CN108068987B - Method for realizing stepless speed change of bicycle and stepless speed change structure - Google Patents
Method for realizing stepless speed change of bicycle and stepless speed change structure Download PDFInfo
- Publication number
- CN108068987B CN108068987B CN201611015676.3A CN201611015676A CN108068987B CN 108068987 B CN108068987 B CN 108068987B CN 201611015676 A CN201611015676 A CN 201611015676A CN 108068987 B CN108068987 B CN 108068987B
- Authority
- CN
- China
- Prior art keywords
- output
- speed
- rotor
- speed change
- taper rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
Abstract
The invention relates to a method for realizing bicycle stepless speed change and a stepless speed change structure, wherein a speed change body with a speed change bracket is arranged in a hub of a bicycle; an input taper rotor and an output taper rotor which can realize rotation are oppositely arranged on the variable speed bracket, and the input taper rotor and the output taper rotor are oppositely inverted, so that a parallel sliding track is formed by the conical surface of the input taper rotor and the conical surface of the output taper rotor; a sliding part which can simultaneously push and touch the conical surfaces of the input conical rotor and the output conical rotor is arranged on the sliding track so that the sliding part can slide on the sliding track; the input taper rotor is indirectly driven to rotate by the control of a speed regulator on the bicycle, and then the sliding part is driven to rotate on the sliding track; the sliding part is pressed against the output taper rotor to enable the output taper rotor to rotate; the output taper rotor indirectly drives the hub gear ring to rotate so as to realize stepless speed change of the bicycle by using the speed regulator.
Description
Technical Field
The invention relates to the field of bicycles, in particular to a method for realizing stepless speed change of a bicycle and a stepless speed change structure.
Background
With the increasing development of people's love degree in sports, bicycling has become an increasingly popular way of entertainment and transportation, and bicycling has become a very popular competitive sport for both amateurs and professional players.
Most of the existing bicycles are variable speed bicycles capable of realizing multi-stage speed change, namely, the variable speed bicycles allow riders to select proper gear ratios as required, namely, gears of different levels when the bicycles move, so as to meet various road conditions encountered in the riding process.
However, the present variable speed bicycles with different gears are still essentially step variable, i.e. can only choose to change between fixed gears. The rider can only change back and forth on the gears with limited series, but the actual requirement that the rider adjusts the gears to random series at will cannot be really met.
Disclosure of Invention
The invention aims to solve the primary technical problem of providing a method for realizing stepless speed change of a bicycle by allowing a rider to adjust the speed of the bicycle to any level of gears at will without adding flywheel blades in the prior art.
Another technical problem to be solved by the present invention is to provide a stepless speed change structure for a bicycle, which can satisfy the requirement of a rider to adjust the speed of the bicycle to any level of gears at will without adding flywheel pieces, so as to realize stepless speed change of the bicycle.
The technical scheme adopted by the invention for solving the above-mentioned primary technical problems is as follows: method for realizing a stepless speed change of a bicycle, for a bicycle with a speed regulator, characterized in that it comprises the following steps:
step 3, placing a sliding part which can simultaneously push and touch the conical surfaces of the input taper rotor and the output taper rotor on the formed sliding track so as to enable the sliding part to slide on the sliding track;
step 5, the sliding part is pushed against the output taper rotor to enable the output taper rotor to rotate;
and 6, indirectly driving a hub gear ring on the bicycle to rotate by the rotating output taper rotor so as to realize stepless speed change of the bicycle by using the speed regulator.
Optionally, the input taper rotors have at least three, the sliding members have at least three correspondingly, and the input taper rotors are arranged uniformly around the output taper rotors to apply symmetrical abutting force to the rotation of the output taper rotors through the sliding members.
The technical scheme adopted by the invention for solving the other technical problem is as follows: the stepless speed change structure is characterized by comprising a hub, a hub cover, a hub gear ring, a speed change body, an input disc, at least three input taper rotors, an output taper rotor and a main shaft, wherein the hub is used for connecting spokes; the hub is tightly matched with the hub cover;
the speed change body is provided with a first cavity with two open ends, at least three first supporting columns and at least three second supporting columns; the upper end surface of the speed change body is respectively provided with a first opening, a second opening and a third opening; correspondingly, a fourth hole opposite to the second hole and a fifth hole opposite to the third hole are formed in the lower end face of the speed change body; a main shaft penetrates through the first cavity;
one end of the first support column is fixed on the upper end face of the speed change body, and the other end of the first support column is fixed on the lower end face of the speed change body;
one end of the second support is fixed at a third opening on the upper end surface of the speed change body, the other end of the second support is fixed at a fifth opening on the speed change body, which is opposite to the third opening, and the second support is provided with a side surface slot with two ends respectively communicated with the third opening and the fifth opening;
the first supporting columns are uniformly distributed around the first cavity, and the second supporting columns are uniformly distributed around the first cavity;
the small end of the input taper rotor is movably limited and fixed at a second opening of the upper end surface of the speed change body, correspondingly, the large end of the input taper rotor is movably limited and fixed at a fourth opening of the lower end surface of the speed change body, the large end of the input taper rotor is connected with a rotor gear, and the rotor gear is clamped with the input disc;
