CN219035378U - Flywheel and electric bicycle - Google Patents
Flywheel and electric bicycle Download PDFInfo
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- CN219035378U CN219035378U CN202320014942.XU CN202320014942U CN219035378U CN 219035378 U CN219035378 U CN 219035378U CN 202320014942 U CN202320014942 U CN 202320014942U CN 219035378 U CN219035378 U CN 219035378U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Abstract
The embodiment of the utility model provides a flywheel and an electric bicycle, wherein the flywheel comprises two sealing mechanisms, and an outer wheel, a locking mechanism and an inner wheel which are sleeved in sequence from outside to inside. The periphery side of locking mechanism and the inner peripheral wall detachable connection of outer wheel, locking mechanism have a plurality of wedge spaces and a plurality of locking subassembly, set up locking subassembly in a plurality of wedge spaces that set up around the circumference interval of locking mechanism, locking subassembly and the outer peripheral face rolling fit of interior wheel to realize controlling the rotation and the stop of outer wheel through frictional resistance, thereby can reduce the noise that the flywheel during operation produced. One of the sealing mechanisms is arranged on one side of the inner wheel and the locking mechanism in the axial direction, and the other sealing mechanism is arranged on the other side of the inner wheel and the locking mechanism in the axial direction, so that sundries outside the flywheel can be prevented from entering the wedge-shaped space, the influence of the sundries on the locking mechanism is avoided, and the service life of the flywheel is prolonged.
Description
Technical Field
The utility model relates to the technical field of electric bicycle equipment, in particular to a flywheel and an electric bicycle.
Background
With the continuous development of new energy technology, electric bicycles are widely popularized and applied as an environment-friendly riding instead of walking tool. The electric bicycle is a vehicle which uses a storage battery as an auxiliary energy source and is provided with a motor, a controller, a storage battery, a handle bar, and other operating components and a display instrument system on the basis of a common bicycle.
The electric bicycle in the related art mainly transmits power through a flywheel. However, the flywheel in the related art generates larger noise during operation, and the outside of the flywheel easily enters the inside of the flywheel so as to influence the rotation of the flywheel, thereby reducing the service life of the flywheel.
Disclosure of Invention
The embodiment of the application provides a flywheel and electric bicycle for the flywheel in solving the relevant technique can produce great noise at the during operation, and thereby the outside easy inside rotation that influences the flywheel of entering of flywheel reduces the technical problem of flywheel's life.
In order to achieve the above object, the embodiment of the present utility model provides the following technical solutions:
the first aspect of the embodiment of the utility model provides a flywheel, which comprises two sealing mechanisms, and an outer wheel, a locking mechanism and an inner wheel which are sleeved in sequence from outside to inside;
the outer peripheral side of the locking mechanism is detachably connected with the inner peripheral wall of the outer wheel, the locking mechanism is provided with a plurality of wedge-shaped spaces and a plurality of locking assemblies, the wedge-shaped spaces are arranged at intervals around the circumference of the locking mechanism, and each wedge-shaped space is internally provided with one locking assembly which is in rolling fit with the outer peripheral surface of the inner wheel;
one of the seal mechanisms is arranged on one side of the inner wheel and the locking mechanism in the axial direction, and the other seal mechanism is arranged on the other side of the inner wheel and the locking mechanism in the axial direction.
On the basis of the technical scheme, the utility model can be improved as follows.
In one possible implementation manner, the locking mechanism comprises an outer ring and a retainer arranged on the inner peripheral side of the outer ring, wherein the outer ring is detachably connected with the inner peripheral wall of the outer ring, and a plurality of wedge-shaped notches are formed in the inner peripheral wall of the outer ring;
the outer peripheral surface of the retainer is provided with a plurality of wedge-shaped grooves which are arranged at intervals, the side wall of each wedge-shaped groove and at least part of the inner wall of each wedge-shaped gap enclose a wedge-shaped space, and the radial depth of each wedge-shaped space is gradually increased from one end to the other end in the circumferential direction of the retainer;
when the locking assembly moves to the large end of the wedge-shaped space, the outer wheel and the locking mechanism rotate relative to the inner wheel;
when the locking assembly moves to the small end of the wedge-shaped space, the outer wheel and the locking mechanism stop rotating.
