the second crank 40, and together with the second crank 40 and the fluted disc assembly 20, form the fluted disc mechanism.

As can be seen in fig. 1 and 2, the bicycle 100, such as a manpower-sharing bicycle, may further include a front wheel assembly 80, a rear wheel assembly 90, two pedals 50, a flywheel 70, and a chain 60, wherein the front wheel assembly 80 and the rear wheel assembly 90 are respectively mounted to the front end and the rear end of the frame 10, and the chainring mechanism may be provided on the frame 10 between the front wheel assembly 80 and the rear wheel assembly 90. The flywheel 70 may be provided on the rear wheel assembly 90, and the chain 60 may be wound across the toothed disc 23 of the flywheel 70 and the toothed disc assembly 20 as shown in fig. 2 to connect the flywheel 70 and the flywheel 70. Two footrests 50 may be attached to the ends of the first and second cranks 21, 40, respectively. The pedals 50, chain 60 and chainring mechanism may constitute a drive means for the shared bicycle 100. When an external force, such as a pedaling force, acts on the pedals 50 to rotate the pedals 50, the toothed disc 23 can be driven by the first crank 21 and the second crank 40 to rotate relative to the frame 10, and the flywheel 70 can be driven by the chain 60 to rotate relative to the frame 10, so as to drive the shared bicycle 100 to run.

Since the shared bicycle 100 is exposed to the external environment for a long time and is easily damaged due to unattended operation, the shared bicycle 100 has a shorter service life compared with a common bicycle. At present, in order to protect the safety of a large number of users and reduce the possibility of danger when the users use the shared bicycle 100 as much as possible, strict regulations are provided for the service life of the shared bicycle 100 in relevant laws and regulations, wherein the service life of the shared bicycle 100 is specified to be three years. The shared bicycle 100 with the expiration of three years is discarded, so that the shared bicycle 100 with the expiration of three years is prevented from being put on the market, and the possibility of danger when the user uses the shared bicycle 100 is reduced.

However, the strength and the service life of many parts on the sharing bicycle 100 are much higher than the regulations of the sharing bicycle 100 in the three-year usage scenario, and many parts on the sharing bicycle 100 will be scrapped on the vehicle after the sharing bicycle 100 is used up in the market.

With the rising of the unit price of the metal raw materials for manufacturing the shared bicycle 100 and the positive response to the national requirements of energy-saving, emission-reducing and environmental-protection policies, the reuse function of some parts of the shared bicycle 100 is realized by improving the strength and the service life of the parts of the key parts of the shared bicycle 100 or by simply modifying part of the parts of the shared bicycle 100 at low cost, and the development trend of the future research and development and design of the shared bicycle 100 will be realized.

The chainring assembly 20 is an important component of the shared bicycle. Although the tooth tip 233 of the toothed plate 23 is the portion of the shared bicycle that wears the most rapidly and is the most vulnerable during daily cycling, the strength of the first and second cranks 21 and 40 can endure the service life (i.e., the life cycle) of at least two shared bicycles 100, and the manufacturing cost of the first and second cranks 21 and 40 is high. This results in a relatively high cost of manufacture for the fluted disc assembly 20, but a low scrap value.

The low scrap value of the gear disc assembly 20 can be understood as that the gear disc assembly 20 has a low economic value which can be utilized after the gear disc assembly 20 is scrapped along with a vehicle.

In addition, with the diversification of models of the shared bicycle 100, the specifications (such as the number of teeth) of different fluted discs 23 result in the increase of Stock Keeping Units (SKUs) of the fluted disc assembly 20. To facilitate later maintenance of the single shared cart 100, individual products of the disc assemblies 20 having differently sized toothed discs 23 are typically purchased and stored, which may undesirably increase the cost of after-sales maintenance of the disc assemblies 20, which may include, but is not limited to, purchasing transportation costs and inventory areas, thereby increasing the cost of later operation and maintenance of the single shared cart 100.

In order to avoid the scrapping of the first crank, i.e. the right crank, in the shared bicycle, in some existing designs, the right crank is directly threaded through the right crank and the fluted disc of the shared bicycle by a plurality of screws (e.g. 5 or 6 screws, etc.), so that the connection between the right crank and the fluted disc is realized, and after the use period of the shared bicycle expires, the first crank can be reused, so that the function of the first crank is maximally utilized.

