WO2016024557A1 - 動力伝達装置 - Google Patents
動力伝達装置 Download PDFInfo
- Publication number
- WO2016024557A1 WO2016024557A1 PCT/JP2015/072581 JP2015072581W WO2016024557A1 WO 2016024557 A1 WO2016024557 A1 WO 2016024557A1 JP 2015072581 W JP2015072581 W JP 2015072581W WO 2016024557 A1 WO2016024557 A1 WO 2016024557A1
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- WO
- WIPO (PCT)
- Prior art keywords
- cam surface
- cam
- pressure
- clutch
- power transmission
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 56
- 238000003825 pressing Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D13/00—Friction clutches
- F16D13/22—Friction clutches with axially-movable clutching members
- F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
- F16D13/52—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member
- F16D13/54—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member
- F16D13/56—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member in which the clutching pressure is produced by springs only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
-
- 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
- F16D13/00—Friction clutches
- F16D13/02—Friction clutches disengaged by the contact of a part mounted on the clutch with a stationarily-mounted member
-
- 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
- F16D13/00—Friction clutches
- F16D13/22—Friction clutches with axially-movable clutching members
- F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
- F16D13/52—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member
-
- 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
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
- F16D43/21—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
- F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
- F16D7/024—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces
- F16D7/025—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces with flat clutching surfaces, e.g. discs
- F16D7/027—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces with flat clutching surfaces, e.g. discs with multiple lamellae
-
- 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
- F16D13/00—Friction clutches
- F16D13/22—Friction clutches with axially-movable clutching members
- F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
- F16D13/52—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member
- F16D13/54—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member
- F16D13/56—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member in which the clutching pressure is produced by springs only
- F16D2013/565—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member in which the clutching pressure is produced by springs only with means for releasing the clutch pressure in case of back torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
- F16D2023/123—Clutch actuation by cams, ramps or ball-screw mechanisms
Definitions
- the present invention relates to a power transmission device that can arbitrarily transmit or block the rotational force of an input member to an output member.
- a power transmission device included in a motorcycle is used to arbitrarily transmit or cut off the driving force of an engine to and from a driving wheel.
- An input member connected to the engine side, and the transmission and driving wheel side
- An output member coupled to the output member, and a clutch member coupled to the output member.
- the drive side clutch plate and the driven side clutch plate, which are formed, are pressed against each other to transmit power, and the pressure contact is achieved.
- the transmission of the power is cut off by releasing the force.
- a conventional power transmission device rotates with the rotation of an input member to form a plurality of drive-side clutch plates and a clutch housing.
- a plurality of driven-side clutch plates formed alternately with the drive-side clutch plates, a clutch member connected to the output member, and attached to the clutch member while being movable in the axial direction of the clutch member.
- a pressure member capable of pressing the driving side clutch plate and the driven side clutch plate or releasing the pressing force with the movement in the axial direction, and the pressure contact or pressing force of the driving side clutch plate and the driven side clutch plate.
- the conventional power transmission device moves the pressure member and the clutch member.
- a pressure-contact assisting cam that can increase the pressure-contact force between the driving-side clutch plate and the driven-side clutch plate, and the pressure member and the clutch member are relative to each other when the rotation of the output member exceeds the rotation speed of the input member.
- a back torque limiter cam for releasing the pressure contact force between the drive side clutch plate and the driven side clutch plate by separating the pressure member and the clutch member.
- the back torque limiter cam acts. It should be noted that the torque when the back torque limiter cam acts and the torque when the pressure contact assist cam acts are preferably set in various ways according to demands such as the form of the vehicle and the preference of the driver.
- the conventional power transmission device has the following problems.
- the torque when the back torque limiter cam is applied is set to be smaller, it is necessary to form the cam surfaces of the back torque limiter cam and the cam surface of the pressure assist cam different from each other.
- the pair of cam surfaces constituting the back torque limiter cam are separated from each other.
- the size must be set to be relatively large, and the gap is caused by the separation size, causing abnormal noise and vibration.
- the gradient angle of the pressure-contact assist cam and the back torque limiter cam is set within a certain range.
