WO2021210197A1 - 動力伝達装置 - Google Patents
動力伝達装置 Download PDFInfo
- Publication number
- WO2021210197A1 WO2021210197A1 PCT/JP2020/034742 JP2020034742W WO2021210197A1 WO 2021210197 A1 WO2021210197 A1 WO 2021210197A1 JP 2020034742 W JP2020034742 W JP 2020034742W WO 2021210197 A1 WO2021210197 A1 WO 2021210197A1
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- WIPO (PCT)
- Prior art keywords
- clutch
- clutch plate
- opening
- spherical
- weight
- Prior art date
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 47
- 238000005096 rolling process Methods 0.000 claims abstract description 34
- 230000002093 peripheral effect Effects 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 15
- 238000003825 pressing Methods 0.000 description 14
- 238000003780 insertion Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000001105 regulatory effect Effects 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
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
- F16D43/06—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating axially a movable pressure ring or the like
- F16D43/08—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating axially a movable pressure ring or the like the pressure ring actuating friction plates, cones or similar axially-movable friction surfaces
- F16D43/12—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating axially a movable pressure ring or the like the pressure ring actuating friction plates, cones or similar axially-movable friction surfaces the centrifugal masses acting on, or forming a part of, an actuating mechanism by which the pressure ring can also be actuated independently of the masses
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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
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
- F16D43/06—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating axially a movable pressure ring or the like
- F16D43/08—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating axially a movable pressure ring or the like the pressure ring actuating friction plates, cones or similar axially-movable friction surfaces
- F16D43/10—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating axially a movable pressure ring or the like the pressure ring actuating friction plates, cones or similar axially-movable friction surfaces the centrifugal masses acting directly on the pressure ring, no other actuating mechanism for the pressure ring being provided
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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
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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
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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
- F16D47/00—Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the preceding guide headings
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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
- 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
- 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
- F16D43/213—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 with axially applied torque-limiting friction surfaces
- F16D43/215—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 with axially applied torque-limiting friction surfaces with flat friction surfaces, e.g. discs
- F16D43/216—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 with axially applied torque-limiting friction surfaces with flat friction surfaces, e.g. discs with multiple lamellae
Definitions
- the present invention relates to a power transmission device capable of arbitrarily transmitting or blocking the rotational force of an input member to an output member.
- the power transmission device provided in a motorcycle is for arbitrarily transmitting or shutting off the driving force of the engine to the transmission and the driving wheels, and the input member connected to the engine side and the transmission and the driving wheels side. It has a connected output member, a clutch member connected to the output member, and a pressure member that can be brought close to or separated from the clutch member, and is driven by bringing the pressure member close to the clutch member.
- the side clutch plate and the driven side clutch plate are brought into pressure contact with each other to transmit power, and the pressure member is separated from the clutch member to release the pressure contact force between the driving side clutch plate and the driven side clutch plate. This is configured to cut off the transmission of the power.
- the drive side clutch plate and the driven side clutch plate are driven by moving from the inner diameter side position to the outer diameter side position of the groove portion by centrifugal force accompanying the rotation of the clutch housing.
- a centrifugal clutch means including a weight member capable of pressure contact with the side clutch plate has been proposed. According to such a conventional power transmission device, centrifugal force can be applied to the weight member by rotating the clutch housing as the engine is driven, and the drive side clutch plate and the driven side clutch plate are brought into pressure contact with each other. The driving force of the engine can be transmitted to the wheels.
- the weight member is made of steel balls, a relatively large moving space for the steel balls is required, and the device may become large. For this reason, the applicant has earnestly considered miniaturizing the device by using a piece-shaped weight member having front and back surfaces, but in this case, in order to smoothly move the weight member, the weight member A through hole through which a pair of spherical members (first spherical member and second spherical member) can be inserted is formed, and a part of the first spherical member is projected from one opening of the through hole and the other. We have come to study a configuration in which a part of the second spherical member protrudes from the opening.
- the weight member when a centrifugal force is generated due to the rotation of the clutch housing, the weight member can be smoothly moved from the inner diameter side position to the outer diameter side position by rolling the first spherical member and the second spherical member. can.
- a weight member when such a weight member is used, for example, it is necessary to crimp one opening edge of the insertion hole to prevent the first spherical member from coming off, and to crimp the other opening edge to prevent the second spherical member from coming off. Therefore, there is a problem that workability deteriorates and manufacturing cost increases.
- the present invention has been made in view of such circumstances, and a power transmission device capable of easily and accurately attaching the first spherical member and the second spherical member to the weight member and reducing the manufacturing cost can be provided. To provide.
