CN114810860A - FCT magnetic coupling, flower-drum, wheel hub subassembly and bicycle - Google Patents
FCT magnetic coupling, flower-drum, wheel hub subassembly and bicycle Download PDFInfo
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- CN114810860A CN114810860A CN202210563672.8A CN202210563672A CN114810860A CN 114810860 A CN114810860 A CN 114810860A CN 202210563672 A CN202210563672 A CN 202210563672A CN 114810860 A CN114810860 A CN 114810860A
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- 230000008878 coupling Effects 0.000 title claims abstract description 81
- 238000010168 coupling process Methods 0.000 title claims abstract description 81
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 81
- 230000005540 biological transmission Effects 0.000 claims abstract description 101
- 230000033001 locomotion Effects 0.000 claims abstract description 10
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000003993 interaction Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D47/00—Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the preceding guide headings
- F16D47/02—Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the preceding guide headings of which at least one is a coupling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/02—Hubs adapted to be rotatably arranged on axle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/04—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow radial displacement, e.g. Oldham couplings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/24—Freewheels or freewheel clutches specially adapted for cycles
- F16D41/30—Freewheels or freewheel clutches specially adapted for cycles with hinged pawl co-operating with teeth, cogs, or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D47/00—Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the preceding guide headings
- F16D47/04—Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the preceding guide headings of which at least one is a freewheel
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses an FCT magnetic coupling, a hub assembly and a bicycle. The FCT magnetic coupling is used for forming clearance fit with the inner wall of a hub and can generate relative motion, the FCT magnetic coupling comprises a ring body, the inner circumference of the ring body comprises a plurality of ratchets, the outer circumference of the ring body is provided with a plurality of first interference transmission structures, the FCT magnetic coupling is matched with a ratchet wheel assembly of a tower footing through the ratchets, and transmission is achieved through clearance fit of the first interference transmission structures and a second interference transmission structure of the hub. According to the invention, the traditional coupler fixed by threads is changed into a clearance fit combined transmission structure, and the FCT magnetic coupler dynamically fine-tunes the central position according to the engagement condition of the jack pieces of the ratchet wheel assembly during working to enable the transmission centers of the inner teeth and the jack pieces and the transmission centers of the outer teeth and the hub to be concentric, so that the limitation that threads cannot be concentric during manufacturing is overcome, abnormal sound is eliminated, and the use experience is improved.
Description
Technical Field
The invention relates to the technical field of vehicle accessories, in particular to an FCT magnetic coupling, a hub assembly and a bicycle.
Background
With the improvement of living standard, various riding equipment such as electric bicycles for riding instead of walking and mountain bicycle body-building are more and more popularized. How to provide a riding device with higher transmission efficiency and better use experience becomes the focus of attention of many designers.
Referring to fig. 1, a structure of a hub in the prior art is shown, wherein a thread 202 is provided on an outer circumference of a coupler 200, a corresponding thread 102 is provided on an inner wall of a hub shell 100, and the coupler 200 and the hub shell 100 are screwed together by the thread. In the hub assembly, the tower footing and the hub are driven through the ratchet assembly, the jack pieces arranged on the ratchet assembly are generally three, and three jack pieces are required to be meshed with the ratchets of the coupler for driving at the same time, but the fixed center of the thread 202 and the meshing center of the jack pieces are difficult to be completely concentric due to process limitations. Because the hub has the problem of being incapable of being completely concentric, the jack pieces on the tower base are meshed with the ratchet ring easily to cause the phenomenon of asynchronous meshing, for example, one or two existing jack pieces are meshed in place, and the other two or one jack piece are not meshed in place completely, so that bang is produced at the moment of starting after cruising and stopping feet, and the riding experience is influenced.
Therefore, there is a need for improvement in the art.
Disclosure of Invention
Based on the above, in order to solve the technical problems in the prior art, the invention provides an FCT magnetic coupling, a hub assembly and a bicycle, wherein the space position of the FCT magnetic coupling is finely adjusted along with the engagement state of a ratchet wheel set value based on clearance fit so as to ensure the concentricity of an inner circumference transmission connection structure and an outer circumference transmission connection structure, and the FCT magnetic coupling, the hub and the hub assembly are fast and convenient to assemble and maintain.
