WO2017012358A1 - 定向传动机构、定向链轮装置及脚踏设备 - Google Patents

定向传动机构、定向链轮装置及脚踏设备 Download PDF

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Publication number
WO2017012358A1
WO2017012358A1 PCT/CN2016/076416 CN2016076416W WO2017012358A1 WO 2017012358 A1 WO2017012358 A1 WO 2017012358A1 CN 2016076416 W CN2016076416 W CN 2016076416W WO 2017012358 A1 WO2017012358 A1 WO 2017012358A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
wheel
directional
drive
driving
Prior art date
Application number
PCT/CN2016/076416
Other languages
English (en)
French (fr)
Inventor
武君
Original Assignee
武君
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201510422426.0A external-priority patent/CN105083462B/zh
Priority claimed from CN201520972479.5U external-priority patent/CN205203271U/zh
Priority claimed from CN201620057088.5U external-priority patent/CN205574210U/zh
Application filed by 武君 filed Critical 武君
Publication of WO2017012358A1 publication Critical patent/WO2017012358A1/zh
Priority to US15/597,924 priority Critical patent/US10392077B2/en
Priority to US16/514,376 priority patent/US10807677B2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
    • B62M11/06—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with spur gear wheels
    • 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
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/36—Rider propulsion of wheeled vehicles with rotary cranks, e.g. with pedal cranks
    • 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
    • B62M6/55—Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/18—Freewheels or freewheel clutches with non-hinged detent
    • F16D41/185—Freewheels or freewheel clutches with non-hinged detent the engaging movement having an axial component
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/24—Freewheels or freewheel clutches specially adapted for cycles
    • F16D41/26—Freewheels or freewheel clutches specially adapted for cycles with provision for altering the action
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/24—Freewheels or freewheel clutches specially adapted for cycles
    • F16D41/32—Freewheels or freewheel clutches specially adapted for cycles with non-hinged detent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/24—Freewheels or freewheel clutches specially adapted for cycles
    • F16D41/36—Freewheels or freewheel clutches specially adapted for cycles with clutching ring or disc axially shifted as a result of lost motion between actuating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/04—Combinations of toothed gearings only
    • F16H37/042—Combinations of toothed gearings only change gear transmissions in group arrangement
    • F16H37/043—Combinations of toothed gearings only change gear transmissions in group arrangement without gears having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
    • F16D41/08—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
    • F16D41/10—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action with self-actuated reversing

Definitions

  • the present invention is in the field of transmission mechanisms, and more particularly to an directional transmission mechanism, a directional sprocket device using the directional transmission mechanism, and a pedal device using the directional sprocket device.
  • a gear transmission generally connects a driven wheel to an output shaft, and the driving wheel directly meshes with the driven wheel or meshes with the idler to change the rotational speed, torque or direction of rotation of the output shaft relative to the driving wheel.
  • the direction of the output shaft changes.
  • the driving device that requires the driving wheel is clearly steered, and the steering is determined during installation. Once the driving device is rotated in the reverse direction, the device may be damaged.
  • the drive unit is reversed, which may cause the drive unit to useless work and reduce energy utilization.
  • the present invention is achieved by an directional transmission mechanism including a drive shaft, an output shaft, a directional wheel set that drives the output shaft to rotate in the same direction as the drive shaft, and the drive shaft and the a reverse wheel set that reversely rotates the drive shaft and a switching mechanism for switching the drive shaft to rotate the same or the reverse wheel set to orient the output shaft; the same wheel
  • the set connects the drive shaft and the output shaft, and the reverse wheel set connects the drive shaft and the output shaft.
  • the present invention uses a co-rotating wheel set to connect a drive shaft to an output shaft, and simultaneously uses a reverse wheel set to connect the drive shaft to the output shaft, and by setting a switching mechanism, switching the same direction wheel set or reverse by a switching mechanism
  • the use of the wheel set ensures that the output shaft can always rotate in the same direction, achieving directional rotation of the output shaft without changing with the change of the steering of the drive shaft.
  • Another object of the present invention is to provide a directional sprocket device comprising the directional transmission mechanism as described above And a driving wheel that drives the driving shaft of the directional transmission mechanism, a main transmission wheel that drives the rotation of the driving wheel, a transmission shaft that supports the main transmission wheel, and an output wheel that is connected to the output shaft.
  • the directional sprocket device of the present invention uses the above-described directional transmission mechanism so that the sprocket of the directional sprocket device can be rotated in the forward or reverse direction, and the output shaft can always rotate in the same direction.
  • Another object of the present invention is to provide a pedal device including a frame, a directional sprocket device as described above, and a foot pedal for driving a drive shaft of the directional sprocket device, A drive shaft is mounted on the frame.
  • the pedal device of the present invention uses the above-mentioned directional sprocket device, and can drive the pedal device forward when stepping on the pedal; meanwhile, in the reverse stepping pedal, it is also possible Driving the pedal device forwards, thus improving the driving efficiency and bringing different riding pleasures.
  • FIG. 1 is a perspective structural view of a directional sprocket device according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic exploded view of the directional transmission mechanism of the directional sprocket device of FIG. 1;
  • FIG. 3 is a schematic view of the internal structure assembly of the directional transmission mechanism of FIG. 2;
  • FIG. 4 is a cross-sectional structural view of the directional transmission mechanism of FIG. 3;
  • FIG. 5 is a schematic exploded view of the directional transmission mechanism of FIG. 3; [0014] FIG.
  • FIG. 6 is a schematic view of a switching mechanism switching port in the directional transmission mechanism of FIG. 3.
  • FIG. 7 is a perspective structural view of a directional sprocket transmission device according to Embodiment 2 of the present invention.
  • FIG. 8 is a cross-sectional structural view of the directional sprocket transmission of FIG. 7;
  • FIG. 9 is a schematic exploded view of the directional sprocket transmission of FIG. 7; [0018] FIG.
  • FIG. 10 is a schematic exploded view of the switching mechanism and the first driving gear and the second driving gear in the directional transmission mechanism of the directional sprocket transmission of FIG. 7;
  • FIG. 11 is an exploded perspective view of the switching mechanism of FIG. 10, further showing the first driving gear and the second driving gear;
  • FIG. 12 is a cross-sectional structural view of the switching mechanism of FIG. 10 and the first driving gear and the second driving gear combination ⁇ Figure.
  • FIG. 13 is a perspective structural view of a directional sprocket device according to Embodiment 3 of the present invention.
  • Figure 14 is a perspective view showing the internal structure of the directional sprocket device of Figure 13;
  • FIG. 15 is a cross-sectional structural view of the directional sprocket device of FIG. 14;
  • FIG. 16 is a schematic exploded view of the directional sprocket device of FIG. 14; [0025] FIG.
  • FIG. 17 is an exploded perspective view showing the switching mechanism and the first driving gear and the second driving gear in the directional transmission mechanism of the directional sprocket device of FIG. 14.
  • FIG. 18 is a perspective view of a three-dimensional structure of a pedal device according to an embodiment of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a directional sprocket device 10 includes a main transmission wheel 12, a transmission chain 13, an directional transmission mechanism 20, a slave transmission wheel 11, a transmission shaft 15, and an output.
  • the wheel 17, the main transmission wheel 12 and the slave transmission wheel 11 are both sprocket wheels, the transmission chain 13 is coupled to the main transmission wheel 12 and the slave transmission wheel 11, and the transmission wheel 11 is connected to the directional transmission mechanism 20, and the output wheel 17 is used for outputting power.
  • the main transmission wheel 12 is mounted on the transmission shaft 15, and the main transmission wheel 12 is supported by the transmission shaft 15, and when the transmission shaft 15 is rotated, the main transmission wheel 12 is driven to rotate synchronously.
  • the directional transmission mechanism 20 includes a drive shaft 21, an output shaft 22, a co-rotating wheel set 40, a reverse wheel set 30, and a switching mechanism 50.
  • the driving shaft 21 and the output shaft 22 are connected to the same wheel set 40.
  • the reverse wheel set 30 connects the drive shaft 21 and the output shaft 22.
  • the drive shaft 21 rotates the reverse wheel set 30 to drive the output shaft 22 to rotate, the drive shaft 21 and the output shaft 22 can be reversely rotated.
  • the switching mechanism 50 is used to switch whether the driving shaft 21 drives the rotating wheel set 40 or the reverse wheel set 30 to rotate; so that the output shaft 22 can be used regardless of whether the driving shaft 21 rotates in the forward direction or in the reverse direction. Rotation in one direction does not change as the steering of the drive shaft 21 changes.
  • the driving wheel 11 of the directional sprocket device 10 is connected to the driving shaft 21, so that the driving shaft 21 can be rotated.
  • the directional sprocket device 10 uses the directional transmission mechanism 20, and the directional transmission mechanism 20 can rotate the output shaft 22 in the same direction regardless of whether the main shaft 21 rotates in the forward direction or the reverse direction.
  • the sprocket of the directional sprocket device 10 can be rotated or reversed, and the output shaft 22 can always rotate in the same direction.
  • the output wheel 17 is mounted on the output shaft 22 such that when the output shaft 22 rotates, the output wheel 17 is rotated to output power.
  • the directional transmission mechanism 20 is applied to the directional sprocket device 10. In other embodiments, the directional transmission mechanism 20 can also be applied to other transmission mechanisms, or can be used as a gear box. . If the directional drive mechanism 20 is connected to the drive motor and the drive shaft of the directional drive mechanism 20 is rotated by the drive motor, the output shaft 22 can be rotated in the same direction regardless of whether the drive motor is forward or reverse. Therefore, it is convenient to drive the motor to be installed; in addition, after the drive motor is reversed, the directional transmission mechanism 20 can still be normally outputted, and the drive motor can be fully utilized to improve energy utilization.
  • the directional drive mechanism 20 can also be used to drive equipment such as multi-wheelers, tracked vehicles, boats, generators, and the like.
  • the switching mechanism 50 includes a first meshing tooth 52, a second meshing tooth 53 and a slider; the first meshing tooth 52 is used to drive the reverse wheel.
  • the group 30 rotates, the second meshing teeth 53 are used to drive the rotating wheel set 40;
  • the sliding member is slidably mounted on the driving shaft 21 for engaging the first engaging teeth 52 or the second meshing teeth 53, thereby driving the reverse wheel Group 30 or co-rotating wheel set 40 rotates.
  • One end of the slider has a tooth shape that meshes with the first meshing tooth 52, and the other end of the slider has a tooth shape that meshes with the second meshing tooth 53.
  • the drive shaft 21 is provided with a guide slider to and from the first meshing tooth 52. a sliding groove 215 that slides between the second meshing teeth 53.
  • the sliding member is a slider 51, and the slider 51 is slidably mounted in the sliding slot 215.
  • the sliding slot 215 is disposed along the axial direction of the driving shaft 21, and the first engaging teeth 52 and the second engaging teeth 53 are both It is a ratchet, and the ratchet teeth of the first meshing teeth 52 are oriented opposite to the ratchet teeth of the second meshing teeth 53.
  • Both ends of the slider 51 are provided with ratchet teeth respectively engaged with the first meshing teeth 52 and the second meshing teeth 53.
  • FIG. 6 Please refer to FIG. 6 and specifically for the left and right direction in FIG. 6, but the left and right directions herein are only for convenience of description in FIG.
  • each structural member is not limited: the ratchet of the left end of the slider 51
  • the first meshing tooth 52 forms a reverse ratchet
  • the ratchet of the right end of the slider 51 and the second The meshing teeth 53 form a forward ratchet.
  • the slider 51 When the driving shaft is reversed, the slider 51 is acted upon by the ratcheting teeth of the second engaging teeth 53, pushing the slider 51 away, moving the slider 51 along the sliding slot 215 to the first engaging teeth 52, and the first engaging teeth 52 meshing, driven by the driving shaft 21, drives the reverse wheel set 30 to rotate, and then, driven by the reverse wheel set 30, drives the output shaft 22 to rotate in the opposite direction to the driving shaft 21, and the second engaging teeth 53 and
  • the same wheel set 40 does not drive the output shaft 22 to rotate; when the drive shaft 21 rotates forward, the ratcheting action of the first meshing teeth 52 pushes the slider 51 away, so that the slider 51 slides along The slot 215 is moved to the second meshing tooth 53 and meshes with the second meshing tooth 53.
  • the first meshing tooth 52 is disengaged from the slider 51, and the reverse wheel set 30 no longer drives the output shaft 22 to rotate;
  • the ratchet teeth of the meshing teeth 52 are opposite to the ratchet teeth of the second meshing teeth 53.
  • the second meshing teeth 53 are rotated to drive the same wheel set 40.
  • the output shaft 22 is driven to rotate in the same direction as the driving shaft 21.
  • the structure can realize that the automatic switching of the driving shaft 21 drives the same wheel set 40 or the reverse wheel set 30 to rotate; and the structure is simple and convenient to manufacture.
  • sliders 51 there are a plurality of sliders 51, and corresponding slots 215 are also provided in plurality for better transmission. Further, the cross section of the slider 51 can be a parallelogram, which is simple to manufacture and convenient to process.
  • the directional transmission mechanism 20 is applied to the directional sprocket device 10, and is mounted from the transmission wheel 11 at an intermediate position of the drive shaft 21, and the same direction wheel set 40 and the reverse wheel set 30 are respectively disposed at the slave position.
  • a through hole 111 is formed in the transmission wheel 11 to cooperate with the driving shaft 21, and a groove 112 is provided in the through hole 111 corresponding to the position of the sliding groove 215, and along the driving shaft 21 In the radial direction, the slider 51 protrudes from the sliding slot 215 and protrudes into the corresponding recess 112. After being rotated from the driving wheel 11, the driving shaft 21 can be rotated by the slider 51.
  • a first spacer ring 213 is provided between the transmission wheel 11 and the same direction wheel set 40, and the transmission wheel is provided.
  • a second spacer ring 214 is disposed between the 11 and the reverse wheel set 30. Also, the wear from the transmission wheel 11 and the same direction wheel set 40 and the reverse wheel set 30 can be reduced.
  • the slave transmission wheel 11 may also be fixedly coupled to one end of the drive shaft 21, and the same direction wheel set 40 and the reverse wheel set 30 may be disposed on the same side of the slave drive wheel 11.
  • first engaging teeth 52 and the second engaging teeth 53 are both ratchet teeth, and the ratchet teeth of the first engaging teeth 52 are oriented opposite to the ratchet teeth of the second meshing teeth 53.