- the present invention has been made in view of such circumstances, and the torque when the back torque limiter cam acts and the torque when the pressure contact assist cam acts can be made different according to requirements,
- the present invention also provides a power transmission device capable of suppressing looseness by satisfactorily assembling the clutch member and the pressure member while facing the cam surface of the pressure-assist assist cam and the cam surface of the back torque limiter cam. is there.
- a clutch housing that rotates with the rotation of the input member and is attached with a plurality of drive side clutch plates, and a plurality of driven side clutch plates that are alternately formed with the drive side clutch plates of the clutch housing are attached.
- a clutch member connected to the output member, and attached to the clutch member to cause the driving side clutch plate and the driven side clutch plate to be brought into pressure contact with each other or to release the pressure contact force as the clutch member moves in the axial direction.
- a pressure member to be obtained a biasing means for biasing the pressure member in a direction in which the driving clutch plate and the driven clutch plate are pressed against each other, and a state in which the rotational force input to the input member can be transmitted to the output member
- the drive side clutch plate and the cover A pressure assisting cam capable of increasing the pressure contact force with the side clutch plate, and the drive side clutch when the pressure member and the clutch member rotate relatively when the rotation of the output member exceeds the rotational speed of the input member
- a back torque limiter cam that releases the pressure contact force between the plate and the driven clutch plate, and is input to the input member by the pressure contact between the drive side clutch plate and the driven clutch plate or the release of the pressure contact force.
- the receiving portion of the urging means on the pressure member side is composed of a receiving member separate from the pressure member, and the receiving member and the clutch When a first cam surface and a second cam surface constituting one of the pressure-contact assist cam or the back torque limiter cam are formed on the member, respectively.
- the pressure member and the third cam surface and a fourth cam surface constituting the other of the pressure-contact assisting cams or the back torque cam limiter to said clutch member is formed respectively.
- the first cam surface and the second cam surface constitute the back torque limiter cam, and the third cam surface and the fourth cam.
- the surface constitutes the pressure-contact assisting cam.
- the receiving member has a fifth cam surface formed on the opposite side of the first cam surface, and faces the fifth cam surface.
- a sixth cam surface is formed on the pressure member, and the back torque limiter cam is constituted by the first cam surface, the second cam surface, the fifth cam surface, and the sixth cam surface.
- the first cam surface and the second cam surface that constitute the back torque limiter cam, and the third cam that constitutes the pressure-contact assist cam are substantially the same.
- gradient angles of the first cam surface and the second cam surface and the fifth cam surface and the sixth cam surface are substantially the same. It is characterized by that.
- the receiving member is formed with a concave portion that accommodates the biasing means and the concave portion. It has a receiving part that abuts on one end of the urging means and receives an urging force, and a transmission part that abuts on the pressure member and can transmit the urging force of the urging means to the pressure member.
- the invention according to claim 7 is the power transmission device according to any one of claims 1 to 6, wherein at least a cam surface formed on the receiving member and a cam surface facing the cam surface are flat. It consists of a surface.
- the invention according to claim 8 is the power transmission device according to any one of claims 1 to 7, wherein a plurality of the receiving members are concentrically attached to the pressure member.
- the invention according to claim 9 is the power transmission device according to any one of claims 1 to 8, wherein a plurality of the receiving members are integrated.
- the receiving portion of the urging means on the pressure member side is composed of a receiving member separate from the pressure member, and the receiving member and the clutch member are cams for pressure contact assist or cam for back torque limiter.
- the first cam surface and the second cam surface constituting one of the first cam surface and the third cam surface and the fourth cam constituting the other of the pressure assisting cam and the back torque limiter cam on the pressure member and the clutch member, respectively. Since the respective surfaces are formed, the torque when the back torque limiter cam acts and the torque when the pressure assist cam acts can be made different as required, and the cam of the pressure assist cam
- the first cam surface and the second cam surface constitute a back torque limiter cam
- the third cam surface and the fourth cam surface constitute a pressure contact assist cam.