In a first aspect, the invention relates to an FCT magnetic coupling, which is used for forming clearance fit with the inner wall of a hub and generating relative motion, and comprises a ring body, wherein the inner circumference of the ring body comprises a plurality of ratchets, the outer circumference is provided with a plurality of first interference transmission structures, the FCT magnetic coupling is matched with a ratchet wheel component of a tower footing through the ratchets, and the transmission is realized through the clearance fit of the first interference transmission structures and a second interference transmission structure of the hub.
In a second aspect, the invention relates to a hub, which comprises a hub shell and an FCT magnetic coupling which forms clearance fit with the inner wall of the hub shell and can generate relative motion, wherein the hub shell forms a hollow assembly cover on one side, a plurality of second interference transmission structures are arranged on the inner wall of the assembly cover, the FCT magnetic coupling comprises a ring body, the inner circumference of the ring body comprises a plurality of ratchets, the outer circumference of the ring body is provided with a plurality of first interference transmission structures, and the first interference transmission structures and the second interference transmission structures form clearance fit and realize transmission simultaneously.
In a third aspect, the invention relates to a hub assembly, which comprises a hub and a tower footing, wherein one end of the tower footing is provided with a ratchet wheel assembly, the hub comprises a hub shell and an FCT magnetic coupling which forms clearance fit with the inner wall of the hub shell and can generate relative motion, the hub shell forms a hollow assembly cover on one side, the inner wall of the assembly cover is provided with a plurality of second interference transmission structures, the FCT magnetic coupling comprises a ring body, the inner circumference of the ring body comprises a plurality of ratchets, the outer circumference of the ring body is provided with a plurality of first interference transmission structures, the plurality of ratchets are in linkage fit with the ratchet wheel assembly of the tower footing, the clearance fit is formed between the first interference transmission structures and the second interference transmission structures, and the transmission between the FCT magnetic coupling and the hub is realized.
In a fourth aspect, the present invention relates to a bicycle comprising an FCT magnetic coupling according to the first aspect or a hub assembly according to the second aspect or a hub assembly according to the third aspect.
According to the FCT magnetic coupling, the hub assembly and the bicycle, the coupling with the traditional thread fixed to the hub is changed into a clearance fit combined transmission structure, the FCT magnetic coupling enables the transmission center of the inner part and the jack piece to be concentric with the transmission center of the outer teeth and the hub according to the meshing condition of the jack piece of the ratchet assembly in a dynamic fine adjustment mode when in work, the limitation that the outer circumferential thread of the coupling cannot be completely concentric with the jack piece and the meshing center of the inner circumferential ratchet is overcome, instantaneous abnormal sound of cruising and restarting is eliminated, and riding experience of a user is improved.
In addition, according to the FCT magnetic coupling, the hub, the wheel hub assembly and the bicycle, at least two magnets are arranged on the mounting surface inside the assembling cover of the hub, and the magnetic absorption assembling plane of the FCT magnetic coupling is absorbed on the mounting surface under the influence of magnetic force, so that the FCT magnetic coupling does not move towards one end of the tower footing and is prevented from rubbing with the tower footing to influence the riding process and speed. The design of novel FCT magnetic coupling makes the performance index of flower-drum all obtain promoting, when making the simpler lighter weight of flower-drum structure, keeps the good incorruptibility of flower-drum and rigidity, the design that transmission structure was interfered to first and second makes wheel hub subassembly dismantle when maintaining directly take out FCT magnetic coupling in the flower-drum shell can, equipment convenient and fast, it is convenient to maintain.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is a block diagram of a prior art hub;
FIG. 2 is a schematic perspective view of the hub of the present invention;
FIG. 3 is a cross-sectional view of the hub of the present invention taken along the central axis;
FIG. 4 is an exploded view of the hub assembly of the present invention;
FIG. 5 is an exploded view of the hub assembly of the present invention;
FIG. 6 is a schematic structural view of the hub and FCT magnetic coupling of the present invention;
FIG. 7 is a schematic structural diagram of the hub of the present invention after installation of the FCT magnetic coupling;
FIG. 8 is a schematic structural view of a tower foundation and FCT magnetic coupling of the present invention;
FIG. 9 is a schematic structural view of the tower base of the present invention after installation of the FCT magnetic coupling;
FIG. 10 is a schematic structural view of a second embodiment of the FCT magnetic coupling of the present invention and a tower foundation;
fig. 11 is a schematic structural view of a third embodiment of the FCT magnetic coupling of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 2, 3 and 4 together, a hub assembly according to an embodiment of the present application is shown, which includes a hub 2 and a tower footing 7.