- the invention according to claim 1 is formed by alternately forming a clutch housing to which a plurality of drive-side clutch plates are attached and a drive-side clutch plate of the clutch housing, which rotates together with an input member that rotates by the driving force of a vehicle engine.
- a plurality of driven side clutch plates are attached, and the clutch member connected to the output member capable of rotating the wheels of the vehicle is pressed against the driven side clutch plate and the driven side clutch plate to apply the driving force of the engine.
- Non-operation that can block the transmission of the driving force of the engine to the wheels by releasing the pressure contact force between the driving side clutch plate and the driven side clutch plate and the operating position that can be transmitted to the wheels.
- a power transmission device including a centrifugal clutch means capable of releasing the pressure contact force between the clutch plate and the driven side clutch plate and blocking the transmission of the driving force of the engine to the wheels, wherein the centrifugal clutch means.
- a part of the pressure contact member that moves in the stacking direction of the plate and the driven side clutch plate to press-contact the drive side clutch plate and the driven side clutch plate and a part of the through hole formed in the weight member are projected.
- the holding member rolls by projecting a part from the other opening of the first spherical member formed in the weight member and the through hole formed in the weight member.
- It is configured to include a second spherical member that is in contact with a surface and is capable of rolling, and the through hole is formed in a tapered shape from one opening to the other, and the first through hole is formed in a tapered shape.
- the spherical member is characterized in that it is prevented from coming off at the outer peripheral edge portion of the one opening and the other opening having a small diameter.
- the first spherical member and the second spherical member are composed of spherical members having different diameters according to the inner diameter of the through hole. It is characterized in that it can be rolled while in contact with the inner peripheral surface of the.
- the invention according to claim 3 is characterized in that, in the power transmission device according to claim 1 or 2, the second spherical member is prevented from coming off by a rolling surface of the holding member or the pressure contact member. ..
- the invention according to claim 4 is characterized in that, in the power transmission device according to claim 3, the rolling surface of the holding member and / or the pressure contact member has a groove shape along the moving direction of the weight member.
- the through hole of the weight member in the centrifugal clutch means is formed in a tapered shape from one opening to the other opening, and the first spherical member is the one opening and the other. Since the outer peripheral edge of the small-diameter opening is prevented from coming off, the first spherical member can be easily and accurately attached to the weight member, and the manufacturing cost can be reduced.
- the first spherical member and the second spherical member are made of spherical members having different diameters according to the inner diameter of the through hole, and roll in a state of being in contact with the inner peripheral surface of the through hole. Since it is possible, the first spherical member and the second spherical member can be stably rolled when the weight member is moved, and smooth movement can be achieved.
- the first spherical member and the second spherical member can be easily prevented from coming off. Can be done.
- the rolling surface of the holding member and / or the pressure contact member has a groove shape along the moving direction of the weight member, the second spherical member is prevented from coming off and has a small diameter on the large diameter opening side. It is possible to ensure smoother movement of the weight member while ensuring that the first spherical member is prevented from coming off on the opening side of the above.
- FIG. 1 is a cross-sectional view taken along the line II-II. Section III-III sectional view in FIG. Perspective view showing a clutch housing in the same power transmission device Three views showing the first clutch member in the power transmission device Perspective view showing the first clutch member Three views showing the second clutch member in the power transmission device Perspective view showing the second clutch member Three views showing a pressure member in the power transmission device Perspective view showing the pressure member Longitudinal sectional view showing centrifugal clutch means in the same power transmission device Partially broken perspective view showing the centrifugal clutch means Three views showing the holding members constituting the centrifugal clutch means Three views showing the support members constituting the centrifugal clutch means Three views showing the pressure welding member constituting the centrifugal clutch means Four views showing weight members constituting the centrifugal clutch means FIG.
- FIG. 16 is a cross-sectional view taken along the line XVII-XVII.
- Top view showing the state where the weight member in the centrifugal clutch means is in the inner diameter side position.
- Top view showing a state where the weight member in the centrifugal clutch means is in the outer diameter side position.
- Schematic diagram showing a vehicle to which the same power transmission device is applied Schematic diagram showing a state in which the weight member in the power transmission device is located at the inner diameter side position.
- Cross-sectional view showing a state in which the weight member in the power transmission device is in an intermediate position between the inner diameter side position and the outer diameter side position.
- Cross-sectional view showing a state in which the weight member in the power transmission device is in the outer diameter side position.
- Cross-sectional view showing a state in which the weight member in the power transmission device is in the outer diameter side position and the pressure member is in the non-operating position.
- the power transmission device K is arranged in the vehicle and arbitrarily transmits or shuts off the driving force of the engine E to the drive wheel T side via the mission M.