the output taper rotor is provided with a third cavity with openings at two ends, and the small head end of the output taper rotor is positioned in the second cavity of the variable speed bracket;
the variable speed support is positioned in a first cavity of the variable speed body, the variable speed support is provided with a second cavity with two open ends, the side wall of the variable speed support is provided with a variable speed slot and at least three positioning holes which are uniformly distributed, and the positioning holes correspond to the side slots on the second support one by one; the variable-speed slot is provided with a slidable sliding component;
a speed regulating rod is arranged at the groove on the side surface, one end of the speed regulating rod is movably connected with a speed regulating screw, and the other end of the speed regulating rod is positioned in the corresponding positioning hole; one end of the speed regulating screw is provided with a gear;
the side wall of the sliding component respectively supports against the side wall of the input taper rotor and the side wall of the output taper rotor, so that the sliding component can move on a sliding track formed by the side wall of the input taper rotor, the side wall of the output taper rotor, the small head end of the input taper rotor, the large head end of the output taper rotor and the small head end of the output taper rotor;
one end of the speed regulating screw with a gear penetrates through the third opening on the upper end face of the speed changing body and is clamped with a speed regulating gear ring, and the other end of the speed regulating screw is fixed at the fifth opening on the lower end face of the speed changing body;
a rotatable output driving wheel is arranged at a first opening on the upper end surface of the speed changing body; a plane bearing is arranged between the lower end face of the speed changing body and the large head end of the input taper rotor so as to limit the input taper rotor;
the big head end of the output taper rotor is connected with an output disc capable of being clamped with an output driving wheel, the output disc is provided with a sixth opening, the output disc is rotatably connected with a speed regulating gear ring, the speed regulating gear ring is provided with a seventh opening opposite to the sixth opening, and the output driving wheel is clamped with the hub gear ring; the input disc is provided with an eighth open hole;
one end of the main shaft respectively penetrates through the first cavity, the second cavity, the third cavity, the sixth opening and the seventh opening so as to rotatably fix the speed change body, the speed change bracket, the output taper rotor, the output disc and the speed regulation gear ring on the main shaft; and the other end of the main shaft penetrates through the eighth opening and the hub cover, so that the main shaft can be connected with an external driving gear and realize stepless speed change under the control of the bicycle speed regulator.
In order to ensure that the bicycle can be always attached to the input taper rotor, the sliding part and the output taper rotor when in a non-riding state and provide initial adhesive force for bicycle starting, so that the output taper rotor and the output disc are ensured not to slip when the bicycle is started, an improvement is that a pre-tightening spring is arranged between the output taper rotor and the output disc so that the bicycle can be always attached to the input taper rotor, the sliding part and the output taper rotor when in the non-riding state.
In order to realize stable transmission of power between the output taper rotor and the output disc, as an improvement, a first spiral groove for placing a first rolling ball is arranged on the big end of the output taper rotor, and a second spiral groove matched with the first spiral groove is arranged on the first end surface of the output disc, so that the output taper rotor in a rotating state generates an axial component force mutually separated from the output disc.
In order to ensure that the speed regulation gear ring and the output disc rotate independently and the speed regulation gear ring and the output disc do not influence each other to rotate, as an improvement, a third groove with a second rolling ball is arranged on the second end face of the output disc, a fourth groove matched with the third groove is arranged on the speed regulation gear ring, and the second rolling ball is positioned between the third groove and the fourth groove, so that the speed regulation gear ring and the output disc can rotate independently through the second rolling ball without influencing each other to rotate.
In an improved mode, the speed regulating screw is located on the outer side of the side groove of the second support column, and the speed regulating screw is rotatably limited in the third opening and the fifth opening.
In another improvement, the shift groove of the shift bracket has a transverse groove and a longitudinal groove intersecting the transverse groove, and a gap is left between the transverse groove and the sliding member, so that the sliding member slides in the longitudinal groove while the longitudinal groove defines the parallel relationship between the sliding member and the shift bracket. The sliding component can stably slide on the conical surfaces of the input taper rotor and the output taper rotor through the arrangement of the longitudinal grooves and the transverse grooves, so that the effects of stability and stepless speed change are further achieved.
In order to further guarantee the effectiveness of the speed regulation screw when adjusting the sliding component, the improvement is that one end of the speed regulation rod is provided with a threaded hole with internal threads, the other end of the speed regulation rod is positioned in a positioning hole of the speed change support, the speed regulation screw is provided with external threads, one end of the speed regulation screw penetrates through the threaded hole and then is positioned in a fifth opening hole, and the speed regulation screw and the speed regulation rod are movably connected through the internal threads of the threaded hole and the external threads of the speed regulation screw.