In view of this, the embodiment of the present disclosure further provides a fluted disc assembly, which may be applied to a fluted disc mechanism of a shared bicycle, and the fluted disc assembly is firstly transformed through the arrangement of the adaptor, so that on the basis of connecting the first crank and the fluted disc, the multiplexing function of the first crank can be realized, and the structure of the fluted disc can be simplified while the effects of shortening the production cycle of the fluted disc assembly and the shared bicycle and reducing the production cost of the fluted disc assembly and the shared bicycle are achieved. On this basis, through the setting of first spacing portion and the spacing portion of second on the fluted disc subassembly, can also carry out preassembly to fluted disc and adaptor to improve fluted disc and first articulate assembly efficiency, the reduction that helps going on shares the manufacturing cost of bicycle.

Fig. 3 and 4 respectively illustrate a structural schematic diagram of a gear disc assembly at different viewing angles.

Referring to fig. 3 and 4, the gear disc assembly 20 may include a gear disc 23, a first crank 21, and an adaptor 22, the first crank 21 having a connecting end 211. Wherein the connecting end 211 can be understood as the end of the first crank 21 opposite to the foothold 50. The adapter 22 may be attached to the end face of the connecting end 211 between the first crank 21 and the toothed disc 23, which facilitates the connection of the adapter 22 to the first crank 21 and the toothed disc 23.

As can be seen from fig. 3 and 4, the peripheral edge of the adapter piece 22 has a plurality of adapter portions 221, and the adapter piece 22 may also be referred to as an adapter plate or adapter frame. The toothed plate 23 has a mounting hole 231 therein. Wherein, the mounting hole 231 may be a through hole. The middle shaft 30 may be disposed through the connecting end 211 and penetrate through the mounting holes 231 of the adaptor 22 and the fluted disc 23. The wall of the mounting hole 231 has a plurality of connecting portions 232. The toothed disk 23 can be understood as a toothed disk, and toothed disks 23 of different sizes can have different numbers of tooth tips 233. The tooth tip 233 can also be referred to as a tooth of the toothed disk 23. The adaptor 22 may be located at the mounting hole 231 and detachably connected to the connecting portion 232 through the adaptor portion 221, so that the detachable connection of the first crank 21 and the fluted disc 23 is realized through the adaptor 22, and the flexible replacement of the fluted disc 23 is realized according to the design and specification of the fluted disc assembly 20.

According to the embodiment of the disclosure, the adapter 22 is arranged, the traditional gear disc assembly is modified, the detachable connection of the first crank 21 and the gear disc 23 is realized, the integrated connection mode of the first crank 21 and the gear disc 23 is modified into the detachable connection mode, so that after the use period of the shared bicycle 100 expires, the first crank 21 can be detached from the gear disc 23, the first crank 21 and the gear disc 23 are prevented from being scrapped together along with the bicycle, the first crank 21 is recycled, the utilization rate of the first crank 21 is increased, the multiplexing function of the first crank 21 is realized, the production period of the gear disc assembly 20 and the shared bicycle 100 is shortened, and the production cost of the gear disc assembly 20 and the shared bicycle 100 is effectively reduced.

On this basis, first crank 21 is connected with dismantling of fluted disc 23 through adaptor 22, can also make in the fluted disc subassembly 20 first crank 21 and the general rate of fluted disc 23 higher, on ensuring that fluted disc subassembly 20 can satisfy different specifications fluted disc 23 and the shared bicycle 100 of motorcycle type, only need purchase the fluted disc 23 of different specifications such as the number of teeth can reach the purpose of repairing fluted disc subassembly 20, need not to purchase whole group fluted disc subassembly 20, not only can greatly reduce purchase cost of transportation and the stock area of fluted disc subassembly 20, thereby reduce the after-sale cost of maintenance of fluted disc subassembly 20, and when fluted disc subassembly 20 was maintained, only need change fluted disc 23 can, realize the maintenance to the fluted disc subassembly of shared bicycle 100, help realizing the repair general function of sharing bicycle 100 complete series motorcycle type, in order to reach the purpose of cost reduction increase.

In addition, by the arrangement of the adaptor 22, while the reliable connection between the toothed disc 23 and the first crank 21 is ensured, the structure of the toothed disc 23 can be simplified, which contributes to further reducing the manufacturing cost of the toothed disc assembly 20 and the shared bicycle.

Fig. 5 is an exploded view of a gear disc assembly provided in an embodiment of the present disclosure.

