CN111776128B - Clutch type chain wheel driving device - Google Patents
Clutch type chain wheel driving device Download PDFInfo
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- CN111776128B CN111776128B CN202010745079.6A CN202010745079A CN111776128B CN 111776128 B CN111776128 B CN 111776128B CN 202010745079 A CN202010745079 A CN 202010745079A CN 111776128 B CN111776128 B CN 111776128B
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- tooth
- sleeve
- end disc
- chain wheel
- shifting
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- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 210000001611 motor endplate Anatomy 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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
- B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
- B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
- B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
- B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a clutch type chain wheel driving device, which comprises a wheel shaft, a side end disc, a chain wheel sleeve, an inner sleeve, an elastic gasket and a poking button, wherein the side end disc is arranged on the wheel shaft; the side end disc is provided with teeth, the inner sleeve is fixedly arranged on the wheel shaft, the elastic gasket is fixedly arranged on the inner end face of the inner sleeve, the poking and twisting movable sleeve is arranged on the wheel shaft and arranged on the inner side of the elastic gasket, the chain wheel sleeve is arranged on the inner sleeve through a bearing, one end of the outer side of the chain wheel sleeve is provided with a chain wheel, one end of the inner side of the chain wheel sleeve is provided with a circle of cylinder, the wall of the cylinder is provided with a guide channel matched with poking teeth of the poking and twisting, and the poking teeth of the poking and twisting are positioned in the guide channel. When riding forward, the chain drives the sprocket sleeve to rotate forward, the guide channel of the sprocket sleeve can drive the poking button to rotate forward, and the convex elastic sheet on the elastic gasket can drive the poking button to move towards the side end disc direction when the poking button rotates forward, so that tooth meshing of the inner gear ring on the poking button and the side end disc is realized, and the side end disc is driven to rotate.
Description
Technical Field
The invention belongs to the technical field of electric bicycles and bicycles, and particularly relates to a clutch type chain wheel driving device.
Background
The existing electric bicycle rear wheel driving structure is that a motor wheel is arranged on a rear wheel shaft, a threaded port for installing a flywheel (namely a chain wheel) is arranged on a motor end disc of the motor wheel, the flywheel is fixedly installed with the motor wheel through the threaded port, a circle of teeth are arranged on the flywheel outer ring, so that the flywheel outer ring is linked with a crank wheel disc through a chain to realize chain transmission, and the inside of the flywheel adopts a ratchet pawl structure to ensure unidirectional transmission of riding, and the flywheel transmission structure has the following problems:
1. The flywheel always runs along with the motor wheel, so that the working time of the flywheel is greatly prolonged, and the flywheel is internally provided with a ratchet and pawl structure to ensure the unidirectional transmission of riding, so that the ratchet and pawl structure in the flywheel is easy to damage, and the service life of the flywheel is lower.
2. After the flywheel works for a long time and ages, the condition that the crank rotates with the rotation easily occurs (when the motor wheel runs, the flywheel can possibly drive the flywheel outer ring to rotate due to the increase of the aging friction force in the flywheel, and then the flywheel outer ring drives the chain to rotate, the chain drives the crank to rotate with the rotation), the crank rotates with the rotation to cause the vehicle auxiliary sensor to send an auxiliary signal to the controller, the controller mistakenly uses an auxiliary function for a client, the galloping is caused, and hidden danger is brought to the trip safety of the client.
3. After the flywheel works and ages for a long time, when the motor wheel drives the flywheel to operate, larger noise can occur.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a clutch type chain wheel driving device.