The hub 2 comprises a hub shell 21 and an FCT magnetic coupling 3 which is in clearance fit with the inner wall of the hub shell 21 and can generate relative movement. The hub shell 21 is formed with a hollow fitting cover 25 at one side, and a plurality of second interference transmission structures are provided on the inner wall of the fitting cover 25. The ratchet wheel component 6 is arranged at one end of the tower footing 7. The FCT magnetic coupling 3 comprises a ring 31, the inner circumference of the ring 31 comprises a plurality of ratchet teeth 32 and the outer circumference is provided with a plurality of first interference transmission structures, the plurality of ratchet teeth 32 are linked with the ratchet assembly 6 of the tower foundation 7 to transmit power from the tower foundation 7 to the FCT magnetic coupling 3. The first interference transmission structure and the second interference transmission structure of the FCT magnetic coupling 3 form the clearance fit therebetween and realize the transmission between the FCT magnetic coupling 3 and the hub.
Referring to fig. 3 and 5, the hub shell 21 is provided with a shaft core 1, and the shaft core 1 is provided with a first bearing 12 and a second bearing 13 in the hub shell 21. The fitting cover 25 is formed on the side of the second bearing 13. The hub shell 21 is provided with a first spacer 22 attached to one side of the first bearing 12 in a plug-in manner, and the first spacer 22 is provided with a release preventing rubber ring 23 on the inner side. In other embodiments, the first gasket 22 can be connected with the shaft core 1 by screw threads, and in the screw thread connection embodiment, the rubber ring 23 is not required.
Referring to fig. 2, 5 and 8, the foundation 7 includes a foundation shell 71 and a mounting portion 78 protruding from an end of the foundation shell 71. The mounting portion 78 is formed with a plurality of engaging grooves 69 and a plurality of limiting grooves 68.
The shaft core 1 passes through the foundation shell 71, and a third bearing 72 and a fourth bearing 73 are provided in the foundation shell 71. The first sleeve 74 is fitted over the shaft core 1, the third bearing 72 and the fourth bearing 73 are restricted from the inside by the first sleeve 74, and the third bearing 72 and the fourth bearing 73 are restricted from the outside by the second sleeve 75. The tower footing shell 71 is provided with a second gasket 71 which is installed in a plugging mode on one side of the principle hub 2, and the second gasket 71 is provided with an anti-loosening rubber ring 77 at the position of the joint shaft core 1. In other embodiments, the second gasket 76 can be screwed to the shaft core 1, and in the screwed embodiment, the rubber ring 77 is not required.
Referring to fig. 5 and 8, the ratchet assembly 6 mounted on the mounting portion 78 of the tower base 7 includes at least one set of jack blades and springs abutting against the corresponding jack blades. For example, as shown in fig. 8, three jacks are arranged in a group and corresponding springs are arranged on the tower footing. The lifting device specifically comprises a first jack 61, a spring 62 tightly propped against the first jack 61, a second jack 63, a spring 64 tightly propped against the second jack 63, a third jack 65 and a spring 66 tightly propped against the second jack 65. When the device is installed, the first jack piece 61 and the linked spring 62 are installed in the same clamping groove; the second jack 63 and the linked spring 64 are mounted in the same slot, for example, the second jack 63 and the spring 64 are mounted in the slot 69; the third jack blade 65 and the linked spring 66 are mounted in the same slot. The limiting groove 68 opened on the mounting portion 78 is provided with a clamp spring 67. When the jack pieces of the same group are clamped with the corresponding ratchets, the transmission between the tower foundation 7 and the FCT magnetic coupling 3 is realized.
