Quick-response bicycle hub inner transmission

Abstract

A quick-response bicycle hub inner transmission is characterized in that through an assembly structure of a hub spindle, a fixing sleeve, a speed change control sleeve and accessories, the combination torque of a clutch is reduced, and the locking torque of a sun gear is reduced, so that gear shifting resistance is reduced, and quick response of gear shifting is achieved; a main assembly body comprises a shaft core assembly body, a left end cover assembly body, an output disc assembly body, a planet carrier assembly body, a right end cover assembly body and a hub, a power input is arranged on the right side, a power output is arranged on the middle section, and a built-in roller type brake is arranged on the left side.

Description

TECHNICAL FIELD

[0001] The present technology belongs to the field of bicycle derailleur, further belongs to the category of bicycle hub internal derailleur. BACKGROUND

[0002] The bicycle hub internal derailleur, the shifting process in the riding is load shifting, the rotation of the derailleur handle cannot realize the shifting immediately, the rotation of the derailleur handle is only to store the rotation torque of the handle to a buffer torsion spring, when the bicycle crank rotates to the top dead center area or the bottom dead center area, the transmission load is reduced, and the shifting process can be realized, so the shifting response speed of the bicycle hub internal derailleur is an important experience index. SUMMARY

[0003] A quick response bicycle hub internal derailleur, characterized in that the assembly structure of the hub main shaft, the fixed sleeve, the derailleur control sleeve and the accessories, the combination torque of the clutch is reduced, the locking torque of the center gear is reduced, and the quick response of the shifting is realized.

[0004] A quick response bicycle hub internal derailleur, characterized in that the total assembly body includes shaft core assembly body, left end cover assembly body, output disc assembly body, planet carrier assembly body, right end cover assembly body, hub, hub sleeve, hub bolt, left end locking nut, left end nut, left end bearing, right end outer bearing, right end inner bearing, right end nut, right end locking nut, the power input is arranged on the right side, the power output is arranged in the middle section, and the left side is an internal roller brake;

[0005] The shaft core assembly body includes hub main shaft, brake arm, brake rotating arm, brake rotating disc, brake seat, brake cam, derailleur control sleeve return torsion spring, derailleur control sleeve support ring, fixed sleeve support ring, output stage clutch spring, output stage outer center gear, output stage inner center gear, input stage inner center gear, input stage outer center gear, input stage clutch assembly body, input stage clutch spring, derailleur control sleeve, fixed sleeve, derailleur pulley disc, derailleur pulley lead rod assembly, derailleur buffer torsion spring, derailleur buffer torsion spring pre-tightening disc, derailleur adapter disc, input stage outer center gear locking column, input stage inner center gear locking column, gear locking assembly, output stage inner center gear locking column, output stage outer center gear locking column, output stage clutch assembly body, brake pull rod assembly;

[0006] The left end cover assembly body includes left end cover, brake tray, brake shoe, brake shoe return spring, brake column support, brake column support fixing bolt, brake cam return spring, brake roller;

[0007] The output disc assembly comprises an output disc, a roller cage, rollers, and a roller cage limiting spring.

[0008] The planetary carrier assembly comprises a planetary carrier, an input stage ring gear, an output stage ring gear, a planetary gear shaft, a planetary gear needle bearing, an input stage small planetary gear, an input stage large planetary gear, an output stage large planetary gear, and an output stage small planetary gear.

[0009] The right end cover assembly comprises a right end cover, a flywheel seat, and an input stage toothed disc.

[0010] The clutch assembly comprises a clutch, a clutch control sleeve, and a clutch control pin.

[0011] The gear locking assembly comprises a gear locking ring, a spring, a steel ball, and a jackscrew.

[0012] Further, in the shaft core assembly, the hub main shaft is fixedly connected between the bicycle forks in a common manner, and the outer periphery of the hub main shaft is sequentially sleeved from left to right with a brake seat, a variable speed control sleeve return torsion spring, a variable speed control sleeve support ring, a fixed sleeve support ring, a variable speed control sleeve, a fixed sleeve, a variable speed adapter disc, a variable speed buffer torsion spring, a variable speed buffer torsion spring pre-tightening disc, and a variable speed pull wire disc. The brake seat, the left end of the variable speed control sleeve return torsion spring, the fixed sleeve support ring, and the fixed sleeve are fixedly connected with the hub main shaft, and the remaining parts are rotatably connected with the hub main shaft.

[0013] The left end of the outer periphery of the brake seat is supported by a left end bearing, the right end of the outer periphery is fixedly connected with a brake tray through external splines, the left end step portion is provided with external splines for connecting a brake arm, the middle portion of the brake seat is provided with an axial through groove, and the brake turntable is connected with the brake cam through the axial through groove and can limit the rotation angle of the brake cam.

[0014] In the shaft core assembly, the outer periphery of the fixed sleeve is sequentially sleeved from left to right with an output disc assembly, an output stage clutch assembly, a planetary carrier assembly, an output stage outer center gear, an output stage inner center gear, a gear locking assembly, an input stage inner center gear, an input stage outer center gear, an input stage clutch assembly, and a right end cover assembly.

[0015] Further, the right end of the fixed sleeve is provided with two protruding portions which are press-fitted into the right end groove of the hub main shaft, and a slot is left for the right end of the variable speed control sleeve to pass through. The left end of the fixed sleeve is provided with a groove portion which is press-fitted into the fixed sleeve support ring. The variable speed control sleeve is sleeved between the outer periphery of the hub main shaft and the inner periphery of the fixed sleeve, the left end of the variable speed control sleeve is connected with the variable speed control sleeve support ring through the fixed sleeve support ring, and the right end of the variable speed control sleeve is connected with the variable speed adapter disc through the fixed sleeve.