In one possible implementation, each sealing mechanism includes a first sealing ring, a second sealing ring, and a cover plate;
the first sealing ring is arranged on the side surface of the outer ring in the axial direction, and the second sealing ring is arranged on the side surface of the inner ring in the axial direction;
the apron sets up in the outer lane, and the apron towards one side and the first sealing washer and the second sealing washer butt of locking mechanism.
In one possible implementation manner, a first annular groove is formed in the lateral surface of the outer ring in the axial direction, and a first sealing ring is arranged in the first annular groove;
the side of the inner wheel in the axial direction is provided with a second annular groove, and a second sealing ring is arranged in the second annular groove.
In one possible implementation, the sealing mechanism further comprises a snap spring;
each clamp spring is arranged on one side, back to the locking mechanism, of one cover plate, and the outer edge of the clamp spring is clamped on the outer ring.
In one possible implementation, the outer ring is provided with flanges extending in its axial direction on both axially opposite sides, the flanges being provided on the outer peripheral side of the first annular groove,
the inner peripheral wall of the flange is provided with a third annular groove, and the outer edge of the clamp spring is clamped in the third annular groove.
In one possible implementation, the locking assembly includes an elastic member and a rolling member, the elastic member is disposed between the rolling member and one end of the wedge-shaped space having a large radial depth, the rolling member is detachably connected to the elastic member, the elastic member is disposed so as to enable the rolling member to roll toward one end of the wedge-shaped space having a small radial depth, and the rolling member is detachably connected to an outer circumferential surface of the inner wheel.
In one possible implementation, the elastic member is a spring, the rolling member is a cylindrical roller, an axis of the cylindrical roller is parallel to an axis of the locking mechanism, one end of the spring is disposed on a side wall of the wedge-shaped space, and the other end of the spring is detachably connected with a side surface of the cylindrical roller.
In one possible implementation manner, a plurality of clamping blocks are arranged on the outer circumferential surface of the locking mechanism, a plurality of clamping grooves are formed in the inner circumferential wall of the outer wheel, and each clamping block is arranged in one clamping groove so that the locking mechanism is clamped with the outer wheel;
and/or the outer wheel is a synchronous belt wheel, the outer periphery of the outer wheel is provided with transmission teeth, and the inner peripheral wall of the inner wheel is provided with internal threads.
A second aspect of the embodiment of the present utility model provides an electric bicycle, which includes a bicycle body, a hub, and a flywheel as described above;
the wheel hub is connected with the vehicle body in a matched mode, the flywheel is connected with the wheel hub in a matched mode, and the flywheel is used for driving the wheel hub to rotate.
The embodiment of the utility model provides a flywheel and an electric bicycle, wherein the flywheel comprises two sealing mechanisms, and an outer wheel, a locking mechanism and an inner wheel which are sleeved in sequence from outside to inside. The periphery side of locking mechanism and the inner peripheral wall detachable connection of outer wheel, locking mechanism have a plurality of wedge spaces and a plurality of locking subassembly, set up locking subassembly in a plurality of wedge spaces that set up around the circumference interval of locking mechanism, locking subassembly and the outer peripheral face rolling fit of interior wheel to realize controlling the rotation and the stop of outer wheel through frictional resistance, thereby can reduce the noise that the flywheel during operation produced. One of the sealing mechanisms is arranged on one side of the inner wheel and the locking mechanism in the axial direction, and the other sealing mechanism is arranged on the other side of the inner wheel and the locking mechanism in the axial direction, so that sundries outside the flywheel can be prevented from entering the wedge-shaped space, the influence of the sundries on the locking mechanism is avoided, and the service life of the flywheel is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a flywheel according to an embodiment of the present utility model;
FIG. 2 is a front view of the flywheel of FIG. 1;
FIG. 3 is a cross-sectional view of the flyer of FIG. 2;
FIG. 4 is an interface schematic of the flywheel of FIG. 2;
fig. 5 is a schematic view of the structure of the cage and inner wheel of fig. 1.