The FCT magnetic coupling 3 is a metal member to facilitate magnet attraction. The FCT magnetic coupling 3 is in clearance fit with the inner wall of the hub 2 and generates relative movement. The FCT magnetic coupling 3 comprises a ring 31, which forms a magnetically attractive mounting plane a on one side and a mounting plane B on the other side. The inner circumference of the ring 31 comprises a number of ratchet teeth 32 and the outer circumference is provided with a number of first interference transmission structures. The FCT magnetic coupling is matched with a ratchet wheel component of the tower footing through the ratchet and realizes transmission through clearance engagement of the first interference transmission structure and the second interference transmission structure of the hub.
The plurality of ratchet teeth 32, in cooperation with the ratchet assembly 6 of the tower base 7, transmit power from the ratchet assembly 6 of the tower base 7 to the FCT magnetic coupling 3. The first interference transmission structure of the FCT magnetic coupling 3 and the second interference transmission structure arranged on the inner wall of the assembly cover 25 form clearance fit and realize smooth transmission between the FCT magnetic coupling 3 and the hub 2 and smooth transmission of starting after cruise stopping.
In this embodiment, the ratchet assembly 6 has three jack pieces in one group, and is engaged with the corresponding ratchet for transmission. It can be understood that the ratchet wheel assembly 6 can also be provided with two or three sets of jack pieces, and when the jack pieces in the same set are clamped with the corresponding ratchet teeth, the transmission between the tower footing 7 and the FCT magnetic coupling 3 is realized.
When this ratchet subassembly 6 sets up two sets of or three group's jack pieces, a plurality of ratchets need to be add to the interior circumference of ring body 31, the quantity of ratchet is decided according to the jack piece quantity rather than the complex, for example, install 9 jack pieces of equipartition on this column foot installation department 78, this 9 jack piece divide into three groups, every 3 jack pieces constitute a set ofly, each two liang interval equipartitions of group are on the installation department 78 of this column foot in three group's jack pieces, this ratchet subassembly and this FCT magnetic coupling are by a set of interlock at every turn, two sets of or three groups circulation are actuated. The 9 jack pieces are divided into 3 groups, the form of each group of 3 pieces staggers to work, and at any time point, three jack pieces and the ratchet 32 are in an occlusion position, so that the acceleration response is fast and the pressing is smooth.
Referring to fig. 5 and 9, in the present embodiment, the linkage structure between the FCT magnetic coupling 3 and the hub shell 21 is configured to be a clearance fit and a special transmission structure. The FCT magnetic coupling 3 finely adjusts the center position according to the meshing condition of the jack set of the ratchet assembly 6 during transmission, for example, the jacks 61, 63 and 65 simultaneously mesh the corresponding ratchets 32, but the meshing position of the jack 61 and/or the jack 63 is shallower than that of the jack 65, which means that the instantaneous thrust exerted by the jack 61 and the jack 63 on the ratchets is larger, at this time, the jack set slightly supports the ring body of the corresponding part of the jack under the action of dynamic force balance, the height supported by the FCT magnetic coupling 3 is restrained by the clearance fit clearance, the transmission center position of the jack set is finely adjusted, and smooth starting and abnormal noise that the jack breaks away from meshing are ensured to be still generated during transmission under the condition that the jack set is not completely meshed with the ratchets. In the embodiment, based on the structure, the transmission centers of the ratchet and the jack piece are concentric with the transmission centers of the outer teeth and the hub, the limitation that the fixed transmission center of the coupler cannot be completely concentric with the meshing center of the dynamically-changed jack piece and the ratchet by a process during manufacturing of the outer circumferential threads of the coupler in the prior art is overcome, and instantaneous abnormal noise of cruise restarting is eliminated.