- the fifth cam surface is formed on the side opposite to the first cam surface, and the sixth cam surface facing the fifth cam surface is formed on the pressure member. Since the first cam surface, the second cam surface, the fifth cam surface, and the sixth cam surface constitute the back torque limiter cam, the torque when the back torque limiter cam acts can be easily set large.
- the gradient angle between the first cam surface and the second cam surface constituting the back torque limiter cam and the third cam surface and the fourth cam surface constituting the pressure contact assist cam is substantially equal. Because the torque is the same, the torque when the back torque limiter cam is applied is set to be larger than the torque when the pressure assist cam is applied by the cam action of the fifth cam surface and the sixth cam surface. be able to.
- the receiving member can be operated smoothly.
- the receiving member includes a concave portion that accommodates the biasing means, a receiving portion that is formed in the concave portion and abuts against one end portion of the biasing means and receives the biasing force, and the pressure member. And a transmission portion that can transmit the urging force of the urging means to the pressure member, so that when the back torque limiter cam operates, the drive-side clutch plate and the driven-side clutch plate are more reliably and smoothly connected. The pressure contact force can be released.
- At least the cam surface formed on the receiving member and the cam surface facing the cam surface are flat surfaces, respectively, so that the size of the power transmission device (the clutch member and the pressure member)
- the receiving member can be made independent of (diameter), and the versatility of the receiving member can be improved and the manufacturing cost can be reduced.
- the eighth aspect of the present invention since a plurality of the receiving members are concentrically attached to the pressure member, the function as a pressing assist cam or a back torque limiter cam when the receiving member is operated smoothly and smoothly. It can be done reliably.
- the plurality of receiving members since the plurality of receiving members are integrated, the plurality of receiving members can be assembled to the pressure member at a time, and the assembling property of the receiving member can be improved. .
- FIG. 1 is an overall longitudinal sectional view showing a power transmission device according to an embodiment of the present invention.
- the third cam surface and the fourth cam surface constituting the pressure-contact assist cam in the power transmission device, the first cam surface and the second cam surface constituting the back torque limiter cam, and the fifth cam surface and the sixth cam.
- Expanded sectional view showing the surface
- the expanded sectional view which shows the process in which the clutch member and pressure member in the same power transmission device are assembled.
- the expanded sectional view which shows the process in which the clutch member and pressure member in the power transmission device which concern on other embodiment of this invention are assembled
- the perspective view which shows the receiving member in the power transmission device which concerns on other embodiment of this invention.
- the power transmission device is disposed in a vehicle such as a two-wheeled vehicle and arbitrarily transmits or shuts off the driving force of the engine to the mission or driving wheel side.
- a clutch housing 2 in which a gear 1 as a member is formed, a clutch member 4 connected to a shaft 3 as an output member, a pressure member 5 formed on the right end side of the clutch member 4 in the figure, and the clutch housing 2 side
- a drive side clutch plate 6 connected to the clutch member 4, a driven side clutch plate 7 connected to the clutch member 4 side, a fixing member 8, a push rod 9, a clutch spring 10 as an urging means, and a receiving member 11.
- symbol S indicates a damper
- symbol D indicates a ball bearing.
- the gear 1 is rotatable about the shaft 3 when a driving force (rotational force) transmitted from the engine is input, and is connected to the clutch housing 2 by a rivet or the like.
- the clutch housing 2 is formed of a cylindrical case member having an opening on the right end side of the figure, and a plurality of drive side clutch plates 6 are attached to the inner peripheral wall thereof.
- Each of the drive side clutch plates 6 is made of a plate material formed in a substantially annular shape, and is fitted with a spline formed on the inner peripheral surface of the clutch housing 2, thereby rotating with the rotation of the clutch housing 2, And it is comprised so that it can slide to an axial direction (left-right direction in FIG. 1).
- the clutch member 4 is composed of a member disposed in the clutch housing 2, and as shown in FIGS. 2 to 4, a central hole 4a through which the shaft 3 can pass, an outer peripheral wall 4b formed with splines, It has a bolt hole 4c through which the bolt B can be inserted. Splines are formed on the inner peripheral surface of the central hole 4a and the outer peripheral surface of the shaft 3, respectively.