[0016] The fixed sleeve is provided with two semicircular radial through grooves, four square radial through holes and one circular radial through hole in the axial direction, and a total of seven hole positions, and the through holes from left to right are sequentially fitted with an output clutch control pin, an output outer side sun gear locking column, an output inner side sun gear locking column, a gear locking assembly, an input inner side sun gear locking column, an input outer side sun gear locking column and an input clutch control pin.

[0017] The left end extension part of the variable speed control sleeve return torsion spring is inserted into the radial hole of the hub spindle, the right end extension part is inserted into the axial hole of the variable speed control sleeve support ring, and the variable speed control sleeve return torsion spring is in a pre-tightened state, the inner periphery of the variable speed control sleeve support ring is connected with the hub spindle and can rotate freely relative to the hub spindle, the outer periphery is connected with the fixed sleeve in a clearance fit, two special-shaped through holes are arranged on the circumference of the variable speed control sleeve support ring and are connected with the left end extension part of the variable speed control sleeve to bear the radial force of the variable speed control sleeve, and the outer periphery of the fixed sleeve support ring is provided with two protruding parts which are press-fitted into the position of the left end groove of the fixed sleeve to bear the radial force of the fixed sleeve and the anti-rotation torque of the fixed sleeve.

[0018] Further, the outer side sun gear of the output stage, the inner side sun gear of the output stage, the inner side sun gear of the input stage and the outer side sun gear of the input stage are respectively engaged with corresponding planetary gears, the inner peripheries of the four sun gears are provided with uniformly distributed circular arc grooves and are respectively corresponded to the four locking columns installed in the square radial through grooves of the fixed sleeve, the lifting of the locking columns is controlled by the variable speed control sleeve, the lifting of any locking column can control the locking of the corresponding sun gear, when the sun gear is locked, the outer peripheral surface of the locking column is pressed into the circular arc groove in the inner periphery of the sun gear, the contact of the circular arc surface generates two components of the locking force, one component is pressed in the fixed sleeve in the circumferential direction, and the other component is pressed in the outer peripheral surface of the variable speed control sleeve in the radial direction, the radial component of the variable speed control sleeve generates a friction force which is one of the shift resistances, since the component is smaller than the resultant force, the shift resistance is reduced.

[0019] Further, the variable speed pull wire disc is rotated in a general manner, the rotation of the variable speed pull wire disc drives the rotation of the variable speed control sleeve to realize the gear shifting function, the variable speed buffer torsion spring pre-tightening disc is anti-rotationally connected with the variable speed pull wire disc, the right end of the variable speed buffer torsion spring is fixed to the variable speed pull wire disc, the left end passes through the variable speed buffer torsion spring pre-tightening disc and is connected with the variable speed adapter disc, and the variable speed buffer torsion spring is in a pre-tightened state, the left end shaft sleeve part of the right end locking nut passes through the inner peripheries of the variable speed pull wire disc and the variable speed adapter disc and locks the fixed sleeve.

[0020] Further, in the left end cover assembly, the left end cover is supported by the left end bearing on the brake seat, and the spider is connected to the spider bolt through the setting of the outer stop buckle support spider, the brake tray is fixedly connected to the brake seat through the inner peripheral spline, the brake shoe is floatingly installed on the brake tray through the brake shoe return spring, the brake shoe can only move radially relative to the brake tray, and cannot rotate, the brake column frame is connected to the brake tray through the column frame fixing bolt, the brake roller is floatingly installed in the hole position of the brake column frame, the brake roller can only move radially relative to the brake column frame, and cannot rotate, one end of the brake cam return spring is connected to the brake column frame, and the other end is connected to the brake cam, and is in a pre-tightening state, so that the brake cam is in an empty position in a non-braking state.

[0021] Further, in the output disc assembly, the output disc is sleeved on the outer periphery of the fixed sleeve, and is connected to the output gear ring through the spline at the right end of the outer periphery, and the roller one-way clutch assembly is installed at the left end of the outer periphery, and the spline part of the inner periphery of the output disc is slidingly connected to the output clutch assembly, and the roller one-way clutch assembly is a general structure and will not be described again.

[0022] Further, in the planet carrier assembly, the structural parameters of the gear rings, planet gears and sun gears of the input stage and the output stage are completely the same, except that the assembly direction is changed, the planet gears are double-connected structures, and the planet carrier is an integral structure, the gear ring is meshed with the large planet gear, the input stage gear ring is connected to the flywheel seat outer periphery through the input stage disc, and is fixedly connected to the flywheel seat outer periphery, which is a power constant input structure, the input stage outer side sun gear is controllably connected to the flywheel seat inner periphery through the input clutch assembly, the output stage gear ring is fixedly connected to the outer periphery of the output disc, and the output stage outer side sun gear is controllably connected to the inner periphery of the output disc through the output clutch assembly.

[0023] Further, in the right end cover assembly, the flywheel seat is supported by the right end inner bearing on the outer periphery of the fixed sleeve, and is supported by the right end cover through the right end outer bearing, the right end of the outer periphery of the flywheel seat is provided with a spline for connecting the flywheel, the left end of the outer periphery of the flywheel seat is provided with a spline for connecting the input stage disc, and the inner peripheral spline part is slidingly connected to the input clutch assembly, the right end cover is connected to the spider through the spider bolt, the spider is supported by the setting of the outer stop buckle, and the outer periphery of the input stage disc is connected to the input stage gear ring.