There are various embodiments of the first interference transmission structure of the FCT magnetic coupling 3 and the second interference transmission structure provided in the hub 21 to be engaged therewith. The FCT magnetic coupling is realized in a plurality of ways, as long as the FCT magnetic coupling can be ensured to form clearance fit with the inner wall of the hub and can generate relative motion, the space position of the FCT magnetic coupling can be dynamically adjusted along with the change of the meshing center of the jack piece and the ratchet, so that the meshing center of the ratchet wheel assembly and the ratchet is superposed with the meshing centers of the first interference transmission structure and the second interference transmission structure, namely, the meshing center and the outer meshing center can be kept concentric all the time, the limitation of the process for manufacturing a ring body is broken through, the inner transmission and the outer transmission of the FCT magnetic coupling are completely concentric during transmission, the transmission is smooth, the instantaneous meshing of the vehicle which is started again after cruising and stopping the foot does not generate bang sound,
referring to fig. 4, 6 and 7, in the first embodiment of the FCT magnetic coupling, the first interference transmission structures on the outer circumference of the magnetic coupling 3 are first circular arc teeth 33 formed on the outer circumference of the ring body 31 in parallel, and the first circular arc teeth 33 include arc interference surfaces 34 for engaging and transmitting with the second interference transmission structures.
Corresponding to the first interference transmission structure, the second interference transmission structures on the inner wall of the hub shell 21 are second circular arc teeth 257 formed on the inner wall of the assembling cover 25 in parallel, and the first circular arc teeth 33 and the second circular arc teeth 257 include arc interference surfaces. When the gear is engaged, the first circular arc teeth 33 are in clearance fit with the circular arc tooth grooves 256 of the hub shell 21, and transmission is performed through interaction of the first circular arc teeth 33 and the second circular arc teeth 257.
Referring to fig. 11, in a second embodiment of the FCT magnetic coupling, the FCT magnetic coupling includes a ring 310, and a plurality of ratchet teeth 312 are disposed on an inner circumference of the ring 310. The first interference transmission structures are first geometric teeth 314 formed on the outer circumference of the ring body 310 and parallel to each other, each first geometric tooth 314 has the same shape, and both side edges of each first geometric tooth 314 respectively include a first interference angle 315 and a second interference angle 316. Each first geometric tooth 314 is formed of a polygon and can be provided with more interference angles, depending on the clearance fit requirements or transmission design requirements.
Corresponding to the first interference transmission structure, the second interference transmission structures on the inner wall of the hub shell 21 are second geometric teeth (not shown) formed on the inner wall of the mounting cover 25 and parallel to each other. The second geometric tooth also includes an interference angle. In practical implementation, each second geometric tooth has the same shape, and the two side edges have the same structure as the first geometric tooth and also comprise a first interference angle and a second interference angle. Furthermore, the second geometric tooth is also formed by a polygon and can be provided with more interference angles, depending on the clearance fit requirements or the transmission design requirements. During engagement, the first geometry teeth 33 engage into the tooth gap between two second geometry teeth and transmit the drive by interference angle interaction.
Referring to fig. 10, in a third embodiment of the FCT magnetic coupling, the FCT magnetic coupling includes a ring 300, and a plurality of ratchet teeth 302 are disposed on an inner circumference of the ring 300. The first interference transmission structures are formed in first sharp teeth 303 which are parallel to each other on the outer circumference of the ring body, the shape of each sharp tooth is the same, and the length of the left side 304 of each sharp tooth 303 is equal to the length of the right side 305 degrees.
The plurality of second interference transmission structures are second sharp teeth (not labeled) parallel to each other formed on the inner wall of the mounting cover 25 corresponding to the first interference transmission structure, the first sharp teeth 303 and the second sharp teeth have the same structure, and the two sides have the same length. During engagement, the first tines 303 engage into the tooth gap between the two second tines and drive through tine interaction.
