CN113247169A - Switch type chain wheel driving mechanism - Google Patents
Switch type chain wheel driving mechanism Download PDFInfo
- Publication number
- CN113247169A CN113247169A CN202110655619.6A CN202110655619A CN113247169A CN 113247169 A CN113247169 A CN 113247169A CN 202110655619 A CN202110655619 A CN 202110655619A CN 113247169 A CN113247169 A CN 113247169A
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- Prior art keywords
- sleeve
- pawl
- elastic switch
- switch
- elastic
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- 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
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- 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
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/60—Rider propelled cycles with auxiliary electric motor power-driven at axle parts
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- 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
- B62M7/00—Motorcycles characterised by position of motor or engine
- B62M7/12—Motorcycles characterised by position of motor or engine with the engine beside or within the driven wheel
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a switching type chain wheel driving mechanism, which comprises a motor end disc, a chain wheel, an internal fixed sleeve, a driving sleeve and an elastic switch, wherein the motor end disc is fixed on the inner side of the chain wheel; the outer side end of the motor end disc is provided with an inner gear ring, an inner fixing sleeve is fixedly arranged on the wheel shaft, a driving sleeve is rotatably sleeved on the inner fixing sleeve, and a chain wheel is fixedly sleeved on the driving sleeve; the driving sleeve is provided with a pawl which is matched with teeth of an inner gear ring on a motor end disc, the elastic switch is arranged on the driving sleeve and used for controlling the rising and pressing states of the pawl on the driving sleeve, and the inner fixed sleeve is provided with a top contact part used for driving the elastic switch; in a riding state, the top contact part can drive the elastic switch to be opened outwards, so that the pawl on the driving sleeve loses the limiting effect of the elastic switch and is lifted to be in contact with the teeth of the inner gear ring; under the non-riding state, the elastic switch limits the pawl in a pressing state, so that the pawl is separated from the inner gear ring of the motor end plate.
Description
Technical Field
The invention belongs to the technical field of electric bicycles and bicycles, and particularly relates to a switch type chain wheel driving mechanism.
Background
Referring to the attached drawings 1 and 2, the conventional rear wheel driving structure of an electric bicycle is that a motor wheel is mounted on a rear wheel shaft a, a motor end disc b of the motor wheel is provided with a threaded hole b-1 for mounting a flywheel (namely a chain wheel), a flywheel c is mounted on the threaded hole through threads to be fixedly mounted with the motor wheel, a circle of teeth is arranged on an outer ring of the flywheel so that the outer ring of the flywheel is linked with a crank wheel disc through a chain to realize chain transmission, and a ratchet and pawl structure is adopted in the flywheel to ensure unidirectional transmission of riding, and the flywheel driving structure has the following problems: 1. the flywheel runs along with the motor wheel all the time, the working time of the flywheel is greatly prolonged, and the ratchet wheel and pawl structure in the flywheel is arranged to ensure the one-way transmission of riding, so that the ratchet wheel and pawl structure in the flywheel is easy to damage, and the service life of the flywheel is short. 2. After the flywheel is aged for long-time work, the condition of crank follow-up rotation easily occurs (when a motor wheel operates, the inner aging friction force of the flywheel is increased, the outer ring of the flywheel can be driven to rotate, then the outer ring of the flywheel drives a chain to rotate, and the chain drives the crank to follow-up rotation), the crank follow-up rotation can cause a power-assisted sensor of the vehicle to send a power-assisted signal to a controller, the controller mistakenly uses a power-assisted function for a client, the runaway is caused, and hidden dangers are brought to the safety of the client during traveling. 3. After the flywheel works and ages for a long time, when the motor wheel drives the flywheel to operate, large noise can be generated.