[0024] Further, the input stage clutch assembly and the output stage clutch assembly in the clutch assembly have the same structure size, only the assembly direction is changed. The input stage clutch assembly is slidably connected to the inner periphery of the flywheel seat through the external periphery splines, and controllably connected to the input stage outer side sun gear through the teeth on the end surface. The output stage clutch assembly is slidably connected to the inner periphery of the output disc through the external periphery splines, and controllably connected to the output stage outer side sun gear through the teeth on the end surface. The clutch is sleeved on the outer periphery of the clutch control sleeve and can rotate relative to the clutch control sleeve. The clutch control sleeve is sleeved on the outer periphery of the fixed sleeve. The clutch control pin is fixedly connected with the clutch control sleeve, and the protruding end thereof passes through the semicircular slot hole of the fixed sleeve and cooperates with the control groove of the gear shift control sleeve. The rotation of the gear shift control sleeve can control the axial movement of the clutch control pin, thereby driving the axial movement of the clutch, and the combination and disengagement of the clutch are realized. When the clutch is in the combined state, it shares the torque of the transmission with the gear ring, so the combined torque is small, and the gear shifting resistance is reduced.

[0025] Further, the gear position locking assembly is composed of a gear position locking ring, a spring, a steel ball and a jack. The gear position locking ring is fixed on the outer periphery of the fixed sleeve at a position corresponding to the circular through hole by two jacks. The steel ball and the spring pass through the circular through hole and are press-fitted on the corresponding control position of the gear shift control sleeve by the jack, so that the gear shift control sleeve has a relative locking force at each corresponding gear position.

[0026] Further, the hub is made of aluminum alloy material. The hub sleeve is press-fitted on the left end of the inner periphery of the hub through the external periphery splines. The left end of the inner periphery of the hub sleeve is the brake drum of the brake, and the right end of the inner periphery of the hub sleeve is the power output drum. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is an axial view of the assembly of the quick-response bicycle hub internal derailleur.

[0028] Figure 2 It is a cross-sectional view of the total assembly of the quick-response bicycle hub internal derailleur.

[0029] Figure 3 It is an isometric view of the shaft core assembly of the quick-response bicycle hub internal derailleur.

[0030] Figure 4 It is an exploded view of the shaft assembly of the quick-response bicycle hub internal derailleur.

[0031] Figure 5 It is a cross-sectional view of the shaft core assembly of the quick-response bicycle hub internal derailleur.

[0032] Figure 6 It is an isometric view of the planet carrier assembly of the quick-response bicycle hub internal derailleur.

[0033] Figure 7 is a cross-sectional view of a planetary carrier assembly of a fast response bicycle hub internal derailleur.

[0034] Figure 8 is an isometric view of a clutch assembly of a fast response bicycle hub internal derailleur.

[0035] Figure 9 is an isometric view of an output disc assembly of a fast response bicycle hub internal derailleur.

[0036] Figure 10 is a cross-sectional view of a right end cap assembly of a fast response bicycle hub internal derailleur.

[0037] Figure 11 is a cross-sectional view of a left end cap assembly of a fast response bicycle hub internal derailleur.

[0038] Explanation of the serial numbers and names of the parts and components in the drawings: Figure 2 In the drawings, 001 is a shaft core assembly, 002 is a left end locking nut, 003 is a left end nut, 004 is a left end bearing, 005 is a left end cap assembly, 006 is a hub bolt, 007 is a hub sleeve, 008 is a hub, 009 is an output disc assembly, 010 is a planetary carrier assembly, 011 is a right end cap assembly, 012 is a right end outer bearing, 013 is a right end inner bearing, 014 is a right end nut, and 015 is a right end locking nut. Figure 5In the figure, 001 / 001 is the main shaft of the flower drum, 001 / 002 is the brake arm, 001 / 003 is the brake rotating arm, 001 / 004 is the brake rotating disc, 001 / 005 is the brake seat, 001 / 006 is the brake cam, 001 / 007 is the reset torsion spring of the speed control sleeve, 001 / 008 is the support ring of the speed control sleeve, 001 / 009 is the fixed sleeve support ring, 001 / 010 is the output stage clutch spring, 001 / 011 is the output stage outer side central gear, 001 / 012 is the output stage inner side central gear, 001 / 013 is the input stage inner side central gear, 001 / 014 is the input stage outer side central gear, 001 / 015 is the input stage clutch assembly, 001 / 016 is the input stage clutch spring, 001 / 017 is the speed control sleeve, 001 / 018 is the fixed sleeve, 001 / 019 is the speed change pull wire disc, 001 / 020 is the speed change pull wire leading rod assembly, 001 / 021 is the speed change buffer torsion spring, 001 / 022 is the speed change buffer torsion spring pre-tightening disc, 001 / 023 is the speed change adapter disc, 001 / 024 is the input stage outer side central gear locking column, 001 / 025 is the input stage inner side central gear locking column, 001 / 026 is the gear locking assembly, 001 / 027 is the output stage inner side central gear locking column, 001 / 028 is the output stage outer side central gear locking column, 001 / 029 is the output stage clutch assembly, 001 / 030 is the brake pull rod assembly. Figure 7 In the figure, 010 / 001 is the planet carrier, 010 / 002 is the input stage ring gear, 010 / 003 is the output stage ring gear, 010 / 004 is the planetary gear shaft, 010 / 005 is the planetary gear needle bearing, 010 / 006 is the input stage small planetary gear, 010 / 007 is the input stage large planetary gear, 010 / 008 is the output stage large planetary gear, 010 / 009 is the output stage small planetary gear. Figure 8 In the figure, 001 / 015 / 001 is the clutch, 001 / 015 / 002 is the clutch control sleeve, 001 / 015 / 003 is the clutch control pin. Figure 9 In the figure, 009 / 001 is the output disc, 009 / 002 is the roller carrier, 009 / 003 is the roller, 009 / 004 is the roller carrier limiting spring. Figure 10 In the figure, 011 / 001 is the right end cover, 011 / 002 is the flywheel seat, 011 / 003 is the input stage toothed disc. Figure 11 In the figure, 005 / 001 is the left end cover, 005 / 002 is the brake tray, 005 / 003 is the brake shoe, 005 / 004 is the brake shoe reset spring, 005 / 005 is the brake column carrier, 005 / 006 is the brake column carrier fixing bolt, 005 / 007 is the brake cam reset spring, 005 / 008 is the brake roller. DETAILED DESCRIPTION