The invention is realized by the following technical scheme:
A clutch type chain wheel driving device comprises a wheel shaft, a side end disc, a chain wheel sleeve, an inner sleeve, an elastic washer and a poking button;
The side end disc is rotatably arranged on the wheel shaft, and teeth are arranged on the side end disc;
the inner sleeve is fixedly arranged on the wheel shaft, and the elastic washer is fixedly arranged on the inner end surface of the inner sleeve;
the poking button is movably sleeved on the wheel shaft and is arranged on the inner side of the elastic washer, poking teeth are arranged on the poking button, and after the poking button moves towards the side end disc, the poking teeth of the poking button can be meshed with teeth on the side end disc;
The chain wheel sleeve is arranged on the inner sleeve through a bearing, and one end of the outer side of the chain wheel sleeve is provided with a chain wheel for being connected with a chain; one end of the inner side of the chain wheel sleeve is provided with a circle of cylinder, the wall of the cylinder is provided with a guide channel matched with the poking teeth of the poking twists, and the poking teeth of the poking twists are positioned in the guide channel.
In the above technical scheme, a ring flange is further arranged on the wall of the sprocket sleeve, an inner gear ring is arranged at the outer side end of the side end disc, the inner wall of the inner gear ring is provided with the teeth, the flange on the wall of the sprocket sleeve is positioned on the outer end face of the inner gear ring on the side end disc, and is in clearance fit with the outer end face of the inner gear ring, so that dynamic seal is formed, and external dust is placed.
In the above technical scheme, be provided with outer end dish at sprocket sleeve and the outside end of inner skleeve, this outer end dish passes through the screw thread suit and is epaxial for realize the outside location to sprocket sleeve and inner skleeve.
In the technical scheme, the wheel shaft is milled with mounting planes along the axial direction of the wheel shaft, and the number of the mounting planes is two and the mounting planes are symmetrically arranged; the inner sleeve and the elastic gasket are sleeved on the axle shaft section with the installation plane, and the inner diameter shape of the inner sleeve and the inner diameter shape of the elastic gasket are matched with the axle shaft section, so that the rotation freedom degree of the inner sleeve and the elastic gasket is limited; and an expanding step is arranged at the terminal part of the mounting plane of the wheel shaft and is used for mounting and limiting the elastic gasket.
In the above technical scheme, a plurality of protruding elastic pieces are distributed on the elastic gasket along the circumference of the elastic gasket, the protruding elastic pieces are formed by punching on the elastic gasket body, and hollows are formed on the elastic gasket after punching, namely, each protruding elastic piece corresponds to one hollowing.
In the above technical scheme, the concave cavity corresponding to the position of the protruding elastic piece on the elastic washer is arranged on one surface of the shifting knob opposite to the elastic washer, when the protruding elastic piece of the elastic washer is completely placed in the concave cavity of the shifting knob, the shifting knob is in a state of being separated from teeth of the inner gear ring, when the chain drives the chain wheel sleeve to rotate, the chain wheel sleeve drives the shifting knob to rotate, and when the shifting knob rotates, the protruding elastic piece of the elastic washer is separated from the concave cavity of the shifting knob, and then the protruding elastic piece can promote the shifting knob to move towards the motor end disc.
In the above technical scheme, the inner end surface of the inner sleeve is provided with the groove corresponding to the position of the protruding elastic piece on the elastic gasket, so that when the protruding elastic piece on the elastic gasket is pressed towards the direction of the inner sleeve, the protruding elastic piece can enter the groove of the inner end surface of the inner sleeve.
In the above technical scheme, the teeth of the inner gear ring on the lateral end disc adopt unidirectional transmission teeth, each tooth comprises a first tooth surface and a second tooth surface, the included angle between the first tooth surface and the tooth root surface is smaller than or equal to 90 degrees, the included angle between the second tooth surface and the tooth root surface is larger than 120 degrees, when the poking teeth of the poking twists and the first tooth surface of the teeth of the inner gear ring act, the poking twists can be meshed with the teeth of the inner gear ring, the poking twists can drive the inner gear ring to rotate, when the poking twists and the second tooth surface of the teeth of the inner gear ring act, the second tooth surface and the poking teeth of the poking twists can not be meshed, and the poking twists can exit from the teeth along the second tooth surface.
In the technical scheme, the side end disc is fixedly arranged on the side face of the bicycle wheel.