Patent No. CN212423372U discloses a clutch type sprocket driving mechanism, which comprises an axle, a side end disc, a sprocket sleeve, an inner sleeve, an elastic washer and a toggle; 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 knob is movably sleeved on the wheel shaft and is arranged on the inner side of the elastic washer, shifting teeth are arranged on the shifting knob, and when the shifting knob moves towards the side end plate, the shifting teeth of the shifting knob can be meshed with the teeth on the side end plate; 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 which is used for being connected with a chain; one end of the inner side of the chain wheel sleeve is provided with a circle of cylinder, a guide channel matched with the shifting teeth of the shifting knob is arranged on the cylinder wall of the cylinder, and the shifting teeth of the shifting knob are positioned in the guide channel. When a rider rides forward, when the chain drives the chain sleeve to rotate in the forward direction, the guide channel of the chain sleeve can drive the shifting knob to rotate in the forward direction, and when the shifting knob rotates in the forward direction, the raised elastic sheet on the elastic washer can drive the shifting knob to move towards the side end disc, so that the shifting knob is meshed with teeth of the inner gear ring on the side end disc, and the side end disc is driven to rotate; when the rider stops riding, the bicycle body continues to move forwards, the side end disc rotates forwards along with the bicycle wheel, and the second tooth surface of the tooth of the annular gear of the side end disc can drive the shifting teeth of the shifting knob to retreat out of the tooth along the second tooth surface, so that the sprocket sleeve cannot be driven to rotate; when the pedal is trampled backwards by a rider, the chain drives the chain wheel sleeve to run reversely, the guide channel of the chain wheel sleeve can drive the shifting knob to rotate reversely, the raised elastic sheet on the elastic washer can drive the shifting knob to move reversely to the side end disc when the shifting knob rotates reversely, however, when the shifting knob rotates reversely, the shifting teeth of the shifting knob are acted on the second tooth surfaces of the teeth of the inner gear ring of the side end disc, therefore, the shifting knob can not drive the reverse movement of the side end disc, but the second tooth surfaces of the teeth of the side end disc can make the shifting teeth of the shifting knob to retreat from the teeth along the second tooth surfaces, and the shifting knob compresses the raised elastic sheet on the elastic washer.
Although the clutch type chain wheel driving mechanism solves the problem that the flywheel always runs along with the motor wheel, the structure of the clutch type chain wheel driving mechanism is too complex, and the operation is not stable enough.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a switching type chain wheel driving mechanism.
The invention is realized by the following technical scheme:
a switch type chain wheel driving mechanism comprises a motor end disc, a chain wheel, an internal fixed sleeve, a driving sleeve and an elastic switch;
the motor end disc is installed on the wheel shaft, an inner gear ring is arranged at the outer side end of the motor end disc, the inner fixing sleeve is fixedly installed on the wheel shaft, the driving sleeve is rotatably sleeved on the inner fixing sleeve, and the chain wheel is fixedly sleeved on the driving sleeve;
a pawl is arranged on the driving sleeve and matched with teeth of an inner gear ring on the end disc of the motor to form a pawl and ratchet matching structure;
the elastic switch is arranged on the driving sleeve and used for controlling the lifting and pressing states of the pawl on the driving sleeve.
In the technical scheme, a top contact part for driving the elastic switch is arranged on the inner fixed sleeve; in a riding state, the top contact part can drive the elastic switch to be opened outwards (namely to be opened towards the direction of a motor end plate), so that the pawl on the driving sleeve loses the limiting effect of the elastic switch and is lifted to be in contact with teeth of the inner gear ring; under the non-riding state, the elastic switch limits the pawl in a pressing state, so that the pawl is separated from the inner gear ring of the motor end plate.
In the technical scheme, the elastic switch is provided with a limiting piece which can cut into a space between the pawl and the inner gear ring from the side and limit the pawl in a pressing state.