Compared with the prior art, the invention has the advantages that:
firstly, in the method for realizing the stepless speed change of the bicycle, a speed change body is arranged in a hub, an input taper rotor and an output taper rotor which can realize rotation are oppositely arranged in a speed change bracket of the speed change body, and the input taper rotor and the output taper rotor are oppositely inverted, so that a conical surface of the input taper rotor and a conical surface of the output taper rotor form a parallel sliding track, and a sliding part arranged on the sliding track can simultaneously contact the conical surface of the input taper rotor and the conical surface of the output taper rotor; because the input taper rotor and the output taper rotor are both in a cone shape and are arranged in an inverted manner, the sliding component moves to different positions along the conical surfaces of the input taper rotor and the output taper rotor under the adjustment of the speed regulator, and the stepless change of the gear ratio can be realized, so that a rider can independently select a proper gear ratio to ride the bicycle, and the stepless speed change of the bicycle is realized;
secondly, in the stepless speed change structure for realizing the stepless speed change of the bicycle, the output taper rotor, the input taper rotor and the sliding component are attached under the action of the pre-tightening spring, so that the adhesion pressure is low, the effect of a clutch is formed, and the stepless speed change can be realized when the bicycle is static or the bicycle is moving but not in a pedal state;
the stepless speed change structure adopts a built-in structure, and a sealed shell is formed by matching the closed hub and the hub cover from the outside, so that silt in the riding process can be prevented from entering, the riding process is safer and smoother, and the service life of the stepless speed change structure is prolonged;
in addition, compared with the traditional speed changer, the stepless speed change structure of the invention adopts the sliding part to change the gear ratio in the moving mode of the input taper rotor conical surface and the output taper rotor conical surface, so that the speed change process of the bicycle is smoother and smoother without pause feeling during gear shifting, metal impact sound generated during gear shifting does not exist, and the conditions of gear shifting delay or power transmission interruption do not occur;
the size of the smallest flywheel sheet is also restricted due to the restriction of the sizes of the chain and the gear bayonet, namely the maximum value of the speed ratio is restricted; in the stepless speed change structure, the ratio of the minimum end to the maximum end of the input taper rotor and the output taper rotor can be larger, and in the speed change process, the synchronous change of the input taper rotor and the output taper rotor can be realized, so that the operation of a rider is simpler, the speed change process is faster, and the actual speed change requirement of the rider at any time is met;
thirdly, a pre-tightening spring is arranged between the output taper rotor and the output disc so that the input taper rotor, the sliding part and the output taper rotor can be always attached when the bicycle is in a non-riding state, and initial adhesive force is provided for starting the bicycle, so that the output taper rotor and the output disc are ensured not to slip when the bicycle is started; therefore, no matter the difference of the weight and the force of the rider, the stepless speed change structure can self-adaptively adjust the pressure, so that the friction force is enough to drive the bicycle to move forwards without slipping;
finally, the traditional transmission needs to be operated by matching front and back fingers, the left hand and the right hand of a rider need to use the transmission, and the gear ratio range of the flywheel piece for speed change is not large enough, so that the requirement of the riding process on gear ratio adjustment cannot be met.
Drawings
FIG. 1 is a schematic flow chart illustrating a method for continuously variable transmission of a bicycle according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a stepless speed change structure for realizing stepless speed change of a bicycle according to a second embodiment of the present invention;
FIG. 3 is a left side view of the continuously variable transmission structure shown in FIG. 2;
FIG. 4 is a right side view of the continuously variable transmission structure shown in FIG. 2;
FIG. 5 is an exploded schematic view of the continuously variable transmission structure shown in FIG. 2;
FIG. 6 is a schematic structural view of a hub in the continuously variable transmission configuration of FIG. 2;
FIG. 7 is a schematic bottom view of the hub of FIG. 6;
FIG. 8 is a schematic structural view of a hub cover in the continuously variable transmission configuration of FIG. 2;
FIG. 9 is a schematic structural view of the transmission body in the continuously variable shifting structure shown in FIG. 2;
FIG. 10 is a schematic structural view of an output disc in the continuously variable transmission structure of FIG. 2;
FIG. 11 is a schematic structural view of an input taper rotor in the continuously variable transmission configuration of FIG. 2;
FIG. 12 is a schematic structural view of an output tapered rotor in the continuously variable transmission configuration of FIG. 2;
FIG. 13 is a schematic structural view of a shift bracket in the continuously variable shifting structure of FIG. 2;
FIG. 14 is a schematic structural view of the sliding members in the continuously variable shifting structure of FIG. 2;
FIG. 15 is a schematic view of the slide member mounted to the shift bracket;
FIG. 16 is a schematic structural view of a rotor gear in the continuously variable transmission configuration of FIG. 2;
FIG. 17 is a schematic structural view of a shift lever in the continuously variable shifting structure of FIG. 2;
FIG. 18 is a schematic view of the output transmission wheel in the continuously variable transmission configuration of FIG. 2;
FIG. 19 is a schematic structural view of an output disc in the continuously variable shifting structure of FIG. 2;
FIG. 20 is a bottom view of the output tray of FIG. 19;
FIG. 21 is a schematic structural view of a speed adjusting ring gear in the continuously variable shifting structure shown in FIG. 2;
FIG. 22 is a schematic bottom view of the speed ring gear of FIG. 21;
FIG. 23 is a schematic structural view of a hub ring gear in the continuously variable transmission structure shown in FIG. 2;
fig. 24 is a schematic structural view of a snap spring in the stepless speed change structure shown in fig. 2;
FIG. 25 is a schematic diagram of the pre-load spring in the continuously variable transmission configuration of FIG. 2;
FIG. 26 is a schematic structural view of a flat bearing in the continuously variable transmission configuration of FIG. 2;
fig. 27 is a schematic view showing a state in which the continuously variable transmission structure shown in fig. 2 is mounted with a drive gear and a brake disk, respectively.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example one
As shown in fig. 1, the method for realizing stepless speed change of a bicycle in the first embodiment is used for a bicycle with a speed regulator, and comprises the following steps:
step 3, placing a sliding part which can simultaneously push and touch the conical surfaces of the input taper rotor and the output taper rotor on the formed sliding track so as to enable the sliding part to slide on the sliding track;
step 5, the sliding part is pushed against the output taper rotor to enable the output taper rotor to rotate;
and 6, indirectly driving a hub gear ring on the bicycle to rotate by the rotating output taper rotor so as to realize stepless speed change of the bicycle by using the speed regulator.