In the above technical scheme, the side end plate is a motor end plate of an electric bicycle.
The operation method of the clutch type electric bicycle chain wheel driving mechanism comprises the following steps:
When a rider rides forwards, the chain drives the chain wheel sleeve to rotate forwards, the guide channel of the chain wheel sleeve can drive the poking button to rotate forwards, and the convex elastic sheet on the elastic gasket can drive the poking button to move towards the side end disc when the poking button rotates forwards, so that the poking button is meshed with teeth of the inner gear ring on the side end disc, and the side end disc is driven to rotate;
When a rider stops riding, the bicycle body continues to move forwards, at the moment, the lateral end disc rotates forwards along with the wheel, the second tooth surface of the tooth teeth of the inner gear ring of the lateral end disc can promote the poking teeth of the poking button to exit the tooth teeth along the second tooth surface, and therefore the sprocket sleeve cannot be driven to rotate;
when a rider steps on the pedals backwards, the chain drives the chain wheel sleeve to reversely rotate, at the moment, the guide channel of the chain wheel sleeve can drive the poking twists to reversely rotate, the convex elastic piece on the elastic washer can drive the poking twists to reversely move towards the side end disc during the poking twists reversely rotating, but because the poking teeth of the poking twists act with the second tooth surface of the teeth of the inner gear ring of the side end disc during the poking twists reversely rotating, the poking twists can not drive the side end disc to reversely move, but the second tooth surface of the teeth of the side end disc can promote the poking twists to withdraw from the teeth along the second tooth surface, and meanwhile the poking twists compress the convex elastic piece on the elastic washer.
The invention has the advantages and beneficial effects that:
1. the sprocket (sprocket sleeve) of the present invention does not risk the escape of the wire back-out.
2. The invention can only mesh with the motor wheel for transmission when the chain wheel (namely the chain wheel sleeve) is in a forward riding state, thereby greatly reducing the working time of the chain wheel and prolonging the service life of the chain wheel; and the running noise of the chain wheel is reduced, and the following rotation is avoided.
3. The sprocket (i.e. the sprocket sleeve) of the invention has no ratchet and pawl mechanism inside, thereby increasing the working stability and the service life of the sprocket.
And 4, the chain wheel is directly arranged on the wheel shaft, and compared with the traditional chain wheel which is arranged on the threaded opening of the motor end disc, the chain wheel has smaller inner diameter, so that the size of the chain wheel is reduced, and the design of the vehicle model is more attractive.
Drawings
Fig. 1 is a schematic perspective view of a clutch sprocket driving apparatus according to the present invention.
Fig. 2 is a cross-sectional view of the clutch sprocket drive apparatus of the present invention.
Fig. 3 is a schematic perspective view of the clutch sprocket drive apparatus of the present invention with motor end plates removed.
Fig. 4 is a schematic view of an elastic washer in the present invention.
Fig. 5 is a schematic view of a toggle in the present invention.
Fig. 6 is a schematic view of the inner sleeve and axle mounting of the clutch sprocket drive of the present invention.
FIG. 7 is a schematic view of the clutch sprocket drive of the present invention with an inner sleeve, axle, dial and motor end plate assembly.
Other relevant drawings may be made by those of ordinary skill in the art from the above figures without undue burden.
Detailed Description
In order to make the person skilled in the art better understand the solution of the present invention, the following describes the solution of the present invention with reference to specific embodiments.
Example 1
Referring to the drawings, a clutch type chain wheel driving device comprises a wheel shaft 1, a motor end disc 2, a chain wheel sleeve 3, an inner sleeve 4, an elastic washer 5 and a poking button 6.
The motor end disc 2 is rotatably arranged on the wheel shaft 1, the outer side end of the motor end disc is connected with the annular gear 2-1 through threads, the inner wall of the annular gear is provided with a ring of teeth a, or the annular gear and the motor end disc can be of an integrated structure without threaded connection.