Reference numerals illustrate:
100-outer wheel;
110-clamping grooves; 120-driving teeth;
200-locking mechanism;
210-wedge space; 220-a locking assembly; 230-an outer ring; 240-a cage;
221-an elastic member; 222-rolling elements;
231-wedge-shaped notch; 232-a first annular groove; 233-flange; 234-a third annular groove;
235-clamping blocks; 241-a wedge groove;
300-inner wheel;
310-a second annular groove; 320-internal threads;
400-sealing mechanism;
410-a first sealing ring; 420-a second sealing ring; 430-cover plate; 440-snap spring.
Detailed Description
As described in the background art, electric bicycles in the related art mainly transmit power through a flywheel. However, the flywheel in the related art generates larger noise during operation, and the outside of the flywheel easily enters the inside of the flywheel so as to influence the rotation of the flywheel, thereby reducing the service life of the flywheel.
The reason for this problem is that the flywheel mainly used in the electric bicycle in the related art is a ratchet pawl type flywheel or a chain drive flywheel. The ratchet pawl formula flywheel is in the rotation in-process, and the pawl can constantly strike the hasp on the ratchet to send great noise, although have and pour into a large amount of damping grease in ratchet pawl department, can alleviate noise problem to a certain extent, because the damping force of flywheel is great in the initial stage of pouring into damping grease, cause the crank to follow the rotation easily, and after using 3 to 4 months, along with the continuous loss of damping grease, the noise can appear again. And because the structure of the flywheel in the related art is not provided with a sealing mechanism, impurities such as sediment, rainwater, sewage and the like in the external environment of the flywheel are easy to enter the internal structure of the flywheel, thereby influencing the rotation and abrasion of the flywheel and reducing the service life of the flywheel.
Aiming at the technical problems, the embodiment of the utility model provides a flywheel, which comprises two sealing mechanisms, and an outer wheel, a locking mechanism and an inner wheel which are sleeved in sequence from outside to inside. The periphery side of locking mechanism and the inner peripheral wall detachable connection of outer wheel, locking mechanism have a plurality of wedge spaces and a plurality of locking subassembly, set up locking subassembly in a plurality of wedge spaces that set up around the circumference interval of locking mechanism, locking subassembly and the outer peripheral face rolling fit of interior wheel to realize controlling the rotation and the stop of outer wheel through frictional resistance, thereby can reduce the noise that the flywheel during operation produced. One of the sealing mechanisms is arranged on one side of the inner wheel and the locking mechanism in the axial direction, and the other sealing mechanism is arranged on the other side of the inner wheel and the locking mechanism in the axial direction, so that sundries outside the flywheel can be prevented from entering the wedge-shaped space, the influence of the sundries on the locking mechanism is avoided, and the service life of the flywheel is prolonged.
In order to make the above objects, features and advantages of the embodiments of the present utility model more comprehensible, the technical solutions of the embodiments of the present utility model will be described clearly and completely with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, 2 and 3, a first aspect of an embodiment of the present utility model provides a flywheel, which may include two sealing mechanisms 400, and an outer wheel 100, a locking mechanism 200 and an inner wheel 300, which are sleeved in sequence from outside to inside. The outer ring 100, the lock mechanism 200 and the inner ring 300 are coaxially and concentrically arranged, the lock mechanism 200 is annular, the inner ring 300 is arranged in the annular shape of the lock mechanism 200, and the lock mechanism 200 is arranged in the annular shape of the outer ring 100 to form a nested structure. In some embodiments, the inner wheel 300 does not rotate and the outer wheel 100 and locking mechanism 200 are able to rotate in one direction about an axis relative to the inner wheel 300, and the locking mechanism 200 prevents rotation of the outer wheel 100 if the outer wheel 100 rotates in the opposite direction.