In the method for realizing the stepless speed change of the bicycle, the number of the input conical rotors is at least three, the number of the sliding parts is at least three correspondingly, and the input conical rotors are uniformly distributed around the output conical rotors so as to apply symmetrical abutting force to the rotation of the output conical rotors through the sliding parts.
In the method for realizing the stepless speed change of the bicycle provided by the embodiment one, a speed change body is installed in a hub, an input taper rotor and an output taper rotor which can realize rotation are oppositely arranged in a speed change bracket of the speed change body, the input taper rotor and the output taper rotor are oppositely inverted, so that a conical surface of the input taper rotor and a conical surface of the output taper rotor form a parallel sliding track, and a sliding part arranged on the sliding track can simultaneously contact the conical surface of the input taper rotor and the conical surface of the output taper rotor; because the input taper rotor and the output taper rotor are both in a cone shape and are arranged in an inverted manner, the sliding component moves to different positions along the conical surfaces of the input taper rotor and the output taper rotor under the adjustment of the speed regulator, and the stepless change of the gear ratio can be realized, so that a rider can independently select a proper gear ratio to ride, and the stepless speed change of the bicycle is realized.
Example two
As shown in fig. 2 to 27, in the second embodiment, the stepless speed change structure for realizing stepless speed change of a bicycle comprises a hub 1 for connecting spokes, a hub cover 2, a hub gear ring 3, a speed change body 4, an input disc 5, at least three input taper rotors 6, one output taper rotor 7 and a main shaft 8; the hub 1 is tightly matched with the hub cover 2; the hub 1 and the hub cover 2 which are tightly matched form a sealing shell, so that the speed change body 4 is sealed and supported, silt in the riding process can be prevented from entering, the riding process is safer and smoother, and the service life of the stepless speed change structure is prolonged; wherein:
the transmission body 4 has a first cavity 40 with two open ends, at least three first pillars 41 and at least three second pillars 42; the first struts 41 and the second struts 42 together function as a support and weight reduction; the upper end surface of the transmission body 4 is respectively provided with a first opening 401, a second opening 402 and a third opening 403; correspondingly, the lower end surface of the transmission body 4 is provided with a fourth opening 404 facing the second opening 402 and a fifth opening 405 facing the third opening 403; a main shaft 8 penetrates through the first cavity 40;
one end of the first support column 41 is fixed to the upper end surface of the transmission body 4, and the other end of the first support column 41 is fixed to the lower end surface of the transmission body 4;
one end of the second pillar 42 is fixed at the third opening 403 on the upper end surface of the transmission body, the other end of the second pillar 42 is fixed at the fifth opening 405 on the transmission body, which is opposite to the third opening 403, and the second pillar 42 has a side slot 420 with two ends respectively communicated with the third opening 403 and the fifth opening 405;
the first support columns 41 are uniformly distributed around the first cavity 40, and the second support columns 42 are uniformly distributed around the first cavity 40; for example, when the number of the first struts 41 is three, an included angle between the first struts 41 forms 120 degrees, so that the three first struts are uniformly arranged around the first cavity 40; similarly, the second pillars 42 may be uniformly arranged around the first cavity 40 with reference to the arrangement of the first pillars 41;
the small end 61 of the input taper rotor 6 is movably limited and fixed at the second opening 402 of the upper end surface of the speed change body, correspondingly, the large end 62 of the input taper rotor 6 is movably limited and fixed at the fourth opening 404 of the lower end surface of the speed change body, the large end 62 of the input taper rotor 6 is connected with the rotor gear 10, and the rotor gear 10 is clamped with the input disc 5; because the small head end 61 and the large head end 62 of the input taper rotor 6 are movably limited in the corresponding openings, the input taper rotor 6 can move up and down, but can not shake left and right; when the input disc 5 rotates, the clamped rotor gear 10 can drive the input taper rotor 6 to rotate;
the output taper rotor 7 is provided with a third cavity 70 with two open ends, and the small end 71 of the output taper rotor 7 is positioned in the second cavity 90 of the variable speed bracket 9; the input taper rotor 6 and the output taper rotor 7 are inverted relatively, so that the conical surface of the input taper rotor 6 and the conical surface of the output taper rotor 7 form parallel sliding tracks;
the speed changing bracket 9 is positioned in the first cavity 40 of the speed changing body 4, the speed changing bracket 9 is provided with a second cavity 90 with two open ends, the side wall of the speed changing bracket 9 is provided with a speed changing slot 91 and at least three positioning holes 92 which are uniformly distributed, and each positioning hole 92 corresponds to the side slot 420 on the second support 42 one by one; the shift groove 91 has a slidable slide member 12. The distance between each input taper rotor 6 and the main shaft 8 is consistent, so that the angles of each input taper rotor 6 and each output taper rotor 7 are consistent; the corresponding edges of each of the input tapered rotors 6 and the output tapered rotors 7 are parallel to each other, thereby providing conditions for smooth sliding of the sliding member 12 on both the input tapered rotor conical surface and the output tapered rotor conical surface. The surface of the sliding part 12 is preferably arc-shaped, and is tangent to the input taper rotor 6 and the output taper rotor 7, after two ends of the sliding part 12 are respectively provided with a bearing, two ends of the sliding part form a plane, the two planes are parallel to two end surfaces of the variable speed bracket 9 for loading the sliding part 12, and a certain gap is left, so that the sliding part 12 can smoothly slide in the variable speed bracket 9 in the variable speed process, and the effect of limiting the parallel position of the sliding part 12 and the variable speed bracket 9 to be unchanged is achieved, namely the sliding part 12 cannot turn over in the variable speed bracket 9;