The inner sleeve 4 is fixedly arranged on the wheel shaft 1, and the elastic washer 5 is fixedly arranged on the inner end surface of the inner sleeve (the inner end surface of the inner sleeve refers to the surface of the inner sleeve facing the motor end disc).
The poking button 6 is movably sleeved on the wheel shaft 1 and is arranged at the inner side of the elastic gasket 5 (the inner side of the elastic gasket is the side of the elastic gasket facing the motor end disc direction), two poking teeth 6-1 are arranged on the poking button 6, and when the poking button 6 moves to a certain distance along the wheel shaft direction towards the motor end disc direction, the poking teeth 6-1 of the poking button 6 can be meshed with the teeth a of the inner gear ring of the motor end disc.
The sprocket sleeve 3 is installed on the inner sleeve 4 through a bearing 7, and can freely rotate on the inner sleeve 4, and the structure of the sprocket sleeve 3 is as follows: one end of the outer side of the chain wheel sleeve 3 is provided with a chain wheel 3-1 for connecting with a chain; one end of the inner side of the chain wheel sleeve 3 is provided with a circle of cylinder 3-2, the diameter of the cylinder is larger than that of the elastic washer and smaller than the inner diameter of the inner gear ring on the motor end disc 2, the wall of the cylinder 3-2 is provided with a guide channel 3-21 matched with the poking teeth 6-1 of the poking torsion 6, and the poking teeth of the poking torsion 6 are positioned in the guide channel; further, a ring flange 3-3 is arranged on the wall of the chain wheel sleeve 3, and is positioned on the outer end face of the inner gear ring 2-1 on the motor end disc 2, and is in clearance fit with the outer end face of the inner gear ring, so that dynamic seal is formed, and external dust is placed in the gap.
Further, an outer end disc 8 is arranged at the outer side end of the sprocket sleeve 3 and the inner sleeve 4, and is sleeved on the wheel shaft 1 through threads, so as to realize the outer side positioning of the sprocket sleeve 3 and the inner sleeve 4.
Further, threads are arranged on the outer shaft section of the wheel shaft 1 and used for installing the outer end disc 8, and installing planes 1-1 are milled on the wheel shaft along the axial direction of the wheel shaft, and the number of the installing planes is two and are symmetrically arranged; the inner sleeve 4 and the elastic washer 5 are sleeved on the axle shaft section with the installation plane, and the inner diameter shape of the inner sleeve 4 and the inner diameter shape of the elastic washer 5 are matched with the axle shaft section, so that the rotation freedom degree of the inner sleeve and the elastic washer is limited, and the inner sleeve and the elastic washer cannot rotate relative to the axle; the end part of the installation plane of the wheel axle is provided with an expanding step 1-2, the expanding step is used for installing and limiting the elastic gasket 5, namely, after the inner sleeve and the elastic gasket are sleeved on the wheel axle section with the installation plane, the outer end disc 8 is spirally installed into the wheel axle, so that the elastic gasket 5 is tightly propped against the expanding step 1-2, and the outer end disc 8 is tightly propped against the inner sleeve 4, thereby realizing the fixed installation of the inner sleeve, the elastic gasket and the wheel axle.
Further, referring to fig. 4, a plurality of protruding elastic pieces 5-1 are distributed on the elastic washer 5 along the circumference thereof, the protruding elastic pieces are formed by punching on the elastic washer body, and after punching, hollows are formed on the elastic washer, that is, each protruding elastic piece corresponds to one hollowness.
Further, referring to fig. 5, a concave cavity 6-2 corresponding to the position of the protruding elastic piece 5-1 on the elastic washer is provided on the opposite side of the shifting knob 6 to the elastic washer 5, when the protruding elastic piece 5-1 of the elastic washer 5 is completely placed in the concave cavity 6-2 of the shifting knob 6, the shifting knob is in a separated state with the tooth a of the inner gear ring, when the chain drives the sprocket sleeve 3 to rotate, the sprocket sleeve 3 drives the shifting knob 6 to rotate, and when the shifting knob 6 rotates, the protruding elastic piece 5-1 of the elastic washer 5 is separated from the concave cavity 6-2 of the shifting knob 6, and then the protruding elastic piece 5-1 can drive the shifting knob 6 to move towards the motor end disc.
