Compatible clamping type tooth piece high-density rotating type flywheel structure based on split type outer sleeve

Abstract

The utility model relates to the technical field of rotary flywheels, in particular to a high-density rotary flywheel structure compatible with clamping type tooth pieces based on a split type outer sleeve, which comprises an outer sleeve assembly and a core assembly, the outer sleeve assembly comprises an outer sleeve, clamping type tooth piece connectors used for installing flywheel tooth pieces are evenly arranged on the outer side wall of the outer sleeve, and the core assembly is arranged on the outer side wall of the outer sleeve. The minimum compatible tooth piece of the flywheel tooth piece is 11T, the flywheel tooth piece is matched with a 9-12-speed clamping type tooth piece set, and a 60-equal-part precise ratchet ring is arranged in the outer sleeve. The rotary flywheel has the advantages that by adopting the phase difference layout of the 60-equal-part precise ratchet ring and the 6 high-carbon steel pawls, 120 times of meshing of each circle is achieved, the idling angle is only 3 degrees, compared with the design of 18-24 teeth of a traditional rotary flywheel, the meshing density is improved by 5-6 times, the response speed is improved by 400%, speed changing during riding is more accurate and smoother, and the speed changing efficiency is improved. Particularly, under the conditions of high-speed riding and frequent speed change, the riding comfort and efficiency can be remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of rotary flywheel, concretely is the high density rotary flywheel structure of compatible cassette tooth piece based on split type outer cover. BACKGROUND

[0002] Rotary flywheel is a key component in the bicycle transmission system, its performance directly affects the smoothness of riding and the accuracy of gear shifting. The traditional rotary flywheel usually adopts an integral structure, although the structure is simple, but there is certain limitation in compatibility, engagement density and response speed. With the continuous development of bicycle gear shifting system, especially the popularization of 9-speed, 10-speed, 11-speed and even 12-speed system, the design of traditional rotary flywheel has been unable to meet the needs of modern high-performance bicycles.

[0003] The rotary flywheel in the prior art usually adopts 18-24 teeth ratchet design, the engagement density is low, resulting in a large idle angle (usually 15°), the response speed is slow, which affects the smoothness of riding and the accuracy of gear shifting. In addition, the tooth piece compatibility of the traditional rotary flywheel is poor, usually only suitable for specific tooth piece group, unable to flexibly cope with different speed gear shifting system. These problems limit the application of rotary flywheel in high-performance bicycles.

[0004] Now the market is similar product structure is in the rotary flywheel (screw type flywheel) outer cover again installs a can compatible cassette tooth piece outer cover, the rotary flywheel (screw type flywheel) outer cover of the present application is redesigned can directly compatible cassette and screw type flywheel tooth piece group constitutes 9-12 speed cassette flywheel speed, and proposes the high density rotary flywheel structure of compatible cassette tooth piece based on split type outer cover to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] In view of the problems existing in the prior art, the utility model discloses a compatible cassette tooth piece high density rotary flywheel structure based on split type cover, adopts the technical scheme, including cover assembly and core subassembly, the cover assembly includes the cover, the lateral wall of the cover is evenly provided with the cassette tooth piece interface for installing the flywheel tooth piece, the minimum compatible tooth piece of flywheel tooth piece is 11T, and is adapted to 9-12 speed cassette tooth piece group, the inside integral moulding of the cover is provided with 60 equal division precision ratchet ring, the inside wall upper end and the inside wall lower end of the cover are all provided with the screw thread, the core subassembly includes the core, high carbon steel pawl and elastic sheet, the core is arranged in the inside of the cover and is installed through the auxiliary assembly and the cover cooperation, the high carbon steel pawl is six and is evenly distributed in the outside of the core in two groups, the high carbon steel pawl is 60 equal division ratchet and is different in phase with six high carbon steel pawls, under the condition that idle angle is 3 DEG, realizes 120 times engagement per circle, the high carbon steel pawl is pre -tensioned through the elastic sheet and the cover, the bottom of the cover is provided with the flywheel lock ring for limiting the core, the flywheel lock ring is installed with the screw thread cooperation of the inside wall lower end of the cover, the inside of the flywheel lock ring is provided with the steel ball track, the inside cavity lateral wall middle part of the cover is also provided with the steel ball track, the outside wall lower end and the outside wall middle part of the core are all provided with the recess that is installed with the steel ball track cooperation.

[0006] As a preferred technical scheme of the utility model, the auxiliary assembly includes a lock nut and a steel ball, the lock nut is threadedly installed on the top of the cover, the steel ball is divided into two groups, and the two groups of steel balls are respectively arranged in the steel ball tracks at the connection positions of the flywheel lock ring and the core and the connection positions of the cover and the core.

[0007] As a preferred technical scheme of the utility model, the interval between the high carbon steel pawls in each group is 60 DEG, and the phase difference between the groups is 3 DEG. The initial rigidity of the elastic sheet is 0.8 N / mm, and the final rigidity is 1.5 N / mm.

[0008] As a preferred technical scheme of the utility model, the pre-tightening force of the flywheel tooth ring is greater than or equal to 50 Nm.