Referring to fig. 6 again, in order to limit the axial degree of freedom of the FCT magnetic coupling 3 from the direction of the shaft core 1 in the hub shell 21, a mounting surface 251 is provided in the mounting cover 25 of the hub 2, and at least two mounting grooves are formed in the mounting surface 251, and a magnet is mounted in each mounting groove. In this embodiment, the mounting surface 251 is provided with a first mounting groove 252 and a second mounting groove 253. The first magnet 27 is installed in the first installation groove 252, and the second magnet 26 is installed in the second installation groove 253. The ring 31 has a magnetic assembly plane a formed on one side thereof, and the magnetic assembly plane a is attracted to the mounting surface 251 under the influence of the magnetic forces of the first magnet 27 and the second magnet 26. The magnet is arranged to attract the FCT magnetic coupling 3 to move towards the tower footing 7, so that the magnet rubs against the mounting part 78 of the tower footing to influence the riding speed. In addition, during transmission, when the meshing of the jack group and the ratchet is not completely in place, the jack group slightly supports the ring body of the corresponding part of the jack under the action of dynamic force balance, the supporting height of the FCT magnetic coupling 3 is restrained by a clearance fit between the FCT magnetic coupling and the hub 2, the transmission central position of the jack group is finely adjusted, under the movable restraint of the magnet, the fine adjustment of the central position is the fine adjustment of the three-dimensional position, the fine adjustment of the radial direction plane of the shaft core 1 generated between the first interference transmission structure and the second interference transmission structure also comprises the fine adjustment of the axial front and back position of the shaft core 1, and therefore the starting and the transmission can be smoothly carried out under the condition that the meshing of the jack group and the ratchet is not completely in place, and abnormal sound that the jack is separated from the meshing is not generated.
This embodiment also relates to a bicycle comprising an FCT magnetic coupling or hub assembly as described above.
In the bicycle transmission, a pedal is treaded to drive a chain wheel, a driving chain drives a flywheel, the flywheel drives a tower footing 7, a ratchet wheel assembly 6 in the tower footing 7 drives an FCT magnetic coupling 3, the FCT magnetic coupling 3 drives a hub 2, and the hub 2 finally drives a wheel to rotate through spokes.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. The FCT magnetic coupling is characterized in that the FCT magnetic coupling is used for forming clearance fit with the inner wall of a hub and producing relative motion, the FCT magnetic coupling comprises a ring body, the inner circumference of the ring body comprises a plurality of ratchets, the outer circumference of the ring body is provided with a plurality of first interference transmission structures, the FCT magnetic coupling is matched with a ratchet wheel assembly of a tower footing through the ratchets, and the first interference transmission structures are in clearance fit with a second interference transmission structure of the hub.
2. The FCT magnetic coupling of claim 1, wherein a magnetic attraction assembly plane is formed on one side of the ring body, the first interference transmission structures are first circular arc teeth formed on the outer circumference of the ring body and parallel to each other, and the first circular arc teeth comprise arc interference surfaces; or the first interference transmission structures are first geometric teeth which are formed on the outer circumference of the ring body and are parallel to each other, and the addendum part of the first geometric teeth comprises two interference angles; or the first interference transmission structures are first sharp teeth which are formed on the outer circumference of the ring body and are parallel to each other, and the lengths of two side edges of the first sharp teeth are equal.
3. The utility model provides a hub, its characterized in that, including the hub shell and with hub shell inner wall forms clearance fit and can produce relative motion's FCT magnetic coupling, the hub shell forms hollow assembly cover in one side, set up a plurality of second interference transmission structures on the inner wall of assembly cover, FCT magnetic coupling includes the ring body, the interior circumference of ring body includes a plurality of ratchets and the outer circumference sets up a plurality of first interference transmission structures, form between first interference transmission structure and the second interference transmission structure clearance fit and realize the transmission simultaneously.
4. The hub according to claim 3, wherein the mounting cover includes a mounting surface therein, the mounting surface has at least two mounting grooves, each mounting groove has a magnet mounted therein, one side of the ring body forms a magnetic attraction mounting plane, and the magnetic attraction mounting plane is attracted to the mounting surface under the influence of magnetic force.
5. The hub according to claim 3, wherein the first interference transmission structures are first circular arc teeth formed on the outer circumference of the ring body and parallel to each other, the second interference transmission structures are second circular arc teeth formed on the inner wall of the assembling cover and parallel to each other, and the first circular arc teeth and the second circular arc teeth comprise arc interference surfaces; or the plurality of first interference transmission structures are first geometric teeth which are formed on the outer circumference of the ring body and are parallel to each other, the plurality of second interference transmission structures are second geometric teeth which are formed on the inner wall of the assembling cover and are parallel to each other, and the first geometric teeth and the second geometric teeth comprise interference angles; or the first interference transmission structures are first sharp teeth which are formed on the outer circumference of the ring body and are parallel to each other, the second interference transmission structures are second sharp teeth which are formed on the inner wall of the assembling cover and are parallel to each other, and the lengths of two side edges of the first sharp teeth and the second sharp teeth are equal.