a speed adjusting rod 11 is arranged at the position of the side surface slot 420, one end of the speed adjusting rod 11 is movably connected with a speed adjusting screw 13, and the other end of the speed adjusting rod 11 is positioned in the corresponding positioning hole 92; one end of the speed regulating screw 13 is provided with a gear 130;
the side wall 120 of the sliding component 12 respectively contacts the side wall of the input taper rotor 6 and the side wall of the output taper rotor 7, so that the sliding component 12 can move on a sliding track formed by the side wall of the input taper rotor, the side wall of the output taper rotor, the small head end of the input taper rotor, the large head end of the output taper rotor and the small head end of the output taper rotor; the sliding part 12 moves to different positions along the conical surfaces of the input conical rotor 6 and the output conical rotor 7, so that the stepless change of the gear ratio can be realized, and a rider can independently select a proper gear ratio to ride the bicycle, so that the stepless speed change of the bicycle is realized;
one end of the speed regulation screw 13, which is provided with the gear 130, penetrates through the third opening 403 on the upper end surface of the speed change body and is clamped with the speed regulation gear ring 16, and the other end of the speed regulation screw 13 is fixed at the fifth opening 405 on the lower end surface of the speed change body; one end of the speed regulation screw 13 fixed at the fifth opening 405 can be fixed by a snap spring, so that the speed regulation screw can rotate but cannot move;
a rotatable output driving wheel 14 is arranged at a first opening 401 on the upper end surface of the speed changing body 4; a plane bearing 23 is arranged between the lower end surface of the speed changing body 4 and the big end 62 of the input taper rotor 6 so as to limit the input taper rotor 6;
the big head end 72 of the output taper rotor 7 is connected with an output disc 15 which can be clamped with an output driving wheel 14, the output disc 15 is provided with a sixth open hole 150, the output disc 15 is rotatably connected with a speed regulating gear ring 16, the speed regulating gear ring 16 is provided with a seventh open hole 160 which is over against the sixth open hole 150, and the output driving wheel 14 is clamped with the hub gear ring 3; the input disc 5 has an eighth opening 50;
one end of the main shaft 8 passes through the first cavity 40, the second cavity 90, the third cavity 70, the sixth open hole 150 and the seventh open hole 160 respectively, so that the speed change body 4, the speed change bracket 9, the output taper rotor 7, the output disc 15 and the speed regulation gear ring 16 are rotatably fixed on the main shaft 8; the other end of the main shaft 8 passes through the eighth opening 50 and the hub cover 2, so that the main shaft 8 can be connected with an external driving gear 17 and realize stepless speed change under the control of the bicycle speed regulator. The speed regulator of the bicycle is usually arranged on the position of a handlebar of the bicycle, the speed regulator is connected with the speed regulating gear ring 16 of the stepless speed change structure in the second embodiment, and the speed of the bicycle can be conveniently regulated by a rider at any time by hand in the riding process through regulating the speed regulator.
In order to ensure that the input taper rotor 6, the sliding part 12 and the output taper rotor 7 can be always attached to each other when the bicycle is in a non-riding state and provide initial adhesion for bicycle starting, so that the output taper rotor 7 and the output disc 15 are ensured not to slip during bicycle starting, a pre-tightening spring 18 is improved to be arranged between the output taper rotor 7 and the output disc 15, and the input taper rotor 6, the sliding part 12 and the output taper rotor 7 can be always attached to each other when the bicycle is in a non-riding state.
In order to realize stable transmission of power between the output taper rotor 7 and the output disc 15, as an improvement, the big head end 72 of the output taper rotor 7 is provided with a first spiral groove 720 for placing the first rolling ball 19, and the first end surface of the output disc 15 is provided with a second spiral groove 151 matched with the first spiral groove 720, so that the output taper rotor 7 generates axial component force separated from the output disc 15 when in a rotating state.
In order to ensure that the speed regulation gear ring 16 and the output disc 15 rotate independently without mutual influence on rotation, the second end face of the output disc 15 is provided with a third groove 151 for placing the second rolling balls 22, the speed regulation gear ring 16 is provided with a fourth groove 161 matched with the third groove 151, and the second rolling balls 22 are positioned between the third groove 151 and the fourth groove 161, so that the speed regulation gear ring 16 and the output disc 15 can rotate independently without mutual influence on rotation through the second rolling balls 22.
In order to ensure the effectiveness of the speed adjusting screw 13 in adjusting the sliding member 12, it is improved that the speed adjusting screw 13 is located outside the side groove 420 of the second pillar 42, and the speed adjusting screw 13 is rotatably retained in the third opening 403 and the fifth opening 405.