[0039] A quick response bicycle hub internal gear shift device, embodiments are according to the invention design a seven gear, quick response bicycle hub internal gear shift device with brake, the implementation scheme is only one embodiment of the invention, and cannot limit the protection scope of the invention, and is protected by the patent law within the scope of claims.

[0040] The specific embodiments are further described in detail below with reference to the accompanying drawings.

[0041] Referring to the drawings accompanying the specification Figure 1 and the accompanying drawings Figure 2 , the right side of the technical scheme is the power input side, the middle section is the power output side, the gear shift control system is on the right side, and the built-in roller brake is on the left side.

[0042] The specific embodiments are further described in detail below with reference to the accompanying drawings. Figure 2 The assembly relationship and function of each component and part in the drawings accompanying the specification, 001 is the shaft core assembly, which connects and supports the hub internal gear shift device between the bicycle rear fork through the hub spindle; 002 is the left end locking nut, 003 is the left end nut, which limits the axial movement of the hub internal gear shift device to the left and locks each other to prevent loosening; 004 is the left end bearing, the inner ring of which is supported on the brake seat, and the outer ring supports the left end cover; 005 is the left end cover assembly, 006 is the hub bolt, 008 is the hub, the left end cover is connected with the hub through a group of hub bolts, and the left end cover is provided with an outer stop for supporting the hub; 007 is the hub sleeve, which is pressed into the inner circumferential left end of the aluminum alloy hub through the spline, the left side of the hub sleeve is used for braking, and the right side of the hub sleeve is used for outputting power; 009 is the output disc assembly, which is connected to the output gear ring through the outer spline on the output disc, connected to the output stage clutch assembly through the inner spline on the output disc, and outputs power to the hub sleeve through the roller one-way clutch on the output disc assembly; 010 is the planet carrier assembly; 011 is the right end cover assembly, which is connected with the hub in the same way as the left end cover, the flywheel seat in the right end cover assembly is a power input member; 012 is the right end outer bearing, 013 is the right end inner bearing; 014 is the right end locking nut, 015 is the right end nut.