Referring to fig. 3, the locking mechanism 200 has a plurality of wedge-shaped spaces 210 and a plurality of locking members 220, the plurality of wedge-shaped spaces 210 being disposed at intervals around the circumference of the locking mechanism 200, one locking member 220 being disposed in each wedge-shaped space 210, the locking members 220 being in rolling engagement with the outer circumferential surface of the inner wheel 300, on the outer circumferential side of the locking mechanism 200 being detachably connected to the inner circumferential wall of the outer wheel 100.
In an exemplary embodiment, the wedge-shaped space 210 has an opening facing the outer circumferential surface of the inner wheel 300, the locking assembly 220 is disposed in the wedge-shaped space 210 through the opening, and the locking structure is in rolling contact with the inner wheel 300 only through the locking assembly 220. The depth of the wedge-shaped space 210 in the radial direction (as indicated by the dimension x in fig. 3) increases gradually from one end to the other in the counterclockwise direction. When the outer wheel 100 rotates the locking mechanism 200 in the counterclockwise direction, the locking assembly 220 moves in the wedge-shaped space 210 around the outer circumferential surface of the inner wheel 300 in the clockwise direction, and when the locking assembly moves to a certain position of the wedge-shaped space 210, one side of the locking assembly 220, which is far away from the inner wheel 300, is abutted against the bottom wall of the wedge-shaped space 210, and one side of the locking assembly 220, which is close to the inner wheel 300, is abutted against the outer circumferential surface of the inner wheel 300, so that the locking mechanism 200 and the outer wheel 100 are prevented from rotating relative to the inner wheel 300 under the action of friction resistance. By rotating the outer race 100 in the clockwise direction due to frictional resistance between the locking assembly 220 and the bottom wall of the wedge-shaped space 210 and the outer peripheral surface of the inner race 300, noise generated when the locking mechanism 200 operates when the outer race 100 rotates can be reduced.
Referring to fig. 1 and 2, in a specific implementation, the sealing mechanism 400 may include two sealing mechanisms 400, where one sealing mechanism 400 is disposed on one side of the inner wheel 300 and the locking mechanism 200 in the axial direction, and the other sealing mechanism 400 is disposed on the other side of the inner wheel 300 and the locking mechanism 200 in the axial direction, so that two sides of the sealing wedge space 210 in the axial direction are directly exposed in the external environment, impurities in the external environment can be prevented from entering the wedge space 210, and the influence of the external impurities on the locking assembly 220 can be reduced, so that the service life of the locking mechanism 200 and the service life of the flywheel are improved.
It should be noted that, when the flywheel of the present application is assembled, damping grease can be injected into each wedge-shaped space 210 of the locking mechanism 200, so as to further reduce friction loss of the locking assembly 220 during rotation in the wedge-shaped space 210, and further reduce noise when the locking mechanism 200 works. Furthermore, by providing a sealing structure, the loss rate of damping grease injected into the wedge-shaped space 210 can be reduced, and the service life of the flywheel can be prolonged.
The embodiment of the utility model provides a flywheel, which can comprise two sealing mechanisms 400, and an outer wheel 100, a locking mechanism 200 and an inner wheel 300 which are sleeved in sequence from outside to inside. The outer circumference side of the locking mechanism 200 is detachably connected with the inner circumference wall of the outer wheel 100, the locking mechanism 200 is provided with a plurality of wedge-shaped spaces 210 and a plurality of locking assemblies 220, the locking assemblies 220 are arranged in the plurality of wedge-shaped spaces 210 which are arranged around the circumference of the locking mechanism 200 at intervals, and the locking assemblies 220 are in rolling fit with the outer circumference surface of the inner wheel 300 so as to realize the control of the rotation and the stop of the outer wheel 100 through friction resistance, thereby reducing noise generated during the working of the flywheel. And one of the sealing mechanisms 400 is arranged on one side of the inner wheel 300 and the locking mechanism 200 in the axial direction, and the other sealing mechanism 400 is arranged on the other side of the inner wheel 300 and the locking mechanism 200 in the axial direction, so that sundries outside the flywheel can be prevented from entering the wedge-shaped space 210, the influence of the sundries on the locking mechanism 200 is avoided, and the service life of the flywheel is prolonged.