  • the sliding member may also be a sliding sleeve, and both ends of the sliding sleeve are toothed, and are respectively provided to cooperate with the first engaging teeth 52 and the second engaging teeth 53.
  • the driving of the driving shaft 21 drives the reverse wheel set 30 to rotate, and then the reverse wheel Under the driving of the group 30, the output shaft 22 is driven to rotate in the opposite direction to the driving shaft 21; when the driving shaft 21 is turned to the side, the first engaging teeth 52 are also reversed, and the same will push the sliding sleeve away, so that the sliding sleeve is along the sliding slot.
  • the reverse wheel set 30 no longer drives the output shaft 22 to rotate; and the first meshing tooth
  • the ratchet teeth of 52 are opposite to the ratchet teeth of the second meshing teeth 53.
  • the second meshing teeth 53 are rotated to drive the same wheel set 40 to rotate, thereby driving the output.
  • the shaft 22 rotates in the same direction as the drive shaft 21.
  • the structure can also realize whether the automatic switching drive shaft 21 drives the same direction wheel set 40 or drives the reverse wheel set 30 to rotate.
  • the same wheel set 40 and the reverse wheel set 30 are disposed at both ends of the drive shaft 21, and the slider is disposed between the same direction wheel set 40 and the reverse wheel set 30.
  • the first engaging teeth 52 and the second engaging teeth 53 may also be ordinary gear teeth
  • the sliding member may also be a sliding sleeve, and both ends of the sliding sleeve are toothed, and the driving shaft 21
  • the upper chute 215 is arranged in a spiral shape, and the sliding sleeve is inserted into the sliding slot 215.
  • the driving shaft 21 rotates in the forward direction
  • the driving block moves along the sliding slot 21 5 , and the same is driven by the convex block.
  • the sliding sleeve rotates with the driving shaft 21 until it meshes with the first engaging teeth 52 or the second engaging teeth 53.
  • the driving shaft 21 drives the sliding sleeve to be connected with the second meshing tooth 53, thereby driving the same wheel set 40 to rotate;
  • the driving shaft 21 is reversed, the sleeve will be moved to the reverse wheel set 30 to connect the sliding sleeve with the first engaging teeth 52, thereby driving the reverse wheel set 30 to rotate.
  • the structure can also realize automatic switching of the drive shaft 2 1 to drive the same direction wheel set 40 or to drive the reverse wheel set 30 to rotate.
  • the movement stroke of the sliding sleeve can also be determined by the length of the spiral chute 215.
  • an external tooth may be disposed at one end of the sliding sleeve, and the corresponding pair may be in the same direction wheel set 40 and
  • the internal gear that cooperates with the external tooth is disposed in the wheel set 30, and the structure can set the same direction wheel set 40 and the reverse wheel set 30 on the same side of the drive shaft 21, and the slide shaft is moved by the drive shaft 21 to The sleeve is connected to the same wheel set 40 or to the reverse wheel set 30.
  • manual switching may also be used.
  • a pusher piece and an engaging block may be mounted on the drive shaft 21, and the engaging block is pushed by the push piece to move the engaging block to the same direction wheel set 40 or The reverse wheel set 30 is connected for manual switching.
  • the reverse wheel set 30 includes a first driving gear 31 and a first driven gear. 32.
  • the first driving gear 31 is disposed on the driving shaft 21, and the first driving gear 52 is disposed on the first driving gear 31.
  • the first driven gear 32 is coupled to the output shaft 22, and the first driven gear 32 is meshed with the first drive gear 31.
  • the first driven gear 32 meshes with the first driving gear 31, so that the first driven gear 32 rotates in the opposite direction with the first driving gear 31 to drive the output shaft 22 to rotate in the opposite direction to the driving shaft 21.
  • the reverse wheel set 30 is only two gears, and has a simple structure and low cost.
  • the reverse wheel set 30 When the reverse wheel set 30 includes an even number of gears that are sequentially engaged, the first and last gears can be reversely rotated, and the output shaft 22 can be driven to rotate in the opposite direction to the drive shaft 21.
  • the reverse wheel set 30 may include an even number of gears that are sequentially engaged, the gear at the head is the first drive gear 31, and the gear at the rear is the first driven gear connected to the output shaft 22. 32.
  • a first cam 312 is disposed on a side of the first driving gear 31 adjacent to the slider, and the first engaging teeth 52 are disposed on a side of the first cam 312 away from the first driving gear 31.
  • the first engaging teeth 52 are disposed in the first shaft hole 311, and the first engaging teeth 52 are disposed at one end of the first shaft hole 311 near the reverse wheel set 30.
  • the structure is simple to manufacture, compact in structure, and the first cam 312 is provided to increase the strength of the first driving gear 31.
  • the first engagement tooth 52 can also be disposed on the first cam 312 on a side adjacent the slider.
  • the first cam 312 and the first driving gear 31 are integrally formed with high strength.
  • the first cam 312 can be made separately from the first driving gear 31, and the first cam 312 can be fixedly coupled to the first driving gear 31.
  • the same wheel set 40 includes a second driving gear 41, a second driven gear 42 and an idler gear 43.
  • the center of the second driving gear 41 is provided with a second shaft hole 411 that cooperates with the driving shaft 21.
  • the second driving gear 41 is set on the driving shaft 21, and the second meshing teeth 53 are disposed on the second driving gear 41.
  • the second driven gear 42 is connected to the output shaft 22, and the second driven gear 42 is spaced apart from the second driving gear 41.
  • the idle gear 43 cooperates with the second driving gear 41 and the second driven gear 42.
  • the second driving gear 41 and the second driven gear 42 are engaged by the idle gear 43, the second driving gear 41 and the idle gear 43 are reversely rotated, and the idle gear 43 and the second driven gear 42 are reversely rotated, and then the second The driven gear 42 rotates in the same direction as the second driving gear 41 to drive the output shaft 22 to rotate in the same direction as the driving shaft 21.
  • the same wheel set 40 is only three gears, and the structure is simple and the cost is low.
  • the same wheel set 40 includes an odd number of gears that are sequentially engaged, it can be ensured that the first and last gears rotate in the same direction, and the output shaft 22 can be driven to rotate in the same direction as the drive shaft 21.
  • the same wheel set 40 may include an odd number of gears that are sequentially engaged, the gear located at the head is the second drive gear 41, and the gear at the tail is the second driven gear 42 connected to the output shaft 22, and the odd number of gears in the middle are Idler 43.
  • a second cam 412 is disposed on a side of the second driving gear 41 adjacent to the sliding member, and a second engaging tooth 53 is disposed on a side of the second cam 412 away from the second driving gear 41.
  • the second engaging teeth 53 are disposed in the second shaft hole 411, and the second engaging teeth 53 are disposed in the second shaft hole 411 near one end of the same direction wheel set 40.
  • the structure is simple to manufacture, compact in structure, and the second cam 412 is provided to increase the strength of the second driving gear 41.
  • the second engaging teeth 53 may also be disposed on the second cam 412 on the side adjacent the slider.
  • the second cam 412 and the second driving gear 41 are integrally formed and have high strength.
  • the second cam 412 and the second driving gear 41 may be separately formed, and the second cam 412 and the second driving gear 41 may be fixedly coupled.
  • the first driving gear 31 and the first driven gear 32 have the same modulus number and the same center distance
  • the second driving gear 41 and the second driven gear 42 have the same The number of the teeth of the module and the equal center distance, whether the forward or reverse rotation, the drive shaft 21 and the output shaft 22 rotate at the same speed, of course, the first drive gear 31 and the first driven gear 32 and the second drive gear 41
  • the second driven gear 42 can also employ different numbers of teeth and gear ratios.
  • the directional transmission mechanism 20 further includes a support shaft 21, a co-rotating wheel set 40, a reverse wheel set 30 and an output shaft 22.
  • Support frame 60 is provided to support the drive shaft 21, the same wheel set 40, the reverse wheel set 30 and the output shaft 22, and the directional drive mechanism 20 can be better assembled to facilitate the installation and use of the directional drive mechanism 20.
  • the support frame 60 includes a first support plate 61, a second support plate 62, and a connecting block 63 connecting the first support plate 61 and the second support plate 62.
  • the two ends of the drive shaft 21 and the first support respectively The plate 61 and the second support plate 62 are pivotally connected, and the output shaft 22 is pivotally connected to the first support plate 61.
  • two connecting blocks 63 are respectively disposed on the upper and lower sides of the first supporting plate 61, and both ends of the connecting block 63 pass through the screws 631 and the first supporting plate 61 and the second supporting plate, respectively. 62 connected.
  • the support frame 60 further includes a support shaft 65 supporting the idler pulley 43.
  • the support shaft 65 is connected to the first support plate 61, and the idler pulley 43 is pivotally connected to the support shaft 65.
  • the support frame 60 further includes a third support plate 64, and the third support plate 64 and the first The support plate 61 is located at the same end of the drive shaft 21, and the drive shaft 21 is pivotally connected to the third support plate 64.
  • the support shaft 65 can be supported by the third support plate 64 and the first support plate 61.
  • the slide shaft 651 is also provided on the support shaft 65 at a position corresponding to the idle gear 43.
  • the first driving gear 31 and the second driving gear 41 are prevented from falling off, and the driving shaft 21 is removed.
  • the two ends are respectively disposed on the first abutting sleeve 211 and the second abutting sleeve 212.
  • the first abutting sleeve 211 is located on a side of the second driving gear 41 away from the first driving gear 31, and the second abutting sleeve 212 is located.
  • the first drive gear 31 is away from the side of the second drive gear 41.
  • the support frame 60 further includes a positioning sleeve 611, and the positioning sleeve 611 is sleeved on the drive shaft 21, A support plate 61 and a third support plate 64 are mounted on the positioning sleeve 611.
  • the first support plate 61 and the third support plate 64 may be coupled to the positioning sleeve 61 1 by an interference fit.
  • the third support plate 64 can be caught on the positioning sleeve 611 by using the retaining ring 641.
  • a sleeve 612 is also mounted in the positioning sleeve 611 to reduce the frictional force received by the driving shaft 21.
  • the directional sprocket device 10 is applied to the pedal device, and the directional transmission mechanism 20 is applied to the pedal device, so that the output shaft 22 can be the rear wheel of the pedal device.
  • the hub, one end of the output shaft 22 is connected to the first driven gear 32, and the second driven gear 42 is connected to the first driven gear 32, and the drive shaft 21 is connected to the first support plate 61 through the spindle.
  • the first driven gear 32 and the second driven gear 42 may be mounted directly on the output shaft 22 when the directional drive mechanism 20 is applied to other equipment.
  • the directional transmission mechanism 20 further includes a lands 24 connecting the second driven gear 42 and the first driven gear 32, and the second driven gear 42 and the first driven gear 32 are respectively disposed on the lands Both sides of the 24th.
  • the lands 24 are provided to divide the second driven gear 42 and the first driven gear 32 to prevent the second driven gear 42 and the first driven gear 32 from interacting with each other, facilitating the same wheel set 40 and the reverse wheel set 30. installation.
  • the output wheel 17 is a flywheel, one end of the output shaft 22 is connected to the output wheel 17, and the output wheel 17 is connected to the same wheel set 40 or the reverse wheel set 30, and the flywheel is set.
  • the drive shaft 21 is stationary, The output shaft 22 can be guaranteed to rotate normally.
  • the output wheel 17 is fixed to the lands 24.
  • the output wheel 17 is disposed on a side of the first driven gear 32 away from the second driven gear 42.
  • the output wheel 17 is rotated by the same wheel set 40 or the reverse wheel set 30, and then the output shaft 22 is rotated to output power.
  • the co-rotating wheel set 40 and the reverse wheel set 30 can also be coupled directly to the output shaft 22.
  • the output shaft 22 may be a rear wheel bushing of a bicycle, and the directional sprocket device
  • the 10 also includes a stationary shaft 66 that supports the rear wheel bushing.
  • a fixed shaft 66 is provided for mounting on the rear wheel of the bicycle and supporting the output shaft 22.
  • an embodiment of the present invention also discloses a pedal device including a frame, a directional sprocket device 10 as described above, and a foot for driving the drive shaft 15 of the directional sprocket device 10.
  • the pedal, the drive shaft 15 is mounted on the frame.
  • the pedaling device uses the above-mentioned directional sprocket device 10, and the pedal device can be driven forward when the pedal is pressed forward; at the same time, the pedal can also be driven in the reverse pedal ⁇ The device is moving forward.
  • the flywheel rim is mounted in the directional sprocket device 10
  • the pedals of the pedal device are not moved, and the pedal device can be freely pushed forward and backward.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1
  • the directional sprocket device 10b of the present embodiment includes a transmission shaft 15b and a shifting wheel. Group 16b, drive gear 19b, output wheel 17b, directional drive mechanism 20b, main drive wheel 12b, slave drive wheel l ib and drive chain 13b; wherein main drive wheel 12b and slave drive wheel l ib are sprocket, drive chain 13b is coupled to the main transmission wheel 12b and the slave transmission wheel l ib, and is connected to the directional transmission mechanism 20b from the transmission wheel l ib.
  • the main transmission wheel 12b is mounted on the transmission shaft 15b, and the rotation of the transmission shaft 15b drives the main transmission wheel 12b to rotate. Further, the transmission wheel 13b is driven to rotate from the transmission wheel 11b and the directional transmission mechanism 20b.
  • the output wheel 17b is connected to the directional transmission mechanism 20b. When the directional transmission mechanism 20b is rotated, the output wheel 17b can be rotated, and the drive wheel 1b is driven.
  • the direction of rotation transmitted is positive and negative, and can be converted by the directional transmission mechanism 20b to rotate the output wheel 17b in the same direction; the drive gear 19b is coaxially connected with the shift wheel set 16b, and the drive gear is driven 19b drives the shifting wheel set 16b to rotate to output power; the shifting wheel set 16b is fitted to the propeller shaft 15b, and the shifting wheel set 16b is rotatable on the propeller shaft 15b to support the shifting wheel set 16b via the propeller shaft 15b.
  • the structure of the directional sprocket device 10b is more compact; the output wheel 17b is a gear, and the drive gear 19b is meshed with the output wheel 17b.
  • the shifting wheel set 16b and the fixed mounting main drive wheel 12b are rotatably mounted on the propeller shaft 15b, and the directional transmission mechanism 20b, the slave transmission wheel 11b, the drive gear 19b and the output wheel 17b are provided, and the main transmission wheel 12b uses the transmission chain 13b is connected to the driving wheel l ib.