[0009] The utility model has the advantages of:

[0010] 1. High engagement density and fast response: by adopting the phase difference layout of the 60 equal division precision ratchet ring and the six high carbon steel pawls, the utility model realizes 120 times engagement per circle, and the idle angle is only 3 DEG. Compared with the 18-24 tooth design of the traditional rotary flywheel, the engagement density is increased by 5-6 times, and the response speed is increased by 400%. This makes the gear shifting more accurate and smooth during riding, especially in the case of high-speed riding and frequent gear shifting, which can significantly improve the comfort and efficiency of riding.

[0011] 2. Wide tooth piece compatibility: the minimum compatible tooth piece of the flywheel structure of the utility model is 11T, and the 9-12 speed card type tooth piece group is adapted, different speed variable speed systems can be flexibly coped with, compared with the minimum compatible tooth piece 13T of the traditional rotary flywheel, the tooth ratio range of the utility model is increased by 54.5%, a wider tooth ratio selection can be provided, and the needs of different riding scenes are met;

[0012] 3. The split type design enhances the maintainability: the split type cover design is adopted, the cover assembly and the core assembly are installed in cooperation through the auxiliary assembly, so that the disassembly and maintenance of the flywheel are more convenient, and the cover and the core are integrally forged and formed, the process is simple and suitable for mass production, in addition, through the design of the flywheel tooth ring and the steel ball, the stability and maneuverability of the flywheel structure are further improved, and the service life of the flywheel is prolonged;

[0013] 4. Adapt to the existing variable speed kit: the flywheel structure of the utility model can adapt to the existing mainstream variable speed kit, without replacing the hub, the upgrade cost of the user is reduced, and the market competitiveness of the product is improved;

[0014] 5. Optimized spring piece design: through the design that the initial segment stiffness of the spring piece is 0.8N / mm and the final segment stiffness is 1.5N / mm, the utility model can quickly realize the occlusion buffering and resetting, and the response speed and stability of the flywheel are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0016] Figure 1 It is the first perspective view of the structure of the utility model;

[0017] Figure 2 It is the second perspective view of the structure of the utility model;

[0018] Figure 3 It is the top view cross-section structure schematic view of the utility model;

[0019] Figure 4 It is the front view cross-section structure schematic view of the utility model;

[0020] Figure 5 It is the structure explosion view of the utility model.

[0021] In the figure: 1 outer sleeve assembly, 2 core subassembly, 3 outer sleeve, 4 cassette tooth interface, 5 precision ratchet ring, 6 thread, 7 core, 8 high carbon steel pawl, 9 spring, 10 auxiliary assembly, 11 flywheel lock ring, 12 steel ball, 13 lock nut, 14 flywheel tooth. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] As Figures 1 to 5The utility model discloses a compatible cassette tooth piece high density rotation formula flywheel structure based on split type cover, adopts the technical scheme, including cover assembly 1 and core subassembly 2, cover assembly 1 includes cover 3, the outside wall of cover 3 evenly is equipped with cassette tooth piece interface 4 for installing flywheel tooth piece 14, and the minimum compatible tooth piece of flywheel tooth piece 14 is 11T, and the adaptation 9-12 speed cassette tooth piece group, the inside integral moulding of cover 3 is provided with 60 equal division precision ratchet ring 5, the inside wall upper end and the inside wall lower end of cover 3 all are equipped with thread 6, and core subassembly 2 includes core 7, high carbon steel pawl 8 and elastic sheet 9, and core 7 sets up in the inside of cover 3 and is installed through auxiliary assembly 10 and cover 3 cooperation, and high carbon steel pawl 8 is six in all and is evenly distributed in the outside of core 7 in two groups, and high carbon steel pawl 8 is 60 equal division ratchet and is arranged with 6 high carbon steel pawl 8 phase difference, in the condition that idle angle is 3 DEG, realizes 120 times engagement per circle, and high carbon steel pawl 8 is pre-tightened with cover 3 through elastic sheet 9, and the bottom of cover 3 is provided with flywheel lock ring 11 for limiting core 7, and flywheel lock ring 11 is installed with the cooperation of the thread 6 of the inside wall lower end of cover 3, and the inside of flywheel lock ring 11 is equipped with steel ball track, and the inner chamber lateral wall middle part of cover 3 is also equipped with steel ball track, and the outside wall lower end and the outside wall middle part of core 7 all are equipped with recess that installs with the cooperation of steel ball track, through the cooperation of high carbon steel pawl 8 and precision ratchet ring 5, engagement is installed simultaneously, and cover 3 is set up in the outside of core 7, and high carbon steel pawl 8 is pre-tightened with cover 3 through elastic sheet 9, and simultaneously 60 equal division precision ratchet ring 5 and 6 high carbon steel pawl 8 phase difference arrangement, can realize 120 times engagement per circle, and idle angle 3 DEG, and the engagement density of traditional rotation formula 18-24 teeth is promoted 5-6 times, and the response speed is promoted 400% (15 DEG:3 DEG), then through flywheel tooth piece 14 installation in the outside of cover 3, and make flywheel tooth piece 14 with cassette tooth piece interface 4 cooperation installation, and through setting minimum compatible tooth piece is 11T traditional rotation formula >=13T, and the tooth ratio range is promoted 54.5% (calculates with 11-34T:14-28T), then through the lock nut 13 of cover 3 top is closed with thread, through cassette tooth piece stacking, supports 9 / 10 / 11 speed system, adapts to the existing various specifications variable speed cover set, need not to change the hub.