As shown in fig. 5, in some embodiments, the adaptor 22 and the first crank 21 may be a unitary structure. Alternatively, in other embodiments, the adaptor 22 and the first crank 21 may be detachably connected (i.e., separated). In the present embodiment, the gear disc assembly 20 adopts an adapter 22 and a first crank 21 which are of an integrated structure. The adaptor 22 and the first crank 21 may be made of the same or different metal materials, and the adaptor 22 may be integrally connected to the end face of the connecting end 211 of the first crank 21 by stamping or other methods. In the present embodiment, the connection mode between the adaptor 22 and the first crank 21 is not further limited.

Referring to fig. 5, in some embodiments, the connecting portions 232 may be uniformly distributed on the hole wall of the mounting hole 231, and the number of the adapter portions 221 may be equal to and correspond to the number of the connecting portions 232. Illustratively, the number of the connecting portions 232 on the fluted disc 23 may include, but is not limited to, six, seven, eight, ten, etc. In this embodiment, the number of the connecting portions 232 is six. Therefore, on the basis of ensuring the stable connection between the adaptor 22 and the fluted disc 23, the structure of the fluted disc 23 and the adaptor 22 can be simplified, the quick connection between the fluted disc 23 and the first crank 21 can be realized conveniently, and the structure of the fluted disc assembly 20 can be more symmetrical and beautiful.

Referring to fig. 5, an end of the connection portion 232 extends on a wall of the mounting hole 231 toward a side of a center of the mounting hole 231 such that the connection portion 232 is overlapped on the adaptor portion 221. Therefore, the adaptor 22 can be conveniently connected with the connecting part 232 of the fluted disc 23 through the adaptor part 221, the first crank 21 is detachably connected with the fluted disc 23, the first crank 21 and the fluted disc 23 in the fluted disc assembly 20 have high general utilization rate, the utilization rate of the first crank 21 is enhanced, the production period of the fluted disc assembly 20 and the shared bicycle 100 is shortened, and the production cost of the fluted disc assembly 20 and the shared bicycle 100 is effectively reduced.

In order to facilitate the connection between the connection portion 232 and the adapter portion 221, referring to fig. 5, the disc assembly 20 may further include a fastener 24, the adapter portion 221 is further provided with a first assembling hole 2211, the connection portion 232 is provided with a second assembling hole 2321, and the fastener 24 may be inserted into the first assembling hole 2211 and the second assembling hole 2321 to connect the adapter portion 221 and the connection portion 232. In this way, the connection between the connecting portion 232 and the adapter portion 221 can be achieved by the fastener 24, so that the first crank 21 is connected to the toothed disc 23.

The fasteners 24 may include, but are not limited to, screws, bolts, or other fastening structures. For example, the first assembly hole 2211 may include, but is not limited to, a through hole and a threaded hole, and the second assembly hole 2321 may be a blind hole or a through hole with threads, so that the fastener 24 passes through the first assembly hole 2211 and then passes through the second assembly hole 2321 to be threadedly connected with the connecting portion 232, thereby connecting the adaptor portion 221 and the connecting portion 232 (as shown in fig. 3 and 4). Alternatively, the fastener 24 is also inserted through the second mounting hole 2321, and then inserted into the first mounting hole 2211 to be screwed with the adaptor 221. In this embodiment, the fastening member 24 is inserted into the second assembly hole 2321 after passing through the first assembly hole 2211, and is screwed with the connecting portion 232. This can facilitate the mounting and dismounting of the second crank 40. In the present embodiment, the structures of the first and second fitting holes 2211 and 2321 are not further limited.

In order to facilitate the penetration of the fastening member 24, the first assembling hole 2211 may be disposed opposite to the second assembling hole 2321, and the first assembling hole 2211 and the second assembling hole 2321 are located on the same axis, so that the fastening member 24 can be conveniently penetrated through the first assembling hole 2211 and the second assembling hole 2321, and the connection between the first crank 21 and the toothed plate 23 is realized.

However, in the assembly fastener 24, under the torque of the installation tool, the toothed disc 23 rotates relative to the adaptor 22, and the unconnected first and second assembly holes 2211 and 2321 need to be realigned, which is inconvenient for quick connection between the adaptor 22 and the toothed disc 23.

Therefore, referring to fig. 5, in the embodiment of the disclosure, the first position-limiting portion 2212 is disposed on the adapter 221, the second position-limiting portion 2322 is disposed on the connecting portion 232, and one of the first position-limiting portion 2212 and the second position-limiting portion 2322 is inserted into the other. Like this through the interact of first spacing portion 2212 and second spacing portion 2322, can carry out pre-assembly to fluted disc 23 to when effectually preventing even avoid fluted disc 23 and adaptor 22 to pass through fastener 24 further to be connected, fluted disc 23 rotates for adaptor 22, thereby improves fluted disc and first articulate assembly efficiency, helps realizing the high-speed joint of adaptor 22 and fluted disc 23.