  • the driving shaft 15b rotates forward or reverse
  • the directional transmission mechanism 20b can be converted into the same direction to drive the output wheel 17b to rotate, thereby driving the shifting wheel set 16b to always rotate in the same direction, thereby ensuring that the 13b is rotated in the same direction.
  • the transmission shaft 15b and the main transmission wheel 12b can directionally output the output wheel 17b and the shifting wheel group 16b regardless of whether it is rotated forward or reverse.
  • the directional drive mechanism 20b includes a drive shaft 21b, an output shaft 22b, a co-rotating wheel set 40b, a reverse wheel set 30b, and a switching mechanism 50b.
  • the co-rotating wheel set 40b is connected to the driving shaft 21b and the output shaft 22b.
  • the driving shaft 21b drives the same-direction wheel set 40b to rotate
  • the driving shaft 22b is driven to rotate, so that the driving shaft 21b and the output shaft 22b can rotate in the same direction.
  • the reverse wheel set 30b connects the drive shaft 21b and the output shaft 22b.
  • the drive shaft 21b rotates the reverse wheel set 30b to drive the output shaft 22b to rotate, the drive shaft 21b and the output shaft 22b can be reversely rotated.
  • the switching mechanism 50b is configured to switch whether the driving shaft 21b drives the rotation of the same wheel set 40b or the rotation of the reverse wheel set 30b; so that the output shaft 22b can be made the same whether the driving shaft 21b is rotated in the forward direction or reversed.
  • the rotation in one direction does not change with the change of the steering of the drive shaft 21b to achieve the directional drive.
  • the driving wheel 1 ib is mounted on the driving shaft 21b, and the output wheel 17b is mounted on the output shaft 22b, so that the rotation of the transmission shaft 15b can be transmitted to the driving shaft 21b, so that the directional transmission mechanism 20b performs steering change, thereby driving the output wheel. 17b is rotated to output power to the shifting wheel group 16b.
  • the switching mechanism 50b includes a first meshing tooth 52b, a second meshing tooth 53b and a plurality of sliders 51b; the first meshing tooth 52b is used to drive the reverse Rotating to the wheel set 30b, the second meshing teeth 53b are used to drive the same wheel set 40b; the first meshing teeth 52b and the second meshing teeth 53b are ratchet teeth, and the orientation of the first meshing teeth 52b and the second meshing teeth The opposite direction of the 53b, the slider 51b is slidably mounted on the driving shaft 21b for engaging the first engaging teeth 52b or the second engaging teeth 53b, thereby driving the reverse wheel set 30b or the same direction wheel set 40b.
  • One end of the slider 51b is for engaging with the first meshing tooth 52b, and the other end of the slider 51b is for engaging with the second meshing tooth 53b, and the drive shaft 21b is provided with the guide slider 51b to and from the first meshing tooth 52b. a sliding groove 215b that slides between the second meshing teeth 53b.
  • the directional transmission mechanism 10b further includes a connecting sleeve 110b, which is fixed to the connecting sleeve from the driving wheel l ib
  • the connecting sleeve 110b is provided, and the slider 51b can be defined on the driving shaft 21b to prevent the slider 51b. Dropped. Further, the connecting sleeve 110b is provided with a through hole 111b that cooperates with the driving shaft 21b, and the side wall of the through hole 11 lb is provided with a groove 112b corresponding to the position of the sliding groove 215b, and the diameter along the driving shaft 21b. Toward, the slider 51b protrudes from the sliding groove 215b and protrudes into the corresponding groove 112b.
  • the driving wheel l ib is fixed on the connecting sleeve 110b to drive the connecting sleeve 110b to rotate by the driving wheel l ib, thereby driving the driving shaft 21b to rotate.
  • the driving wheel l ib can be integrally formed with the connecting sleeve 110b for convenient processing. In other embodiments, the drive wheel l ib can also be directly attached to the drive shaft 21b.
  • each structural member is not limited: the left end of the slider 51b and The first engaging teeth 52b form a reverse ratchet, and the right end of the slider 51b forms a forward ratchet with the second engaging teeth 53b.
  • the driving shaft 21 b is rotated forward, the slider 51b slides to the right by the inclined surface of the second engaging teeth 53b, disengages from the second meshing teeth 53b, and then the slider 51b meshes with the first meshing teeth 52b to drive the reverse wheel set.
  • the structure can realize the rotation direction of the driving shaft 21b, whether the automatic switching is to drive the same wheel set 40b or the reverse wheel set 30b to rotate; and the structure is simple, the production is convenient, and the movement is reliable.
  • the cross section of the slider 51b may be a parallelogram, which is simple to manufacture and convenient to process.
  • the same wheel set 40b and the reverse wheel set 30b are rotatably mounted at both ends of the drive shaft 21b, and the slide block 5 lb is disposed between the same direction wheel set 40b and the reverse wheel set 30b.
  • two ends of the connecting sleeve 110b are respectively provided with pupils 113b corresponding to the positions of the recesses 1 12b, and the pupils 113b are respectively installed in the pupils 113b.
  • the elastic positioning component 18, the two ends of the slider 51b are provided with positioning slots 511b for engaging with the elastic positioning component 18. When the elastic positioning component 18 extends into the corresponding positioning slot 511b, the corresponding slider 51b can be positioned. live.
  • the elastic positioning assembly 18 includes a marble 181, a spring 182, and a locking block 183, and the marble 181, the spring 182, and the locking block 183 are sequentially mounted in the corresponding pupils 113b, the marble 181 and the locking block 183.
  • the spring 182 Located at the two ends of the spring 182, the spring 182 abuts the marble 181 toward the slider 51b, and the marble 181 extends into the positioning groove 511b of the slider 51b, so that the slider 51b can be positioned, and the slider 51b
  • the cymbal 181 is slid on the drive shaft 21b, and the marble 181 can be received in the boring 113b.
  • the lock block 183 is mounted in the boring 113b to prevent the spring 182 from coming off the boring 113b.
  • the locking block 183 can be a nut with a simple structure and convenient installation.
  • the resilient positioning assembly 18 can also be an elastic telescopic rod.
  • the directional sprocket device 10b further includes a support shaft 21b, a same wheel set 40b, a reverse wheel set 30b, and a drive shaft 15b. And a support frame 60b of the output shaft 22b.
  • the support frame 60b is arranged to support the driving shaft 21b, the same wheel set 40b, the reverse wheel set 30b, the transmission shaft 15b and the output shaft 22b, and the directional transmission mechanism 20b can be better assembled to facilitate the directional transmission mechanism 20 The installation of b is used.
  • the support frame 60b includes a first support plate 61b and a second support plate 62b.
  • the second support plate 62b has a U shape, and both ends thereof are connected to the first support plate 61b, and pass through the first support plate 61b and the second support plate.
  • 62b supports the drive shaft 21b, the output shaft 22b, and the drive shaft 15b to facilitate assembly of the directional sprocket device 10b.
  • the directional sprocket device 10b further includes a U-shaped bracket 64b, one side of the U-shaped bracket 64b is connected to the central portion of the second supporting plate 62b, and the U-shaped bracket 64b is located at the second supporting plate 62b away from the first supporting plate 61b.
  • one end of the output shaft 21 is connected to the output wheel 17b through both ends of the U-shaped bracket 64b, and the output wheel 17b and the directional transmission mechanism 2 Ob are respectively located on both sides of the U-shaped bracket 64b.
  • the U-shaped frame 64b is arranged to adjust the width of the directional sprocket device 10b, and the directional sprocket device 10b is conveniently mounted on a bracket of a bicycle device such as a bicycle to facilitate installation and use of different pedal devices.
  • the directional sprocket device 10b further includes a protective cover 70 covering the directional transmission mechanism 20b, the main transmission wheel 12b, the slave transmission wheel l ib and the output wheel 17b, thereby protecting the orientation Transmission mechanism 20 b, the main drive wheel 12b, the slave drive wheel l ib and the output wheel 17b, the same can also prevent personnel from contacting the directional drive mechanism 20b, the main drive wheel 12b, the drive wheel l ib and the output wheel 17b, to protect personnel The role of safety.
  • the protective cover 70b includes a first cover 71b and a second cover 72b that are engaged with each other to facilitate processing and assembly of the components.
  • the support frame 60b further includes a support shaft 65b supporting the idler pulley 43b, and the support shaft 65b is connected to the first support plate 61b, and the idler pulley 43b is pivotally connected to the support shaft 65b.
  • the support shaft 65b is also provided with a sleeve 431b, and the idler pulley 43b is mounted on the sleeve 431b.
  • the first snap ring 432b is mounted on the support shaft 65b.
  • a second snap ring 171b is also mounted on the output shaft 22b.
  • the first driving gear 31b and the second driving gear 41b are prevented from falling off, and the two ends of the driving shaft 21b are respectively fitted on the first abutting sleeve 21 lb and the second abutting sleeve 212b, and the first abutting sleeve 21 lb Located on the side of the second driving gear 41b away from the first driving gear 31b, the second abutting sleeve 212b is located on the side of the first driving gear 3 lb away from the second driving gear 41b.
  • the output shaft 22b is further mounted with a first stop sleeve 221b and a second stop sleeve 222b, the first stop The sleeve 221b is located on a side of the second driven gear 42b away from the first driven gear 32b, and the second stopper 222b is located on a side of the first driven gear 32b away from the second driven gear 42b.
  • the first follower gear 22b and the second follower gear 32b are prevented from moving against the second driven gear 42b and the second driven gear 32b by the first and second retaining sleeves 2, 21b, 222b, and the second driven gear 32b and the second driven gear 42b are prevented from moving on the output shaft 22b.
  • a support bearing 191b is mounted on the drive shaft 15b, and the drive gear 19b is mounted on the support bearing 191b.
  • the shifting wheel set 16b includes a plurality of output sprockets 161b, and the plurality of output sprockets 161b are coaxially disposed, and the diameters of the plurality of output sprockets 161b are sequentially decreased along the axial direction of the propeller shaft 15b.
  • the structure design after using ⁇ , through different output sprocket 161b output, can output different speed ratios to achieve the speed regulation function.
  • the diameters of the plurality of output sprockets 161b are sequentially increased from the middle of the propeller shaft 15b toward the end away from the end of the directional transmission mechanism 20b.
  • the diameters of the plurality of output sprockets 161b are sequentially reduced by the end of the drive shaft 15b away from the end of the directional drive mechanism 20 toward the middle of the drive shaft 15b.
  • the output sprocket 161b is three. In other embodiments, the output sprocket 161b is also Thought more.
  • the other structure of the directional sprocket device 10b of the present embodiment is the same as that of the directional sprocket device of the first embodiment, and is not cumbersome here.
  • an embodiment of the present invention also discloses a pedal device including a bracket, a directional sprocket device 10b as described above, and a foot pedal respectively mounted on both ends of the transmission shaft 15b, the transmission shaft 15b. Mounted on the bracket.
  • the pedal device uses the above-mentioned directional sprocket device 10b, the pedal device can be driven forward in the forward pedal pedal; at the same time, the pedal can also be driven in the reverse pedal ⁇ The equipment advances; the same as the transmission shaft can realize the positive and negative rotation of the output shaft, thus improving the driving efficiency and bringing different riding pleasure.
  • the pedal device may be a bicycle, a pedal boat, a pedal generator or the like that requires a one-way rotation operation.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the orientation sprocket device 10c of the present embodiment is different from the directional sprocket device of the first embodiment in that: the directional sprocket device 10c includes a transmission shaft 15c, a shifting wheel set 16c, a drive sprocket 19c, an output wheel 17c, a directional transmission mechanism 20c, a main transmission wheel 12c, a slave transmission wheel 11c and a drive chain 192c; wherein the output wheel 17c is a sprocket, and the main transmission wheel 12c and the slave transmission wheel 11c are gears, And the main transmission wheel 12c is meshed with the transmission wheel 11c, the main transmission wheel 12c is mounted on the transmission shaft 15c, and the transmission wheel 11c is connected with the directional transmission mechanism 20c.
  • the rotation of the transmission shaft 15c drives the main transmission wheel 12c to rotate, thereby driving
  • the driving wheel l lc and the directional transmission mechanism 20c are rotated;
  • the output wheel 17c is connected to the directional transmission mechanism 20c.
  • the directional transmission mechanism 20c When the directional transmission mechanism 20c is rotated, the output wheel 17c can be rotated, and the rotation direction transmitted from the transmission wheel 11c is positive or negative. Both can be converted by the directional transmission mechanism 20c to rotate the output wheel 17c in the same direction; the drive sprocket 19c is coaxially connected with the shifting wheel set 16c.
  • the overdrive sprocket 19c drives the shifting wheel set 16c to rotate to output power; the shifting wheel set 16c is fitted to the drive shaft 15c, and the shifting wheel set 16c is rotatable on the drive shaft 15c to support the shifting wheel set via the drive shaft 15c.
  • the structure of the directional sprocket device 10c is more compact; the driving chain 192c is coupled with the driving sprocket 19c and the output wheel 17c.
  • the driving sprocket can be driven by the driving chain 192c.
  • the 19c rotates, which in turn drives the shifting wheel set 16c to rotate, and outputs power.
  • the shifting wheel set 16c and the fixed mounting main drive wheel 12c are rotatably mounted on the propeller shaft 15c, and the directional transmission mechanism 20c, the slave transmission wheel 111, the drive sprocket 19c and the output wheel 17c are provided, and the main transmission wheel 12c is driven.
  • the directional drive mechanism 20c can be converted into the same direction to drive the output wheel 17c to rotate, thereby driving the shift wheel set 16c to always rotate in the same direction, ensuring that the drive shaft 15c is positive. Both the rotation and the reverse rotation can cause the shifting wheel group 16c to be outputted in a directional manner.
  • the directional transmission mechanism 20c includes a drive shaft 21c, an output shaft 22c, a co-rotating wheel set 40c, a reverse wheel set 30c, and a switching mechanism 50c.
  • the co-rotating wheel set 40c is connected to the driving shaft 21c and the output shaft 2 2c.
  • the driving shaft 21c drives the same-direction wheel set 40c to rotate
  • the driving shaft 22c is driven to rotate, so that the driving shaft 21c and the output shaft 22c can rotate in the same direction.
  • the reverse wheel set 30c connects the drive shaft 21c and the output shaft 22c.
  • the switching mechanism 50c is configured to switch whether the driving shaft 21c drives the rotation of the same wheel set 40c or the rotation of the reverse wheel set 30c; so that the output shaft 22c can be made the same whether the driving shaft 21c is rotated in the forward direction or reversed.
