WO2020246429A1 - クラッチ装置 - Google Patents
クラッチ装置 Download PDFInfo
- Publication number
- WO2020246429A1 WO2020246429A1 PCT/JP2020/021627 JP2020021627W WO2020246429A1 WO 2020246429 A1 WO2020246429 A1 WO 2020246429A1 JP 2020021627 W JP2020021627 W JP 2020021627W WO 2020246429 A1 WO2020246429 A1 WO 2020246429A1
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- WO
- WIPO (PCT)
- Prior art keywords
- clutch
- center
- pressure
- side protruding
- plate
- Prior art date
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Classifications
-
- 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
- F16D13/58—Details
- F16D13/60—Clutching elements
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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
- F16D13/58—Details
- F16D13/70—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members
Definitions
- the present invention relates to a clutch device that transmits and shuts off the rotational driving force of a driving shaft that is rotationally driven by a prime mover to a driven shaft that drives a driven body.
- a clutch device is arranged between a prime mover such as an engine and a driven body such as a wheel to transmit and shut off the rotational driving force of the prime mover to the driven body. It is used.
- a clutch device a plurality of friction plates rotated by a rotational driving force of a prime mover and a plurality of clutch plates connected to a driven body are arranged to face each other, and these friction plates and the clutch plate are brought into close contact with each other and separated from each other. As a result, the rotational driving force can be arbitrarily transmitted and cut off.
- Patent Document 1 a clutch center and a clutch center provided with a convex portion and a concave portion that are fitted to each other on the end faces of spline-shaped portions that hold the clutch plates in the pressure plate and the clutch center that are close to or separated from each other.
- a clutch device that prevents the clutch plate from falling off when the pressure plate and the pressure plate are separated from each other is disclosed.
- the present invention has been made to address the above problems, and an object of the present invention is to provide a clutch device capable of improving the flowability of clutch oil.
- the feature of the present invention is that in a clutch device that transmits and shuts off the rotational driving force of the driving shaft to the driven shaft, the clutch device is arranged to face a plurality of friction plates that are rotationally driven by the rotational driving of the driving shaft.
- a plurality of clutch plates composed of an annular flat plate and having internal teeth on the inner peripheral portion of the flat plate, and a center clutch having external teeth fitted to the internal teeth of the clutch plate and connected to a driven shaft.
- the center includes a pressure clutch that has external teeth that fit into the internal teeth of the clutch plate and is displaceably adjacent to the center clutch in the directions of approaching and separating, respectively, to press the friction plate or the clutch plate.
- the end faces facing each other are formed flat without unevenness, the outer teeth are formed in the same tip circle, and the teeth of the outer teeth in the center clutch and the pressure clutch are partially formed.
- the center side relief part and the pressure side relief part omitted, and the pressure side protrusion tooth and the center side protrusion tooth in which at least one of the external teeth projects to the center side relief part and the pressure side relief part, respectively.
- the end faces of the center clutch and the pressure clutch facing each other are formed flat without unevenness, and only the pressure side protruding teeth and the center side protruding teeth are on the center side. Since it is formed so as to project to the relief portion and the relief portion on the pressure side, it is possible to improve the flowability by suppressing the flow of the clutch oil while preventing the friction plate and / or the clutch plate from falling off. ..
- the center side relief portion and the pressure side relief portion are at the same height as the tooth bottom of the external tooth on which the center side relief portion and the pressure side relief portion are formed, in other words, below the virtual extension surface of the tooth bottom surface. It is good to form.
- the pressure-side protruding teeth and the center-side protruding teeth are axially oriented in the circumferential direction of the center clutch and the pressure clutch when the pressure clutch is most separated from the center clutch. It is formed in a length that overlaps with each other.
- the lengths of the pressure side protruding teeth and the center side protruding teeth are centered even when the pressure clutch is most separated from the center clutch.
- the lengths of the clutch and the pressure clutch are formed so as to overlap each other in the axial direction in the circumferential direction.
- the pressure-side protruding teeth and the center-side protruding teeth are axially oriented in the circumferential direction of the center clutch and the pressure clutch when the pressure clutch is most separated from the center clutch.
- the tips are formed so that they are flush with each other.
- the lengths of the pressure side protruding teeth and the center side protruding teeth are centered even when the pressure clutch is most separated from the center clutch.
- the length is formed so as to be flush with each other in the circumferential direction of the clutch and the pressure clutch.