- the clutch housing 2 in which the input gear 1 (input member) that rotates by the driving force of the engine E of the vehicle is formed, and the output shaft 3 (output member) connected to the mission M.
- a centrifugal clutch means including a clutch member (first clutch member 4a and second clutch member 4b), a pressure member 5, a plurality of drive-side clutch plates 6, a plurality of driven-side clutch plates 7, and a weight member 10. 9 and an auxiliary clutch plate 17 are included.
- the input gear 1 is made rotatable around the output shaft 3 when the driving force (rotational force) transmitted from the engine E is input, and is connected to the clutch housing 2 by a rivet or the like.
- the clutch housing 2 is composed of a cylindrical member having an open right end side in FIGS. 2 and 3 and is configured to be connected to the input gear 1 so that the clutch housing 2 can rotate with the rotation of the input gear 1 by the driving force of the engine E. ing.
- the clutch housing 2 is formed with a plurality of notches 2a in the circumferential direction, and a plurality of drive-side clutch plates 6 are attached by fitting the notches 2a.
- Each of the drive-side clutch plates 6 is made of a plate material formed in a substantially annular shape, rotates with the rotation of the clutch housing 2, and can slide in the axial direction (left-right direction in FIGS. 2 and 3). Has been done.
- a plurality of driven side clutch plates 7 alternately formed with the drive side clutch plate 6 of the clutch housing 2 are attached to the clutch member (first clutch member 4a and second clutch member 4b), and the clutch member (first clutch member 4a and second clutch member 4b) is attached via the transmission M of the vehicle. It is connected to an output shaft 3 (output member) capable of rotating the drive wheel T, and is configured by assembling two members, a first clutch member 4a and a second clutch member 4b.
- the first clutch member 4a is configured such that the output shaft 3 is inserted into an insertion hole (see FIGS. 5 and 6) formed in the center thereof, and the gears formed are meshed with each other and connected in the rotational direction.
- the first clutch member 4a is formed with a gradient surface 4aa forming a pressure welding assist cam and a gradient surface 4ab forming a back torque limiter cam.
- Reference numeral 4ac in the figure indicates a boss portion in which an insertion hole for a bolt B for connecting the first clutch member 4a and the fixing member 8 is formed.
- the second clutch member 4b is formed of an annular member on which the flange portion 4bb is formed, and the driven side clutch plate 7 is splined on the spline fitting portion 4ba formed on the outer peripheral surface. It is configured to be attached by mating. Then, as shown in FIGS. 2 and 3, a pressure member 5 is assembled to the clutch members (first clutch member 4a and second clutch member 4b), and the flange portion 5c of the pressure member 5 and the second clutch member 4b A plurality of drive-side clutch plates 6 and driven-side clutch plates 7 are alternately attached to the flange portion 4bb of the above in a laminated state.
- the pressure member 5 is composed of a disk-shaped member having a flange portion 5c formed over the peripheral edge portion, and the drive side clutch plate 6 and the driven side clutch plate 7 are brought into pressure contact with each other.
- the driving force of the engine E is transmitted to the wheels by releasing the operating position in which the driving force of the engine E can be transmitted to the wheels and the pressure contact force between the driving side clutch plate 6 and the driven side clutch plate 7. It is movable to and from a non-operating position that can block the.
- the spline fitting portion 4ba formed on the second clutch member 4b is integrally formed over substantially the entire circumference of the outer peripheral side surface of the second clutch member 4b. It is configured with a formed uneven shape, and by fitting the driven side clutch plate 7 into the concave groove forming the spline fitting portion 4ba, the driven side clutch plate 7 is axially oriented with respect to the second clutch member 4b. The movement in the rotation direction is restricted while allowing the movement, and the clutch member 4b is configured to be able to rotate together with the second clutch member 4b.
- the driven side clutch plate 7 is alternately laminated with the drive side clutch plate 6, and the adjacent clutch plates 6 and 7 can be pressure-welded or the pressure-contacting force can be released. That is, both clutch plates 6 and 7 are allowed to slide in the axial direction of the second clutch member 4b, and the clutch plates (6a, 6b, 7a, 7b) are pressed against each other to disengage the clutch. , The rotational force of the clutch housing 2 is transmitted to the output shaft 3 via the second clutch member 4b and the first clutch member 4a, and the pressure contact force of each clutch plate (6a, 6b, 7a, 7b) is released. When the clutch is disengaged, the first clutch member 4a and the second clutch member 4b do not follow the rotation of the clutch housing 2, and the rotational force is not transmitted to the output shaft 3.