Referring to fig. 1 and 3, on the basis of the above embodiment, the locking mechanism 200 may include an outer ring 230 and a holder 240 disposed at an inner circumferential side of the outer ring 230, the outer ring 230 being detachably coupled to an inner circumferential wall of the outer ring 100, the inner circumferential wall of the outer ring 230 being provided with a plurality of wedge-shaped notches 231, the wedge-shaped notches 231 gradually increasing in radial depth in a counterclockwise direction. The outer circumferential surface of the retainer 240 is provided with a plurality of wedge-shaped protrusions arranged along the circumferential direction, each wedge-shaped protrusion is provided with a wedge-shaped groove 241, two adjacent wedge-shaped grooves 241 are arranged at intervals, and each wedge-shaped protrusion is matched and connected with one end with a larger radial depth of the wedge-shaped notch 231, so that the retainer 240 can be detachably connected with the outer ring 230. The side walls of the wedge-shaped groove 241 and at least part of the inner wall of the wedge-shaped gap 231 enclose wedge-shaped spaces 210, and the radial depth of each wedge-shaped space 210 gradually increases from one end to the other end in the circumferential direction of the retainer 240. Assembling the cage 240, the outer race 230, and the locking assembly 220 into the locking mechanism 200 can improve the flexibility of the locking mechanism 200 in terms of assembly and disassembly, and facilitate individual repair and maintenance of the cage 240, the outer race 230, and the locking assembly 220 in the locking mechanism 200, reducing the repair and maintenance costs of the flywheel. In some embodiments, outer race 230 may be made from a nylon material.
Referring to fig. 3, in the present embodiment, when the locking assembly 220 moves to the large end of the wedge-shaped space 210, i.e., when the locking assembly 220 moves counterclockwise around the outer circumferential surface of the inner wheel 300, the outer wheel 100 and the locking mechanism 200 rotate relative to the inner wheel 300, and at this time, the outer wheel 100 and the locking mechanism 200 rotate in a clockwise direction relative to the inner wheel 300. When the locking unit 220 moves to the small end of the wedge-shaped space 210, that is, when the locking unit 220 moves clockwise around the outer circumferential surface of the inner wheel 300, the outer wheel 100 and the locking mechanism 200 stop rotating, at this time, the side of the locking unit 220 away from the inner wheel 300 abuts against the bottom wall of the wedge-shaped space 210, and at the same time, the side of the locking unit 220 close to the inner wheel 300 abuts against the outer circumferential surface of the inner wheel 300, and the locking unit 220 cannot move under the action of friction force, so that the outer wheel 100 and the locking mechanism 200 cannot rotate counterclockwise.
Referring to fig. 1, 2, 3 and 4, each sealing mechanism 400 may include a first sealing ring 410, a second sealing ring 420 and a cover plate 430, based on the above-described embodiments. The first sealing ring 410 and the second sealing ring 420 may be made of a rubber material having elasticity. The first seal ring 410 is disposed on the side surface of the outer ring 230 in the axial direction, the second seal ring 420 is disposed on the side surface of the inner ring 300 in the axial direction, the cover plate 430 is disposed on the outer ring 230, and one side of the cover plate 430 facing the locking mechanism 200 is in contact with the first seal ring 410 and the second seal ring 420. Through the cooperation connection of the first sealing ring 410 and the cover plate 430, external impurities can be reduced from entering the wedge-shaped space 210 through the gap on the side of the locking mechanism 200 away from the inner wheel 300, and damping grease injected into the wedge-shaped space 210 is reduced from losing from the gap on the side of the locking mechanism 200 away from the inner wheel 300. Through the cooperation connection of the second sealing ring 420 and the cover plate 430, external impurities can be reduced from entering the wedge-shaped space 210 through the gap of the locking mechanism 200, which is close to one side of the inner wheel 300, and damping grease injected into the wedge-shaped space 210 is reduced from losing from the gap of the locking mechanism 200, which is close to one side of the inner wheel 300.