Further, referring to fig. 6, the inner end surface of the inner sleeve 4 is provided with a groove 4-1 corresponding to the position of the raised elastic piece on the elastic washer, so that the raised elastic piece on the elastic washer can enter the groove 4-1 of the inner end surface of the inner sleeve when the raised elastic piece 5-1 is pressed toward the inner sleeve 4.
Further, referring to fig. 7, teeth a of the inner gear ring on the motor end disc adopt unidirectional transmission teeth, each tooth comprises a first tooth surface and a second tooth surface, an included angle between the first tooth surface and the tooth root surface is smaller than or equal to 90 degrees, an included angle between the second tooth surface and the tooth root surface is larger than 120 degrees, when a poking tooth of the poking button 6 acts on the first tooth surface of the teeth of the inner gear ring, the poking tooth can be meshed with the teeth of the inner gear ring, the poking button 6 can drive the inner gear ring to rotate, when a poking tooth of the poking button 6 acts on the second tooth surface of the teeth of the inner gear ring, the second tooth surface cannot mesh with the poking tooth, and the poking tooth of the poking button 6 can exit from the teeth along the second tooth surface.
The operation method of the clutch type chain wheel driving device is as follows:
When a rider rides forward, when the chain drives the sprocket sleeve 3 to run forward, the guide channel of the sprocket sleeve 3 can drive the poking button 6 to rotate forward, and when the poking button 6 rotates, the convex elastic piece on the elastic gasket 5 can drive the poking button 6 to move towards the motor end disc, so that the poking button 6 is meshed with the tooth a of the inner gear ring on the motor end disc 2, and the motor end disc 2 is driven to rotate.
When the rider stops riding, the bicycle body continues to move forwards, at the moment, the motor end disc 2 rotates forwards, the second tooth surface of the tooth teeth of the inner gear ring of the motor end disc 2 can promote the shifting teeth of the shifting knob 6 to withdraw from the tooth teeth along the second tooth surface, and therefore the sprocket sleeve 3 cannot be driven to rotate.
When a rider steps on the pedals backwards, the chain drives the sprocket sleeve to reversely rotate, at the moment, the guide channel of the sprocket sleeve 3 can drive the poking button 6 to reversely rotate, the convex elastic piece on the elastic gasket can drive the poking button 6 to reversely move towards the motor end disc when the poking button 6 reversely rotates, but because the poking teeth of the poking button 6 act with the second tooth surface of the teeth of the inner gear ring of the motor end disc 2 when the poking button 6 reversely rotates, the poking button 6 can not drive the motor end disc to reversely move, but the second tooth surface of the teeth of the motor end disc can promote the poking teeth of the poking button 6 to withdraw from the teeth along the second tooth surface, and meanwhile, the poking button 6 compresses the convex elastic piece on the elastic gasket (the convex elastic piece enters the groove 4-1 of the inner end surface of the inner sleeve).
Example two
An embodiment one is directed to electric bicycle, and this device also can be applied to bicycle technical field, and is different with embodiment one in that: the motor end disc 2 in the first embodiment is replaced by a side end disc, the side end disc is arranged on the side surface of the bicycle wheel, the outer side end of the side end disc is also provided with an annular gear, the inner wall of the annular gear is also provided with a ring of teeth, and the rest structure and the working principle are the same as those of the first embodiment.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature's illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "under" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "lower" may encompass both an upper and lower orientation. The device may be otherwise positioned (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second", and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The foregoing has described exemplary embodiments of the invention, it being understood that any simple variations, modifications, or other equivalent arrangements which would not unduly obscure the invention may be made by those skilled in the art without departing from the spirit of the invention.