- Another feature of the present invention is that in the clutch device, the pressure-side protruding teeth and the center-side protruding teeth are shafted in the circumferential direction of the center clutch and the pressure clutch when the pressure clutch is most separated from the center clutch.
- the width is less than the thickness of the clutch plate in the direction, and the tips are formed so as to be separated from each other.
- the clutch device when the pressure clutch is most separated from the center clutch, the lengths of the pressure side protruding teeth and the center side protruding teeth are the center clutch and the pressure. A width less than the thickness of the clutch plate in the axial direction on the circumferential direction of the clutch is formed so that the tips thereof are separated from each other.
- the clutch device can prevent the clutch plates fitted to the pressure-side protruding teeth and the center-side protruding teeth from falling off, and can provide an axially displaceable range on the pressure-side protruding teeth and the center-side protruding teeth, respectively. Since it can be maximized, the flowability of the clutch oil can be improved and the drag torque can be reduced.
- Another feature of the present invention is that, in the clutch device, the pressure-side protruding tooth and the center-side protruding tooth are formed so that their outer shapes become thinner toward the tip portion.
- the pressure-side protruding tooth and the center-side protruding tooth have a smaller outer shape (for example, tooth thickness and / or total tooth depth) toward the tip portion, respectively. Therefore, the flowability of the clutch oil can be further improved.
- Another feature of the present invention is that in the clutch device, the pressure-side protruding teeth and the center-side protruding teeth are alternately formed along the circumferential direction of the center clutch and the pressure clutch.
- the pressure side protruding teeth and the center side protruding teeth are alternately formed along the circumferential direction of the center clutch and the pressure clutch, so that the clutch oil The clutch plate can be stably held while suppressing the bias of the flow.
- FIG. 5 is a perspective view schematically showing an external configuration in a state in which the center clutch shown in FIG. 2 and the pressure clutch shown in FIG. 4 are combined.
- FIG. 5 is a perspective view schematic appearance structure of the pressure clutch incorporated in the clutch device shown in FIG.
- FIG. 5 is a cross-sectional view showing a state in which the friction plate and the clutch plate are biased toward the center clutch side by the maximum number of pieces when the clutch device shown in FIG. 1 is in the clutch OFF state.
- FIG. 5 is a cross-sectional view showing a state in which the friction plate and the clutch plate are biased toward the pressure clutch side by the maximum number of pieces when the clutch device shown in FIG. 1 is in the clutch OFF state. It is explanatory drawing which shows typically the relationship between the center side protruding tooth and the pressure side protruding tooth in the clutch OFF state of the clutch device shown in FIG. 1.
- FIG. 1 is a cross-sectional view showing an outline of the overall configuration of the clutch device 100 according to the present invention. It should be noted that each of the figures referred to in the present specification is schematically shown by exaggerating some of the components in order to facilitate the understanding of the present invention. Therefore, the dimensions and ratios between the components may be different.
- the clutch device 100 is a mechanical device for transmitting and blocking the driving force of an engine (not shown), which is a prime mover in a two-wheeled vehicle (motorcycle), to wheels (not shown), which are driven objects. It is placed between the transmission and the transmission (not shown).
- the clutch device 100 includes a clutch housing 101.
- the clutch housing 101 is a component for holding the friction plate 103 and transmitting the driving force from the engine to the friction plate 103, and is formed by molding an aluminum alloy material into a bottomed cylindrical shape. More specifically, an internal gear-shaped spline is formed in the tubular portion of the clutch housing 101, and a plurality of (five in this embodiment) friction plates 103 are formed on the spline of the clutch housing 101. It is held by spline fitting in a state where it can be displaced along the axial direction of the clutch housing 101 and can rotate integrally with the clutch housing 101.
- the left side surface of the clutch housing 101 is attached to the input gear 102 by a rivet 101a via a torque damper (not shown).
- the input gear 102 is a gear component that is rotationally driven by meshing with a drive gear (not shown) that is rotationally driven by driving the engine, and is rotatably supported by a shaft 112 described later via a bearing 102a. That is, the clutch housing 101 is rotationally driven integrally with the input gear 102 independently of the shaft 112 at a position concentric with the shaft 112.