In a further improvement, the shift notch 91 of the shift bracket 9 has a transverse slot 911 and a longitudinal slot 912 intersecting the transverse slot 911, and a gap is left between the transverse slot 911 and the sliding member 12, so that the sliding member 12 slides in the longitudinal slot 912 while the longitudinal slot 912 defines the parallel relationship between the sliding member 12 and the shift bracket 9. The arrangement of the longitudinal grooves 912 and the transverse grooves 911 enables the sliding component 12 to stably slide on each of the input taper rotor conical surface and the output taper rotor conical surface, so as to further achieve the effect of stable and stepless speed change.
In order to further ensure the effectiveness of the speed regulation screw 13 in adjusting the sliding component, it is improved that one end of the speed regulation rod 11 is provided with a threaded hole 110 having an internal thread, the other end of the speed regulation rod 11 is located in the positioning hole 92 of the speed change bracket 9, the speed regulation screw 13 has an external thread, one end of the speed regulation screw 13 passes through the threaded hole 110 and then is located in the fifth opening 405, and the speed regulation screw 13 and the speed regulation rod 11 are movably connected through the internal thread of the threaded hole 110 and the external thread of the speed regulation screw 13.
The following describes the operating principle of the stepless speed change structure for realizing stepless speed change of the bicycle in the embodiment of the present invention with reference to fig. 2 to 27 as follows:
when a rider needs to change the speed of the bicycle, the rider pushes the speed regulator on the bicycle, then the speed regulator further drives the speed regulating gear ring 16 to rotate, the rotating speed regulating gear ring 16 drives the speed regulating screw 13 to rotate in the threaded hole 110 of the speed regulating rod 11, and the rotating speed regulating screw 13 drives the speed regulating rod 11 to move up and down, so that the speed regulating rod 11 further pushes the speed changing support 9 and the speed changing support 9 moves up and down in a space formed between the input taper rotor 6 and the output taper rotor 7; because the input taper rotor 6 and the output taper rotor 7 are arranged in an inverted manner and the conical surfaces of the input taper rotor 6 and the output taper rotor 7 are parallel, the sliding part 12 can realize continuous change of the gear ratio when moving back and forth on the conical surfaces of the input taper rotor 6 and the output taper rotor 7, the numerical value of the gear ratio is continuous rather than discrete, and the effect of realizing stepless speed change on the bicycle is further achieved;
after a driving gear 17 on a bicycle is driven to rotate by a chain wheel, the driving gear 17 drives an input disc 5 to rotate, after the rotating input disc 5 is clamped by a rotor gear 10, the rotor gear 10 drives an input taper rotor 6 to rotate, and the rotating input taper rotor 6 generates friction force to transmit through a sliding part 12, so that an output taper rotor 7 is driven to rotate; because the output taper rotor 7 generates axial component force when rotating, when the output taper rotor 7 drives the output disc 15 to rotate, the input taper rotor 6, the output taper rotor 7 and the sliding part 12 can be transmitted through friction force without slipping, the rotating output disc 15 drives the output transmission wheel 14 to rotate, the rotating output transmission wheel 14 drives the hub gear ring 3 to rotate, the rotating hub gear ring 3 drives the hub 1 to rotate, the rotating hub 1 drives the spokes fixedly connected with the hub to rotate, and the spokes are fixedly connected to the rim of the bicycle, so that the rotating spokes can drive the rim to rotate, and further the forward movement of the bicycle is realized.
Claims (9)
1. The stepless speed change structure for realizing stepless speed change of the bicycle is characterized by comprising a hub (1) for connecting spokes, a hub cover (2), a hub gear ring (3), a speed change body (4), an input disc (5), at least three input taper rotors (6), an output taper rotor (7) and a main shaft (8); the hub (1) is tightly matched with the hub cover (2);
the speed change body (4) is provided with a first cavity (40) with two open ends, at least three first supports (41) and at least three second supports (42); the upper end surface of the speed change body (4) is respectively provided with a first opening (401), a second opening (402) and a third opening (403); correspondingly, a fourth opening (404) opposite to the second opening (402) and a fifth opening (405) opposite to the third opening (403) are formed in the lower end face of the speed change body (4); a main shaft (8) penetrates through the first cavity (40);
one end of the first support column (41) is fixed on the upper end face of the speed changing body (4), and the other end of the first support column (41) is fixed on the lower end face of the speed changing body (4);
one end of the second support column (42) is fixed at a third opening (403) on the upper end surface of the speed change body, the other end of the second support column (42) is fixed at a fifth opening (405) on the speed change body, which is opposite to the third opening (403), and the second support column (42) is provided with a side surface slot (420) of which two ends are respectively and correspondingly communicated with the third opening (403) and the fifth opening (405);
the first support columns (41) are uniformly distributed around the first cavity (40), and the second support columns (42) are uniformly distributed around the first cavity (40);
the small end (61) of the input taper rotor (6) is movably limited and fixed at a second opening (402) of the upper end surface of the speed change body, correspondingly, the large end (62) of the input taper rotor (6) is movably limited and fixed at a fourth opening (404) of the lower end surface of the speed change body, the large end (62) of the input taper rotor (6) is connected with a rotor gear (10), and the rotor gear (10) is clamped with the input disc (5);