Claims (5)
1. A clutch sprocket drive apparatus, characterized in that: comprises a wheel axle, a side end disc, a chain wheel sleeve, an inner sleeve, an elastic washer and a poking button;
The side end disc is rotatably arranged on the wheel shaft, and teeth are arranged on the side end disc;
the inner sleeve is fixedly arranged on the wheel shaft, and the elastic washer is fixedly arranged on the inner end surface of the inner sleeve;
The shifting button is movably sleeved on the wheel shaft and is arranged on the inner side of the elastic washer, a shifting tooth is arranged on the shifting button, and when the shifting button moves towards the side end disc, the shifting tooth of the shifting button can be meshed with the tooth on the side end disc;
the chain wheel sleeve is arranged on the inner sleeve through a bearing, and one end of the outer side of the chain wheel sleeve is provided with a chain wheel for being connected with a chain; one end of the inner side of the chain wheel sleeve is provided with a circle of cylinder, the wall of the cylinder is provided with a guide channel matched with the poking teeth of the poking button, and the poking teeth of the poking button are positioned in the guide channel;
The chain wheel sleeve is characterized in that a ring flange is further arranged on the wall of the chain wheel sleeve, an inner gear ring is arranged at the outer side end of the side end disc, teeth are arranged on the inner wall of the inner gear ring, and the flange on the wall of the chain wheel sleeve is positioned on the outer end face of the inner gear ring on the side end disc and is in clearance fit with the outer end face of the inner gear ring to form dynamic seal;
The elastic gasket is characterized in that a plurality of protruding elastic sheets are distributed on the circumference of the elastic gasket, the protruding elastic sheets are formed by punching on an elastic gasket entity, and hollow-out parts are formed on the elastic gasket after punching;
A concave cavity corresponding to the position of the convex elastic sheet on the elastic washer is arranged on one surface of the shifting knob opposite to the elastic washer, when the convex elastic sheet of the elastic washer is completely placed in the concave cavity of the shifting knob, the shifting knob is in a state of being separated from the teeth, when the chain drives the chain wheel sleeve to rotate, the chain wheel sleeve further drives the shifting knob to rotate, and when the shifting knob rotates, the convex elastic sheet of the elastic washer is separated from the concave cavity of the shifting knob, and then the convex elastic sheet can promote the shifting knob to move towards the motor end disc;
The inner end surface of the inner sleeve is provided with a groove corresponding to the position of the convex elastic sheet on the elastic gasket, and when the convex elastic sheet on the elastic gasket is pressed towards the direction of the inner sleeve, the convex elastic sheet can enter the groove of the inner end surface of the inner sleeve;
The tooth on the lateral part end plate adopts one-way transmission tooth, and every tooth includes first flank of tooth and second flank of tooth, and first flank of tooth is less than or equal to 90 degrees with the contained angle of tooth flank, and the contained angle of second flank of tooth is greater than 120 degrees with the tooth flank, and when the first flank of tooth acts on, the tooth can be meshed with the tooth of dialling the button, and the side part end plate rotation can be driven to the dialling button, and when the tooth second flank of tooth acts on of dialling the button and lateral part end plate, the second flank of tooth can not mesh with dialling the tooth, and the tooth of dialling the button can be followed the second flank of tooth and withdraw from the tooth.
2. The clutched sprocket drive of claim 1, wherein: the outer end of the chain wheel sleeve and the inner sleeve is provided with an outer end disc which is sleeved on the wheel shaft through threads and used for realizing the outer positioning of the chain wheel sleeve and the inner sleeve.
3. The clutched sprocket drive of claim 1, wherein: the wheel shaft is milled with two mounting planes along the axial direction of the wheel shaft, and the number of the mounting planes is two and the mounting planes are symmetrically arranged; the inner sleeve and the elastic gasket are sleeved on the axle shaft section with the installation plane, and the inner diameter shape of the inner sleeve and the inner diameter shape of the elastic gasket are matched with the axle shaft section, so that the rotation freedom degree of the inner sleeve and the elastic gasket is limited; and an expanding step is arranged at the terminal part of the mounting plane of the wheel shaft and is used for mounting and limiting the elastic gasket.