  • the rotation in one direction does not change with the change of the steering of the drive shaft 21c to achieve the directional drive.
  • the driving wheel 11c is mounted on the driving shaft 21c, and the output wheel 17c is mounted on the output shaft 22c, so that the rotation of the transmission shaft 15c can be transmitted to the driving shaft 21c, so that the directional transmission mechanism 20c performs steering change, thereby driving the output wheel 17c. Rotate to output power to the shifting wheel set 16c.
  • the switching mechanism 50c includes a first meshing tooth 52c, a second meshing tooth 53c and a sliding sleeve 51c; the first meshing tooth 52c is used to drive the reverse The wheel set 30c rotates, and the second meshing teeth 53c are used to drive the same wheel set 40c to rotate; the first meshing teeth 52c and the second meshing teeth 53c are ratchet teeth, the orientation of the first meshing teeth 52c and the second meshing teeth 53c In the opposite direction, the first engaging teeth 52c, the sliding sleeve 51c and the second engaging teeth 53c are sequentially fitted on the driving shaft 21c, and both ends of the sliding sleeve 51c are respectively provided for meshing with the first engaging teeth 52c and the second engaging teeth 53c.
  • Ratchet 515c The ratchet teeth 515c at one end of the sliding sleeve 51c are for engaging with the first engaging teeth 52c, and the ratchet teeth 515c at the other end of the sliding sleeve 51c are for engaging with the second engaging teeth 53c, thereby driving the reverse wheel set 30c or the same direction wheel Group 40c rotates.
  • the sliding groove 215c on the driving shaft 21c has a spiral shape so that the driving shaft 21c is formed with a spiral external tooth, and the sliding sleeve 51c is provided with a helical internal tooth 516c that meshes with the helical external tooth.
  • the sliding sleeve 51c When the driving shaft 11c is rotated to drive the driving shaft 21c to rotate, and the spiral internal teeth 516c of the sliding sleeve 51c mesh with the helical external teeth of the driving shaft 2 lc, the sliding sleeve 51c can be pushed to move on the driving shaft 21c.
  • the sliding sleeve 51c When the driving shaft 21c is reversed, the sliding sleeve 51c can be moved in the direction of the first engaging teeth 52c to engage the sliding sleeve 51c with the first engaging teeth 52c to drive the first engaging teeth 52c to rotate and drive the reverse wheel.
  • the group 30c rotates, thereby rotating the output shaft 22c and the driving shaft 21c in opposite directions; when the driving shaft 21c is rotated, the sliding sleeve 51c can be pushed to the second meshing teeth.
  • the direction of the 53c is moved to engage the sliding sleeve 51c with the second engaging teeth 53c to drive the second engaging teeth 53c to rotate, and to rotate the same rotating wheel set 40c, thereby rotating the output shaft 22c in the same direction as the driving shaft 21c.
  • the directional sprocket device 10c further includes a first bearing 54c and a second bearing 55c, both of which are mounted on the driving shaft 21c, and the sliding sleeve 51c is located at the first bearing Between 54c and the second bearing 55c, the first engaging teeth 52c are supported by the first bearing 54c, and the second engaging teeth 53c are supported by the second bearing 55c so that the first engaging teeth 52c and the second engaging teeth 53c can be on the driving shaft 21c
  • the upper flexible rotation can prevent the wear between the drive shaft 21c and the first meshing teeth 52c and the second meshing teeth 53c from being reduced.
  • the reverse wheel set 30c includes a first driving gear 31c and a first driven gear 32c.
  • the center of the first driving gear 31c is provided with a driving shaft 21c.
  • the first driving gear 31c is fitted on the driving shaft 21c, and the first engaging gear 52c is disposed on the first driving gear 31c.
  • the first driven gear 32c is coupled to the output shaft 22c, and the first driven gear 32c is meshed with the first drive gear 31c.
  • the first driven gear 32c is meshed with the first driving gear 31c, so that the first driven gear 32c and the first driving gear 31c are reversely rotated to drive the output shaft 22c to rotate in the opposite direction to the driving shaft 21c.
  • the reverse wheel set 30c is only two gears, and has a simple structure and low cost.
  • the reverse wheel set 30c includes an even number of gears that are sequentially engaged, it can be ensured that the first and last gears are reversely rotated, and the output shaft 22c can be driven to rotate in the opposite direction to the drive shaft 21c.
  • the reverse wheel set 30c may include an even number of gears that are sequentially engaged, then the gear at the head is the first drive gear 31c, and the gear at the rear is A first driven gear 32c connected to the output shaft 22c.
  • a first cam 312c is disposed on a side of the first driving gear 31c adjacent to the slider, and the first engaging teeth 52c are disposed on a side of the first cam 312c away from the first driving gear 31c.
  • the first engaging teeth 52c are disposed on the side surface of the first cam 312.
  • the first cam 312c and the first driving gear 31c are integrally formed with high strength. In other embodiments, It is also possible to divide the first cam 312c and the first driving gear 31c, and then fix the first cam 312c and the first driving gear 31c.
  • the same-direction wheel set 40c includes a second driving gear 41c, a second driven gear 42c, and an idler gear 43c.
  • the center of the second driving gear 41c is provided with a second shaft hole 411c that cooperates with the driving shaft 21c.
  • the second driving gear 41c is set on the driving shaft 21c, and the second meshing teeth 53c are disposed on the second driving gear 41c.
  • the second driven gear 42c is connected to the output shaft 22c, the second driven gear 42c is spaced apart from the second driving gear 4, and the idler 43c is engaged with the second driving gear 41c and the second driven gear 42c.
  • the second driving gear 41c and the second driven gear 42c are engaged by the idle gear 43c, the second driving gear 41c and the idle gear 43c are reversely rotated, and the idler 43c and the second driven gear 42c are reversely rotated, and then the second The driven gear 42c rotates in the same direction as the second driving gear 41c to drive the output shaft 22c to rotate in the same direction as the driving shaft 21c.
  • the same wheel set 40c is only three gears, and the structure is simple and the cost is low.
  • the same direction wheel set 40c includes an odd number of gear wheels that are sequentially engaged, it can be ensured that the first and last gears rotate in the same direction, and the output shaft 22c can be driven to rotate in the same direction as the drive shaft 21c.
  • the same wheel set 40c may include an odd number of gears that are sequentially engaged, then the gear at the head is the second drive gear 41c, and the gear at the tail is the second driven gear connected to the output shaft 22c. 42c, the odd number of gears in the middle is the idler gear 43c.