the output taper rotor (7) is provided with a third cavity (70) with two open ends, and the small head end (71) of the output taper rotor (7) is positioned in the second cavity (90) of the variable speed bracket (9);
the speed change support (9) is positioned in a first cavity (40) of the speed change body (4), the speed change support (9) is provided with a second cavity (90) with two open ends, the side wall of the speed change support (9) is provided with a speed change slot (91) and at least three positioning holes (92) which are uniformly distributed, and each positioning hole (92) corresponds to a side slot (420) on the second strut (42) one by one; the variable-speed groove (91) is provided with a slidable sliding part (12);
a speed regulating rod (11) is arranged at the position of the side surface slot (420), one end of the speed regulating rod (11) is movably connected with a speed regulating screw (13), and the other end of the speed regulating rod (11) is positioned in the corresponding positioning hole (92); one end of the speed regulating screw (13) is provided with a gear (130);
the side wall (120) of the sliding component (12) is respectively abutted against the side wall of the input taper rotor (6) and the side wall of the output taper rotor (7) so that the sliding component (12) can move on a sliding track formed by limiting the side wall of the input taper rotor, the side wall of the output taper rotor, the small end of the input taper rotor, the large end of the output taper rotor and the small end of the output taper rotor;
one end of the speed regulation screw (13) with the gear (130) penetrates through a third opening (403) on the upper end face of the speed change body and is clamped with a speed regulation gear ring (16), and the other end of the speed regulation screw (13) is fixed at a fifth opening (405) on the lower end face of the speed change body;
a rotatable output driving wheel (14) is arranged at a first opening (401) on the upper end surface of the speed changing body (4); a plane bearing (23) is arranged between the lower end face of the speed change body (4) and the big end (62) of the input taper rotor (6) so as to limit the input taper rotor (6);
the large end (72) of the output taper rotor (7) is connected with an output disc (15) capable of being clamped with an output driving wheel (14), a sixth open hole (150) is formed in the output disc (15), the output disc (15) is rotatably connected with a speed regulating gear ring (16), the speed regulating gear ring (16) is provided with a seventh open hole (160) opposite to the sixth open hole (150), and the output driving wheel (14) is clamped with the hub gear ring (3); the input disc (5) has an eighth aperture (50);
one end of the main shaft (8) respectively penetrates through the first cavity (40), the second cavity (90), the third cavity (70), the sixth opening (150) and the seventh opening (160) so as to rotatably fix the speed change body (4), the speed change bracket (9), the output taper rotor (7), the output disc (15) and the speed regulation gear ring (16) on the main shaft (8); the other end of the main shaft (8) penetrates through the eighth opening (50) and the hub cover (2) so that the main shaft (8) can be connected with an external driving gear (17) and realize stepless speed change under the control of the bicycle speed regulator.
2. The continuously variable transmission arrangement according to claim 1, wherein a pre-tensioned spring (18) is mounted between the output tapered rotor (7) and the output disc (15) to enable constant abutment between the input tapered rotor (6), the sliding member (12) and the output tapered rotor (7) when the bicycle is in a non-riding state.
3. The continuously variable transmission structure according to claim 1, wherein the large head end (72) of the output tapered rotor (7) has a first spiral groove (720) for receiving the first rolling ball (19), and the first end surface of the output disc (15) has a second spiral groove (151) for engaging with the first spiral groove (720), so that the output tapered rotor (7) generates an axial force component separated from the output disc (15) in a rotating state.
4. The continuously variable transmission structure according to claim 3, wherein the second end face of the output disc (15) has a third groove (151) on which the second ball (22) is placed, the speed-adjusting ring gear (16) has a fourth groove (161) matching the third groove (151), and the second ball (22) is located between the third groove (151) and the fourth groove (161) so that the speed-adjusting ring gear (16) and the output disc (15) are rotated independently without affecting rotation of each other by the second ball (22).
5. The continuously variable transmission arrangement according to claim 1, wherein the speed adjustment screw (13) is located outside the lateral slot (420) of the second strut (42), the speed adjustment screw (13) being rotatably retained in the third aperture (403) and the fifth aperture (405).
6. The continuously variable transmission structure according to claim 1, wherein the shift notch (91) of the shift bracket (9) has a transverse groove (911) and a longitudinal groove (912) intersecting the transverse groove (911), and a gap is left between the transverse groove (911) and the sliding member (12) so that the sliding member (12) slides in the longitudinal groove (912) while the longitudinal groove (912) defines a parallel relationship between the sliding member (12) and the shift bracket (9).
7. The stepless speed change structure according to claim 1, wherein one end of the speed regulation rod (11) is provided with a threaded hole (110) with internal threads, the other end of the speed regulation rod (11) is positioned in the positioning hole (92) of the speed change support (9), the speed regulation screw (13) is provided with external threads, one end of the speed regulation screw (13) penetrates through the threaded hole (110) and then is positioned in the fifth opening (405), and the speed regulation screw (13) and the speed regulation rod (11) are movably connected through the internal threads of the threaded hole (110) and the external threads of the speed regulation screw (13).