- the friction plate 103 is a flat plate annular part pressed against the clutch plate 104, and is formed by punching a thin plate material made of an aluminum material in an annular shape. On both side surfaces (front and back surfaces) of these friction plates 103, friction materials made of a plurality of pieces of paper (not shown) are attached, and oil grooves (not shown) are formed between the friction materials. Further, these friction plates 103 are formed to have the same size and shape, respectively.
- a plurality of (four in this embodiment) clutch plates 104 are held by the center clutch 105 and the pressure clutch 113 in a state of being sandwiched between the friction plates 103, respectively.
- the clutch plate 104 is a flat plate annular part pressed against the friction plate 103, and is formed by punching a thin plate material made of SPCC (cold rolled steel plate) material in an annular shape. Oil grooves (not shown) having a depth of several ⁇ m to several tens of ⁇ m for holding clutch oil are formed on both side surfaces (front and back surfaces) of these clutch plates 104, and the purpose is to improve wear resistance. Surface hardening treatment is applied to each.
- SPCC cold rolled steel plate
- each clutch plate 104 an internal gear shape that splines fits to the center side fitting portion 108 formed in the center clutch 105 and the pressure side fitting portion 117 formed in the pressure clutch 113, respectively. Splines are formed respectively.
- Each of these clutch plates 104 is formed to have the same size and shape. The friction material may be provided on the clutch plate 104 instead of the friction plate 103.
- the center clutch 105 is a component for holding the clutch plate 104 and the pressure clutch 113, respectively, and transmitting the driving force of the engine to the transmission side, and the aluminum alloy material has a substantially cylindrical shape. It is formed by molding. More specifically, the center clutch 105 is mainly configured by integrally forming a connecting portion 105a, an intermediate portion 105b, and a plate holding portion 105c.
- the connecting portion 105a is a portion connected to the shaft 112 while holding the pressure clutch 113, and is formed in a cylindrical shape.
- An internal gear-shaped spline is formed on the inner peripheral surface of the connecting portion 105a along the axial direction of the center clutch 105, and the shaft 112 is spline-fitted to this spline. That is, the center clutch 105 rotates integrally with the shaft 112 at a position concentric with the clutch housing 101 and the shaft 112.
- the intermediate portion 105b is a portion formed between the connecting portion 105a and the plate holding portion 105c, and three support column through holes 107 are formed between the three center-side cam portions 106 arranged in a circumferential shape. It is composed of.
- the three center-side cam portions 106 are convex portions forming the center-side assist cam surface 106a and the center-side slipper cam surface 106b, and are formed so as to extend along the circumferential direction of the center clutch 105. In this case, the three center-side cam portions 106 are uniformly formed along the circumferential direction of the center clutch 105.
- a center-side assist cam surface 106a and a center-side slipper cam surface 106b are formed at both ends of the center clutch 105 in each center-side cam portion 106 in the circumferential direction.
- Each center-side assist cam surface 106a is a portion for generating an assist force for enhancing the pressure contact force between the friction plate 103 and the clutch plate 104 in cooperation with the pressure-side assist cam surface 114a described later, and the center clutch 105.
- Each of the inclined surfaces gradually projects toward the pressure clutch 113 along the circumferential direction of the pressure clutch.
- Each center-side slipper cam surface 106b cooperates with the pressure-side slipper cam surface 114b, which will be described later, to separate the friction plate 103 and the clutch plate 104 at an early stage to shift to a half-clutch state, and is a portion for shifting to a half-clutch state.
- the assist cam surface 106a is formed of an inclined surface that is inclined in the same direction as the center side assist cam surface 106a on the opposite side in the circumferential direction.
- the half-clutch state is an incomplete transmission state in which a part of the driving force of the engine is transmitted to the drive wheel side in a state before the friction plate 103 and the clutch plate 104 in the clutch device 100 are completely in close contact with each other. That is.
- the three column through holes 107 are through holes for passing through the three tubular columns 115, which will be described later. These three support column through holes 107 are formed evenly along the circumferential direction of the center clutch 105 at positions between the three center-side cam portions 106.
- the plate holding portion 105c is a portion that holds a part of the plurality of clutch plates 104, and is formed in a cylindrical shape and an end portion of the cylindrical portion is projected in a flange shape. There is.
- a center-side fitting portion 108 is formed on the outer peripheral surface of the cylindrical portion of the plate holding portion 105c.