  • a second cam is disposed on a side of the second driving gear 41c adjacent to the sliding member, and a second engaging tooth 53c is disposed on a side of the second cam away from the second driving gear 41c.
  • the second engaging teeth 53c are provided on the side faces of the second cam.
  • the second cam 412c and the second driving gear 41c are integrally formed and have high strength.
  • the second cam 412c and the second driving gear 41c may be made separately, and the second cam 412c and the second driving gear 41c may be fixedly connected.
  • the directional sprocket device 10c further includes a support frame 60c.
  • the drive shaft 21c and the output shaft 22c are pivotally connected to the support frame 60c, and the output wheel 11c and the output are driven.
  • the wheels 17c are respectively located on opposite sides of the support frame 60c.
  • the driving shaft 21c and the output shaft 22c are pivotally connected to the support frame 60c, so that the directional transmission mechanism 20c can be supported by the support frame 60c, and the directional transmission mechanism 20c can be protected. .
  • the support frame 60c can be fixed to support the directional transmission mechanism 20c.
  • a support shaft 65c may be mounted in the support frame 60c to support the idler pulley 43c of the same direction wheel set 40c so that the idler gear 43c can be rotated more smoothly.
  • the support frame 60c can be fabricated using a plurality of plates to reduce the difficulty of processing and reduce the cost. In other embodiments, the support frame 60c can also be integrally cast to facilitate assembly.
  • the directional sprocket device 10c further includes a protective cover 70c that covers the main drive wheel 12c and the slave drive wheel 11c by using the protective cover 70c, and can protect the main drive wheel 12c and the slave drive wheel 11c.
  • the main transmission wheel 12c and the slave transmission wheel 11c are covered by the protective cover 70c, and the main transmission wheel 12c and the slave transmission wheel 11c can be prevented from being scratched by the user, thereby providing a safety protection function.
  • the transmission shaft 15c can be supported by the protective cover 70c to make the transmission shaft 15c rotate more smoothly.
  • a bearing may be mounted at the junction of the protective cover 70c and the drive shaft 15c so that the protective cover 70c supports the drive shaft 15c via the bearing.
  • the protective cover 70c can be fixedly coupled to the support frame 60c.
  • the other structure of the directional sprocket device 10c of the present embodiment is the same as that of the directional sprocket device of the second embodiment, and is not cumbersome here.
  • an embodiment of the present invention also discloses a pedal device 100, which includes a bracket 91, a directional sprocket device 10c as described above and fixed to the bracket 91, and a sprocket device respectively mounted on the sprocket device.
  • a foot pedal 92 at both ends of the drive shaft 15c of 10c, and a drive shaft 15c are mounted on the bracket 91.
  • the pedal device 100 can be driven forward in the forward pedal 92; at the same time, in the reverse pedal 92, The pedal device 100 is driven forward; the same as the drive shaft 15c can realize the forward rotation of the output shaft 22c, thereby improving the driving efficiency and bringing different riding pleasures.
  • the drive shaft 15c can be mounted to the bracket 91 through a bearing so that the drive shaft 15c can flexibly rotate on the bracket 91. In other embodiments, the drive shaft 15c can also be mounted to the bracket using the bearing pads.
  • the pedal device 100 is a bicycle
  • the transmission shaft 15c is installed in the shaft hole of the bicycle through the bicycle middle shaft bearing, and the support frame 60c of the directional sprocket device 10c is fixed on the bracket.
  • the directional sprocket device 10c is supported and fixed more stably.
  • the pedal device 100 may also be a pedal boat, a pedal generator, or the like that can be driven in both directions to output a one-way rotational operation.

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Abstract

一种定向传动机构（20）、使用该定向传动机构的定向链轮装置（10）及使用该定向链轮装置的脚踏设备。该定向传动机构（20）包括主动轴（21）、输出轴（22）、驱动输出轴（22）与主动轴（21）同向转动的同向轮组（40）、驱动输出轴（22）与主动轴（21）反向转动的反向轮组（30）和用于切换主动轴（21）带动同向轮组或反向轮组转动的切换机构（50）。使用同向轮组将主动轴（21）与输出轴（22）相连，并同时使用反向轮组将主动轴与输出轴相连，通过设置切换机构，通过切换机构来切换同向轮组或反向轮组的使用，从而保证输出轴始终能沿同一个方向转动，实现输出轴的定向转动，而不会随主动轴转向的改变而改变。

Description

定向传动机构、 定向链轮装置及脚踏设备
技术领域
[0001] 本发明属于传动机构领域， 尤其涉及一种定向传动机构、 使用该定向传动机构 的定向链轮装置和使用该定向链轮装置的脚踏设备。
背景技术
[0002] 齿轮传动装置一般是将从动轮与输出轴相连， 主动轮与从动轮直接啮合或通过 惰轮啮合， 来改变输出轴相对于主动轮的转速、 扭矩或旋转方向。 现有齿轮传 动装置的主动轮转向改变吋， 输出轴的方向也会随之改变。 这种齿轮传动装置 在使用吋， 需要主动轮的驱动装置转向明确、 在安装吋转向要确定， 一旦驱动 装置反向转动吋， 则可能会损坏设备。 并且有吋在驱动装置反转吋， 还可能会 导致驱动装置做无用功， 降低能量利用率。
技术问题
[0003] 本发明的目的在于提供一种定向传动机构， 旨在解决现有齿轮传动装置的输出 轴的转向会随主动轴转向的改变而改变的问题。
问题的解决方案
技术解决方案
[0004] 本发明是这样实现的， 一种定向传动机构， 包括主动轴、 输出轴、 驱动所述输 出轴与所述主动轴同向转动的同向轮组、 驱动所述输出轴与所述主动轴反向转 动的反向轮组和用于切换所述主动轴带动所述同向轮组或所述反向轮组转动以 使所述输出轴定向转动的切换机构； 所述同向轮组连接所述主动轴与所述输出 轴， 所述反向轮组连接所述主动轴与所述输出轴。
[0005] 本发明使用同向轮组将主动轴与输出轴相连， 并同吋使用反向轮组将主动轴与 输出轴相连， 通过设置切换机构， 通过切换机构来切换同向轮组或反向轮组的 使用， 从而保证输出轴始终能沿同一个方向转动， 实现输出轴的定向转动， 而 不会随主动轴转向的改变而改变。
[0006] 本发明的另一目的在于提供一种定向链轮装置， 包括如上所述的定向传动机构 、 带动所述定向传动机构的主动轴转动的从传动轮、 驱动所述从传动轮转动的 主传动轮、 支撑所述主传动轮的传动轴和与所述输出轴相连的输出轮。
[0007] 本发明的定向链轮装置使用了上述定向传动机构， 从而可以使该定向链轮装置 的链轮正或反向转动吋,输出轴始终能沿同一个方向转动。
[0008] 本发明的另一目的在于提供一种脚踏设备， 包括车架、 如上所述的定向链轮装 置和用于带动所述定向链轮装置的传动轴转动的脚踏板， 所述传动轴安装于所 述车架上。
发明的有益效果
有益效果
[0009] 本发明的脚踏设备使用了上述定向链轮装置， 则在正向踏脚踏板吋， 可以驱动 该脚踏设备前行； 同吋， 在反向踏脚踏板吋， 也可以驱动该脚踏设备前行， 因 而提高了驱动效率， 也带来了不同的骑行乐趣。
对附图的简要说明
附图说明
[0010] 图 1是本发明实施例一提供的定向链轮装置的立体结构示意图；
[0011] 图 2是图 1的定向链轮装置中定向传动机构的分解结构示意图；
[0012] 图 3是图 2的定向传动机构的内部结构组装吋的示意图；
[0013] 图 4是图 3的定向传动机构的剖视结构示意图；
[0014] 图 5是图 3的定向传动机构的分解结构示意图；
[0015] 图 6是图 3的定向传动机构中切换机构切换吋的示意图。
[0016] 图 7是本实用新型实施例二提供的定向链轮传动装置的立体结构示意图；
[0017] 图 8是图 7的定向链轮传动装置的剖视结构示意图；
[0018] 图 9是图 7的定向链轮传动装置的分解结构示意图；
[0019] 图 10是图 7的定向链轮传动装置的定向传动机构中切换机构及第一主动齿轮和 第二主动齿轮的分解结构示意图；
[0020] 图 11是图 10的切换机构的分解结构示意图， 图中还示出了第一主动齿轮和第二 主动齿轮；
[0021] 图 12是图 10的切换机构及第一主动齿轮和第二主动齿轮组合吋的剖视结构示意 图。
[0022] 图 13是本实用新型实施例三提供的定向链轮装置的立体结构示意图；
[0023] 图 14是图 13的定向链轮装置的内部结构的立体示意图；
[0024] 图 15是图 14的定向链轮装置的剖视结构示意图；
[0025] 图 16是图 14的定向链轮装置的分解结构示意图；
[0026] 图 17是图 14的定向链轮装置的定向传动机构中切换机构及第一主动齿轮和第二 主动齿轮的分解结构示意图。
[0027] 图 18是本实用新型实施例提供的一种脚踏设备的立体结构示意图。
本发明的实施方式
[0028] 为了使本发明的目的、 技术方案及优点更加清楚明白， 以下结合附图及实施例 ， 对本发明进行进一步详细说明。 应当理解， 此处所描述的具体实施例仅仅用 以解释本发明， 并不用于限定本发明。
[0029] 实施例一：
[0030] 请参阅图 1-图 6， 本发明实施例提供的一种定向链轮装置 10， 包括主传动轮 12 、 传动链条 13、 定向传动机构 20、 从传动轮 11、 传动轴 15和输出轮 17， 主传动 轮 12和从传动轮 11均为链轮， 传动链条 13配合连接主传动轮 12与从传动轮 11， 从传动轮 11与定向传动机构 20相连， 输出轮 17用于输出动力， 主传动轮 12安装 在传动轴 15上， 通过传动轴 15支撑主传动轮 12， 同吋当传动轴 15转动吋， 会带 动主传动轮 12同步转动。
[0031] 请参阅图 2-图 6， 定向传动机构 20包括主动轴 21、 输出轴 22、 同向轮组 40、 反 向轮组 30和切换机构 50。 同向轮组 40连接主动轴 21与输出轴 22， 当主动轴 21带 动同向轮组 40转动， 来驱动输出轴 22转动吋， 可以使主动轴 21与输出轴 22同向 转动。 反向轮组 30连接主动轴 21与输出轴 22， 当主动轴 21带动反向轮组 30转动 ， 来驱动输出轴 22转动吋， 可以使主动轴 21与输出轴 22反向转动。 切换机构 50 用于切换主动轴 21是带动同向轮组 40转动， 还是带动反向轮组 30转动； 从而使 无论主动轴 21是正向转动， 还是反向转动， 均可以使输出轴 22沿同一个方向转 动， 不会随主动轴 21转向的改变而改变。 [0032] 本实施例中， 定向链轮装置 10的从传动轮 11与主动轴 21相连， 从而可以带动主 动轴 21转动。 该定向链轮装置 10使用了上述定向传动机构 20， 而该定向传动机 构 20中， 无论主动轴 21是正向转动还是反向转动， 均可以使输出轴 22沿同一个 方向转动， 不会随主动轴 21转向的改变而改变， 则可以使该定向链轮装置 10的 链轮正或反转吋,输出轴 22始终能沿同一个方向转动。 输出轮 17安装在输出轴 22 上， 从而当输出轴 22转动吋带动输出轮 17转动， 以输出动力。