In the technical scheme, the tail part of the elastic switch is provided with a buckle part, the head part of the elastic switch is provided with a limiting piece and a triggering piece, and the middle part of the elastic switch is provided with an elastic piece; the driving sleeve is provided with a clamping groove, a buckling part of the elastic switch is fixedly clamped in the clamping groove of the driving sleeve, a limiting sheet at the head position of the elastic switch is aligned to a pawl part of the driving sleeve, and the limiting sheet can transversely cut into a space between the pawl and the inner gear ring under the elastic action of the elastic sheet in a non-riding state to limit the pawl in a pressing state, so that the pawl is completely separated from teeth of the inner gear ring on the motor end disc; be provided with on the internal fixation sleeve with elastic switch's trigger piece complex top portion of touching, when the drive sleeve rotates, elastic switch can rotate along with the drive sleeve is synchronous, at the rotation in-process, the top portion of touching on the internal fixation sleeve can push up the trigger piece that touches elastic switch to impel elastic switch's head to the outward movement, make the spacing piece of elastic switch head transversely break away from drive sleeve's pawl, the pawl loses the spacing effect of spacing piece after lift up with the tooth cooperation of the ring gear on the motor end dish.
In the technical scheme, the top contact parts are in a shape protruding towards the motor end disc, the number of the top contact parts is multiple, and the top contact parts are distributed on the inner fixing sleeve at equal intervals along the circumference.
In the above technical scheme, the elastic switch is of an integrated structure, that is, the buckling part, the limiting piece, the triggering piece and the elastic piece of the elastic switch are processed by one metal sheet.
In the technical scheme, the outer end disc is arranged at the outer ends of the inner fixing sleeve and the driving sleeve and is connected with the inner fixing sleeve through threads.
In the technical scheme, at least one positioning groove is arranged on the outer wall of the driving sleeve, and a positioning boss corresponding to the positioning groove is arranged on the inner wall of the chain wheel and used for fixedly sleeving the chain wheel on the driving sleeve.
In the technical scheme, the outer edge of the limiting sheet of the elastic switch, which is opposite to the pawl, is provided with a section of inclined guide edge, so that the limiting sheet can be conveniently and transversely cut between the pawl and the inner gear ring; the outer end face of the trigger piece of the elastic switch, which is opposite to the top contact part on the inner fixing sleeve, is an arc-shaped face so as to increase the contact smoothness of the top contact part and the trigger piece.
The present invention also provides an electric bicycle including the above switch type chain wheel driving mechanism.
The invention has the advantages and beneficial effects that:
the switch type chain wheel driving mechanism is simple in structure and reasonable in design, and realizes that the pawls on the driving sleeve are in transmission engagement with the inner gear ring on the motor end disc only in a forward riding state to drive the motor wheel to run. Compared with the prior art, the technical scheme of the invention greatly reduces the working time of the pawl, prolongs the service life of the mechanism, reduces the running noise of the chain wheel driving mechanism and effectively avoids the condition of crank follow-up rotation.
In addition, the chain wheel is directly arranged on the wheel shaft, and compared with the traditional chain wheel which is arranged on a threaded opening of the motor end disc, the chain wheel has smaller inner diameter, so that the size of the chain wheel is favorably reduced, the design of a vehicle is more attractive, and the risk of chain wheel wire withdrawing is avoided.
Drawings
Fig. 1 is a schematic structural view of a rear wheel drive structure of a related art electric bicycle (a state where a flywheel is not mounted).
Fig. 2 is a schematic structural view of a rear wheel driving structure of an electric bicycle in the prior art.
Fig. 3 is a sectional view of the switching type sprocket driving mechanism of the present invention.
Fig. 4 is a schematic structural view of the switching type sprocket driving mechanism of the present invention.
FIG. 5 is a schematic view of the mounting arrangement of the sprocket, inner fixing sleeve and drive sleeve of the present invention.
FIG. 6 is a schematic view of the mounting arrangement of the sprocket and the inner fixing sleeve of the present invention.
Fig. 7 is a perspective view of the elastic switch according to the present invention.
Fig. 8 is a perspective view of the elastic switch according to the present invention.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the present invention is further described below with reference to specific examples.
Referring to fig. 3-8, a switching type sprocket driving mechanism comprises a motor end plate 1, a sprocket 2, an internal fixed sleeve 3, a driving sleeve 4 and an elastic switch 5.
The motor end disc 1 is arranged on the wheel shaft, an inner gear ring 1-1 is arranged at the outer side end of the motor end disc, a ring of teeth 1-2 is arranged on the inner wall of the inner gear ring, or the inner gear ring and the motor end disc can be of an integrated structure or a split connection structure.