[0043] The specific embodiments are further described in detail below with reference to the accompanying drawings. Figure 5The assembly relationship and function of each component and part, 001 / 001 is a hub spindle, which is fixedly connected between the bicycle rear forks through a common way; 001 / 002 is a brake arm, which is connected with a brake seat through the inner spline of the semicircular arc section, and is fixedly connected with the bicycle rear forks through the circular hole at the other end, and bears the braking torque of the bicycle and other rotating torques of the hub spindle; 001 / 003 is a brake rotating arm, which is connected with a brake rotating disc through the inner spline of the semicircular arc end, and the other end is connected with a brake lever assembly; 001 / 004 is a brake rotating disc, which is embedded into the brake seat at the right end and connected with the protruding end of a brake cam, the rotation of the brake rotating arm drives the rotation of the brake cam, so that the brake roller moves radially outward to lift the brake shoe, and the brake shoe forms a braking torque through friction with the hub sleeve; 001 / 005 is a brake seat, the inner periphery of which is press-fitted into the groove of the hub spindle through two protruding parts, the left end of the outer periphery is supported by a bearing left end cover, and the right end of the outer periphery is connected with the brake tray through the outer spline, the left end step part has an outer spline for connecting the brake arm, and the middle part of the brake seat is provided with an axial through groove, the brake rotating disc and the brake cam are connected through the axial through groove, and the rotation angle of the brake cam can be limited; 001 / 006 is a brake cam; 001 / 007 is a variable speed control sleeve return torsion spring, 001 / 008 is a variable speed control sleeve support ring, 001 / 009 is a fixed sleeve support ring, the left end protruding part of the variable speed control sleeve return torsion spring is inserted into the radial hole of the hub spindle, the right end protruding part is inserted into the axial hole of the variable speed control sleeve support ring, and the variable speed control sleeve return torsion spring is in a pre-tightened state, the inner periphery of the variable speed control sleeve support ring is connected with the hub spindle and can rotate freely relative to it, the outer periphery is connected with the fixed sleeve in a clearance, two special-shaped through holes are arranged on the circumference of the variable speed control sleeve support ring, which are connected with the left end protruding part of the variable speed control sleeve and bear the radial force of the variable speed control sleeve, two protruding parts are arranged on the inner periphery of the fixed sleeve support ring and are press-fitted into the groove of the hub spindle, two protruding parts are arranged on the outer periphery and are press-fitted into the position of the right end groove of the fixed sleeve, which bear the radial force of the fixed sleeve and the rotating torque of the fixed sleeve; 001 / 010 is an output stage clutch spring.001 / 011 is the output stage outside the center gear, 001 / 012 is the output stage inside the center gear, 001 / 013 is the input stage inside the center gear, 001 / 014 is the input stage outside the center gear, the outer periphery of the four center gears is engaged with the corresponding planetary gear, the inner periphery of the four center gears is provided with uniformly distributed circular arc grooves, and each corresponds to the four locking columns installed in the radial slots of the fixed sleeve, the lifting of the locking column is controlled by the speed control sleeve, the lifting of any locking column can control the locking of the corresponding center gear, when the locking column is locked, the outer peripheral surface of the locking column is pressed into the circular arc groove in the inner periphery of the center gear, the contact of the circular arc surface makes the locking force produce two components, one component is pressed in the circumferential direction of the fixed sleeve, and the other component is pressed in the radial direction of the outer peripheral surface of the speed control sleeve, the friction force generated by the radial component on the rotation of the speed control sleeve is one of the resistance to shifting, because the component is smaller than the resultant force, so the shifting resistance is reduced; 001 / 015 is the input stage clutch assembly, 001 / 016 is the input stage clutch spring, the structure and size of the input stage clutch assembly and the input stage clutch spring are exactly the same as those of the output stage, only the assembly direction is changed; 001 / 017 is the speed control sleeve, 001 / 018 is the fixed sleeve, the inner periphery of the right end of the fixed sleeve is provided with two protrusions, which are pressed and fitted into the right end groove of the hub spindle, the left end of the fixed sleeve is provided with a groove, which is pressed and fitted into the fixed sleeve support ring, the speed control sleeve is sleeved between the outer periphery of the hub spindle and the inner periphery of the fixed sleeve, the left end of the speed control sleeve extends through the fixed sleeve support ring and is connected with the speed control sleeve support ring, the right end of the speed control sleeve extends through the fixed sleeve and is connected with the speed transfer disc, the outer periphery of the speed control sleeve is provided with seven control grooves, the fixed sleeve is provided with two semicircular radial through grooves, four square radial through holes and a circular radial through hole in the axial direction, the output stage clutch control pin, the output stage outside center gear locking column, the output stage inside center gear locking column, the gear locking assembly, the input stage inside center gear locking column, the input stage outside center gear locking column and the input stage clutch control pin are sequentially assembled in the through holes from left to right; 001 / 019 is the speed pull wire disc, 001 / 020 is the speed pull wire lead-out rod assembly, 001 / 021 is the speed buffer torsional spring, 001 / 022 is the speed buffer torsional spring pre-tightening disc, 001 / 023 is the speed transfer disc, the speed pull wire disc is rotated in a common way, the rotation of the speed pull wire disc drives the speed control sleeve to rotate to realize the shifting function, the speed buffer torsional spring pre-tightening disc is rotationally connected with the speed pull wire disc, the right end of the speed buffer torsional spring is locked to the speed pull wire disc, the left end of the speed buffer torsional spring passes through the speed buffer torsional spring pre-tightening disc and is connected with the speed transfer disc, and the speed buffer torsional spring is in a pre-tightening state; 014 is a right end locking nut, which passes through the inner periphery of the speed pull wire disc and the speed transfer disc through the left end shaft sleeve part, and locks the fixed sleeve;001 / 024 is the outer center gear locking post of the input stage; 001 / 025 is the inner center gear locking post of the input stage; 001 / 026 is the gear locking assembly; 001 / 027 is the inner center gear locking post of the output stage; and 001 / 028 is the outer center gear locking post of the output stage. The four center gear locking posts are cylindrical and are installed in the square radial through holes of the fixed sleeve. The gear locking assembly consists of a gear locking ring, a spring, a steel ball, and set screws. Two set screws fix the gear locking ring to the outer circumference of the fixed sleeve at the position corresponding to the circular through hole. The steel ball and spring pass through the circular through hole and are pressed into the corresponding control position of the transmission control sleeve by the set screws, so that the transmission control sleeve has a relative locking force in each corresponding gear. 001 / 029 is the output stage clutch assembly; and 001 / 030 is the brake lever assembly.

[0044] Instruction manual attached Figure 7 The assembly relationships and functions of each component and part are as follows: 010 / 001 is the planet carrier, 010 / 002 is the input stage ring gear, 010 / 003 is the output stage ring gear, 010 / 004 is the planetary gear shaft, 010 / 005 is the planetary gear needle roller bearing, 010 / 006 is the input stage small planetary gear, 010 / 007 is the input stage large planetary gear, 010 / 008 is the output stage large planetary gear, and 010 / 009 is the output stage small planetary gear. The structural parameters of the input and output stage ring gears, planetary gears, and center gears in the planet carrier assembly are completely identical, only modified... With the assembly direction changed, the planetary gears are a double-linked structure, the planetary carrier is a one-piece structure, the ring gear meshes with the large planetary gear, and the input stage ring gear is fixedly connected to the outer circumference of the flywheel seat through its input stage gear disc, which is a constant power input structure. The outer central gear of the input stage is controllably connected to the inner circumference of the flywheel seat through the input stage clutch assembly, so the input stage planetary gear transmission system is a reduction transmission; the output stage ring gear is fixedly connected to the outer circumference of the output disc, and the outer central gear of the output stage is controllably connected to the inner circumference of the output disc through the output stage clutch assembly, so the output stage planetary gear transmission system is an acceleration transmission.