[0033] 本实施例中， 将定向传动机构 20应用于定向链轮装置 10中， 在其它实施例中， 也可以将该定向传动机构 20应用在其它传动机构中， 也可以作为齿轮箱来使用 。 如将该定向传动机构 20与驱动电机相连， 通过驱动电机来带动定向传动机构 2 0的主动轴 21转动， 则无论驱动电机是正转还是反转均可以使用输出轴 22以同一 个方向转动。 从而可以方便驱动电机的安装； 另外， 在驱动电机反转吋仍然可 以通过该定向传动机构 20来正常输出， 可以充分利用驱动电机， 提高能量利用 率。 该定向传动机构 20还可以用来驱动多轮车、 履带车、 船、 发电机等设备。
[0034] 请参阅图 2、 图 4、 图 5和图 6， 进一步地， 切换机构 50包括第一啮合齿 52、 第二 啮合齿 53和滑动件； 第一啮合齿 52用于带动反向轮组 30转动， 第二啮合齿 53用 于带动同向轮组 40转动； 滑动件滑动安装于主动轴 21上， 用于配合连接第一啮 合齿 52或第二啮合齿 53， 进而带动反向轮组 30或同向轮组 40转动。 滑动件的一 端呈与第一啮合齿 52啮合的齿状， 滑动件的另一端呈与第二啮合齿 53啮合的齿 状， 主动轴 21上幵设有引导滑动件往返于第一啮合齿 52与第二啮合齿 53之间滑 动的滑槽 215。 通过滑动件在主动轴 21上滑动， 当将滑动件移动到与第一啮合齿 52啮合吋， 可以带动反向轮组 30转动， 而当滑动件移动到与第二啮合齿 53啮合 吋， 则可以带动同向轮组 40转动。
[0035] 本实施例中， 滑动件为滑块 51， 滑块 51滑动安装于滑槽 215中， 滑槽 215沿主动 轴 21的轴向设置， 第一啮合齿 52和第二啮合齿 53均为棘齿， 且第一啮合齿 52的 棘齿朝向与第二啮合齿 53的棘齿朝向相反。 滑块 51两端设有分别与第一啮合齿 5 2和第二啮合齿 53配合的棘齿。 请参阅图 6， 并为图 6中左右方向来进行具体说明 ， 但此处的左右方向仅是针对图 6方便描述， 并不限定各结构件的实际应用方向 ： 滑块 51左端的棘齿与第一啮合齿 52形成反向棘轮， 滑块 51右端的棘齿与第二 啮合齿 53形成正向棘轮。 当主动轴反转吋， 滑块 51受第二啮合齿 53的棘齿作用 ， 会推动滑块 51远离， 使滑块 51沿滑槽 215移动至第一啮合齿 52， 并与第一啮合 齿 52啮合， 在主动轴 21的带动下， 带动反向轮组 30转动， 进而在反向轮组 30的 带动下， 带动输出轴 22与主动轴 21反向转动， 同吋第二啮合齿 53与滑块 51脱幵 ， 同向轮组 40不会带动输出轴 22转动； 当主动轴 21正转吋， 第一啮合齿 52的棘 齿作用， 会推动滑块 51远离， 使滑块 51沿滑槽 215移动至第二啮合齿 53， 并与第 二啮合齿 53啮合， 同吋第一啮合齿 52与滑块 51脱幵， 反向轮组 30不再带动输出 轴 22转动； 而由于第一啮合齿 52的棘齿朝向与第二啮合齿 53的棘齿朝向相反， 则滑块 51与第二啮合齿 53啮合后， 会带动第二啮合齿 53转动， 以带动同向轮组 4 0转动， 进而带动输出轴 22与主动轴 21同向转动。 该结构可以实现自动切换主动 轴 21是带动同向轮组 40， 还是带动反向轮组 30转动； 且结构简单、 制作方便。
[0036] 进一步地， 滑块 51为多个， 对应的滑槽 215也设置为多个， 以便更好的进行传 动。 更进一步地， 滑块 51的截面可以呈平行四边形， 制作简单， 加工方便。
[0037] 本实施例中， 该定向传动机构 20应用于定向链轮装置 10中， 从传动轮 11安装在 主动轴 21的中间位置， 同向轮组 40与反向轮组 30分别设置在从传动轮 11的两侧 ， 则从传动轮 11中幵设有与主动轴 21配合的通孔 111， 而通孔 111中对应于滑槽 2 15的位置设有凹槽 112， 而沿主动轴 21的径向， 滑块 51凸出该滑槽 215， 并伸入 相应的凹槽 112中， 则在从传动轮 11转动吋， 可以通过滑块 51带动主动轴 21转动
[0038] 进一步地， 为了使从传动轮 11与同向轮组 40和反向轮组 30不直接接触， 从传动 轮 11与同向轮组 40间设有第一隔环 213， 从传动轮 11与反向轮组 30间设有第二隔 环 214。 并且可以降低从传动轮 11与同向轮组 40和反向轮组 30之间的磨损。
[0039] 在另一些实施例中， 从传动轮 11也可以与主动轴 21的一端固定相连， 而将同向 轮组 40和反向轮组 30设置在从传动轮 11的同一侧。
[0040] 在其它实施例中， 第一啮合齿 52和第二啮合齿 53均为棘齿， 且第一啮合齿 52的 棘齿朝向与第二啮合齿 53的棘齿朝向相反。 滑动件也可以是滑套， 而滑套的两 端呈齿状， 且分别设置与第一啮合齿 52和第二啮合齿 53相配合。 当滑套与第一 啮合齿 52啮合吋， 在主动轴 21的带动下， 带动反向轮组 30转动， 进而在反向轮 组 30的带动下， 带动输出轴 22与主动轴 21反向转动； 当主动轴 21变向吋， 第一 啮合齿 52也会反向， 同吋会推动滑套远离， 使滑套沿滑槽 215移动至第二啮合齿 53， 并与第二啮合齿 53啮合， 同吋第一啮合齿 52与滑套脱幵， 反向轮组 30不再 带动输出轴 22转动； 而由于第一啮合齿 52的棘齿朝向与第二啮合齿 53的棘齿朝 向相反， 则滑套与第二啮合齿 53啮合后， 会带动第二啮合齿 53转动， 以带动同 向轮组 40转动， 进而带动输出轴 22与主动轴 21同向转动。 该结构也可以实现自 动切换主动轴 21是带动同向轮组 40， 还是带动反向轮组 30转动。
[0041] 本实施例中， 同向轮组 40和反向轮组 30设置在主动轴 21的两端， 而滑动件设置 在同向轮组 40与反向轮组 30之间。
[0042] 在还有一些实施例中， 第一啮合齿 52和第二啮合齿 53也可以为普通轮齿， 滑动 件也可以是滑套， 而滑套的两端呈齿状， 主动轴 21上的滑槽 215设置呈螺旋状， 滑套中设置插入滑槽 215中的凸块， 当主动轴 21正向转动吋， 带动凸块沿滑槽 21 5移动， 同吋在凸块的带动下， 滑套随主动轴 21转动， 直至与第一啮合齿 52或第 二啮合齿 53啮合。 当设置的螺旋槽在主动轴 21正向转动吋， 凸块向同向轮组 40 移动吋， 则主动轴 21会带动滑套与第二啮合齿 53相连， 从而带动同向轮组 40转 动； 当主动轴 21变向反转吋， 则会带动套滑向反向轮组 30移动， 使滑套与第一 啮合齿 52相连， 从而带动反向轮组 30转动。 该结构也可以实现自动切换主动轴 2 1是带动同向轮组 40， 还是带动反向轮组 30转动。
[0043] 当然滑套的移动行程也可以由螺旋状滑槽 215的长度来决定。 在另一些实施例 中， 当在主动轴 21上设置螺旋状滑槽 215来带动并引导滑套移动吋， 可以在滑套 的一端设置外齿， 而相应的可以在同向轮组 40和反向轮组 30中设置与该外齿配 合的内齿， 则该结构可以将同向轮组 40和反向轮组 30设置在主动轴 21的同一侧 ， 通过主动轴 21带动滑套移动， 以实现滑套与同向轮组 40相连， 还是与反向轮 组 30相连。
[0044] 在其它实施例中， 也可以使用手动切换， 例如可以在主动轴 21上安装推动片和 啮合块， 通过推动片推动啮合块移动， 以使啮合块与同向轮组 40相连或与反向 轮组 30相连， 以实现手动切换。
[0045] 请参阅图 3、 图 4、 图 5和图 6， 反向轮组 30包括第一主动齿轮 31和第一从动齿轮 32， 第一主动齿轮 31的中心幵设有与主动轴 21配合的第一轴孔 311， 第一主动齿 轮 31套装于主动轴 21上， 第一啮合齿 52设于第一主动齿轮 31上。 第一从动齿轮 3 2与输出轴 22相连， 并且第一从动齿轮 32与第一主动齿轮 31啮合。 通过第一从动 齿轮 32与第一主动齿轮 31啮合， 从而第一从动齿轮 32与第一主动齿轮 31反向转 动， 以实现带动输出轴 22与主动轴 21反向转动。 本实施例中， 反向轮组 30仅为 两个齿轮， 结构简单、 成本低。 当反向轮组 30包括依次啮合的偶数个齿轮吋， 则可以保证首、 尾两个齿轮反向转动， 而可以带动输出轴 22与主动轴 21反向转 动。 则在其它实施例中， 反向轮组 30可以包括依次啮合的偶数个齿轮， 则位于 首部的齿轮为第一主动齿轮 31， 而位于尾部的齿轮为与输出轴 22相连的第一从 动齿轮 32。
[0046] 进一步地， 第一主动齿轮 31上靠近滑动件的一侧设有第一凸轮 312， 第一啮合 齿 52设于该第一凸轮 312远离第一主动齿轮 31的一侧上。 本实施例中， 第一啮合 齿 52设于第一轴孔 311中， 第一啮合齿 52设于第一轴孔 311靠近反向轮组 30的一 端。 该结构制作简单、 结构紧促， 且设置第一凸轮 312， 可以增加第一主动齿轮 31的强度。 在其它实施例中， 第一啮合齿 52也可以设置在第一凸轮 312上靠近滑 动件的侧面上。 本实施例中， 第一凸轮 312与第一主动齿轮 31是一体成型， 强度 高。 在其它实施例中， 也可以将第一凸轮 312与第一主动齿轮 31分幵制作， 再将 第一凸轮 312与第一主动齿轮 31固定连接。
[0047] 进一步地， 同向轮组 40包括第二主动齿轮 41、 第二从动齿轮 42和惰轮 43， 第二 主动齿轮 41的中心幵设有与主动轴 21配合的第二轴孔 411， 第二主动齿轮 41套装 于主动轴 21上， 第二啮合齿 53设于第二主动齿轮 41上。 第二从动齿轮 42与输出 轴 22相连， 第二从动齿轮 42与第二主动齿轮 41间隔设置， 惰轮 43配合啮合第二 主动齿轮 41与第二从动齿轮 42。 通过惰轮 43配合啮合第二主动齿轮 41与第二从 动齿轮 42， 第二主动齿轮 41与惰轮 43反向转动， 而惰轮 43与第二从动齿轮 42反 向转动， 则第二从动齿轮 42与第二主动齿轮 41同向转动， 以实现带动输出轴 22 与主动轴 21同向转动。 本实施例中， 同向轮组 40仅为三个齿轮， 结构简单、 成 本低。 当同向轮组 40包括依次啮合的奇数个齿轮吋， 则可以保证首、 尾两个齿 轮同向转动， 而可以带动输出轴 22与主动轴 21同向转动。 则在其它实施例中， 同向轮组 40可以包括依次啮合的奇数个齿轮， 则位于首部的齿轮为第二主动齿 轮 41， 而位于尾部的齿轮为与输出轴 22相连的第二从动齿轮 42， 中间奇数个齿 轮为惰轮 43。
[0048] 进一步地， 第二主动齿轮 41上靠近滑动件的一侧设有第二凸轮 412， 第二啮合 齿 53设于该第二凸轮 412远离第二主动齿轮 41的一侧上。 本实施例中， 第二啮合 齿 53设于第二轴孔 411中， 第二啮合齿 53设于第二轴孔 411靠近同向轮组 40的一 端。 该结构制作简单、 结构紧促， 且设置第二凸轮 412， 可以增加第二主动齿轮 41的强度。 在其它实施例中， 第二啮合齿 53也可以设置在第二凸轮 412上靠近滑 动件的侧面上。 本实施例中， 第二凸轮 412与第二主动齿轮 41是一体成型， 强度 高。 在其它实施例中， 也可以将第二凸轮 412与第二主动齿轮 41分幵制作， 再将 第二凸轮 412与第二主动齿轮 41固定连接。
[0049] 进一步地， 本实施例中， 第一主动齿轮 31与第一从动齿轮 32具有相同的模数齿 数和相等的中心距， 第二主动齿轮 41与第二从动齿轮 42具有相同的模数齿数和 相等的中心距， 则不论是正转还是反转， 主动轴 21与输出轴 22均为同速转动， 当然第一主动齿轮 31与第一从动齿轮 32及第二主动齿轮 41与第二从动齿轮 42也 可以采用不同齿数和变速比。
[0050] 进一步地， 请参阅图 1、 图 2、 图 3和图 4， 该定向传动机构 20还包括用于支撑主 动轴 21、 同向轮组 40、 反向轮组 30以及输出轴 22的支撑架 60。 设置支撑架 60来 支撑住主动轴 21、 同向轮组 40、 反向轮组 30和输出轴 22， 可以更好的组装该定 向传动机构 20， 以方便该定向传动机构 20的安装使用。
[0051] 具体地， 支撑架 60包括第一支撑板 61、 第二支撑板 62和连接第一支撑板 61与第 二支撑板 62的连接块 63， 主动轴 21的两端分别与第一支撑板 61和第二支撑板 62 枢接， 输出轴 22与第一支撑板 61枢接。
[0052] 进一步地， 连接块 63为两个， 分别设置在第一支撑板 61的上、 下两侧， 并且连 接块 63的两端分别通过螺钉 631与第一支撑板 61和第二支撑板 62相连。
[0053] 进一步地， 该支撑架 60还包括支撑惰轮 43的支撑轴 65， 支撑轴 65与第一支撑板 61相连， 惰轮 43枢接在支撑轴 65上。 进一步地， 为了更好的支撑住支撑轴 65， 保证惰轮 43平稳转动， 该支撑架 60还包括第三支撑板 64， 第三支撑板 64与第一 支撑板 61位于主动轴 21的同一端， 并且主动轴 21枢接在第三支撑板 64上。 从而 可以通过第三支撑板 64和第一支撑板 61来支撑住支撑轴 65。 进一步地， 为了使 惰轮 43能更灵活地在支撑轴 65上转动， 支撑轴 65上对应于惰轮 43的位置还套装 有滑动套 651。
[0054] 本实施例中， 为了更好的将第一主动齿轮 31和第二主动齿轮 41安装在主动轴 21 的两端， 防止第一主动齿轮 31和第二主动齿轮 41脱落， 主动轴 21的两端分别套 装在第一抵顶套 211和第二抵顶套 212， 第一抵顶套 211位于在第二主动齿轮 41远 离第一主动齿轮 31的一侧， 第二抵顶套 212位于在第一主动齿轮 31远离第二主动 齿轮 41的一侧。
[0055] 进一步地， 为了使第一支撑板 61与第三支撑板 64更好的安装在主动轴 21上， 该 支撑架 60还包括定位套 611， 定位套 611套装在主动轴 21上， 第一支撑板 61与第 三支撑板 64安装在定位套 611上。 第一支撑板 61和第三支撑板 64可以与定位套 61 1通过过盈配合相连。 进一步地， 为了防止第三支撑板 64从定位套 611上脱落， 可以使用卡持环 641将第三支撑板 64卡在定位套 611上。 进一步地， 为了使主动 轴 21在定位套 611中更灵活的转动， 定位套 611中还安装有轴套 612， 以降低主动 轴 21受到的摩擦力。
[0056] 进一步地， 本实施例中， 该定向链轮装置 10应用于脚踏设备上， 则该定向传动 机构 20应用于脚踏设备上， 因而将输出轴 22可以为脚踏设备的后轮花毂， 输出 轴 22的一端与第一从动齿轮 32相连， 而第二从动齿轮 42与第一从动齿轮 32相连 ， 主动轴 21通过心轴与第一支撑板 61相连。 在其它实施例中， 当该定向传动机 构 20应用在其它设备上吋， 可以直接将第一从动齿轮 32和第二从动齿轮 42安装 在输出轴 22上。
[0057] 进一步地， 该定向传动机构 20还包括连接第二从动齿轮 42与第一从动齿轮 32的 连接盘 24， 第二从动齿轮 42和第一从动齿轮 32分别设置在连接盘 24的两侧。 设 置连接盘 24将第二从动齿轮 42和第一从动齿轮 32分幵， 防止第二从动齿轮 42和 第一从动齿轮 32相互影响， 便于同向轮组 40和反向轮组 30的安装。
[0058] 进一步地， 本实施例中， 输出轮 17为飞轮， 输出轴 22的一端与输出轮 17相连， 而输出轮 17与同向轮组 40或反向轮组 30相连， 设置飞轮， 当主动轴 21静止吋， 可以保证输出轴 22正常转动。 本实施例中， 输出轮 17固定在连接盘 24上。 输出 轮 17设置在第一从动齿轮 32远离第二从动齿轮 42的一侧。 通过同向轮组 40或反 向轮组 30带动输出轮 17转动， 再带动输出轴 22转动， 以输出动力。 在其它实施 例中， 也可以将同向轮组 40和反向轮组 30直接与输出轴 22相连。
[0059] 进一步地， 本实施例中， 输出轴 22可以为自行车的后轮轴套， 该定向链轮装置