The adapter 221 is provided with a plurality of first position-limiting portions 2212, the plurality of first position-limiting portions 2212 are uniformly distributed on the adapter 22, and the second position-limiting portions 2322 are corresponding to the first position-limiting portions 2212 in number and in one-to-one correspondence. This makes it possible to stabilize the pre-fixing of the toothed disk 23 on the adapter piece 22.

Fig. 6 is a schematic structural view of a fluted disc according to an embodiment of the present disclosure, and fig. 7 is a schematic structural view of an adaptor and a first crank according to an embodiment of the present disclosure.

The second limiting portion 2322 and the second assembling hole 2321 may be located at the same or different connecting portion 232. That is, the second limiting portion 2322 and the second assembling hole 2321 may be located on the same connecting portion 232, or may be located on different connecting portions 232 as shown in fig. 6. Thus, the structure of the gear disc assembly 20 can be diversified while the detachable connection between the connecting part 232 and the adapter part 221 is realized. In this embodiment, referring to fig. 6, by adopting the structure that the second limiting portion 2322 and the second assembling hole 2321 are located on different toothed discs 23 of the connecting portion 232, and correspondingly, the first limiting portion 2212 and the first assembling hole 2211 are located on different adaptor portions 221 (as shown in fig. 7), on the basis that the sizes of the connecting portion 232 and the adaptor portions 221 are not changed, the connecting portion 232 and the adaptor portions 221 can be detachably connected, and at the same time, the connection between the first limiting portion 2212 and the second limiting portion 2322 can be facilitated, so that the toothed disc 23 and the adaptor 22 can be preassembled through the mutual matching of the first limiting portion 2212 and the second limiting portion 2322, and thus the quick connection between the adaptor 22 and the toothed disc 23 is achieved.

Referring to fig. 6, when the second assembling holes 2321 and the second limiting portions 2322 are distributed on different connecting portions 232, the second assembling holes 2321 and the second limiting portions 2322 may be spaced apart from each other on the toothed plate 23. The connecting portion 232 having the second assembling hole 2321 can be understood as a connecting structure on the toothed plate 23, and the connecting portion 232 having the second limiting portion 2322 can be understood as a limiting structure on the toothed plate 23. Therefore, the second assembling holes 2321 and the second limiting portions 2322 can be uniformly distributed at different positions of the fluted disc 23, and the stability and reliability of the connection between the fluted disc 23 and the adaptor 22 can be ensured while the fluted disc 23 is detachably connected with the adaptor 22 through the fastening piece 24 and the second limiting portions 2322.

It should be noted that the number of the connecting structures and the number of the limiting structures on the fluted disc 23 may be equal or different. For example, when the number of the connecting structures on the fluted disc 23 is six, three connecting structures and three limiting structures may be arranged on the fluted disc 23, and the connecting structures and the limiting structures are uniformly distributed on the hole wall of the assembling hole of the fluted disc 23. Compared with the conventional gear disc assembly, the assembly efficiency of the first crank 21 and the gear disc 23 in the gear disc assembly 20 can be further improved.

In practical applications, the number of the connecting structures and the number of the limiting structures can be adjusted according to the number of the connecting portions 232 on the toothed disc 23, and in this embodiment, the number of the connecting structures and the limiting structures on the toothed disc 23 is not further limited.

In some embodiments, referring to fig. 5 to 7, the first position-limiting portion 2212 may be a concave structure on the adapter portion 221, and the second position-limiting portion 2322 may be a convex structure on the connecting portion 232 that protrudes toward one side of the adapter portion 221. Alternatively, the first position-limiting portion 2212 may be a protruding structure on the adapter portion 221, and the second position-limiting portion 2322 may be a recessed structure protruding toward one side of the adapter portion 221 on the connecting portion 232. Or, the first position-limiting portion 2212 and the second position-limiting portion 2322 are both of a convex structure, and a groove for the other to pass through is formed in one of the two. This allows a greater variety of configurations of the toothed disk assembly 20 while simultaneously achieving a pre-fixing of the toothed disk 23 to the adapter piece 22. The present embodiment does not further limit the structures of the first position-limiting portion 2212 and the second position-limiting portion 2322.

The structure of the gear disc assembly 20 according to the embodiment of the present disclosure is further defined by taking the first position-limiting portion 2212 as a concave structure and the second position-limiting portion 2322 as a convex structure.