[0045] Instruction manual attached Figure 8The assembly relationship and function of each component and part, 001 / 015 / 001 is a clutch, 001 / 015 / 002 is a clutch control sleeve, 001 / 015 / 003 is a clutch control pin, the structural size of the input stage clutch assembly and the output stage clutch assembly is completely same, only the assembly direction is changed, the input stage clutch is connected to the inner periphery of the flywheel seat through the outer periphery spline and is controllably connected to the input stage outer side central gear through the tooth shape of the end surface, the output stage clutch assembly is connected to the inner periphery of the output disc through the outer periphery spline and is controllably connected to the output stage outer side central gear through the tooth shape of the end surface, the clutch inner sleeve is sleeved on the outer periphery of the clutch control sleeve and can rotate relative to the clutch control sleeve, the clutch control sleeve is sleeved on the outer periphery of the fixed sleeve, the clutch control pin is fixedly connected with the clutch control sleeve, the protruding end of the clutch control pin passes through the semicircular slot hole of the fixed sleeve and cooperates with the control groove of the gear shifting control sleeve, the rotation of the gear shifting control sleeve can control the axial movement of the clutch control pin, thereby driving the axial movement of the clutch, realizing the combination and separation of the clutch, when the clutch is in the combined state, it shares the transmission torque with the gear ring, so the combined torque is small, reducing the gear shifting resistance.

[0046] The specification is attached Figure 9 The assembly relationship and function of each component and part, 009 / 001 is an output disc, 009 / 002 is a roller holder, 009 / 003 is a roller, 009 / 004 is a roller holder limiting spring, the output disc is sleeved on the outer periphery of the fixed sleeve, is always connected to the output stage gear ring through the outer periphery right end spline, the outer periphery left end installs the roller one-way clutch assembly, the spline part of the inner periphery of the output disc is slidably connected to the output stage clutch, the roller one-way clutch assembly is a general structure and will not be described again.

[0047] The specification is attached Figure 10 The assembly relationship and function of each component and part, 011 / 001 is a right end cover, 011 / 002 is a flywheel seat, 011 / 003 is an input stage gear disc, the flywheel seat is supported on the outer periphery of the fixed sleeve through the right end inner bearing and is supported on the right end cover through the right end outer bearing, the right end of the outer periphery of the flywheel seat is provided with a spline for connecting a flywheel (not shown), the left end of the outer periphery of the flywheel seat is provided with a spline for connecting the input stage gear disc, the inner periphery spline part of the flywheel seat is connected to the input stage clutch assembly, the right end cover is connected to a hub through a hub bolt and supports the hub through the outer stopper, the outer periphery of the input stage gear disc is connected to the input stage gear ring.

[0048] The specification is attached Figure 11The assembly relationship and function of each component and part are as follows: 005 / 001 is a left end cover, 005 / 002 is a brake tray, 005 / 003 is a brake shoe, 005 / 004 is a brake shoe return spring, 005 / 005 is a brake column, 005 / 006 is a brake column fixing bolt, 005 / 007 is a brake cam return spring, and 005 / 008 is a brake roller. The left end cover is supported on the brake seat through a left end bearing, and the left end cover is connected with a hub through a hub bolt. The hub is supported through an outer stopper. The brake tray is fixedly connected with the brake seat through an inner peripheral spline. The brake shoe is floatingly installed on the brake tray through the brake shoe return spring. The brake shoe can only move radially relative to the brake tray, and cannot rotate. The brake column is connected with the brake tray through the column fixing bolt. The brake roller is floatingly installed in a hole of the brake column. The brake roller can only move radially relative to the brake column, and cannot rotate. The brake cam return spring is connected with the brake column at one end, and connected with the brake cam at the other end, and is in a pre-tightening state, so that the brake cam is kept in an empty position in a non-braking state.

[0049] The power transmission route of the seven-gear quick-response bicycle hub internal derailleur with a brake is: a freewheel seat--an input stage tooth disc (or an input stage clutch, an input stage outer center gear)--an input stage gear ring--an input stage planetary gear--a planet carrier--an output stage planetary gear--an output stage gear ring (or an output stage clutch, an output stage outer center gear)--an output disc--a roller one-way clutch--a hub insert--a hub.

[0050] The speed control route of the seven-gear quick-response bicycle hub internal derailleur with a brake is: a speed control pulley disc--a speed control buffer torsion spring--a speed control adapter disc--a speed control sleeve--a center gear locking column (an input stage clutch control pin, an output stage clutch control pin)--a center gear (an input stage clutch, an output stage clutch).

[0051] The brake control route of the seven-gear quick-response bicycle hub internal derailleur with a brake is: a brake pull rod assembly--a brake rotating arm--a brake rotating disc--a brake cam--a brake roller--a brake shoe--a hub insert--a hub.

[0052] The brake torque transmission route of the seven-gear quick-response bicycle hub internal derailleur with a brake is: a hub--a hub insert--a brake shoe--a brake tray--a brake seat--a brake arm.

[0053] The control and speed ratio table of the seven-gear quick-response bicycle hub internal derailleur with a brake is as follows:

[0054] Gear 1 2 3 4 5 6 Speed ratio Gear difference

[0055] 1st gear engaged free free free locked disengaged 0.559 0

[0056] 2nd gear engaged free free locked free disengaged 0.675 20.75%

[0057] 3rd gear disengaged free locked free locked disengaged 0.828 22.66%

[0058] 4th gear engaged free free free free engaged 1.000 20.77%

[0059] 5th gear disengaged locked free locked free disengaged 1.214 21.4%

[0060] 6th gear disengaged free locked free free engaged 1.481 21.99%

[0061] 7th gear disengaged locked free free free engaged 1.798 21.40%

[0062] where 1 indicates the output stage clutch, 2 indicates the output stage outer sun gear, 3 indicates the output stage inner sun gear, 4 indicates the input stage inner sun gear, 5 indicates the input stage outer sun gear, and 6 indicates the input stage clutch.