- the shaft 3 is spline-fitted and connected to the central hole 4a, the shaft 3 is rotated when the clutch member 4 rotates. Is also configured to rotate.
- a driven clutch plate 7 is fitted and attached to the spline formed on the outer peripheral wall 4b.
- the spline formed on the outer peripheral wall 4b of the clutch member 4 is formed in a concavo-convex shape integrally formed over substantially the entire periphery of the outer peripheral wall 4b, and constitutes the spline.
- the driven clutch plates 7 are alternately laminated with the drive clutch plates 6 so that the adjacent drive clutch plates 6 and the driven clutch plates 7 are released from pressure contact or pressure contact force. . That is, the drive side clutch plate 6 and the driven side clutch plate 7 are allowed to slide in the axial direction of the clutch member 4, and are pressed against each other when the pressure member 5 is pressed leftward in FIG.
- the rotational force of the housing 2 is transmitted to the shaft 3 via the clutch member 4.
- the pressure contact force is released and the clutch member 4 does not follow the rotation of the clutch housing 2. It stops and the transmission of the rotational force to the shaft 3 is not made.
- a fixing member 8 is fixed by a bolt B inserted through the bolt hole 4c, and a clutch spring 10 as an urging means is attached to the fixing member 8.
- the clutch spring 10 is composed of a coil spring having one end abutting against the receiving member 11 and the other end abutting against the fixing member 8 and is assembled in a direction in which the driving clutch plate 6 and the driven clutch plate 7 are in pressure contact ( That is, the pressure member 5 can be always urged in the direction in which the pressure member 5 is brought close to the clutch member 4.
- the pressure member 5 is attached to a position on the right end side in FIG. 1 of the clutch member 4 while being movable in the axial direction (left and right direction in FIG. 1) of the clutch member 4, and moves in the axial direction with respect to the clutch member 4. Accordingly, the driving side clutch plate 6 and the driven side clutch plate 7 can be brought into pressure contact or the pressure contact force can be released. More specifically, as shown in FIGS. 5 to 7, the pressure member 5 includes a flange portion 5 a that can press-contact the driving side clutch plate 6 and the driven side clutch plate 7, and a mounting hole 5 b for mounting the receiving member 11. And a through hole 5c and a central hole 5d.
- a pressed member E is attached to the central hole 5d of the pressure member 5 via a ball bearing D as shown in FIG.
- the pressed member E is attached to the protruding end side of the shaft 3 and can move following the push rod 9. Therefore, when the driver operates the operation means such as a clutch lever (not shown) to cause the push rod 9 to protrude in the right direction in the figure, the pressed member E moves in the same direction.
- the spring 10 can be moved rightward (in a direction away from the clutch member 4) against the urging force of the spring 10.
- the pressure member 5 moves to the right, the pressure contact force between the drive side clutch plate 6 and the driven side clutch plate 7 is released, and the rotational force input to the gear 1 and the clutch housing 2 becomes the clutch member 4 and the shaft. 3 is cut off without being transmitted. That is, the pressure member 5 is configured to be able to press the driving side clutch plate 6 and the driven side clutch plate 7 or release the pressing force with the movement of the clutch member 4 in the axial direction.
- the mounting holes 5b are concentrically formed in the pressure member 5 at a plurality (three) at equal intervals, and the receiving member 11 is attached to each of the mounting holes 5b.
- the receiving member 11 attached to the attachment hole 5b of the pressure member 5 is in contact with one end of the clutch spring 10 and can receive the urging force, and is separated from the pressure member 5.
- the receiving member 11 according to this embodiment includes a recess 11 a that houses the clutch spring 10, and one end of the clutch spring 10 that is formed in the recess 11 a. It consists of a cup-shaped member having a receiving portion 11b that contacts and receives a biasing force and a transmission portion 11c that contacts the pressure member 5 and can transmit the biasing force of the clutch spring 10 to the pressure member 5.