Referring to fig. 2 and 4, it should be noted that during the rotation of the outer wheel 100 and the locking mechanism 200 relative to the inner wheel 300, the cover 430, the first sealing ring 410 and the second sealing ring 420 rotate together with the outer wheel 100 and the locking mechanism 200. The cover plate 430 is detachably connected with the outer ring 230 of the locking mechanism 200, and the cover plate 430 is not in direct contact with the inner ring 300, so that mutual abrasion between the cover plate 430 and the inner ring 300 during rotation can be reduced, indirect contact between the cover plate 430 and the inner ring 300 is realized by abutting the side surface of the cover plate 430 with the second sealing ring 420, and accordingly the friction loss between the cover plate 430 and the inner ring 300 is reduced, and the service life of the balun is prolonged.
Referring to fig. 1 and 4, on the basis of the above embodiment, the outer ring 230 is provided with a first annular groove 232 on the side surface in the axial direction, and the first seal ring 410 is provided in the first annular groove 232. The inner ring 300 has a second annular groove 310 formed on an axial side surface thereof, and a second seal ring 420 is provided in the second annular groove 310. By providing the first annular groove 232 on the outer ring 230, the first seal ring 410 can be prevented from being separated from the outer ring 230, and the connection stability between the first seal ring 410 and the outer ring 230 can be improved. By providing the second annular groove 310 in the inner ring 300, the second seal ring 420 can be prevented from being separated from the inner ring 300, and the connection stability between the second seal ring 420 and the inner ring 300 can be improved.
Referring to fig. 1, 2 and 4, the sealing mechanism 400 may further include snap springs 440 on the basis of the above embodiment, each snap spring 440 is disposed on a side of the cover 430 facing away from the locking mechanism 200, and an outer edge of the snap spring 440 is clamped to the outer ring 230. Through setting up jump ring 440 and compressing tightly apron 430 on first sealing member and second sealing member, can improve the connection stability of apron 430 and first sealing member and second sealing member, and can prevent that the junction of first sealing member and second sealing member and apron 430 from producing the clearance, improved sealing mechanism 400's sealing performance, and then improved the sealing performance of flywheel.
Referring to fig. 4, on the basis of the above embodiment, two axially opposite side surfaces of the outer ring 230 are each provided with a flange 233 extending in the axial direction thereof, the flange 233 is provided on the outer circumferential side of the first annular groove 232, a third annular groove 234 is provided on the inner circumferential wall of the flange 233, and the outer edge of the snap spring 440 is clamped to the third annular groove 234. By providing the third annular groove 234 on the flange 233 so that the outer edge of the snap spring 440 abuts against the bottom wall of the third annular groove 234, the snap spring 440 is prevented from being separated from the outer race 230, and the connection stability of the snap spring 440 and the outer race 230 can be increased.
Referring to fig. 1, 3 and 5, the locking assembly 220 may include an elastic member 221 and a rolling member 222, the elastic member 221 is disposed between one end of the wedge-shaped space 210 having a large radial depth and the rolling member 222, the rolling member 222 is detachably connected to the elastic member 221, the elastic member 221 is disposed to enable the rolling member 222 to roll toward one end of the wedge-shaped space 210 having a small radial depth, and the rolling member 222 is detachably connected to the outer circumferential surface of the inner wheel 300. The rolling element 222 may have a spherical shape or a cylindrical shape, and the elastic element 221 may keep the rolling element 222 in a critical state all the time, that is, the elastic element 221 may keep the rolling element 222 in a state that is about to abut against the bottom wall of the wedge-shaped space 210 and the outer circumferential surface of the inner wheel 300 all the time, so that the outer wheel 100 and the locking structure may stop rotating immediately when rotating counterclockwise.