8. A method for realizing stepless speed change of a bicycle is applied to the stepless speed change structure as claimed in any one of claims 1 to 7, and is characterized by comprising the following steps:
step 1, installing a speed change body with a speed change bracket in a hub of a bicycle;
step 2, an input taper rotor and an output taper rotor which can realize rotation are oppositely arranged on the variable speed support, and the input taper rotor and the output taper rotor are oppositely inverted, so that a parallel sliding track is formed by the conical surface of the input taper rotor and the conical surface of the output taper rotor; the input taper rotor and the output taper rotor are both in a cone shape with a small head end and a large head end;
step 3, placing a sliding part which can simultaneously push and touch the conical surfaces of the input taper rotor and the output taper rotor on the formed sliding track so as to enable the sliding part to slide on the sliding track;
step 4, the input taper rotor is indirectly rotated through the control of the speed regulator, and then the sliding part is driven to rotate on the sliding track;
step 5, the sliding part is pushed against the output taper rotor to enable the output taper rotor to rotate;
and 6, indirectly driving a hub gear ring on the bicycle to rotate by the rotating output taper rotor so as to realize stepless speed change of the bicycle by using the speed regulator.
9. The method of claim 8, wherein the input tapered rotors have at least three and the sliding members have at least three corresponding, and wherein the input tapered rotors are uniformly disposed around the output tapered rotors to apply a symmetrical counter force to the rotation of the output tapered rotors through the sliding members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015676.3A CN108068987B (en) | 2016-11-18 | 2016-11-18 | Method for realizing stepless speed change of bicycle and stepless speed change structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015676.3A CN108068987B (en) | 2016-11-18 | 2016-11-18 | Method for realizing stepless speed change of bicycle and stepless speed change structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108068987A CN108068987A (en) | 2018-05-25 |
| CN108068987B true CN108068987B (en) | 2020-10-16 |
Family
ID=62160286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611015676.3A Active CN108068987B (en) | 2016-11-18 | 2016-11-18 | Method for realizing stepless speed change of bicycle and stepless speed change structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108068987B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103879508A (en) * | 2012-12-21 | 2014-06-25 | 株式会社岛野 | Continuously variable bicycle transmission mechanism and bicycle hub |
| CN104943813A (en) * | 2014-03-26 | 2015-09-30 | 株式会社岛野 | Annular continuously variable transmission and bicycle built-in speed variable hub using same |
| CN105465305A (en) * | 2014-09-30 | 2016-04-06 | 日本电产新宝株式会社 | Friction-type stepless transmission |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6551210B2 (en) * | 2000-10-24 | 2003-04-22 | Motion Technologies, Llc. | Continuously variable transmission |
-
2016
- 2016-11-18 CN CN201611015676.3A patent/CN108068987B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103879508A (en) * | 2012-12-21 | 2014-06-25 | 株式会社岛野 | Continuously variable bicycle transmission mechanism and bicycle hub |
| CN104943813A (en) * | 2014-03-26 | 2015-09-30 | 株式会社岛野 | Annular continuously variable transmission and bicycle built-in speed variable hub using same |
| CN105465305A (en) * | 2014-09-30 | 2016-04-06 | 日本电产新宝株式会社 | Friction-type stepless transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108068987A (en) | 2018-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7137475B2 (en) | Continuously variable transmission, system and method | |
| US5295916A (en) | Automatic transmission for multispeed bicycle | |
| US11383783B2 (en) | Bicycle control device and system | |
| AU2016369409B2 (en) | Continuously variable transmission for a bicycle | |
| US20070213150A1 (en) | Automatic transmission for multi-speed bicycle | |
| US20120225749A1 (en) | Accelerating system for improving the running speed of a bicycle | |
| CN108068987B (en) | Method for realizing stepless speed change of bicycle and stepless speed change structure | |
| US4089231A (en) | Multistage freewheel for bicycles | |
| US9841088B2 (en) | Continuously variable transmission | |
| WO2023197589A1 (en) | Automatic internal transmission and bicycle | |
| US10800486B2 (en) | Damping transmission device | |
| US8900087B2 (en) | Multi-speed inline automatic bicycle transmission | |
| CN108068988A (en) | Realize the stepless speed change device of bicycle variable speed | |
| CN207565778U (en) | A kind of centre wheel inputs two shift transmissions | |
| CN218141973U (en) | Automatic inner speed changer and bicycle | |
| TW201350382A (en) | Automatic variable speed bicycle | |
| CN217374813U (en) | Automatic inner speed changer and bicycle | |
| CN217440702U (en) | Transmission assembly of inner speed changer control mechanism and automatic inner speed changer | |
| CN101274659A (en) | Centre shaft stepless automatic speed transmission | |
| EP3333455A1 (en) | Damping transmission device | |
| KR102060889B1 (en) | Helical Bike Transmissions and Transmission Control Methods | |
| CN110871872A (en) | Stepless speed change device for realizing stepless speed change of bicycle | |
| CN217374814U (en) | Automatic inner speed changer and bicycle | |
| CN218085904U (en) | Automatic speed variator for bicycle | |
| CN209126915U (en) | Realize the stepless speed change device of bicycle variable speed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221021 Address after: 315033 Building 2, No. 100, Lane 311, Kaiyuan Road, Jiangbei District, Ningbo, Zhejiang Patentee after: Ningbo Jiangbei Mingda Industrial Design Co.,Ltd. Address before: No. 575, Dongchang Road, Jiangbei District, Ningbo, Zhejiang 315012 Patentee before: Yang Mingfang Patentee before: Ye Xiaozhou Patentee before: Yu Gaolang |