- the pressure member 5 has a plurality of fitting holes 5d (three in the present embodiment) formed in the circumferential direction, and a clutch spring S is formed in each fitting hole 5d. It is fitted. As shown in FIG. 2, one end of the clutch spring S is in contact with the fixing member 8 while being housed in the fitting hole 5d, and the clutch spring S is urged in the direction of pressure contact between the drive side clutch plate 6 and the driven side clutch plate 7. Has been done. Then, by operating a clutch operating means (not shown), it is possible to perform pressure welding or release of pressure welding of the driving side clutch plate 6 and the driven side clutch plate 7.
- the first clutch member 4a is formed with the gradient surfaces 4aa and 4ab
- the pressure member 5 is formed with these gradient surfaces 4aa.
- the gradient surfaces 5a and 5b facing 4ab are formed. That is, the gradient surface 4aa and the gradient surface 5a are in contact with each other to form a pressure welding assist cam, and the gradient surface 4ab and the gradient surface 5b are in contact with each other to form a back torque limiter cam.
- the centrifugal clutch means 9 is a weight that can be moved from the inner diameter side position (see FIG. 18) to the outer diameter side position (see FIG. 19) by the centrifugal force accompanying the rotation of the clutch housing 2.
- a member 10 is provided, and when the weight member 10 is in the outer diameter side position, the drive side clutch plate 6 and the driven side clutch plate 7 can be brought into pressure contact with each other to transmit the driving force of the engine E to the wheels (drive wheels T).
- the weight member 10 is in the inner diameter side position, the pressure contact force between the drive side clutch plate 6 and the driven side clutch plate 7 is released, and the drive force of the engine E is transmitted to the wheels (drive wheels T). It is configured to block the clutch.
- the centrifugal clutch means 9 includes a weight member 10 composed of a piece-shaped member, a holding member 11 to which a support member 13 is attached, a pressure contact member 12, a first spherical member 14, and a second spherical member. It is configured to include a member 15 and an urging member 16 made of a coil spring.
- the holding member 11 and the pressure contact member 12 are formed with a plurality of protrusions in the circumferential direction, and are fitted and attached to the notch 2a of the clutch housing 2 like the drive-side clutch plate 6. ..
- the holding member 11 and the pressure contact member 12 are made movable in the axial direction of the clutch housing 2, respectively, and are engaged in the rotational direction so as to be rotatable together with the clutch housing 2.
- the weight member 10 is composed of a piece-shaped member having one surface X and the other surface Y, and penetrates from one surface X to the other surface Y as shown in FIG. It is configured to have a through hole 10a formed in the above, an insertion portion 10b formed on the other surface Y, and a groove 10c formed on the one surface X.
- the weight member 10 is housed in the housing portion 11a of the holding member 11, is held at the inner diameter side position (see FIG. 18) without applying centrifugal force, and is centrifuged. When the force is applied, the urging member 16 moves outward against the urging force and reaches the outer diameter side position (see FIG. 19).
- the holding member 11 movably holds the weight member 10 between the inner diameter side position and the outer diameter side position.
- the holding member 11 is composed of an annular member, and a plurality of holding members 11 are formed in the circumferential direction.
- it is configured to have an accommodating portion 11a for accommodating the weight member 10, a groove shape 11b formed in the accommodating portion 11a, and a pressing surface 11c.
- Each accommodating portion 11a has a concave shape that matches the shape and movement range of the weight member 10, and is configured so that one end of the urging member 16 can come into contact with the inner peripheral wall surface 11aa thereof.
- the support member 13 is fixed to the surface of the holding member 11 on which the accommodating portion 11a is formed.
- the support member 13 is formed with a holding portion 13a formed in the radial direction, and the weight member 10 is held by the holding portion 13a matching the groove 10c of the weight member 10. It is held at 11. That is, the weight member 10 has a groove 10c formed in the direction from the inner diameter side position to the outer diameter side position at the center position of one of the surfaces X, and by matching the holding portion 13a with the groove 10c, the diameter thereof is increased. It is held so as to be movable in the direction (the direction from the inner diameter side position to the outer diameter side position).
- the pressure contact member 12 moves in the stacking direction (right side in FIGS. 2 and 3) of the drive side clutch plate 6 and the driven side clutch plate 7 by moving the weight member 10 from the inner diameter side position to the outer diameter side position.
- the side clutch plate 6 and the driven side clutch plate 7 are pressed against each other.
- the pressure contact member 12 is composed of an annular member, and is formed at a plurality of gradient grooves 12a formed in the circumferential direction and at positions where the gradient grooves 12a are formed, respectively. It is configured to have a groove shape 12b and a pressing surface 12c.