4. The clutched sprocket drive of claim 1, wherein: the side end disc is fixedly arranged on the side face of a bicycle wheel or is a motor end disc of an electric bicycle.
5. The method of operating a clutch sprocket drive as set forth in one of claims 1-4, wherein:
When a rider rides forward, the chain drives the chain wheel sleeve to rotate forward, the guide channel of the chain wheel sleeve can drive the shifting knob to rotate forward, and the convex elastic sheet on the elastic gasket can drive the shifting knob to move towards the side end disc when the shifting Niu Zhengxiang rotates, so that the shifting knob is meshed with teeth on the side end disc, and the side end disc is driven to rotate;
When a rider stops riding, the bicycle body continues to move forwards, at the moment, the lateral end disc rotates forwards along with the wheel, and the second tooth surface of the tooth of the lateral end disc can promote the shifting teeth of the shifting button to withdraw from the tooth along the second tooth surface, so that the sprocket sleeve cannot be driven to rotate;
When a rider steps on the pedals backwards, the chain drives the chain wheel sleeve to reversely rotate, at the moment, the guide channel of the chain wheel sleeve can drive the shifting knob to reversely rotate, the convex elastic piece on the elastic washer can drive the shifting knob to reversely move towards the side end disc during reverse rotation of the shifting knob, but because the shifting teeth of the shifting knob act with the second tooth surface of the tooth teeth of the side end disc during reverse rotation of the shifting knob, the shifting knob can not drive the side end disc to reversely move, but the second tooth surface of the tooth teeth of the side end disc can promote the shifting teeth of the shifting knob to withdraw from the tooth teeth along the second tooth surface, and meanwhile, the shifting knob compresses the convex elastic piece on the elastic washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010745079.6A CN111776128B (en) | 2020-07-29 | 2020-07-29 | Clutch type chain wheel driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010745079.6A CN111776128B (en) | 2020-07-29 | 2020-07-29 | Clutch type chain wheel driving device |
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| Publication Number | Publication Date |
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| CN111776128A CN111776128A (en) | 2020-10-16 |
| CN111776128B true CN111776128B (en) | 2024-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010745079.6A Active CN111776128B (en) | 2020-07-29 | 2020-07-29 | Clutch type chain wheel driving device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113247169B (en) * | 2021-06-11 | 2022-09-30 | 天津美派电动科技有限公司 | Switch type chain wheel driving mechanism |
| CN113530993B (en) * | 2021-08-11 | 2022-09-16 | 河北扶波机械制造有限公司 | Small-sized pulling type vehicle clutch and small-sized pulling type road surface thermal regeneration vehicle |
| CN114104182B (en) * | 2021-10-25 | 2023-06-30 | 天津美派电动科技有限公司 | Sprocket driving mechanism and using method thereof |
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| CN111409760A (en) * | 2020-05-11 | 2020-07-14 | 天津美派电动科技有限公司 | Clutch type electric bicycle chain wheel driving mechanism |
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| CN2254862Y (en) * | 1996-02-17 | 1997-05-28 | 朱志刚 | Bicycle active steering handle-bar with means able to lock bicycle vertically |
| WO2009079901A1 (en) * | 2007-12-24 | 2009-07-02 | Foster Assets Corporation | Electrically power assisting bicycle with combined power unit and transmission device thereof |
| CN111409760A (en) * | 2020-05-11 | 2020-07-14 | 天津美派电动科技有限公司 | Clutch type electric bicycle chain wheel driving mechanism |
| CN212423372U (en) * | 2020-07-29 | 2021-01-29 | 天津美派电动科技有限公司 | Clutch type chain wheel driving device |
| CN113187831A (en) * | 2021-05-26 | 2021-07-30 | 天津美派电动科技有限公司 | Clutch type chain wheel driving mechanism |
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