- the transmission part 11c consists of the flange part formed in the opening side of the receiving member 11, and when the receiving member 11 is attached to the attachment hole 5b, it will contact
- the clutch spring 10 is housed in the recess 11a and is assembled in a state in which one end thereof is in contact with the receiving portion 11b. Is transmitted to the pressure member 5 side through the transmission portion 11c of the receiving member 11, and the driving side clutch plate 6 and the driven side clutch plate 7 can be brought into pressure contact with each other by the transmitted urging force.
- the pressure member 5 and the clutch member 4 are The rotation of the shaft 3 as the output member and the rotation speed of the gear 1 as the input member exceeds the rotation speed of the pressure assisting cam that can increase the pressure contact force between the driving side clutch plate 6 and the driven side clutch plate 7 when relatively rotated.
- a back torque limiter cam for releasing the pressure contact force between the driving side clutch plate 6 and the driven side clutch plate 7 is provided.
- the cam surfaces (the first cam surface C1 to the sixth cam surface C6) that constitute the pressure-contact assist cam and the back torque limiter cam are shown by being shaded (cross-hatched).
- the press-contact assist cam according to the present embodiment is configured by confronting the third cam surface C3 and the fourth cam surface C4 formed on the pressure member 5 and the clutch member 4, respectively. That is, when the clutch member 4 and the pressure member 5 are assembled, the third cam surface C3 (see FIG. 5) formed on the pressure member 5 and the fourth cam surface formed on the clutch member 4 as shown in FIG. The pressure member 5 and the clutch member 4 rotate relative to each other when the rotational force input to the gear 1 can be transmitted to the shaft 3 by facing the C4 (see FIG. 3).
- the drive member clutch plate 6 and the driven clutch plate 7 are moved by moving the pressure member 5 in the ⁇ direction in the figure by the cam action of the third cam surface C3 and the fourth cam surface C4 and bringing them close to the clutch member 4.
- the pressure contact force increases.
- the back torque limiter cam according to the present embodiment is configured by opposing the first cam surface C1 and the second cam surface C2 formed on the receiving member 11 and the clutch member 4, respectively. That is, when the clutch member 4, the pressure member 5 and the receiving member 11 are assembled, as shown in FIG. 10, the first cam surface C1 (see FIGS. 8 and 9) formed on the bottom side surface of the receiving member 11, and the clutch member 4 is opposed to the second cam surface C2 (see FIG.
- the receiving member 11 has a fifth cam surface C5 formed on the side opposite to the first cam surface C1, and faces the fifth cam surface C5.
- a sixth cam surface C6 (see FIG. 5) is formed on the pressure member 5. That is, the first cam surface C1 and the fifth cam surface C5 are respectively formed on both side surfaces of the bottom portion of the receiving member 11, and the first cam surface C1, the second cam surface C2, the fifth cam surface C5, and the A back torque limiter cam is constituted by the six cam surfaces C6.
- the receiving member 11 has both the cam action by the first cam face C1 and the second cam face C2 and the cam action by the fifth cam face C5 and the sixth cam face C6. Will receive.
- the angles (gradient angles with respect to the axis) are substantially the same, and the gradient angles of the first cam surface C1 and the second cam surface C2, and the fifth cam surface C5 and the sixth cam surface C6 are substantially the same. Yes.
- At least the cam surface formed on the receiving member 11 and the cam surface facing the cam surface are each formed of a flat surface. That is, the cam surface can be formed in a helical surface in accordance with the size of the power transmission device.
- the receiving member 11 is the size of the power transmission device (the diameters of the clutch member 4 and the pressure member 5).
- the receiving member 11 can be attached to a power transmission device of various sizes.
- the other cam surface may be a helical surface or a flat surface.
- the clutch member 4 and the pressure member 5 are made to face each other (see FIG. 11A), and the third member is brought close to each other.
- the cam for pressure contact assisting is configured with the cam surface C3 and the fourth cam surface C4 facing each other (see FIG. 5B).
- the back cam torque is caused by confronting the fifth cam surface C5 and the sixth cam surface C6 while confronting the first cam surface C1 and the second cam surface C2.
- a limiter cam is constructed (see FIG. 5C).
- the back torque limiter cam is reduced while reducing the clearance between the pair of cam surfaces (the third cam surface C3 and the fourth cam surface C4) constituting the pressure-contact assist cam.