10还包括支撑该后轮轴套的固定轴 66。 设置固定轴 66， 以便安装在自行车的后 轮上， 并支撑住输出轴 22。
[0060] 请参阅图 1， 本发明实施例还公幵一种脚踏设备， 包括车架、 如上所述的定向 链轮装置 10和用于带动定向链轮装置 10的传动轴 15转动的脚踏板， 传动轴 15安 装于车架上。 该脚踏设备使用了上述定向链轮装置 10， 则在正向踏脚踏板吋， 可以驱动该脚踏设备前行； 同吋， 在反向踏脚踏板吋， 也可以驱动该脚踏设备 前行。 当定向链轮装置 10中安装有飞轮吋， 该脚踏设备的脚踏板不动吋， 脚踏 设备可以向前后自由推行。
[0061] 实施例二：
[0062] 请参阅图 7-图 12， 本实施例的定向链轮装置 10b与实施例一的定向链轮装置的 区别为： 本实施例的定向链轮装置 10b， 包括传动轴 15b、 变速轮组 16b、 驱动齿 轮 19b、 输出轮 17b、 定向传动机构 20b、 主传动轮 12b、 从传动轮 l ib和传动链条 13b; 其中， 主传动轮 12b与从传动轮 l ib均为链轮， 传动链条 13b配合连接主传 动轮 12b与从传动轮 l ib, 从传动轮 l ib与定向传动机构 20b相连， 主传动轮 12b安 装在传动轴 15b上， 传动轴 15b转动吋会带动主传动轮 12b转动， 进而经传动链条 13b带动从传动轮 l lb、 定向传动机构 20b转动； 输出轮 17b与定向传动机构 20b相 连， 当定向传动机构 20b转动吋， 可以带动输出轮 17b转动， 并且无论从传动轮 1 lb传递来的转动方向正反， 均可以通过定向传动机构 20b转换为使输出轮 17b沿 同一个方向转动； 驱动齿轮 19b与变速轮组 16b同轴相连， 通过驱动齿轮 19b带动 变速轮组 16b转动， 以便输出动力； 变速轮组 16b套装于传动轴 15b上， 并且变速 轮组 16b可以在传动轴 15b上转动， 以通过传动轴 15b来支撑变速轮组 16b， 使该 定向链轮装置 10b的结构更为紧凑； 输出轮 17b为齿轮， 驱动齿轮 19b与输出轮 17 b啮合， 当定向传动机构 20b带动输出轮 17b转动吋， 可以带动驱动齿轮 19b转动 ， 进而带动变速轮组 16b转动， 输出动力。
[0063] 在传动轴 15b上转动安装变速轮组 16b和固定安装主传动轮 12b， 并设置定向传 动机构 20b、 从传动轮 l lb、 驱动齿轮 19b和输出轮 17b， 主传动轮 12b使用传动链 条 13b与从传动轮 l ib相连， 当无论传动轴 15b正转还是反转， 均可以通过定向传 动机构 20b转换为同一方向带动输出轮 17b转动， 进而带动变速轮组 16b始终沿同 一方向转动， 保证传动轴 15b与主传动轮 12b无论正转还是反转均可以使输出轮 1 7b与变速轮组 16b定向输出。
[0064] 请参阅图 7、 图 8和图 11， 定向传动机构 20b包括主动轴 21b、 输出轴 22b、 同向 轮组 40b、 反向轮组 30b和切换机构 50b。 同向轮组 40b连接主动轴 21b与输出轴 22 b， 当主动轴 21b带动同向轮组 40b转动， 来驱动输出轴 22b转动吋， 可以使主动 轴 21b与输出轴 22b同向转动。 反向轮组 30b连接主动轴 21b与输出轴 22b， 当主动 轴 21b带动反向轮组 30b转动， 来驱动输出轴 22b转动吋， 可以使主动轴 21b与输 出轴 22b反向转动。 切换机构 50b用于切换主动轴 21b是带动同向轮组 40b转动， 还是带动反向轮组 30b转动； 从而使无论主动轴 21b是正向转动， 还是反向转动 ， 均可以使输出轴 22b沿同一个方向转动， 不会随主动轴 21b转向的改变而改变 ， 以实现定向传动。 从传动轮 l ib安装于主动轴 21b上， 输出轮 17b安装于输出轴 22b上， 从而传动轴 15b的转动可以传递到主动轴 21b上， 以使定向传动机构 20b 进行转向改变， 进而带动输出轮 17b转动， 以便将动力输出到变速轮组 16b。
[0065] 请参阅图 8、 图 10、 图 11和图 12， 进一步地， 切换机构 50b包括第一啮合齿 52b 、 第二啮合齿 53b和若干滑块 51b; 第一啮合齿 52b用于带动反向轮组 30b转动， 第二啮合齿 53b用于带动同向轮组 40b转动； 第一啮合齿 52b和第二啮合齿 53b均 为棘齿， 且第一啮合齿 52b的朝向与第二啮合齿 53b的朝向相反， 滑块 51b滑动安 装于主动轴 21b上， 用于配合连接第一啮合齿 52b或第二啮合齿 53b， 进而带动反 向轮组 30b或同向轮组 40b转动。 滑块 51b的一端用来与第一啮合齿 52b啮合， 滑 块 51b的另一端用来与第二啮合齿 53b啮合， 主动轴 21b上幵设有引导各滑块 51b 往返于第一啮合齿 52b与第二啮合齿 53b之间滑动的滑槽 215b。
[0066] 进一步地， 该定向传动机构 10b还包括连接套 110b， 从传动轮 l ib固定在连接套
110b上。 设置连接套 110b， 可以将滑块 51b限定在主动轴 21b上， 以防止滑块 51b 掉落。 进一步地， 连接套 110b中幵设有与主动轴 21b配合的通孔 l l lb， 而通孔 11 lb的侧壁上对应于滑槽 215b的位置设有凹槽 112b， 而沿主动轴 21b的径向， 滑块 51b凸出该滑槽 215b， 并伸入相应的凹槽 112b中。
[0067] 本实施例中， 从传动轮 l ib固定在连接套 110b上， 以通过从传动轮 l ib带动连接 套 110b转动， 进而带动主动轴 21b转动。 更进一步地， 从传动轮 l ib可以与连接 套 110b—体成型， 以方便加工制作。 在其它实施例中， 从传动轮 l ib也可以直接 固定在主动轴 21b上。
[0068] 请参阅图 12， 并为图 12中左右方向来进行具体说明， 但此处的左右方向仅是针 对图 12方便描述， 并不限定各结构件的实际应用方向： 滑块 51b左端与第一啮合 齿 52b形成反向棘轮， 滑块 51b右端与第二啮合齿 53b形成正向棘轮。 当主动轴 21 b正转吋， 滑块 51b受第二啮合齿 53b斜面作用向右滑动， 与第二啮合齿 53b脱幵 ， 然后滑块 51b与第一啮合齿 52b啮合， 带动反向轮组 30b转动， 进而在反向轮组 30b的带动下， 带动输出轴 22b与主动轴 21b反向转动； 当主动轴 21b反转吋， 滑 块 51b受第一啮合齿 52b斜面作用向左滑动， 第一啮合齿 52b与滑块 51b脱幵， 然 后与第二啮合齿 53b啮合， 反向轮组 30b不再带动输出轴 22b转动； 而由于第一啮 合齿 52b的朝向与第二啮合齿 53b的朝向相反， 则滑块 51b与第二啮合齿 53b啮合 后， 会带动第二啮合齿 53b转动， 以带动同向轮组 40b转动， 进而带动输出轴 22b 与主动轴 21b同向转动。 该结构可以实现根据主动轴 21b转动方向， 自动切换是 带动同向轮组 40b， 还是带动反向轮组 30b转动； 且结构简单、 制作方便、 运动 可靠。 滑块 51b为多个， 对应的滑槽 215b也设置为多个， 以便更好的进行传动。 进一步地， 滑块 51b的截面可以呈平行四边形， 制作简单， 加工方便。
[0069] 本实施例中， 同向轮组 40b和反向轮组 30b转动安装在主动轴 21b的两端， 而滑 块 5 lb设置在同向轮组 40b与反向轮组 30b之间。
[0070] 请参阅图 8、 图 10、 图 11和图 12， 进一步地， 连接套 110b的两端对应于各凹槽 1 12b的位置分别幵设有幵孔 113b， 各幵孔 113b中安装有弹性定位组件 18， 滑块 51 b的两端部幵设有与弹性定位组件 18配合的定位槽 511b， 当弹性定位组件 18伸入 相应的定位槽 511b中吋， 可以将对应的滑块 51b定位住。 该结构设计， 当滑块 51 b与第一啮合齿 52b啮合吋， 从传动轮 l ib—侧的连接套 110b上的弹性定位组件 18 将滑块 51b定位住， 可以防止滑块 51b与第一啮合齿 52b脱幵， 以便更好的带动反 向轮组 30b转动； 而当主动轴 21b变向吋， 滑块 51b在第一啮合齿 52b的推动下向 第二啮合齿 53b移动， 当滑块 51b与第二啮合齿 53b啮合吋， 从传动轮 l ib另一侧 的连接套 110b上的弹性定位组件 18可产生一定的轴向弹性定位力矩， 可将滑块 5 lb弹性定位住， 又可使滑块 5 lb在受到较大轴向力吋可以轴向滑动。
[0071] 进一步地， 弹性定位组件 18包括弹珠 181、 弹簧 182和锁定块 183， 并且弹珠 181 、 弹簧 182、 锁定块 183依次安装在相应的幵孔 113b中， 弹珠 181和锁定块 183分 别位于弹簧 182的两端， 弹簧 182朝向滑块 51b方向抵顶弹珠 181， 而弹珠 181伸入 滑块 51b的定位槽 511b中吋， 则可以将滑块 51b定位住， 而滑块 51b在主动轴 21b 上滑动吋， 弹珠 181又可以收于幵孔 113b中； 锁定块 183安装在幵孔 113b中， 可 以防止弹簧 182从幵孔 113b中脱落。 本实施例中， 锁定块 183可以是螺帽， 结构 简单、 安装方便。 在其它实施例中， 弹性定位组件 18也可以为弹性伸缩杆。
[0072] 进一步地， 请参阅图 7、 图 8、 图 9和图 10， 该定向链轮装置 10b还包括用于支撑 主动轴 21b、 同向轮组 40b、 反向轮组 30b、 传动轴 15b以及输出轴 22b的支撑架 60 b。 设置支撑架 60b来支撑住主动轴 21b、 同向轮组 40b、 反向轮组 30b、 传动轴 15 b和输出轴 22b， 可以更好的组装该定向传动机构 20b， 以方便该定向传动机构 20 b的安装使用。
[0073] 支撑架 60b包括第一支撑板 61b和第二支撑板 62b， 第二支撑板 62b呈 U型， 其两 端与第一支撑板 61b相连， 通过第一支撑板 61b和第二支撑板 62b来支撑住主动轴 21b、 输出轴 22b和传动轴 15b， 以方便组装该定向链轮装置 10b。
[0074] 该定向链轮装置 10b还包括 U型架 64b， U型架 64b的一侧与第二支撑板 62b的中 部相连， 且 U型架 64b位于第二支撑板 62b远离第一支撑板 61b的一侧， 输出轴 21 的一端穿过 U型架 64b的两端部与输出轮 17b相连， 而输出轮 17b与定向传动机构 2 Ob分别位于 U型架 64b的两侧。 设置 U型架 64b， 可以调节该定向链轮装置 10b宽度 ， 方便将该定向链轮装置 10b配合安装在自行车等脚踏设备的支架上， 方便不同 的脚踏设备安装使用。
[0075] 进一步地， 该定向链轮装置 10b还包括保护罩 70， 保护罩 70罩住定向传动机构 2 0b、 主传动轮 12b、 从传动轮 l ib及输出轮 17b， 从而即起到保护定向传动机构 20 b、 主传动轮 12b、 从传动轮 l ib及输出轮 17b的作用， 同吋还可以防止人员接触 定向传动机构 20b、 主传动轮 12b、 从传动轮 l ib及输出轮 17b， 起到保护人员安 全的作用。 保护罩 70b包括相互扣合的第一罩 71b和第二罩 72b， 从而方便加工以 及各部件的组装。
[0076] 进一步地， 该支撑架 60b还包括支撑惰轮 43b的支撑轴 65b， 支撑轴 65b与第一支 撑板 61b相连， 惰轮 43b枢接在支撑轴 65b上。 进一步地， 为了保护惰轮 43b， 支 撑轴 65b上还套装有轴套 431b， 惰轮 43b安装在轴套 431b上。 为了防止惰轮 43b脱 落， 支撑轴 65b上安装有第一卡环 432b。 同理， 为了防止输出轮 17b脱落， 输出 轴 22b上还安装有第二卡环 171b。
[0077] 本实施例中， 为了更好的将第一主动齿轮 31b和第二主动齿轮 41b安装在主动轴
21b的两端， 防止第一主动齿轮 31b和第二主动齿轮 41b脱落， 主动轴 21b的两端 分别套装在第一抵顶套 21 lb和第二抵顶套 212b， 第一抵顶套 21 lb位于在第二主 动齿轮 41b远离第一主动齿轮 31b的一侧， 第二抵顶套 212b位于在第一主动齿轮 3 lb远离第二主动齿轮 41b的一侧。 同理， 为了更好的将第一从动齿轮 32b和第二 从动齿轮 42b安装在输出轴 22b上， 输出轴 22b上还安装有第一挡套 221b和第二挡 套 222b， 第一挡套 221b位于第二从动齿轮 42b远离第一从动齿轮 32b的一侧， 第 二挡套 222b位于第一从动齿轮 32b远离第二从动齿轮 42b的一侧。 通过第一挡套 2 21b和第二挡套 222b抵挡住第二从动齿轮 42b和第一从动齿轮 32b， 防止第一从动 齿轮 32b和第二从动齿轮 42b在输出轴 22b上移动。
[0078] 进一步地， 为了使驱动齿轮 19b在传动轴 15b上灵活转动， 传动轴 15b上还安装 有支撑轴承 191b， 驱动齿轮 19b安装在支撑轴承 191b上。
[0079] 进一步地， 变速轮组 16b包括多个输出链轮 161b， 多个输出链轮 161b同轴设置 ， 且沿传动轴 15b的轴向多个输出链轮 161b的直径依次减小。 该结构设计， 在使 用吋， 通过不同的输出链轮 161b输出， 可以输出不同的转速比， 以实现调速的 功能。 本实施例中， 由传动轴 15b的中部向远离定向传动机构 20b—端的方向， 多个输出链轮 161b的直径依次增加。 在其它实施例中， 由传动轴 15b远离定向传 动机构 20的一端朝向该传动轴 15b中部的方向， 多个输出链轮 161b的直径依次减 小。 本实施例中， 输出链轮 161b为三个， 在其它实施例中， 输出链轮 161b也可 以为更多个。
[0080] 本实施例的定向链轮装置 10b的其它结构与实施例一的定向链轮装置的其它结 构相同， 在此不再累赘。
[0081] 请参阅图 7， 本实用新型实施例还公幵一种脚踏设备， 包括支架、 如上所述的 定向链轮装置 10b和分别安装于传动轴 15b两端的脚踏板， 传动轴 15b安装在支架 上。 该脚踏设备使用了上述定向链轮装置 10b， 则在正向踏脚踏板吋， 可以驱动 该脚踏设备前行； 同吋， 在反向踏脚踏板吋， 也可以驱动该脚踏设备前行； 同 吋由于实现了传动轴正、 反转都能驱动输出轴正转， 因而提高了驱动效率， 也 带来了不同的骑行乐趣。
[0082] 该脚踏设备可以是自行车、 脚踏船、 脚踏发电机等需要单向转动运行的设备。
[0083] 实施例三：
[0084] 请参阅图 13-图 17， 本实施例的定向链轮装置 10c与实施例一的定向链轮装置的 区别为： 该定向链轮装置 10c， 包括传动轴 15c、 变速轮组 16c、 驱动链轮 19c、 输 出轮 17c、 定向传动机构 20c、 主传动轮 12c、 从传动轮 11c和驱动链条 192c; 其中 ， 输出轮 17c为链轮， 主传动轮 12c与从传动轮 11c均为齿轮， 且主传动轮 12c与从 传动轮 11c啮合， 主传动轮 12c安装在传动轴 15c上， 从传动轮 11c与定向传动机构 20c相连， 传动轴 15c转动吋会带动主传动轮 12c转动， 进而带动从传动轮 l lc、 定 向传动机构 20c转动； 输出轮 17c与定向传动机构 20c相连， 当定向传动机构 20c转 动吋， 可以带动输出轮 17c转动， 并且无论从传动轮 11c传递来的转动方向正反， 均可以通过定向传动机构 20c转换为使输出轮 17c沿同一个方向转动； 驱动链轮 19 c与变速轮组 16c同轴相连， 通过驱动链轮 19c带动变速轮组 16c转动， 以便输出动 力; 变速轮组 16c套装于传动轴 15c上， 并且变速轮组 16c可以在传动轴 15c上转动 ， 以通过传动轴 15c来支撑变速轮组 16c， 使该定向链轮装置 10c的结构更为紧凑 ； 驱动链条 192c配合连接驱动链轮 19c与输出轮 17c， 当定向传动机构 20c带动输 出轮 17c转动吋， 可以经驱动链条 192c带动驱动链轮 19c转动， 进而带动变速轮组 16c转动， 输出动力。
[0085] 在传动轴 15c上转动安装变速轮组 16c和固定安装主传动轮 12c， 并设置定向传 动机构 20c、 从传动轮 l lc、 驱动链轮 19c和输出轮 17c， 主传动轮 12c带动从传动 轮 l ie转动， 无论传动轴 15c正转还是反转， 均可以通过定向传动机构 20c转换为 同一方向带动输出轮 17c转动， 进而带动变速轮组 16c始终沿同一方向转动， 保证 传动轴 15c无论正转还是反转均可以使变速轮组 16c定向输出。