[0024] As a preferred technical scheme of the utility model, the auxiliary assembly 10 includes the lock nut 13 and the steel ball 12, the lock nut 13 is threadedly installed on the top of the cover 3, the steel ball 12 is two groups, the two groups of steel balls 12 are respectively arranged in the steel ball tracks at the connection between the flywheel lock ring 11 and the core 7 and the connection between the cover 3 and the core 7, the steel balls 12 are divided into two groups, and the two groups of steel balls 12 are respectively installed at the connection between the flywheel tooth ring 11 and the core 7 and the connection between the elastic sheet 9 and the core 7, so as to improve the mobility of the rotation formula flywheel structure.

[0025] As a preferred technical scheme of the utility model, interval between each high carbon steel ratchet wheel is 60°, phase difference between groups is 3°, initial stage stiffness of elastic sheet 9 is 0.8N / mm, and final stage stiffness is 1.5N / mm, and through the elastic sheet 9, the occlusion buffering and the fast resetting can be realized quickly.

[0026] As a preferred technical scheme of the utility model, pre-tightening force of the flywheel tooth ring 11 is greater than or equal to 50Nm.

[0027] The utility model discloses a working principle: through the cooperation occlusion installation of high carbon steel ratchet claw 8 and precision ratchet ring 5, while the outer sleeve 3 is set in the outside of core 7, and through elastic sheet 9, high carbon steel ratchet claw 8 and outer sleeve 3 are pre-tightening installation, while 60 equal-division precision ratchet ring 5 and 6 high carbon steel ratchet claw 8 phase difference layout, then through the flywheel tooth piece 14 installation in the outside of outer sleeve 3, and make flywheel tooth piece 14 and cassette tooth piece interface 4 cooperate installation, then through lock nut 13 to the top of outer sleeve 3 is screwed closed, through cassette tooth piece stacking, supports 9 / 10 / 11 speed system, adapts to various specifications of speed kit of existing, need not to change the hub.

[0028] The components not described in detail in the present text are prior art.

[0029] The above has made detailed description to the specific embodiment of the utility model, but the utility model is not limited to the above embodiment, still can make various changes within the knowledge range of the ordinary skill in the art without departing from the purpose of the utility model, and the modification or deformation without creative labor still is within the protection scope of the utility model.

Claims

1. A compatible cassette-tooth high-density rotor structure based on split casing, comprising a casing assembly (1) and a core assembly (2), characterized in that, The outer sleeve assembly (1) comprises an outer sleeve (3), the outer side wall of which is uniformly provided with a cassette blade interface (4) for installing a flywheel blade (14), and the inner part of the outer sleeve (3) is integrally provided with a 60-equal-division precision ratchet ring (5), the inner side wall upper end and the inner side wall lower end of the outer sleeve (3) are both provided with a thread (6), the core assembly (2) comprises a core (7), a high-carbon steel pawl (8) and a spring piece (9), the core (7) is arranged in the inner part of the outer sleeve (3) and is installed in cooperation with the outer sleeve (3) through an auxiliary assembly (10), the high-carbon steel pawl (8) is six in total and is evenly distributed in two groups on the outer part of the core (7), the high-carbon steel pawl (8) is pre-tightened with the outer sleeve (3) through the spring piece (9), the bottom end of the outer sleeve (3) is provided with a flywheel lock ring (11) for limiting the core (7), the flywheel lock ring (11) is screw-connected and installed in cooperation with the thread (6) at the lower end of the inner side wall of the outer sleeve (3), the inner side of the flywheel lock ring (11) is provided with a steel ball track, the middle part of the inner cavity side wall of the outer sleeve (3) is also provided with a steel ball track, and the lower end of the outer side wall and the middle part of the outer side wall of the core (7) are both provided with a groove for installing the steel ball track in cooperation.

2. The split casing based compatible card style vane high density rotational energy storage structure of claim 1, wherein: The auxiliary assembly (10) comprises a lock nut (13) and a steel ball (12), the lock nut (13) is screw-connected and installed at the top of the outer sleeve (3), and the steel ball (12) is two groups, the two groups of steel balls (12) are respectively arranged in the inner part of the steel ball track at the connection part between the flywheel lock ring (11) and the core (7) and in the inner part of the steel ball track at the connection part between the outer sleeve (3) and the core (7).

3. The split casing based compatible cartridge tooth high density rotational flywheel structure of claim 1, wherein: The interval between the high-carbon steel pawls in each group is 60°, the phase difference between the groups is 3°, the initial rigidity of the spring piece (9) is 0.8 N / mm, and the final rigidity is 1.5 N / mm.

4. The split casing based compatible card style vane high density rotational energy storage structure of claim 1, wherein: The pre-tightening force of the flywheel lock ring (11) is greater than or equal to 50 Nm.

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