Claims

1. A quick response, internally shifting hub for a bicycle characterized by: The total assembly includes an axle core assembly, a left end cover assembly, an output disc assembly, a planet carrier assembly, a right end cover assembly, a hub, a hub sleeve, a hub bolt, a left end locking nut, a left end nut, a left end bearing, a right end outer bearing, a right end inner bearing, a right end nut, a right end locking nut, a power input is arranged at the right side, a power output is arranged at the middle section, and an internal roller brake is arranged at the left side; The axle core assembly includes a hub main shaft, a brake arm, a brake rotating arm, a brake rotating disc, a brake seat, a brake cam, a variable speed control sleeve reset torsion spring, a variable speed control sleeve support ring, a fixed sleeve support ring, an output stage clutch spring, an output stage outer center gear, an output stage inner center gear, an input stage inner center gear, an input stage outer center gear, an input stage clutch assembly, an input stage clutch spring, a variable speed control sleeve, a fixed sleeve, a variable speed pulling disc, a variable speed pulling lead rod assembly, a variable speed buffer torsion spring, a variable speed buffer torsion spring pre-tightening disc, a variable speed adapter disc, an input stage outer center gear locking column, an input stage inner center gear locking column, a gear locking assembly, an output stage inner center gear locking column, an output stage outer center gear locking column, an output stage clutch assembly, a brake pulling rod assembly; The left end cover assembly includes a left end cover, a brake tray, a brake shoe, a brake shoe reset spring, a brake column holder, a brake column holder fixing bolt, a brake cam reset spring, and a brake roller; The output disc assembly includes an output disc, a roller holder, a roller, and a roller holder limiting spring; The planet carrier assembly includes a planet carrier, an input stage gear ring, an output stage gear ring, a planet gear shaft, a planet gear needle bearing, an input stage small planet gear, an input stage large planet gear, an output stage large planet gear, and an output stage small planet gear; The right end cover assembly includes a right end cover, a flywheel seat, and an input stage gear disc; The clutch assembly includes a clutch, a clutch control sleeve, and a clutch control pin; The gear locking assembly includes a gear locking ring, a spring, a steel ball, and a top screw.

2. A quick response, internally shifting hub for a bicycle as defined in claim 1, characterized in that: In the axle core assembly, the hub main shaft is fixedly connected between the bicycle rear forks in a general manner. The outer periphery of the hub main shaft is sequentially sleeved with a brake seat, a variable speed control sleeve reset torsion spring, a variable speed control sleeve support ring, a fixed sleeve support ring, a variable speed control sleeve, a fixed sleeve, a variable speed adapter disc, a variable speed buffer torsion spring, a variable speed buffer torsion spring pre-tightening disc, and a variable speed pulling disc from left to right. The brake seat, the left end of the variable speed control sleeve reset torsion spring, the fixed sleeve support ring, and the fixed sleeve are fixedly connected with the hub main shaft, and the remaining parts are rotatably connected with the hub main shaft. The left end of the outer periphery of the brake seat is supported by the left end cover through the left end bearing, and the right end of the outer periphery is fixedly connected with the brake tray through an external spline. The left end step portion is provided with an external spline for connecting the brake arm. An axial through groove is arranged in the middle part of the brake seat. The brake rotating disc and the brake cam are connected through the axial through groove and can limit the rotation angle of the brake cam. The outer periphery of the fixed sleeve of the shaft core assembly is sequentially sleeved with an output disc assembly, an output clutch assembly, a planet carrier assembly, an output side center gear, an output inner center gear, a gear locking assembly, an input inner center gear, an input side center gear, an input clutch assembly and a right end cover assembly from left to right.

3. A quick response, internally geared bicycle hub derailleur according to claim 2, characterised in that: The inner periphery of the right end of the fixed sleeve is provided with two protruding portions and is press-fitted into the right end groove of the hub main shaft, and a slot for the right end of the speed control sleeve to pass through is left; the left end of the fixed sleeve is provided with a groove portion and is press-fitted into the fixed sleeve support ring; the speed control sleeve is sleeved between the outer periphery of the hub main shaft and the inner periphery of the fixed sleeve, the left end of the speed control sleeve is connected to the speed control sleeve support ring through the fixed sleeve support ring, and the right end of the speed control sleeve is connected to the speed conversion disc through the fixed sleeve; The fixed sleeve is provided with two semicircular radial through grooves, four square radial through holes and one circular radial through hole in the axial direction, and a total of seven hole positions are formed; the output clutch control pin, the output side center gear locking column, the output inner center gear locking column, the gear locking assembly, the input inner center gear locking column, the input side center gear locking column and the input clutch control pin are sequentially assembled in the through holes from left to right; the outer periphery of the speed control sleeve is provided with seven control grooves and corresponds to the hole positions of the fixed sleeve. The left end of the speed control sleeve return torsion spring is inserted into the radial hole of the hub main shaft, the right end is inserted into the axial hole of the speed control sleeve support ring, and the speed control sleeve return torsion spring is in a pre-tightened state; the inner periphery of the speed control sleeve support ring is connected to the hub main shaft and can rotate freely relative to the hub main shaft; the outer periphery of the speed control sleeve support ring is connected to the fixed sleeve in a clearance fit; the speed control sleeve support ring is provided with two special-shaped through holes on the circumference, which are connected to the left end of the speed control sleeve and bear the radial force of the speed control sleeve; the outer periphery of the fixed sleeve support ring is provided with two protruding portions and is press-fitted into the left end groove of the fixed sleeve, which bears the radial force of the fixed sleeve and the anti-rotation torque of the fixed sleeve.