6. The hub according to claim 3, wherein a shaft core is provided inside the hub shell, a first bearing and a second bearing are mounted on the shaft core, and the hub shell forms the fitting cover on the side of the second bearing.
7. The utility model provides a hub assembly, includes flower-drum and column foot, column foot one end sets up ratchet subassembly, its characterized in that, the flower-drum include the flower-drum shell and with the FCT magnetic coupling that the flower-drum shell inner wall formed clearance fit and can produce relative motion, the flower-drum shell forms hollow assembly cover in one side, it interferes the transmission structure to set up a plurality of seconds on the inner wall of assembly cover, FCT magnetic coupling includes the ring body, the interior circumference of ring body includes a plurality of ratchets and the outer circumference sets up a plurality of first interference transmission structures, the ratchet subassembly linkage cooperation of a plurality of ratchets and column foot, first interference transmission structure and second interfere and form between the transmission structure the clearance fit and realize FCT magnetic coupling with transmission between the flower-drum.
8. The hub assembly of claim 7, wherein the bottom of the mounting cover includes a mounting surface, the mounting surface has at least two mounting slots, each mounting slot has a magnet mounted therein, one side of the ring body forms a magnetic assembly plane, and the magnetic assembly plane is attracted to the mounting surface under the influence of magnetic force.
9. The hub assembly of claim 7, wherein the tower base comprises a tower base shell and a mounting portion protruding from one end of the tower base shell, the mounting portion is provided with a plurality of slots and a limiting groove, the ratchet assembly comprises at least one set of jack pieces and springs abutting against the corresponding jack pieces, a jack piece and a spring are mounted in each slot, a snap spring is mounted in the limiting groove, and transmission between the tower base and the FCT magnetic coupling is realized when the jack pieces in the same set are clamped with the ratchet teeth.
10. A bicycle comprising an FCT magnetic coupling according to any of claims 1-2 or a hub according to any of claims 3-6 or a hub assembly according to any of claims 7-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210563672.8A CN114810860A (en) | 2022-05-23 | 2022-05-23 | FCT magnetic coupling, flower-drum, wheel hub subassembly and bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210563672.8A CN114810860A (en) | 2022-05-23 | 2022-05-23 | FCT magnetic coupling, flower-drum, wheel hub subassembly and bicycle |
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| CN114810860A true CN114810860A (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210563672.8A Pending CN114810860A (en) | 2022-05-23 | 2022-05-23 | FCT magnetic coupling, flower-drum, wheel hub subassembly and bicycle |
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| CN (1) | CN114810860A (en) |
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| CN215096788U (en) * | 2021-06-04 | 2021-12-10 | 康艺明 | Bicycle hub |
| CN114055996A (en) * | 2021-12-31 | 2022-02-18 | 深圳市飞锐照明有限公司 | One-way transmission hub structure and bicycle |
| CN216478562U (en) * | 2021-12-25 | 2022-05-10 | 龙诚车业（张家港）有限公司 | Bicycle flywheel |
| CN217271535U (en) * | 2022-05-23 | 2022-08-23 | 深圳市飞锐照明有限公司 | FCT magnetic coupling, flower-drum, wheel hub subassembly and bicycle |
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2022
- 2022-05-23 CN CN202210563672.8A patent/CN114810860A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200836973A (en) * | 2007-03-14 | 2008-09-16 | Chosen Co Ltd | Bicycle chain transmission sprocket structure |
| CN102774236A (en) * | 2011-05-10 | 2012-11-14 | 昆山亨利金属科技有限公司 | Ratchet wheel of wheel hub of bicycle |
| CN203032286U (en) * | 2012-12-27 | 2013-07-03 | 黄柳迎 | Bicycle driving device |
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