The inner fixing sleeve 3 is fixedly arranged on the wheel shaft, the inner wall of the inner fixing sleeve 3 is provided with two planes 3-1 which are symmetrically arranged, and the wheel shaft is correspondingly milled with the planes, so that the inner fixing sleeve 3 and the wheel shaft cannot rotate relatively.
The driving sleeve 4 is rotatably sleeved on the inner fixed sleeve 3 through a bearing, and the chain wheel 2 is fixedly sleeved on the driving sleeve 4; a pawl 4-1 is arranged on the driving sleeve 4, and the pawl 4-1 is matched with teeth 1-2 of an inner gear ring 1-1 on the motor end disc 1 to form a pawl and ratchet matching structure; when the chain wheel 2 rotates forwards (in the riding direction), the driving sleeve 4 is synchronously driven to rotate, and then the pawl 4-1 on the driving sleeve 4 drives the motor end plate 1 to rotate forwards.
The elastic switch 5 is used for controlling the rising and pressing states of a pawl 4-1 on the driving sleeve 4, concretely, referring to the attached drawings 7-8, the tail part of the elastic switch 5 is provided with a buckling part 5-1, the head part of the elastic switch 5 is provided with a limiting sheet 5-2 and a triggering sheet 5-3, and the middle part of the elastic switch 5 is provided with an elastic sheet 5-4; a clamping groove 4-2 is formed in the driving sleeve 4, a clamping part 5-1 of the elastic switch 5 is fixedly clamped in the clamping groove 4-2 of the driving sleeve 4, a limiting sheet 5-2 at the head position of the elastic switch 5 is aligned to a pawl 4-1 part of the driving sleeve 4, and in a non-riding state, the limiting sheet 5-2 can transversely cut into a space between the pawl 4-1 and the inner gear ring under the elastic action of the elastic sheet 5-4 to limit the pawl 4-1 in a downward pressing state, so that the pawl is completely separated from teeth 1-2 of the inner gear ring 1-1 on the motor end disc 1; the inner fixed sleeve 3 is provided with a top contact part 3-2 matched with a trigger piece 5-3 of the elastic switch 5, the top contact part is in a shape protruding towards the direction of a motor end plate (for example, the top contact part is in a semi-cylindrical shape), the number of the top contact parts is a plurality of, the top contact parts are distributed on the inner fixed sleeve 3 at equal intervals along the circumference, when the driving sleeve 4 rotates, the elastic switch 5 can synchronously rotate along with the driving sleeve 4, in the rotating process, the top contact part 3-2 on the inner fixed sleeve 3 can push the trigger piece 5-3 of the elastic switch 5, thereby the head of the elastic switch 5 is driven to move outwards, the limiting piece 5-2 at the head of the elastic switch 5 is transversely separated from the pawl 4-1 of the driving sleeve 4, and the pawl 4-1 is lifted to be matched with the teeth 1-2 of the inner gear ring 1-1 on the motor end disc 1 after losing the limiting function of the limiting piece 5-2.
Furthermore, the elastic switch 5 is of an integrated structure, namely, a buckling part 5-1, a limiting sheet 5-2, a triggering sheet 5-3 and an elastic sheet 5-4 of the elastic switch are formed by bending and processing a metal sheet.
Further, referring to fig. 8, the outer edge of the limiting sheet 5-2 of the elastic switch 5 opposite to the pawl 4-1 is provided with a section of inclined guide edge 5-21, so that the limiting sheet 5-2 can be smoothly and transversely cut into the space between the pawl 4-1 and the inner gear ring.
Further, referring to fig. 8, the outer end surface of the trigger piece 5-3 of the elastic switch 5 opposite to the top contact portion 3-2 on the inner fixing sleeve 3 is an arc surface to increase the contact smoothness between the top contact portion 3-2 and the trigger piece 5-3.
Furthermore, an outer end disk 6 is provided at the outer ends of the inner fixing sleeve 3 and the drive sleeve 4, which outer end disk 6 is connected to the inner fixing sleeve 3 by means of a thread.