The end of the second position-limiting portion 2322 may penetrate through the first position-limiting portion 2212 and be exposed on the surface of the adapter portion 221 (as shown in fig. 4). Therefore, while the toothed disc 23 and the adaptor 22 are pre-fixed, it is also convenient to visually determine whether the assembly of the second limiting portion 2322 on the adaptor 221 is in place, so as to ensure the limiting effect of the first limiting portion 2212 and the second limiting portion 2322, and thus ensure the accuracy of pre-fixing the toothed disc 23 and the adaptor 22, so that the first assembly hole 2211 and the second assembly hole 2321 can be aligned, and the connection of the fastener 24 is facilitated.

In order to facilitate the end of the second position-limiting portion 2322 to be exposed on the surface of the adapting portion 221, the first position-limiting portion 2212 may be a mounting hole 231 on the adapting portion 221, which is structurally matched with the second position-limiting portion 2322. The end of the second position-limiting portion 2322 may be flush with the surface of the adapter 221, or extend out of the first position-limiting portion 2212. In this embodiment, whether the end of the second position-limiting portion 2322 protrudes beyond the first position-limiting portion 2212 is not further limited.

According to the embodiment of the disclosure, by arranging the transfer piece 22, the first limiting part and the second limiting part in the gear disc assembly 20, on the basis of connecting the first crank 21 and the gear disc 23, not only can the multiplexing function of the first crank 21 be realized, the effects of shortening the production cycle of the gear disc assembly 20 and the shared bicycle 100 and reducing the production cost of the gear disc assembly 20 and the shared bicycle 100 be achieved, but also the assembly efficiency of the gear disc 23 and the first crank 21 is improved.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. The embodiments of the disclosure are intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (12)

1. A gear disc assembly is applied to a gear disc mechanism of a shared bicycle and is characterized in that the gear disc assembly comprises a gear disc, a first crank and an adapter, the first crank is provided with a connecting end, the adapter is connected to the end face of the connecting end and located between the first crank and the gear disc, a plurality of adapter portions are arranged on the peripheral side edge of the adapter, a mounting hole is formed in the gear disc, a plurality of connecting portions are arranged on the hole wall of the mounting hole, and the adapter is located at the mounting hole and detachably connected with the connecting portions through the adapter portions; the adapter is provided with a first limiting part, the connecting part is provided with a second limiting part, and one of the first limiting part and the second limiting part is arranged in the other one in a penetrating manner.

2. The disc assembly of claim 1 wherein an end of the connecting portion extends toward one side of the center of the mounting hole such that the connecting portion overlies the adaptor portion.

3. The gear disc assembly according to claim 1, wherein a plurality of first limiting portions are arranged on the adapter, the plurality of first limiting portions are uniformly distributed on the adapter, and the second limiting portions are opposite to the first limiting portions in number and correspond to the first limiting portions in a one-to-one manner.

4. The gear disc assembly according to claim 1, wherein the first limiting portion is a recessed structure on the adapting portion, and the second limiting portion is a raised structure on the connecting portion that is raised toward one side of the adapting portion.

5. The fluted disc assembly according to claim 4, wherein the end of the second limiting part is arranged in the first limiting part in a penetrating way and exposed on the surface of the adapter part.

6. The crankset assembly of claim 5, wherein the first position-limiting portion is a mounting hole in the adapter portion that is configured to mate with the second position-limiting portion.

7. The gear disc assembly according to claim 1, further comprising a fastener, wherein the adapter portion is further provided with a first assembling hole, the connecting portion is provided with a second assembling hole, and the fastener is inserted into the first assembling hole and the second assembling hole to connect the adapter portion and the connecting portion.

8. The crankset assembly as set forth in claim 7, wherein said second retaining portion and said second fitting hole are located at the same or different of said connecting portion.

9. The crankset assembly of claim 8, wherein when the second mounting holes and the second position-limiting portions are distributed on different connecting portions, the second mounting holes and the second position-limiting portions are spaced apart from each other on the crankset.

10. The chain wheel assembly according to any one of claims 1-9, wherein a plurality of said connecting portions are evenly distributed on the wall of said mounting hole, and the number of said adapter portions is equal to and corresponds to the number of said connecting portions.

11. A chainring mechanism comprising a second crank and a chainring assembly according to any of claims 1 to 10, the second crank being connected to the connecting end of the first crank in the chainring assembly.

12. A shared bicycle comprising a frame and a chainring mechanism as set forth in claim 11 disposed on the frame, a first crank of the chainring mechanism being a right crank of the shared bicycle and a second crank of the chainring mechanism being a left crank of the shared bicycle.

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