[0086] 请参阅图 14、 图 15和图 16， 定向传动机构 20c包括主动轴 21c、 输出轴 22c、 同 向轮组 40c、 反向轮组 30c和切换机构 50c。 同向轮组 40c连接主动轴 21c与输出轴 2 2c , 当主动轴 21c带动同向轮组 40c转动， 来驱动输出轴 22c转动吋， 可以使主动 轴 21c与输出轴 22c同向转动。 反向轮组 30c连接主动轴 21c与输出轴 22c， 当主动 轴 21c带动反向轮组 30c转动， 来驱动输出轴 22c转动吋， 可以使主动轴 21c与输出 轴 22c反向转动。 切换机构 50c用于切换主动轴 21c是带动同向轮组 40c转动， 还是 带动反向轮组 30c转动； 从而使无论主动轴 21c是正向转动， 还是反向转动， 均可 以使输出轴 22c沿同一个方向转动， 不会随主动轴 21c转向的改变而改变， 以实现 定向传动。 从传动轮 11c安装于主动轴 21c上， 输出轮 17c安装于输出轴 22c上， 从 而传动轴 15c的转动可以传递到主动轴 21c上， 以使定向传动机构 20c进行转向改 变， 进而带动输出轮 17c转动， 以便将动力输出到变速轮组 16c。
[0087] 请参阅图 14、 图 15、 图 16和图 17， 进一步地， 切换机构 50c包括第一啮合齿 52c 、 第二啮合齿 53c和滑套 51c; 第一啮合齿 52c用于带动反向轮组 30c转动， 第二啮 合齿 53c用于带动同向轮组 40c转动； 第一啮合齿 52c和第二啮合齿 53c均为棘齿， 第一啮合齿 52c的朝向与第二啮合齿 53c的朝向相反， 第一啮合齿 52c、 滑套 51c和 第二啮合齿 53c依次套装于主动轴 21c上， 滑套 51c的两端分别设有用于与第一啮 合齿 52c和第二啮合齿 53c啮合的棘齿 515c。 滑套 51c的一端的棘齿 515c用来与第 一啮合齿 52c啮合， 滑套 51c的另一端的棘齿 515c用来与第二啮合齿 53c啮合， 进 而带动反向轮组 30c或同向轮组 40c转动。 主动轴 21c上的滑槽 215c呈螺旋状， 以 使主动轴 21c上形成螺旋外齿， 滑套 51c中设有与螺旋外齿啮合的螺旋内齿 516c。 在从传动轮 11c转动吋， 带动主动轴 21c转动， 滑套 51c的螺旋内齿 516c与主动轴 2 lc上螺旋外齿啮合， 则可以推动滑套 51c在主动轴 21c上移动。 当主动轴 21c反转 吋， 可以推动滑套 51c向第一啮合齿 52c方向移动， 以使滑套 51c与第一啮合齿 52c 啮合， 以带动第一啮合齿 52c转动， 并带动带动反向轮组 30c转动， 进而使输出轴 22c与主动轴 21c反向转动； 当主动轴 21c正转吋， 可以推动滑套 51c向第二啮合齿 53c方向移动， 以使滑套 51c与第二啮合齿 53c啮合， 以带动第二啮合齿 53c转动， 并带动同向轮组 40c转动， 进而使输出轴 22c与主动轴 21c同向转动。
[0088] 请参阅图 13、 图 16和图 17， 并以图 17中左右方向来进行具体说明， 但此处的左 右方向仅是针对图方便描述， 并不限定各结构件的实际应用方向： 当传动轴 15c 正转吋， 带动主动轴 21c反转吋， 滑套 51c受主动轴 21c上螺旋外齿作用向右滑动 ， 与第二啮合齿 53c脱幵， 然后滑套 51c与第一啮合齿 52c啮合， 带动反向轮组 30c 转动， 进而在反向轮组 30c的带动下， 带动输出轴 22c与主动轴 21c反向转动， 使 输出轴 22c与传动轴 15c同向转动； 当传动轴 15c反转吋， 带动主动轴 21c正转吋， 滑套 51c受主动轴 21c上螺旋外齿作用向左滑动， 与第一啮合齿 52c脱幵， 然后滑 套 51c与第二啮合齿 53c啮合， 带动同向轮组 40c转动， 进而在同向轮组 40c的带动 下， 带动输出轴 22c与主动轴 21c同向转动， 使输出轴 22c与传动轴 15c反向转动。 该结构可以实现根据主动轴 21c转动方向， 自动切换是带动同向轮组 40c， 还是带 动反向轮组 30c转动； 且结构简单、 制作方便、 运动可靠。
[0089] 进一步地， 该定向链轮装置 10c还包括第一轴承 54c和第二轴承 55c， 第一轴承 5 4c和第二轴承 55c均安装于主动轴 21c上， 且滑套 51c位于第一轴承 54c与第二轴承 55c之间， 通过第一轴承 54c支撑第一啮合齿 52c， 通过第二轴承 55c支撑第二啮合 齿 53c， 以便第一啮合齿 52c和第二啮合齿 53c可以在主动轴 21c上灵活转动， 同吋 可以防止减少主动轴 21c与第一啮合齿 52c和第二啮合齿 53c间的磨损。
[0090] 请参阅图 14、 图 15、 图 16和图 17， 反向轮组 30c包括第一主动齿轮 31c和第一从 动齿轮 32c， 第一主动齿轮 31c的中心幵设有与主动轴 21c配合的第一轴孔 311c， 第一主动齿轮 31c套装于主动轴 21c上， 第一啮合齿 52c设于第一主动齿轮 31c上。 第一从动齿轮 32c与输出轴 22c相连， 并且第一从动齿轮 32c与第一主动齿轮 31c啮 合。 通过第一从动齿轮 32c与第一主动齿轮 31c啮合， 从而第一从动齿轮 32c与第 一主动齿轮 31c反向转动， 以实现带动输出轴 22c与主动轴 21c反向转动。 本实施 例中， 反向轮组 30c仅为两个齿轮， 结构简单、 成本低。 当反向轮组 30c包括依次 啮合的偶数个齿轮吋， 则可以保证首、 尾两个齿轮反向转动， 而可以带动输出 轴 22c与主动轴 21c反向转动。 则在其它实施例中， 反向轮组 30c可以包括依次啮 合的偶数个齿轮， 则位于首部的齿轮为第一主动齿轮 31c， 而位于尾部的齿轮为 与输出轴 22c相连的第一从动齿轮 32c。
[0091] 进一步地， 第一主动齿轮 31c上靠近滑动件的一侧设有第一凸轮 312c， 第一啮 合齿 52c设于该第一凸轮 312c远离第一主动齿轮 31c的一侧上。 本实施例中， 第一 啮合齿 52c设置在第一凸轮 312(：的侧面上。 本实施例中， 第一凸轮 312c与第一主 动齿轮 31c是一体成型， 强度高。 在其它实施例中， 也可以将第一凸轮 312c与第 一主动齿轮 31c分幵制作， 再将第一凸轮 312c与第一主动齿轮 31c固定连接。
[0092] 进一步地， 同向轮组 40c包括第二主动齿轮 41c、 第二从动齿轮 42c和惰轮 43c， 第二主动齿轮 41c的中心幵设有与主动轴 21c配合的第二轴孔 411c， 第二主动齿轮 41c套装于主动轴 21c上， 第二啮合齿 53c设于第二主动齿轮 41c上。 第二从动齿轮 42c与输出轴 22c相连， 第二从动齿轮 42c与第二主动齿轮 4^间隔设置， 惰轮 43c 配合啮合第二主动齿轮 41c与第二从动齿轮 42c。 通过惰轮 43c配合啮合第二主动 齿轮 41c与第二从动齿轮 42c， 第二主动齿轮 41c与惰轮 43c反向转动， 而惰轮 43c 与第二从动齿轮 42c反向转动， 则第二从动齿轮 42c与第二主动齿轮 41c同向转动 ， 以实现带动输出轴 22c与主动轴 21c同向转动。 本实施例中， 同向轮组 40c仅为 三个齿轮， 结构简单、 成本低。 当同向轮组 40c包括依次啮合的奇数个齿轮吋， 则可以保证首、 尾两个齿轮同向转动， 而可以带动输出轴 22c与主动轴 21c同向转 动。 则在其它实施例中， 同向轮组 40c可以包括依次啮合的奇数个齿轮， 则位于 首部的齿轮为第二主动齿轮 41c， 而位于尾部的齿轮为与输出轴 22c相连的第二从 动齿轮 42c， 中间奇数个齿轮为惰轮 43c。
[0093] 进一步地， 第二主动齿轮 41c上靠近滑动件的一侧设有第二凸轮， 第二啮合齿 5 3c设于该第二凸轮远离第二主动齿轮 41c的一侧上。 本实施例中， 第二啮合齿 53c 设置在第二凸轮的侧面上。 本实施例中， 第二凸轮 412c与第二主动齿轮 41c是一 体成型， 强度高。 在其它实施例中， 也可以将第二凸轮 412c与第二主动齿轮 41c 分幵制作， 再将第二凸轮 412c与第二主动齿轮 41c固定连接。
[0094] 请参阅图 13、 图 14、 图 15和图 16， 该定向链轮装置 10c还包括支撑架 60c， 主动 轴 21c及输出轴 22c枢接于支撑架 60c中， 从传动轮 11c和输出轮 17c分别位于支撑 架 60c的相对两侧。 将主动轴 21c及输出轴 22c枢接于支撑架 60c中， 从而可以通过 支撑架 60c来支撑定向传动机构 20c， 并且可以起到保护定向传动机构 20c的作用 。 另外， 当使用该定向链轮装置 10c吋， 可以将支撑架 60c固定住， 进而支撑住定 向传动机构 20c。 进一步地， 支撑架 60c中可以安装支撑轴 65c， 以支撑同向轮组 4 0c的惰轮 43c， 以使惰轮 43c可以更平稳的转动。 支撑架 60c可以使用多块板体制 作， 以降低加工制作难度， 降低成本。 在其它实施例中， 支撑架 60c也可以整体 铸造加工， 以方便组装。
[0095] 进一步地， 该定向链轮装置 10c还包括保护罩 70c， 使用保护罩 70c罩于主传动 轮 12c与从传动轮 11c上， 可以起到保护主传动轮 12c与从传动轮 11c的作用。 另外 ， 在转动传动轴 15c吋， 通过保护罩 70c罩住主传动轮 12c与从传动轮 l lc， 还可以 防止主传动轮 12c与从传动轮 11c刮伤使用者的作用， 起到安全防护作用。 进一步 地， 还可以通过保护罩 70c来支撑传动轴 15c， 使传动轴 15c更平稳的转动。 更进 一步地， 保护罩 70c与传动轴 15c连接处还可以安装轴承， 以使保护罩 70c经轴承 来支撑传动轴 15c。 进一步地， 可以将保护罩 70c与支撑架 60c固定相连。
[0096] 本实施例的定向链轮装置 10c的其它结构与实施例二的定向链轮装置的其它结 构相同， 在此不再累赘。
[0097] 请参阅图 18， 本实用新型实施例还公幵一种脚踏设备 100， 包括支架 91、 固定 于支架 91上的如上所述的定向链轮装置 10c和分别安装于定向链轮装置 10c的传动 轴 15c两端的脚踏板 92， 传动轴 15c安装在支架 91上。 该脚踏设备 100使用了上述 定向链轮装置 10c， 则在正向踏脚踏板 92吋， 可以驱动该脚踏设备 100前行； 同吋 ， 在反向踏脚踏板 92吋， 也可以驱动该脚踏设备 100前行； 同吋由于实现了传动 轴 15c正、 反转都能驱动输出轴 22c正转， 因而提高了驱动效率， 也带来了不同的 骑行乐趣。 进一步地， 传动轴 15c可以通过轴承安装在支架 91， 以便传动轴 15c能 灵活的在支架 91上转动。 在其它一些实施例中， 传动轴 15c也可以使用轴瓦安装 在支架上。
[0098] 请一并参阅图 13， 本实施例中， 脚踏设备 100为自行车， 传动轴 15c经自行车中 轴轴承安装在自行车中轴孔中， 定向链轮装置 10c的支撑架 60c固定在支架 91上， 以更为稳定支撑和固定定向链轮装置 10c。
[0099] 其它实施例中， 脚踏设备 100也可以是脚踏船、 脚踏发电机等可以双向转动驱 动而输出单向转动运行的设备。 以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡在本发明的 精神和原则之内所作的任何修改、 等同替换和改进等， 均应包含在本发明的保 护范围之内。

Claims

权利要求书
[权利要求 1] 一种定向传动机构， 其特征在于， 包括主动轴、 输出轴、 驱动所述输 出轴与所述主动轴同向转动的同向轮组、 驱动所述输出轴与所述主动 轴反向转动的反向轮组和用于切换所述主动轴带动所述同向轮组或所 述反向轮组转动以使所述输出轴定向转动的切换机构； 所述同向轮组 连接所述主动轴与所述输出轴， 所述反向轮组连接所述主动轴与所述 输出轴。
[权利要求 2] 如权利要求 1所述的定向传动机构， 其特征在于， 所述切换机构包括 用于带动所述反向轮组转动的第一啮合齿、 用于带动所述同向轮组转 动的第二啮合齿、 以及用于配合连接所述第一啮合齿或所述第二啮合 齿的滑动件； 所述滑动件滑动安装于所述主动轴上， 所述滑动件的一 端呈与所述第一啮合齿啮合的齿状， 所述滑动件的另一端呈与所述第 二啮合齿啮合的齿状， 所述主动轴上幵设有引导所述滑动件往返于所 述第一啮合齿与所述第二啮合齿之间滑动的滑槽。
[权利要求 3] 如权利要求 2所述的定向传动机构， 其特征在于， 所述滑动件为滑动 安装于所述滑槽中的滑块， 所述滑槽沿所述主动轴的轴向设置， 所述 第一啮合齿和所述第二啮合齿均为棘齿， 且所述第一啮合齿的棘齿朝 向与所述第二啮合齿的棘齿朝向相反。
[权利要求 4] 如权利要求 3所述的定向传动机构， 其特征在于， 还包括用于将所述 滑块定位于所述主动轴上的连接套， 所述连接套的两端对应于所述凹 槽的位置分别幵设有幵孔， 各所述幵孔中安装有用于定位相应的所述 滑块的弹性定位组件， 所述滑块的两端部幵设有与所述弹性定位组件 配合的定位槽。
[权利要求 5] 如权利要求 4所述的定向传动机构， 其特征在于， 所述弹性定位组件 包括安装于所述幵孔中的弹珠、 朝向所述滑块方向抵顶所述弹珠的弹 簧和将所述弹簧固定于所述幵孔中的锁定块， 所述弹珠和所述锁定块 分别位于所述弹簧的两端。
[权利要求 6] 如权利要求 2所述的定向传动机构， 其特征在于， 所述滑槽呈螺旋状 ， 所述滑动件为套于所述主动轴上的滑套， 所述滑套的两端呈齿状， 所述滑套中设有与所述滑槽配合的螺旋内齿。
[权利要求 7] 如权利要求 2-6任一项所述的定向传动机构， 其特征在于， 所述反向 轮组包括套装于所述主动轴上的第一主动齿轮和与所述第一主动齿轮 啮合的第一从动齿轮， 所述第一从动齿轮与所述输出轴相连， 所述第 一啮合齿设于所述第一主动齿轮上。
[权利要求 8] 如权利要求 7所述的定向传动机构， 其特征在于， 所述第一主动齿轮 上靠近所述滑动件的一侧设有第一凸轮， 所述第一啮合齿设于所述第 一凸轮远离所述第一啮合齿的一侧上。
[权利要求 9] 如权利要求 2-6任一项所述的定向传动机构， 其特征在于， 所述同向 轮组包括套装于所述主动轴上的第二主动齿轮、 与所述输出轴相连的 第二从动齿轮和配合啮合所述第二主动齿轮与所述第二从动齿轮的惰 轮， 所述第二从动齿轮与所述第二主动齿轮间隔设置， 所述第二啮合 齿设于所述第二主动齿轮上。
[权利要求 10] 如权利要求 9所述的定向传动机构， 其特征在于， 所述第二主动齿轮 上靠近所述滑动件的一侧设有第二凸轮， 所述第二啮合齿设于所述第 二凸轮远离所述第二啮合齿的一侧上。
[权利要求 11] 如权利要求 1-6任一项所述的定向传动机构， 其特征在于， 还包括用 于支撑所述主动轴、 所述同向轮组、 所述反向轮组以及所述输出轴的 支撑架。
[权利要求 12] —种定向链轮装置， 其特征在于， 包括如权利要求 1-11任一项所述的 定向传动机构、 带动所述定向传动机构的主动轴转动的从传动轮、 驱 动所述从传动轮转动的主传动轮、 支撑所述主传动轮的传动轴和与所 述输出轴相连的输出轮。
[权利要求 13] 如权利要求 12所述的定向链轮装置， 其特征在于， 所述输出轮为飞轮 ， 所述从传动轮和所述主传动轮均为链轮， 该定向链轮装置还包括配 合连接所述主传动轮与所述从传动轮的传动链条。
[权利要求 14] 如权利要求 12所述的定向链轮装置， 其特征在于， 所述输出轮为齿轮 ， 所述从传动轮和所述主传动轮均为链轮， 该定向链轮装置还包括配 合连接所述主传动轮与所述从传动轮的传动链条、 套于所述传动轴上 的变速轮组和带动所述变速轮组转动的驱动齿轮， 所述驱动齿轮与所 述输出轮啮合， 所述驱动齿轮与所述变速轮组相连。
[权利要求 15] 如权利要求 12所述的定向链轮装置， 其特征在于， 所述输出轮为链轮 ， 所述从传动轮与所述主传动轮为相互啮合的齿轮， 该定向链轮装置 还包括套于所述传动轴上的变速轮组、 带动所述变速轮组转动的驱动 链轮、 配合连接所述输出轮与所述驱动链轮的驱动链条。
[权利要求 16] —种脚踏设备， 其特征在于， 包括车架、 如权利要求 12-15任一项所 述的定向链轮装置和用于带动所述定向链轮装置的传动轴转动的脚踏 板， 所述传动轴安装于所述车架上。
PCT/CN2016/076416 2015-07-17 2016-03-15 定向传动机构、定向链轮装置及脚踏设备 WO2017012358A1 (zh)

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US20190337589A1 (en) 2019-11-07

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