- the center-side fitting portion 108 is a portion that holds the clutch plate 104 in a state where it can be displaced along the axial direction of the center clutch 105 and can rotate integrally with the center clutch 105 while sandwiching the friction plate 103. It is composed of external gear-shaped splines. Further, in the center-side fitting portion 108, the center-side protruding tooth 110 and the center-side relief portion 111 are formed in a part of the splines constituting the center-side fitting portion 108, and the pressure-side fitting portion 108 will be described later.
- the portion of the center-side end surface 108a facing the portion 117 excluding the center-side protruding tooth 110, that is, the inner peripheral portion of the spline tooth is formed flat without unevenness.
- the center-side protruding tooth 110 is a portion for preventing the clutch plate 104 and / or the friction plate 103 from falling off, and one of the spline teeth constituting the center-side fitting portion 108 is a pressure clutch.
- the pressure-side fitting portion 117 in 113 is formed so as to extend to a length reaching above the pressure-side relief portion 121.
- the center-side protruding teeth 110 are formed at positions adjacent to the three center-side cam portions 106 on the radial outer side of the center clutch 105, respectively. That is, three center-side protruding teeth 110 are provided evenly arranged along the circumferential direction of the center clutch 105.
- Each of these center-side protruding teeth 110 is the center clutch 105 and the pressure clutch when the tip portion 110a is most separated from the center clutch 105 with respect to the tip portion 120a of the pressure-side protruding tooth 120 described later.
- the length is formed so as to be separated by a width less than the thickness of the clutch plate 104 in the axial direction on the circumferential direction of 113.
- each center-side protruding tooth 110 is formed so that the portion protruding from the center-side fitting portion 108 is slightly thinner from the plate holding portion 105c side toward the tip portion 110a.
- the center side relief portion 111 is a portion for preventing physical interference of the pressure side protruding teeth 120, which will be described later, and is formed of a curved surface by omitting one of the spline teeth constituting the center side fitting portion 108. .. More specifically, in the center side relief portion 111, one spline tooth on the center side fitting portion 108 where the pressure side protruding tooth 120 is located is omitted, and in the circumferential direction with respect to the omitted spline tooth. It is composed of two tooth bases adjacent to each other on both sides of the tooth and a flat arc surface without unevenness directly connected flush with each other.
- the center side relief portion 111 is formed in an even arrangement along the circumferential direction of the center clutch 105 corresponding to the three pressure side protruding teeth 120.
- the center-side relief portions 111 are formed at equal intervals between the three center-side protruding teeth 110 described above.
- the shaft 112 is a shaft body formed in a hollow shape, and one end side (on the right side in the drawing) rotatably supports the input gear 102 and the clutch housing 101 via a cylindrical bearing 102a and fits the spline.
- the matching center clutch 105 is fixedly supported via the nut 112a.
- the other (left side in the drawing) end of the shaft 112 is connected to a transmission (not shown) in a two-wheeled vehicle. That is, the shaft 112 corresponds to the driven shaft in the present invention.
- the pressure clutch 113 is a component for bringing the friction plate 103 and the clutch plate 104 into close contact with each other by pressing the friction plate 103, and the aluminum alloy material is used as the outer diameter of the clutch plate 104. It is formed by molding into a substantially disk shape having an outer diameter of substantially the same size. More specifically, as shown in FIG. 4, the pressure clutch 113 is mainly configured by integrally forming the inner disk portion 113a and the plate holding portion 113b.
- the inner disk portion 113a has three tubular columns 115 between the three pressure-side cam portions 114 arranged in a circumferential shape, and is slidable on the outer peripheral surface of the connection portion 105a in the center clutch 105. It is fitted in the state. That is, the pressure clutch 113 is provided so as to be rotatable independently of the center clutch 105 and the shaft 112 at a position concentric with the clutch housing 101, the center clutch 105 and the shaft 112.
- the three pressure-side cam portions 114 are convex portions that form the pressure-side assist cam surface 114a and the pressure-side slipper cam surface 114b, and are formed so as to extend along the circumferential direction of the pressure clutch 113. In this case, the three pressure-side cam portions 114 are uniformly formed along the circumferential direction of the pressure clutch 113.
- a pressure side assist cam surface 114a and a pressure side slipper cam surface 114b are formed at both ends of the pressure clutch 113 in each pressure side cam portion 114 in the circumferential direction.