- the gradient grooves 12a are formed at positions corresponding to the weight members 10, respectively, and have an upward gradient from the inside to the outside.
- the weight member 10 is held at the inner diameter side position by the urging force of the urging member 16, and when the clutch housing 2 rotates, a centrifugal force is applied to the weight member 10 to ascend.
- the pressure contact member 12 moves in a direction away from the holding member 11 (that is, a direction in which the drive side clutch plate 6 and the driven side clutch plate 7 are pressure contacted).
- the gradient groove 12a is located corresponding to each weight member 10 as shown in FIGS. 11 and 12, and the centrifugal force
- the pressure welding member 12 moves in the direction of the arrow in FIG. 11 (right side in the drawing), and the pressing force formed on the pressure welding member 12
- the surface 12c presses the driving side clutch plate 6 and the driven side clutch plate 7 to bring them into a pressure contact state, and the holding member 11 moves in the direction opposite to the arrow in FIG. 11 (left side in the drawing) due to the reaction force.
- the pressing surface 11c formed on the holding member 11 press-contacts the auxiliary clutch plate 17.
- the weight member 10 according to the present embodiment is accommodated in a plurality of accommodating portions 11a formed in the circumferential direction of the holding member 11, and can be moved in the radial direction.
- a plurality of urging members 16 are arranged in the circumferential direction (two each in the present embodiment) between the inner peripheral wall surface 11aa (see FIG. 13) of the accommodating portion 11a and the weight member 10, and the weight member 10 is provided. It is urged from the outer diameter side position to the inner diameter side position.
- the inner peripheral wall surface 11aa of the accommodating portion 11a is a flat surface that is in contact with one end of the urging member 16, so that the urging member 16 can be attached in a stable state.
- the weight member 10 has a tunnel-shaped insertion portion 10b that can be attached by inserting the urging member 16 while opening the surface facing the holding member 11 (the other surface Y in FIG. 17). It is formed. Then, by accommodating the weight member 10 in the state where the urging member 16 is inserted into the insertion portion 10b in the accommodating portion 11a of the holding member 11, the urging member 16 becomes the inner peripheral wall surface 11aa of the accommodating portion 11a and the weight member 10. It will be installed between the two.
- the urging member 16 is arranged so that one end is in contact with the inner peripheral wall surface 11aa and the other end is in contact with the end wall surface 10ba of the insertion portion 10b, and the weight member 10 is arranged from the outer diameter side to the inner diameter side. It can be urged toward the position.
- the first spherical member 14 is made of a steel ball attached to the weight member 10, and as shown in FIGS. 16 and 17, one opening 10aa of the through hole 10a formed in the weight member 10 (on one surface X side). A part of the pressure contact member 12 is projected from the small diameter opening) to come into contact with the rolling surface of the pressure contact member 12 so that the pressure welding member 12 can roll.
- the second spherical member 15 is made of a steel ball attached to the weight member 10, and as shown in FIGS. 16 and 17, the other opening 10ab (the other surface Y) of the through hole 10a formed in the weight member 10 is formed. A part of the large-diameter opening on the side) is projected to come into contact with the rolling surface of the holding member 11 so that the holding member 11 can roll.
- the through hole 10a is formed from one opening 10aa (small diameter opening on one surface X side) to the other opening 10ab (large diameter opening on the other surface Y side).
- the first spherical member 14 is formed in a tapered shape so as to continuously increase in diameter, and the first spherical member 14 has a smaller diameter opening (in the present embodiment, one surface X) of the one opening 10aa and the other opening 10ab. It is prevented from coming off at the outer peripheral edge of one of the openings 10aa) on the side.
- the first spherical member 14 and the second spherical member 15 according to the present embodiment have spherical members having different diameters according to the inner diameter of the through hole 10a (the second spherical member 15 is larger than the first spherical member 14).
- a member having a diameter) and the small-diameter first spherical member 14 can roll in contact with the inner peripheral surface of the through hole 10a while being prevented from coming off at the opening edge on the small diameter side of the through hole 10a. It is said that.
- the second spherical member 15 is prevented from coming off by the rolling surface of the holding member 11.
- the small-diameter first spherical member 14 is prevented from coming off at the opening edge on the small-diameter side of the through hole 10a
- the large-diameter second spherical member 15 is prevented from coming off from the opening on the large-diameter side of the through hole 10a.
- a part of the holding member 11 is prevented from coming off by the rolling surface while protruding.
- the large-diameter second spherical member 15 is assembled so as to face the rolling surface of the holding member 11, but the second spherical member 15 faces the rolling surface of the pressure contact member 12. May be assembled.