- the clearance of the paired cam surfaces (the first cam surface C1 and the second cam surface C2, the fifth cam surface C5 and the sixth cam surface C6) can be reduced, and play can be suppressed.
- the receiving portion of the clutch spring 10 (biasing means) on the pressure member 5 side includes the receiving member 11 that is separate from the pressure member 5, and the back torque is applied to the receiving member 11 and the clutch member 4.
- a first cam surface C1 and a second cam surface C2 that constitute a limiter cam are formed, respectively, and a third cam surface C3 and a fourth cam surface C4 that constitute a pressure contact assist cam on the pressure member 5 and the clutch member 4 respectively.
- the torque when the back torque limiter cam acts and the torque when the pressure assist cam acts can be made different according to demand, and the cam surface of the pressure assist cam (The third cam surface C3 and the fourth cam surface C4) and the cam surface of the back torque limiter cam (the first cam surface C1 and the second cam surface C2) It is possible to suppress the backlash of the clutch member 4 and the pressure member 5 while facing to reduce the clearance each well assembled.
- the receiving member 11 on which the first cam surface C1 is formed is configured separately from the pressure member 5, so that when the driver operates the clutch lever, It is possible to suppress the vibration generated due to the clearance with the second cam surface C2 from being transmitted from the pressure member 5 to the clutch lever via the ball bearing D or the like, thereby improving operability. Can do.
- the first cam surface C1 and the second cam surface C2 according to the present embodiment constitute a back torque limiter cam
- the third cam surface C3 and the fourth cam surface C4 constitute a pressure-contact assist cam. Therefore, by determining the gradient angle of the first cam surface C1 formed on the receiving member 11, the torque when the back torque limiter cam acts can be arbitrarily set.
- the fifth cam surface C5 is formed on the side opposite to the first cam surface C1
- the sixth cam surface C6 facing the fifth cam surface C5 is the pressure member 5.
- the back torque limiter cam is formed by the first cam surface C1, the second cam surface C2, the fifth cam surface C5, and the sixth cam surface C6. The torque can be changed easily.
- the gradient angles of the first cam surface C1 and the second cam surface C2 and the fifth cam surface C5 and the sixth cam surface C6 are substantially the same, so that the back torque limiter cam is When acting, the receiving member 11 can be operated smoothly.
- the receiving member 11 has a first cam surface C1 and a fifth cam surface C5.
- a first cam surface C1 for example, as shown in FIG. It is good also as what formed the cam surface C1 (it does not have the 5th cam surface C5 on the opposite side).
- the torque when the back torque limiter cam acts can be arbitrarily set.
- the clutch member 4 and the pressure member 5 are opposed to each other (see FIG. 12A), and are close to each other.
- the pressure-assist assist cam is configured with the third cam surface C3 and the fourth cam surface C4 facing each other (see FIG. 4B). Then, by attaching the receiving member 11 to the mounting hole 5b of the pressure member 5, the first cam surface C1 and the second cam surface C2 are opposed to each other to form a back torque limiter cam (see FIG. 4C).
- the back torque limiter cam is reduced while reducing the clearance between the pair of cam surfaces (the third cam surface C3 and the fourth cam surface C4) constituting the pressure-contact assist cam.
- the clearance of the cam surface (1st cam surface C1 and 2nd cam surface C2) to comprise can be made small, and play can be suppressed.
- the receiving member 11 includes a recess 11a that houses the clutch spring 10 (biasing means), and a receiver that is formed in the recess 11a and abuts against one end of the clutch spring 10 to receive the biasing force.
- the clutch spring 10 is brought into contact with the portion 11b and the pressure member 5 (specifically, locked only in the direction in which the pressure member 5 is moved so that the driving side clutch plate 6 and the driven side clutch plate 7 are in pressure contact).
- a transmission portion 11c that can transmit the urging force to the pressure member 5.
- each of the second cam surface C2 and the sixth cam surface C6) is made of a flat surface, so that the receiving member 11 does not depend on the size of the power transmission device (the diameter of the clutch member 4 and the pressure member 5).