- Each pressure side assist cam surface 114a is a portion that slides on the center side assist cam surface 106a of the center clutch 105, and is an inclined surface that gradually projects toward the center clutch 105 side along the circumferential direction of the pressure clutch 113. It is composed of. That is, the assist mechanism is composed of the center side assist cam surface 106a and the pressure side assist cam surface 114a. Then, the clutch spring 116c having a low capacitance (elastic modulus) can be used by the assist force generated by this assist mechanism.
- Each pressure-side slipper cam surface 114b is a portion that slides on the center-side slipper cam surface 106b, and extends in the same direction as the pressure-side assist cam surface 114a on the opposite side of the pressure-side assist cam surface 114a in the circumferential direction.
- Each is composed of inclined surfaces. That is, the slipper mechanism is composed of the center side slipper cam surface 106b and the pressure side slipper cam surface 114b.
- the three tubular columns 115 are cylindrical portions extending in a columnar direction in the axial direction of the center clutch 105 to support the lifter plate 116a, and female threads into which mounting bolts 116b are screw-fitted are provided on the inner peripheral portions thereof. It is formed. These three tubular columns 115 are uniformly formed along the circumferential direction of the pressure clutch 113.
- the lifter plate 116a is a component for sandwiching the clutch spring 116c with the intermediate portion 105b of the center clutch 105, and is made of a metal plate-like body.
- a release pin 116d is provided at the center of the lifter plate 116a via a bearing.
- the clutch spring 116c is an elastic body for pressing the plate holding portion 113b of the pressure clutch 113 against the friction plate 103 by pressing the pressure clutch 113 toward the center clutch 105, and is a coil spring in which spring steel is spirally wound. It is composed of.
- the clutch spring 116c is arranged between each of the three tubular columns 115.
- the release pin 116d is a rod-shaped component for pressing the lifter plate 116a when the transmission state of the rotational driving force of the clutch device 100 is set to the disconnected state, and one end (on the right side in the drawing) is a clutch release mechanism (not shown). It is connected.
- the clutch release mechanism is a mechanical device that presses the release pin 116d toward the shaft 112 by operating a clutch operating lever (not shown) of a driver of a self-propelled vehicle on which the clutch device 100 is mounted.
- the plate holding portion 113b is a portion that holds the other part of the plurality of clutch plates 104, and is formed in a cylindrical shape and the end portion of the cylindrical portion is projected in a flange shape. Has been done.
- a pressure-side fitting portion 117 is formed on the outer peripheral surface of the cylindrical portion of the plate holding portion 113b.
- the pressure-side fitting portion 117 is a portion that holds the clutch plate 104 in a state where it can be displaced along the axial direction of the pressure clutch 113 with the friction plate 103 sandwiched therein and can rotate integrally with the pressure clutch 113. It is composed of external gear-shaped splines.
- the spline constituting the pressure-side fitting portion 117 is formed with the same tooth tip circle, tooth bottom circle and tooth thickness as the spline constituting the center-side fitting portion 108, and the center-side fitting portion 108 is formed. It is formed with a tooth width shorter than the spline teeth that make up.
- the pressure clutch 113 is provided at a position where the splines forming the pressure-side fitting portion 117 are out of phase with the splines forming the center-side fitting portion.
- the pressure side end surface 117a facing the center side fitting portion 108 is formed flat without unevenness, and pressure is applied to a part of the spline constituting the pressure side fitting portion 117.
- a side protruding tooth 120 and a pressure side relief portion 121 are formed, respectively.
- the pressure-side protruding tooth 120 is a portion for preventing the clutch plate 104 and / or the friction plate 103 from falling off, and one of the spline teeth constituting the pressure-side fitting portion 117 is a center clutch. It is formed so as to extend to a length reaching above the center side relief portion 111 of the center side fitting portion 108 in 105.
- the pressure-side protruding teeth 120 are formed at positions adjacent to the three pressure-side cam portions 114 on the radial outer side of the pressure clutch 113, respectively. That is, three pressure-side protruding teeth 120 are provided evenly arranged along the circumferential direction of the pressure clutch 113.
- Each of these pressure-side protruding teeth 120 has a center clutch 105 and a pressure clutch 113 when the tip portion 120a is most separated from the tip portion 110a of the center-side protruding tooth 110 and the pressure clutch 113 is most separated from the center clutch 105.
- the length is formed so as to be separated in the circumferential direction by a width less than the thickness of the clutch plate 104 in the axial direction.