- the small-diameter first spherical member 14 is prevented from coming off at the opening edge on the small-diameter side of the through hole 10a
- the large-diameter second spherical member 15 is prevented from coming off from the opening on the large-diameter side of the through hole 10a.
- a part of the pressure contact member 12 is prevented from coming off on the rolling surface while protruding.
- the rolling surface of the holding member 11 (the rolling surface of the second spherical member 15 in the present embodiment) is the moving direction of the weight member 10 (inner diameter side position and outer diameter side position).
- the rolling surface of the pressure contact member 12 (the rolling surface of the first spherical member 14 in this embodiment) is formed of the weight member 10 as shown in FIG.
- the groove shape 12b is formed along the moving direction (the direction connecting the inner diameter side position and the outer diameter side position).
- the first spherical member 14 and the second spherical member 15 are each located in the circumferential direction of the holding member 11 (the width direction of the weight member 10).
- two first spherical members 14 and two second spherical members 15 are formed), and the first spherical member 14 and the second spherical member 15 are through holes, respectively, as the weight member 10 moves. It is possible to move along the groove shapes 11b and 12b while rolling within 10a.
- the auxiliary clutch plate 17 is composed of an annular member having a diameter different from that of the drive-side clutch plate 6 and the driven-side clutch plate 7 (in the present embodiment, a diameter smaller than that of the drive-side clutch plate 6 and the driven-side clutch plate 7).
- the output shaft 3 (output member) is inserted into the central opening 17a to be in a fitted state, and has a pressed surface 17b facing the pressing surface 11c of the holding member 11. It is configured.
- the auxiliary clutch plate 17 is attached to the pressing surface 11c formed on the holding member 11 when the weight member 10 is in the outer diameter side position (that is, when the driving side clutch plate 6 and the driven side clutch plate 7 are in a pressure contact state).
- the driving force of the engine E can be transmitted to the output shaft 3.
- the weight member 10 is in the inner diameter side position (that is, when the pressure contact force of the drive side clutch plate 6 and the driven side clutch plate 7 is in the released state)
- the pressing force formed by the pressing surface 11c formed on the holding member 11 is applied.
- the pressure contact force is reduced and the pressure contact force is released, it is possible to block the transmission of the driving force of the engine E to the output shaft 3.
- the gradient groove 12a functions as a cam, and the holding member 11 and the pressure contact member 12 move in a direction away from each other.
- the pressing surface 12c of the pressure contact member 12 presses against the drive side clutch plate 6 and the driven side clutch plate 7, and the pressing surface 11c of the holding member 11 presses against the pressed surface 17b of the auxiliary clutch plate 17 to press contact. Therefore, the driving force of the engine E is transmitted to the driving wheels T.
- the first clutch member 4a has a contact surface 4ad formed on a part of the surface facing the pressure member 5, and the pressure member 5 is shown in FIG.
- a contact surface 5e is formed on a part of the surface facing the first clutch member 4a, and the first clutch member 4a, the second clutch member 4b and the pressure member 5 are assembled.
- the contact surface 4ad and the contact surface 5e are in contact with each other as shown in FIGS. It is said to be in a state.
- the weight member 10 of the centrifugal clutch means 9 further moves from the intermediate position (see FIG. 23) toward the outer diameter side position (see FIG. 24), and is pressed by the flange portion 4bb of the second clutch member 4b to drive the drive side.
- the clutch plate 6 and the driven side clutch plate 7 are in pressure contact with each other and the pressing force of the flange portion 4bb becomes equal to or greater than the urging force of the clutch spring S, the second clutch member 4b and the pressure member 5 with respect to the first clutch member 4a. Is moved in the axial direction (right direction in FIGS. 2 and 3) to separate the contact surface 4ad of the first clutch member 4a and the contact surface 5e of the pressure member 5.
- FIG. 25 shows a state in which the weight member 10 is in the outer diameter side position and the pressure member 5 is in the non-operating position (clutch off state).
- the weight member 10 of the centrifugal clutch means 9 moves from the inner diameter side position to the outer diameter side position and outputs from the input gear 1 (input member).
- the relative movement between the first clutch member 4a and the pressure member 5 is allowed, so that the operation of the pressure welding assist cam is allowed. ..
- the through hole 10a of the weight member 10 in the centrifugal clutch means 9 is formed in a tapered shape from one opening 10aa to the other opening 10ab and has a first spherical shape. Since the member 14 is prevented from coming off at the outer peripheral edge of the small diameter opening of the one opening 10aa and the other opening 10ab, the first spherical member 14 can be easily and accurately attached to the weight member 10. The manufacturing cost can be reduced.