Referring to fig. 1 and 5, on the basis of the above embodiment, the elastic member 221 is a spring, the rolling member 222 is a cylindrical roller, the axis of the cylindrical roller is parallel to the axis of the locking mechanism 200, one end of the spring is disposed at the side wall of the wedge-shaped space 210, and the other end of the spring is detachably connected to the side surface of the cylindrical roller.
Referring to fig. 1, in the above embodiment, a plurality of clamping blocks 235 are provided on the outer circumferential surface of the locking mechanism 200, and a plurality of clamping grooves 110 are provided on the inner circumferential wall of the outer wheel 100, and each clamping block 235 is disposed in one of the clamping grooves 110, so that the locking mechanism 200 is clamped with the outer wheel 100. By providing the clip 235 and the clip groove 110, the connection stability between the lock mechanism 200 and the outer wheel 100 can be improved, and the probability of separation between the lock mechanism 200 and the outer wheel 100 can be reduced. In some embodiments, if the locking mechanism 200 has the outer ring 230 and the cage 240, the plurality of clips 235 may be wound around the outer circumferential side of the outer ring 230, and the plurality of clips 235 may be spaced and uniformly distributed. In an exemplary embodiment, the outer race 230 may be made of nylon material, and the outer race 230 may be injection-molded to the inner circumferential wall of the outer race 100 in an injection molding manner.
Referring to fig. 1 to 4, the outer wheel 100 is a synchronous pulley, the outer circumference of the outer wheel 100 is provided with driving teeth 120, and the inner circumferential wall of the inner wheel 300 is provided with female threads 320. By using the synchronous pulley as the outer wheel 100, the weight of the transmission pair can be systematically reduced, and the design space of the electric bicycle and the overall weight of the electric bicycle can be improved.
The second aspect of the embodiment of the utility model provides an electric bicycle, which can comprise a bicycle body, a hub and the flywheel, wherein the hub is connected with the bicycle body in a matching way, the flywheel is connected with the hub in a matching way, and the flywheel is used for driving the hub to rotate. Through using foretell flywheel, can reduce electric bicycle at the noise of going in-process, improve electric bicycle's life, and can improve user's experience of riding.
In this specification, each embodiment or implementation is described in a progressive manner, and each embodiment focuses on a difference from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
It should be noted that references in the specification to "in the detailed description", "in some embodiments", "in this embodiment", "exemplarily", etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
Generally, terms should be understood at least in part by use in the context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, at least in part depending on the context. Similarly, terms such as "a" or "an" may also be understood to convey a singular usage or a plural usage, depending at least in part on the context.
It should be readily understood that the terms "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense such that "on … …" means not only "directly on something", but also includes "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning "on something" or "above" but also the meaning "above something" or "above" without intermediate features or layers therebetween (i.e., directly on something).
Further, spatially relative terms, such as "below," "beneath," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein interpreted accordingly.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (10)
1. The flywheel is characterized by comprising two sealing mechanisms, and an outer wheel, a locking mechanism and an inner wheel which are sleeved in sequence from outside to inside;
the outer peripheral side of the locking mechanism is detachably connected with the inner peripheral wall of the outer wheel, the locking mechanism is provided with a plurality of wedge-shaped spaces and a plurality of locking assemblies, the wedge-shaped spaces are arranged at intervals around the circumference of the locking mechanism, one locking assembly is arranged in each wedge-shaped space, and the locking assemblies are in rolling fit with the outer peripheral surface of the inner wheel;
one sealing mechanism is arranged on one side of the inner wheel and the locking mechanism in the axial direction, and the other sealing mechanism is arranged on the other side of the inner wheel and the locking mechanism in the axial direction.