Furthermore, the outer wall of the driving sleeve 4 is provided with at least one positioning groove 4-3, and the inner wall of the chain wheel 2 is provided with a positioning boss 2-1 corresponding to the positioning groove 4-3, so as to realize that the chain wheel 2 is fixedly sleeved on the driving sleeve 4.
The operation method of the switch type chain wheel driving mechanism comprises the following steps:
when a rider rides forward, the chain drives the chain wheel 2 to rotate in the forward direction, the chain wheel 2 synchronously drives the driving sleeve 4 to rotate, the elastic switch 5 can synchronously rotate along with the driving sleeve 4 when the driving sleeve 4 rotates, the abutting part on the internal fixing sleeve 3 can abut against the triggering piece 5-3 of the elastic switch 5 in the rotating process, so that the head of the elastic switch 5 moves outwards, the limiting piece 5-2 at the head of the elastic switch 5 is transversely separated from the pawl 4-1 of the driving sleeve 4, the pawl 4-1 is lifted up to be engaged with the teeth 1-2 of the inner gear ring 1-1 on the motor end disc 1 after losing the limiting function of the limiting piece 5-2, and the pawl 4-1 drives the motor end disc 1 to rotate. It should be noted that, since the pawl 4-1 drives the motor end plate 1 to rotate when riding, at this time, the pawl 4-1 can generate larger jacking force to the teeth 1-2 of the inner gear ring 1-1 of the motor end disc, under the action of the top-touch force, the pawl 4-1 can stably maintain the engagement state with the teeth 1-2, and therefore, even under the action of the elastic force of the elastic switch 5, the limiting piece 5-2 of the elastic switch 5 cannot cut into the pawl 4-1 to press the pawl 4-1 downwards (it can be understood that under the action of the jacking touch force, the friction force between the contact surfaces of the pawl 4-1 and the teeth 1-2 is greater than the elastic force of the elastic switch 5, so that the limiting piece 5-2 of the elastic switch 5 cannot cut into the pawl 4-1 to press the pawl 4-1 downwards).
When a rider stops riding, the driving sleeve 4 stops rotating, the bicycle body continues to move forwards, the motor end disc 2 rotates forwards, teeth 1-2 of the inner gear ring of the motor end disc 2 press the pawl 4-1 on the driving sleeve 4 downwards, at the moment, under the elastic force action of the elastic switch 5, the limiting piece 5-2 of the elastic switch 5 transversely cuts into the space between the pawl 4-1 and the inner gear ring, the pawl 4-1 is limited in a pressing-down state, and the pawl is completely separated from the teeth 1-2 of the inner gear ring 1-1 on the motor end disc 1.
When a rider treads a pedal backwards, the chain drives the chain wheel to run reversely, the chain wheel drives the driving sleeve 4 to rotate reversely, at the moment, the abutting part on the inner fixing sleeve 3 also abuts against the triggering piece 5-3 of the elastic switch 5 to enable the head of the elastic switch 5 to move outwards, the limiting piece 5-2 at the head of the elastic switch 5 is transversely separated from the pawl 4-1 of the driving sleeve 4, the pawl 4-1 loses the limiting function of the limiting piece 5-2 and then lifts up to be in contact with the teeth 1-2 of the inner gear ring 1-1 on the motor end disc 1, but because the driving sleeve 4 rotates reversely, the teeth 1-2 of the inner gear ring of the motor end disc 2 press down the pawl 4-1 on the driving sleeve 4 in the reverse rotation process of the driving sleeve 4, and the driving sleeve 4 can rotate reversely.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (10)
1. A switch type chain wheel driving mechanism is characterized in that: comprises a motor end disc, a chain wheel, an internal fixed sleeve, a driving sleeve and an elastic switch;
the motor end disc is installed on the wheel shaft, an inner gear ring is arranged at the outer side end of the motor end disc, the inner fixing sleeve is fixedly installed on the wheel shaft, the driving sleeve is rotatably sleeved on the inner fixing sleeve, and the chain wheel is fixedly sleeved on the driving sleeve;
a pawl is arranged on the driving sleeve and matched with teeth of an inner gear ring on the end disc of the motor to form a pawl and ratchet matching structure;
the elastic switch is arranged on the driving sleeve and used for controlling the lifting and pressing states of the pawl on the driving sleeve.