- the first spherical member 14 and the second spherical member 15 are made of spherical members having different diameters according to the inner diameter of the through hole 10a, and can roll in a state of being in contact with the inner peripheral surface of the through hole 10a. Therefore, when the weight member 10 is moved, the first spherical member 14 and the second spherical member 15 can be stably rolled, and smooth movement can be achieved. Further, since the second spherical member 15 according to the present embodiment is prevented from coming off by the rolling surface of the holding member 11 or the pressure contact member 12, it is easy to prevent the first spherical member 14 and the second spherical member 15 from coming off. Can be done.
- the rolling surface of the holding member 11 or the pressure contact member 12 has a groove shape (11b, 12b) along the moving direction of the weight member 10, the second spherical member 15 is prevented from coming off on the large diameter opening side.
- the weight member 10 can be moved more smoothly while ensuring that the first spherical member 14 is prevented from coming off on the opening side having a small diameter.
- the weight member 10 is accommodated in a plurality of accommodating portions 11a formed in the circumferential direction of the holding member 11 so as to be movable in the radial direction, and the urging member 16 is provided with the urging member 16. Since a plurality of weight members 10 are arranged in the circumferential direction between the inner peripheral wall surface 11aa of the accommodating portion 11a and the weight member 10 and urge the weight members 10 from the outer diameter side position to the inner diameter side position, the weight member 10 is removed. It is possible to accurately urge the weight member 10 from the diameter side position to the inner diameter side position, and the weight member 10 can be stably moved according to the centrifugal force.
- the weight member 10 since the insertion portion 10b that can be attached by inserting the urging member 16 while opening the surface facing the holding member 11 is formed, the weight member 10 is urged to the weight member 10. The assembly of 16 can be easily performed. Further, in the weight member 10 according to the present embodiment, a groove 10c is formed in the direction from the inner diameter side position to the outer diameter side position, and the holding member 11 (specifically, fixed to the holding member 11 and integrated). Since the supporting member 13) is formed with the holding portion 13a that fits the groove 10c and holds the weight member 10, the weight member 10 can be stably moved.
- the centrifugal clutch means 9 projects a part from one opening 10aa of the through hole 10a formed in the weight member 10 and comes into contact with the rolling surface (groove shape 12b) of the pressure contact member 12.
- a part of the first spherical member 14 that can be rolled and the other opening 10ab of the through hole 10a formed in the weight member 10 is projected onto the rolling surface (groove shape 11b) of the holding member 11. Since it is configured to include the second spherical member 15 that can be contacted and rolled, the weight member 10 can be moved more stably.
- the holding member 11 or the pressure contact member 12 has a groove shape (11b, 12b) along the moving direction of the weight member 10, and the groove shape (11b, 12b) is the first spherical member 14 or the second spherical member. Since the rolling surface of 15 is used, the weight member 10 can be moved more smoothly. Further, since a plurality of the first spherical member 14 and the second spherical member 15 according to the present embodiment are formed in the circumferential direction of the holding member 11 (the width direction of the weight member 10), the weight member is even more stable. 10 movements can be planned.
- the present invention is not limited thereto, and for example, a pressure welding assist cam (gradient surface 4aa and gradient surface 5a) and a back torque limiter cam (gradient surface 4ab and gradient surface 5b) are described. ) May not be provided, or the auxiliary clutch plate 17 may not be provided. Further, in the present embodiment, the second spherical member 15 is prevented from coming off by the rolling surface (groove shape 11a) of the holding member 11 (or the pressure contact member 12), but other means for preventing coming off such as caulking. And may be prevented by the method.
- 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.
- the centrifugal clutch means includes a holding member that movably holds the weight member between the inner diameter side position and the outer diameter side position, and a drive side clutch plate and a drive side clutch plate by moving the weight member from the inner diameter side position to the outer diameter side position.
- a pressure contact member that moves in the stacking direction of the driven side clutch plate to press-contact the drive side clutch plate and the driven side clutch plate, and a pressure contact member that partially protrudes from one opening of a through hole formed in the weight member.
- a part of the first spherical member that is made capable of rolling by contacting the rolling surface of the weight member and a part of the through hole formed in the weight member are projected from the other opening to come into contact with the rolling surface of the holding member and roll.