- the versatility of the receiving member 11 can be improved and the manufacturing cost can be reduced.
- a plurality of the receiving members 11 are concentrically attached to the pressure member 5, the function as a back torque limiter cam when the receiving member 11 operates can be smoothly and reliably performed.
- the present invention is not limited to these embodiments.
- the first cam surface C1 and the second cam surface C2 that constitute the pressure-contact assist cam on the receiving member 11 and the clutch member 4 are provided.
- the pressure member 5 and the clutch member 4 are respectively formed with the third cam surface C3 and the fourth cam surface C4 constituting the back torque limiter cam (ie, the pressure contact assist cam and the back torque limiter).
- the cam for the operation may be the opposite of the above embodiment). That is, the first cam surface C1 and the second cam surface C2 constituting one of the pressure contact assist cam or the back torque limiter cam are formed on the receiving member 11 and the clutch member 4, respectively, and the pressure member 5 and the clutch member 4 are formed. Further, the third cam surface C3 and the fourth cam surface C4 constituting the other of the pressure-assist assist cam or the back torque limiter cam can be formed respectively.
- a plurality of receiving members are formed independently.
- a plurality (three in the present embodiment) of receiving members 11 ′ are integrated. It may consist of.
- the two annular portions M1 and M2 are concentrically formed, and one end of the receiving member 11 ′ is integrated with the annular portion M1, while the other end is integrated with the annular member M2.
- This is an integrated part.
- the plurality of receiving members 11 ′ can be assembled to the pressure member 5 at once, and the assembling property of the receiving member 11 ′ is improved. be able to.
- the power transmission device of the present invention can be applied to various multi-plate clutch type power transmission devices such as automobiles, three-wheel or four-wheel buggies, and general-purpose machines in addition to motorcycles.
- a receiving portion of the urging means on the pressure member side is formed of a receiving member separate from the pressure member, and a first cam surface that constitutes either the pressure assist cam or the back torque limiter cam on the receiving member and the clutch member. And the second cam surface are formed, and the pressure member and the clutch member are respectively formed with the third cam surface and the fourth cam surface that constitute the other of the pressure assisting cam or the back torque limiter cam. If so, the present invention can also be applied to ones having different external shapes or to which other functions are added.