2. The switch mode sprocket drive mechanism of claim 1, wherein: the inner fixed sleeve is provided with a top contact part for driving the elastic switch.
3. The switch mode sprocket drive mechanism of claim 2, wherein: in a riding state, the top contact part can drive the elastic switch to be opened, so that the pawl on the driving sleeve loses the limiting effect of the elastic switch and lifts up to be in contact with the teeth of the inner gear ring; under the non-riding state, the elastic switch limits the pawl in a pressing state, so that the pawl is separated from the inner gear ring of the motor end plate.
4. The switch mode sprocket drive mechanism of claim 1, wherein: the elastic switch is provided with a limiting sheet which can cut into a space between the pawl and the inner gear ring from the side and limit the pawl in a pressing state.
5. The switch mode sprocket drive mechanism of claim 1, wherein: the tail part of the elastic switch is provided with a buckle part, the head part of the elastic switch is provided with a limiting sheet and a triggering sheet, and the middle part of the elastic switch is provided with an elastic sheet; the driving sleeve is provided with a clamping groove, a buckling part of the elastic switch is fixedly clamped in the clamping groove of the driving sleeve, a limiting sheet at the head position of the elastic switch is aligned to a pawl part of the driving sleeve, and the limiting sheet can transversely cut into a space between the pawl and the inner gear ring under the elastic action of the elastic sheet in a non-riding state to limit the pawl in a pressing state, so that the pawl is completely separated from teeth of the inner gear ring on the motor end disc; be provided with on the internal fixation sleeve with elastic switch's trigger piece complex top portion of touching, when the drive sleeve rotates, elastic switch can rotate along with the drive sleeve is synchronous, at the rotation in-process, the top portion of touching on the internal fixation sleeve can push up the trigger piece that touches elastic switch to impel elastic switch's head to the outward movement, make the spacing piece of elastic switch head transversely break away from drive sleeve's pawl, the pawl loses the spacing effect of spacing piece after lift up with the tooth cooperation of the ring gear on the motor end dish.
6. The switch mode sprocket drive mechanism of claim 2, wherein: the top contact parts are in a shape protruding towards the motor end disc, the number of the top contact parts is multiple, and the top contact parts are distributed on the inner fixing sleeve at equal intervals along the circumference.
7. The switch mode sprocket drive mechanism of claim 5, wherein: the elastic switch is of an integrated structure.
8. The switch mode sprocket drive mechanism of claim 1, wherein: and an outer end disc is arranged at the outer side ends of the inner fixing sleeve and the driving sleeve and is connected with the inner fixing sleeve through threads.
9. The switch mode sprocket drive mechanism of claim 5, wherein: the outer edge of the limiting sheet of the elastic switch, which is opposite to the pawl, is provided with a section of inclined guide edge; the outer end face of the trigger piece of the elastic switch, which is opposite to the top contact part on the inner fixing sleeve, is an arc-shaped face.
10. An electric bicycle, characterized in that: the electric bicycle comprises a switched sprocket drive according to any of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110655619.6A CN113247169B (en) | 2021-06-11 | 2021-06-11 | Switch type chain wheel driving mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110655619.6A CN113247169B (en) | 2021-06-11 | 2021-06-11 | Switch type chain wheel driving mechanism |
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| CN113247169A true CN113247169A (en) | 2021-08-13 |
| CN113247169B CN113247169B (en) | 2022-09-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114104182A (en) * | 2021-10-25 | 2022-03-01 | 天津美派电动科技有限公司 | Chain wheel driving mechanism and using method thereof |
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| CN114104182A (en) * | 2021-10-25 | 2022-03-01 | 天津美派电动科技有限公司 | Chain wheel driving mechanism and using method thereof |
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