- each pressure-side protruding tooth 120 is formed so that the portion protruding from the pressure-side fitting portion 117 is slightly thinner from the plate holding portion 113b side toward the tip portion 120a.
- the pressure side relief portion 121 is a portion for preventing physical interference of the center side protruding tooth 110, and one of the spline teeth constituting the pressure side fitting portion 117 is omitted and is formed of a curved surface. More specifically, in the pressure-side relief portion 121, one spline tooth on the pressure-side fitting portion 117 on which the center-side protruding tooth 110 is located is omitted, and in the circumferential direction with respect to the omitted spline tooth. It is composed of two tooth bases adjacent to each other on both sides of the tooth and a flat arc surface without unevenness directly connected flush with each other. Therefore, the pressure side relief portions 121 are formed in an even arrangement along the circumferential direction of the pressure clutch 113 corresponding to the three center side protruding teeth 110.
- the clutch device 100 is filled with a predetermined amount of clutch oil (not shown).
- the clutch oil is mainly supplied between the friction plate 103 and the clutch plate 104 to absorb frictional heat generated between them and prevent wear of the friction material. That is, the clutch device 100 is a so-called wet multi-plate friction clutch device.
- the clutch device 100 has a clutch release mechanism (not shown) when the driver of the vehicle (not shown) does not operate the clutch operating lever (not shown). Does not press the release pin 116d, so that the pressure clutch 113 presses the friction plate 103 by the elastic force of the clutch spring 116c. As a result, the center clutch 105 is rotationally driven in a state in which the friction plate 103 and the clutch plate 104 are pressed against each other and frictionally connected. That is, the rotational driving force of the prime mover is transmitted to the center clutch 105 to rotationally drive the shaft 112. In this case, the pressure clutch 113 is pressed against the center clutch 105 by the assist mechanism with a strong force.
- the center-side protruding teeth 110 formed on the plate holding portion 105c of the center clutch 105 are pressure formed on the pressure-side fitting portion 117 of the pressure clutch 113, as shown in FIG. It is located on the side relief portion 121 and overlaps with each other. Further, the pressure-side protruding teeth 120 formed on the plate holding portion 113b of the pressure clutch 113 are located on the center-side relief portion 111 formed on the center-side fitting portion 108 of the center clutch 105 and overlap each other.
- the friction plate 103 and / or the clutch plate 104 existing at the boundary between the center-side fitting portion 108 and the pressure-side fitting portion 117 is formed by the center-side protruding teeth 110 and the pressure-side protruding teeth 120 to form the plate holding portion 105c. , 113b will not drop out.
- the rotation speed of the shaft 112 is the rotation speed of the input gear 102.
- Back torque may act on the clutch device 100 in excess of the number.
- the pressure clutch 113 acts on the center clutch 105 with the pressure side slipper cam surface 114b formed on the pressure clutch 113 riding on the center side slipper cam surface 106b formed on the center clutch 105.
- a slipper function that shifts in the direction of separation while rotating relative to each other and the pressing force suddenly weakens works.
- the center-side protruding tooth 110 When this slipper function is activated, the center-side protruding tooth 110 is rotationally displaced relative to the pressure clutch 113, but the pressure-side relief portion 121 is adjacent to the pressure-side fitting portion 117 of the pressure clutch 113. Since it is formed so as to be integrally connected to the tooth bottom flush with each other, it does not physically interfere with the spline teeth constituting the pressure side fitting portion 117. Further, as for the pressure side protruding tooth 120, similarly to the center side protruding tooth 110, the center side relief portion 111 is formed by being integrally connected to the adjacent tooth bottom on the center side fitting portion 108 of the center clutch 105. Therefore, there is no physical interference such as collision with the spline teeth constituting the center-side fitting portion 108.
- the clutch release mechanism presses the release pin 116d.
- the pressure clutch 113 is displaced in the direction away from the center clutch 105 against the elastic force of the clutch spring 116c.
- the center clutch 105 is in a state in which the frictional connection between the friction plate 103 and the clutch plate 104 is released, so that the rotational drive is attenuated or the rotational drive is stopped. That is, the rotational driving force of the prime mover is cut off with respect to the center clutch 105.