- It is configured to include a second spherical member that is movable, and the through hole is formed in a tapered shape from one opening to the other opening, and the first spherical member is formed of the one opening and the other opening.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
Abstract
Description
本実施形態に係る動力伝達装置Kは、図21に示すように、車両に配設されて任意にエンジンEの駆動力をミッションMを介して駆動輪T側へ伝達し又は遮断するためのもので、図1~17に示すように、車両のエンジンEの駆動力で回転する入力ギア1(入力部材)が形成されたクラッチハウジング2と、ミッションMに接続された出力シャフト3(出力部材)と、クラッチ部材(第1クラッチ部材4a及び第2クラッチ部材4b)と、プレッシャ部材5と、複数の駆動側クラッチ板6及び複数の被動側クラッチ板7と、ウェイト部材10を具備した遠心クラッチ手段9と、補助クラッチ板17とを有して構成されている。
2 クラッチハウジング
2a 切欠き
3 出力シャフト(出力部材)
4a 第1クラッチ部材
4aa 勾配面(圧接アシスト用カム)
4ab 勾配面(バックトルクリミッタ用カム)
4ac ボス部
4ad 当接面
4b 第2クラッチ部材
4ba スプライン嵌合部
4bb フランジ部
5 プレッシャ部材
5a 勾配面(圧接アシスト用カム)
5b 勾配面(バックトルクリミッタ用カム)
5c フランジ部
5d 嵌入穴
5e 当接面
6 駆動側クラッチ板
7 被動側クラッチ板
8 固定部材
9 遠心クラッチ手段
10 ウェイト部材
10a 貫通孔
10aa 一方の開口
10ab 他方の開口
10b 挿通部
10ba 端部壁面
10c 溝
11 保持部材
11a 収容部
11aa 内周壁面
11b 溝形状
11c 押圧面
12 圧接部材
12a 勾配溝
12b 溝形状
12c 押圧面
13 支持部材
13a 保持部
14 第1球状部材
15 第2球状部材
16 付勢部材
17 補助クラッチ板
17a 中央開口
17b 被押圧面
S クラッチスプリング
Claims (4)
- 車両のエンジンの駆動力で回転する入力部材と共に回転し、複数の駆動側クラッチ板が取り付けられた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、車両の車輪を回転させ得る出力部材と連結されたクラッチ部材と、
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て前記エンジンの駆動力を前記車輪に伝達可能な状態とする作動位置と、当該駆動側クラッチ板と被動側クラッチ板との圧接力を解放させて前記エンジンの駆動力が前記車輪に伝達されるのを遮断し得る非作動位置との間で移動可能なプレッシャ部材と、
前記クラッチハウジングの回転に伴う遠心力により内径側位置から外径側位置に移動可能とされたウェイト部材を具備し、当該ウェイト部材が前記外径側位置にあるとき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て前記エンジンの駆動力を前記車輪に伝達可能な状態とするとともに、当該ウェイト部材が前記内径側位置にあるとき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解放させて前記エンジンの駆動力が前記車輪に伝達されるのを遮断し得る遠心クラッチ手段と、
を具備した動力伝達装置であって、
前記遠心クラッチ手段は、
前記ウェイト部材を前記内径側位置と外径側位置との間で移動可能に保持する保持部材と、
前記ウェイト部材が前記内径側位置から外径側位置に移動することにより前記駆動側クラッチ板及び被動側クラッチ板の積層方向に移動して当該駆動側クラッチ板と被動側クラッチ板とを圧接させる圧接部材と、
前記ウェイト部材に形成された貫通孔の一方の開口から一部を突出させて前記圧接部材の転動面に接触して転動可能とされた第1球状部材と、
前記ウェイト部材に形成された貫通孔の他方の開口から一部を突出させて前記保持部材の転動面に接触して転動可能とされた第2球状部材と、
を具備して構成され、前記貫通孔は、前記一方の開口から他方の開口に亘ってテーパ状に形成されるとともに、前記第1球状部材は、当該一方の開口及び他方の開口のうち小径の開口の外周縁部にて抜け止めされたことを特徴とする動力伝達装置。 - 前記第1球状部材及び第2球状部材は、前記貫通孔の内径に応じた互いに異なる径の球状部材から成り、当該貫通孔の内周面に接触した状態で転動可能とされたことを特徴とする請求項1記載の動力伝達装置。
- 前記第2球状部材は、前記保持部材又は圧接部材の転動面にて抜け止めされたことを特徴とする請求項1又は請求項2記載の動力伝達装置。
- 前記保持部材及び又は圧接部材の転動面は、前記ウェイト部材の移動方向に沿った溝形状から成ることを特徴とする請求項3記載の動力伝達装置。
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JP2022515192A JP7391192B2 (ja) | 2020-04-13 | 2020-09-14 | 動力伝達装置 |
US17/918,398 US11852205B2 (en) | 2020-04-13 | 2020-09-14 | Power transmission apparatus |
EP20930808.9A EP4137715A4 (en) | 2020-04-13 | 2020-09-14 | POWER TRANSMISSION DEVICE |
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