Abstract
Description
例えばバックトルクリミッタ用カムが作用する際のトルクをより小さく設定する場合、バックトルクリミッタ用カムのカム面と圧接アシスト用カムのカム面の勾配角度とを互いに異ならせて形成する必要がある。その場合、圧接アシスト用カムのカム面とバックトルクリミッタ用カムのカム面とをそれぞれ対峙させつつクラッチ部材とプレッシャ部材とを組み付けるには、バックトルクリミッタ用カムを構成する一対のカム面の離間寸法を比較的大きく設定せざるを得ず、その離間寸法によってガタが生じて異音や振動の原因となってしまうという不具合がある。そのことから、圧接アシスト用カムとバックトルクリミッタ用カムの勾配角度は一定の範囲内に設定されるのが好ましい。
本実施形態に係る動力伝達装置は、二輪車等の車両に配設されて任意にエンジンの駆動力をミッションや駆動輪側へ伝達し又は遮断するためのもので、図1に示すように、入力部材としてのギア1が形成されたクラッチハウジング2と、出力部材としてのシャフト3と連結されたクラッチ部材4と、クラッチ部材4の図中右端側に形成されたプレッシャ部材5と、クラッチハウジング2側に連結された駆動側クラッチ板6及びクラッチ部材4側に連結された被動側クラッチ板7と、固定部材8と、プッシュロッド9と、付勢手段としてのクラッチスプリング10と、受け部材11とから主に構成されている。尚、図中符号Sはダンパを示しているとともに、符号Dはボールベアリングを示している。
2 クラッチハウジング(入力部材)
3 シャフト(出力部材)
4 クラッチ部材
5 プレッシャ部材
6 駆動側クラッチ板
7 被動側クラッチ板
8 固定部材
9 プッシュロッド
10 クラッチスプリング(付勢手段)
11 受け部材
C1 第1カム面
C2 第2カム面
C3 第3カム面
C4 第4カム面
C5 第5カム面
C6 第6カム面
Claims (9)
- 入力部材の回転と共に回転し複数の駆動側クラッチ板が取り付けられるクラッチハウジングと、
前記クラッチハウジングの駆動側クラッチ板と交互に形成された複数の被動側クラッチ板が取り付けられるとともに、出力部材と連結されたクラッチ部材と、
前記クラッチ部材に取り付けられ、クラッチ部材に対する軸方向への移動に伴い前記駆動側クラッチ板と被動側クラッチ板とを圧接させ又は圧接力を解放させ得るプレッシャ部材と、
前記駆動側クラッチ板と被動側クラッチ板とが圧接する方向に前記プレッシャ部材を付勢する付勢手段と、
前記入力部材に入力された回転力が出力部材に伝達され得る状態となったときに前記プレッシャ部材及び前記クラッチ部材が相対的に回転すると前記駆動側クラッチ板と被動側クラッチ板との圧接力を増加させ得る圧接アシスト用カムと、
前記出力部材の回転が入力部材の回転数を上回ったときに前記プレッシャ部材及び前記クラッチ部材が相対的に回転すると前記駆動側クラッチ板と被動側クラッチ板との圧接力の解放を行わせるバックトルクリミッタ用カムと、
を有し、前記駆動側クラッチ板と被動側クラッチ板との圧接又は圧接力の解放により、入力部材に入力された回転力を出力部材に伝達し又は遮断し得る動力伝達装置において、
前記プレッシャ部材側における前記付勢手段の受け部が当該プレッシャ部材とは別体の受け部材から成り、当該受け部材及び前記クラッチ部材に前記圧接アシスト用カム又はバックトルクリミッタ用カムの一方を構成する第1カム面及び第2カム面がそれぞれ形成されるとともに、前記プレッシャ部材及び前記クラッチ部材に前記圧接アシスト用カム又はバックトルクリミッタ用カムの他方を構成する第3カム面及び第4カム面がそれぞれ形成されたことを特徴とする動力伝達装置。 - 前記第1カム面及び第2カム面は、前記バックトルクリミッタ用カムを構成するとともに、前記第3カム面及び第4カム面は、前記圧接アシスト用カムを構成することを特徴とする請求項1記載の動力伝達装置。
- 前記受け部材は、前記第1カム面と反対側に第5カム面が形成されるとともに、当該第5カム面と対峙する第6カム面が前記プレッシャ部材に形成され、前記第1カム面及び第2カム面と第5カム面及び第6カム面とによって前記バックトルクリミッタ用カムが構成されることを特徴とする請求項2記載の動力伝達装置。
- 前記バックトルクリミッタ用カムを構成する前記第1カム面及び第2カム面と、前記圧接アシスト用カムを構成する前記第3カム面及び第4カム面との勾配角度が略同一とされたことを特徴とする請求項3記載の動力伝達装置。
- 前記第1カム面及び第2カム面と、前記第5カム面及び第6カム面との勾配角度が略同一とされたことを特徴とする請求項4記載の動力伝達装置。
- 前記受け部材は、前記付勢手段を収容する凹部と、該凹部内に形成されて前記付勢手段の一端部と当接して付勢力を受ける受け部と、前記プレッシャ部材に当接して前記付勢手段の付勢力を当該プレッシャ部材に伝達し得る伝達部とを有することを特徴とする請求項1~5の何れか1つに記載の動力伝達装置。
- 少なくとも前記受け部材に形成されたカム面及びそのカム面と対峙するカム面は、それぞれ平坦な面から成ることを特徴とする請求項1~6の何れか1つに記載の動力伝達装置。
- 前記受け部材は、前記プレッシャ部材に対して同心円状に複数取り付けられたことを特徴とする請求項1~7の何れか1つに記載の動力伝達装置。
- 複数の前記受け部材が一体化されて成ることを特徴とする請求項1~8の何れか1つに記載の動力伝達装置。
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EP3617541A1 (en) | 2020-03-04 |
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