4. A quick response, internally shifting hub for a bicycle as defined in claim 2, characterized in that: The outer periphery of each of the four center gears is engaged with the corresponding planetary gear, the inner periphery of each of the four center gears is provided with uniformly distributed circular arc grooves, and each of the four center gears is correspondingly installed in the square radial through groove of the fixed sleeve; the locking column is controlled by the speed control sleeve, and the lifting of any locking column can control the locking of the corresponding center gear; when the locking column is locked, the outer periphery of the locking column is pressed into the circular arc groove in the inner periphery of the center gear, the contact between the circular arc surfaces generates two components of the locking force, one component is pressed in the circumferential direction of the fixed sleeve, and the other component is pressed in the radial direction of the speed control sleeve, the radial component of the locking force generates friction on the speed control sleeve, which is one of the resistance forces of gear shifting; since the component is smaller than the resultant force, the resistance force of gear shifting is reduced.

5. A quick response, internally shifting hub for a bicycle as defined in claim 2, characterized in that: The variable speed pull wire disc is rotated by a common mode, the rotation of the variable speed pull wire disc drives the rotation of the variable speed control sleeve to realize the gear shifting function, the variable speed buffer torsional spring pre-tightening disc is rotationally connected with the variable speed pull wire disc, the right end of the variable speed buffer torsional spring is fixed to the variable speed pull wire disc, the left end of the variable speed buffer torsional spring passes through the variable speed buffer torsional spring pre-tightening disc and is connected with the variable speed adapter disc, and the variable speed buffer torsional spring is in a pre-tightening state, the left end shaft sleeve part of the right end locking nut passes through the inner periphery of the variable speed pull wire disc and the variable speed adapter disc and is locked and fixed to the sleeve.

6. A quick response, internally shifting hub for a bicycle as defined in claim 1, characterized in that: In the left end cover assembly, the left end cover is supported on the brake seat through the left end bearing, the left end cover is connected with the hub through the hub bolt, and the hub is supported by the outer stopper, the brake tray is fixedly connected to the brake seat through the inner periphery spline, the brake shoe is floatingly mounted on the brake tray through the brake shoe return spring, the brake shoe can only move radially relative to the brake tray and cannot rotate, the brake column is connected to the brake tray through the column fixing bolt, the brake roller is floatingly mounted in the hole of the brake column, the brake roller can only move radially relative to the brake column and cannot rotate, one end of the brake cam return spring is connected to the brake column, one end is connected to the brake cam, and is in a pre-tightening state to keep the brake cam in an idle position in a non-braking state.

7. A quick response, internally shifting hub for a bicycle as defined in claim 1, characterized in that: In the output disc assembly, the output disc is sleeved on the outer periphery of the fixed sleeve, and is connected to the output gear ring through the spline on the outer right end, and the roller one-way clutch assembly is mounted on the outer left end, and the spline part on the inner periphery of the output disc is slidingly connected to the output clutch assembly.

8. A quick response, internally shifting hub for a bicycle as defined in claim 1, characterized in that: In the planetary carrier assembly, the structural parameters of the input gear ring, the output gear ring, the planetary gear and the central gear are completely the same, except that the assembly direction is changed, the planetary gear is a double connection structure, and the planetary carrier is an integral structure, the gear ring is meshed with the large planetary gear, the input gear ring is connected to the flywheel seat outer periphery through the input gear disc and is fixedly connected to the flywheel seat, and is a power constant input structure, the input side central gear is controllably connected to the flywheel seat inner periphery through the input clutch assembly, and the output gear ring is fixedly connected to the outer periphery of the output disc, and the output side central gear is controllably connected to the inner periphery of the output disc through the output clutch assembly.

9. A quick response, internally shifting hub for a bicycle as defined in claim 1, characterized in that: In the right end cover assembly, the flywheel seat is supported on the outer periphery of the fixed sleeve through the right end inner bearing and supported on the right end cover through the right end outer bearing, the right end of the outer periphery of the flywheel seat is provided with a spline for connecting the flywheel, the left end of the outer periphery of the flywheel seat is provided with a spline for connecting the input gear disc, the inner periphery spline part is slidingly connected to the input clutch assembly, the right end cover is connected with the hub through the hub bolt, the hub is supported by the outer stopper, and the outer periphery of the input gear disc is connected with the input gear ring.

10. A quick response, internally shifting hub for a bicycle as defined in claim 1, characterized in that: In the clutch assembly, the input stage clutch assembly and the output stage clutch assembly have the same structure size, only the assembly direction is changed. The input stage clutch assembly is slidably connected to the inner periphery of the flywheel seat through the outer periphery spline, and is controllably connected to the input stage outer side sun gear through the teeth on the end surface. The output stage clutch assembly is slidably connected to the inner periphery of the output disc through the outer periphery spline, and is controllably connected to the output stage outer side sun gear through the teeth on the end surface. The clutch is sleeved on the outer periphery of the clutch control sleeve and can rotate relative to the clutch control sleeve. The clutch control sleeve is sleeved on the outer periphery of the fixed sleeve. The clutch control pin is fixedly connected with the clutch control sleeve, and the protruding end thereof passes through the semicircular slot hole of the fixed sleeve and cooperates with the control groove of the gear shift control sleeve. The rotation of the gear shift control sleeve can control the axial movement of the clutch control pin, thereby driving the axial movement of the clutch, so as to realize the combination and separation of the clutch. When the clutch is in the combined state, it shares the transmission torque with the gear ring, so the combined torque is small, and the gear shifting resistance is reduced.

Images