2. The flywheel according to claim 1, wherein the locking mechanism comprises an outer ring and a retainer provided on an inner peripheral side of the outer ring, the outer ring is detachably connected to an inner peripheral wall of the outer ring, and a plurality of wedge-shaped notches are formed in the inner peripheral wall of the outer ring;
the outer peripheral surface of the retainer is provided with a plurality of wedge-shaped grooves which are arranged at intervals, the side wall of the wedge-shaped groove and at least part of the inner wall of the wedge-shaped notch enclose a wedge-shaped space, and the radial depth of each wedge-shaped space is gradually increased from one end to the other end in the circumferential direction of the retainer;
when the locking assembly moves to the large end of the wedge-shaped space, the outer wheel and the locking mechanism rotate relative to the inner wheel;
when the locking assembly moves to the small end of the wedge-shaped space, the outer wheel and the locking mechanism stop rotating.
3. The flywheel of claim 2 wherein each of the sealing mechanisms comprises a first sealing ring, a second sealing ring, and a cover plate;
the first sealing ring is arranged on the side surface of the outer ring in the axial direction, and the second sealing ring is arranged on the side surface of the inner ring in the axial direction;
the cover plate is arranged on the outer ring, and one side of the cover plate, which faces the locking mechanism, is abutted against the first sealing ring and the second sealing ring.
4. A flywheel according to claim 3, wherein,
the side face of the outer ring in the axial direction is provided with a first annular groove, and the first sealing ring is arranged in the first annular groove;
the side face of the inner wheel in the axial direction is provided with a second annular groove, and the second sealing ring is arranged in the second annular groove.
5. The flywheel of claim 4 wherein the sealing mechanism further comprises two snap springs;
each clamp spring is arranged on one side, facing away from the locking mechanism, of the cover plate, and the outer edge of each clamp spring is clamped on the outer ring.
6. The flywheel according to claim 5, wherein the outer ring is provided with flanges extending in an axial direction thereof on both axially opposite side surfaces thereof, the flanges being provided on an outer peripheral side of the first annular groove,
and a third annular groove is formed in the inner peripheral wall of the flange, and the outer edge of the clamp spring is clamped in the third annular groove.
7. The flywheel according to claim 1, wherein the locking assembly comprises an elastic member and a rolling member, the elastic member is disposed between the rolling member and an end of the wedge-shaped space having a large radial depth, the rolling member is detachably connected to the elastic member, the elastic member is disposed so as to enable the rolling member to roll toward an end of the wedge-shaped space having a small radial depth, and the rolling member is detachably connected to an outer circumferential surface of the inner wheel.
8. The flywheel of claim 7 wherein the elastic member is a spring and the rolling member is a cylindrical roller having an axis parallel to the axis of the locking mechanism, one end of the spring being disposed on a side wall of the wedge-shaped space, and the other end of the spring being detachably connected to a side surface of the cylindrical roller.
9. The flywheel according to claim 1, wherein a plurality of clamping blocks are arranged on the outer peripheral surface of the locking mechanism, a plurality of clamping grooves are formed in the inner peripheral wall of the outer wheel, and each clamping block is arranged in one clamping groove so that the locking mechanism is clamped with the outer wheel;
and/or the outer wheel is a synchronous belt wheel, the outer periphery of the outer wheel is provided with transmission teeth, and the inner peripheral wall of the inner wheel is provided with internal threads.
10. An electric bicycle, characterized by comprising a bicycle body, a hub and a flywheel according to any of claims 1 to 9;
the wheel hub is connected with the vehicle body in a matched mode, the flywheel is connected with the wheel hub in a matched mode, and the flywheel is used for driving the wheel hub to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320014942.XU CN219035378U (en) | 2023-01-04 | 2023-01-04 | Flywheel and electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320014942.XU CN219035378U (en) | 2023-01-04 | 2023-01-04 | Flywheel and electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219035378U true CN219035378U (en) | 2023-05-16 |
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ID=86290373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320014942.XU Active CN219035378U (en) | 2023-01-04 | 2023-01-04 | Flywheel and electric bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219035378U (en) |
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2023
- 2023-01-04 CN CN202320014942.XU patent/CN219035378U/en active Active
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