- the center-side protruding teeth 110 formed on the plate holding portion 105c of the center clutch 105 are pressure formed on the pressure-side fitting portion 117 of the pressure clutch 113. It is located at a separated position that does not overlap on the side relief portion 121 and on a separated gap between the center side end surface 108a of the center side fitting portion 108 and the pressure side end surface 117a of the pressure side fitting portion 117. Therefore, the friction plate 103 and / or the clutch plate 104 that existed at the boundary between the center-side fitting portion 108 and the pressure-side fitting portion 117 fall off from the plate holding portions 105c and 113b by the center-side protruding teeth 110. There is nothing to do.
- the pressure-side protruding teeth 120 formed on the plate holding portion 113b of the pressure clutch 113 are separated from each other and do not overlap the center-side relief portion 111 formed on the center-side fitting portion 108 of the center clutch 105 and under pressure. It is located on a separated gap between the pressure side end surface 117a of the side fitting portion 117 and the center side end surface 108a of the center side fitting portion 108. Therefore, the friction plate 103 and / or the clutch plate 104 that existed at the boundary between the pressure-side fitting portion 117 and the center-side fitting portion 108 fall off from the plate holding portions 105c and 113b by the pressure-side protruding teeth 120. There is nothing to do.
- the center-side protruding tooth 110 and the pressure-side protruding tooth 120 are located at different positions on the circumferential direction as shown in FIG. 8, but the tip portion 110a of the center-side protruding tooth 110 is located in the circumferential direction.
- the gap S between the locus of the tooth and the locus of the tip portion 120a of the pressure-side protruding tooth 120 in the circumferential direction is formed with a width less than the thickness of the clutch plate 104.
- the clutch device 100 prevents the clutch plate 104 fitted to the center-side protruding tooth 110 and the pressure-side protruding tooth 120 from falling off, and in the axial direction on the center-side protruding tooth 110 and the pressure-side protruding tooth 120, respectively. Since the displaceable range to the tooth can be maximized, the flowability of the clutch oil can be improved and the drag torque can be reduced.
- FIG. 6 shows a state in which the friction plate 103 and the clutch plate 104 are biased toward the center clutch 105 by the maximum number of sheets in the clutch OFF state.
- FIG. 7 shows a state in which the friction plate 103 and the clutch plate 104 are biased toward the pressure clutch 113 side by the maximum number of sheets in the clutch OFF state. That is, the clutch device 100 according to the present invention falls off from the plate holding portions 105c and 113b even when the friction plate 103 and the clutch plate 104 are biased toward the center clutch 105 side or the pressure clutch 113 side when the clutch is disengaged. There is no such thing.
- FIGS. 5 and 8 are schematic views for clarifying the positional relationship between the center-side protruding tooth 110 and the pressure-side protruding tooth 120, and is a diagram of the friction plate 103 arranged between the two clutch plates 104. Is omitted.
- the center-side protruding teeth 110 physically interfere with the pressure-side fitting portion 117.
- the friction plate 103 and / or the clutch plate 104 that existed at the boundary between the center-side fitting portion 108 and the pressure-side fitting portion 117 is provided by the center-side protruding teeth 110 and the pressure-side protruding teeth 120. It does not fall off from the plate holding portions 105c and 113b.
- the center side end surface 108a and the pressure side end surface 117a which are the end faces of the center clutch 105 and the pressure clutch 113 facing each other, are uneven.
- the friction plate 103 and / or the clutch plate is formed so that only the pressure side protruding tooth 120 and the center side protruding tooth 110 are formed so as to project to the center side relief portion 111 side and the pressure side relief portion 121 side, respectively. It is possible to improve the flowability by suppressing the flow of the clutch oil while preventing the 104 from falling off.
- the implementation of the present invention is not limited to the above embodiment, and various changes can be made as long as the object of the present invention is not deviated.
- the same components as those of the clutch device 100 in the above embodiment are designated by the same reference numerals to the reference numerals given to the clutch device 100, and the description thereof will be omitted.
- the spline forming the pressure side fitting portion 117 is formed with the same tooth tip circle, tooth bottom circle and tooth thickness as the spline forming the center side fitting portion 108, and is also centered. It is formed with a tooth width shorter than that of the spline teeth constituting the side fitting portion 108.
- the splines forming the center-side fitting portion 108 and the splines forming the pressure-side fitting portion 117 may be formed by at least the same tooth tip circles and arranged to face each other.
- the plurality of clutch plates 104 can all have the same size and shape.
- the spline forming the pressure-side fitting portion 117 can be formed, for example, with a tooth bottom circle smaller than the spline forming the center-side fitting portion 108 or a longer tooth thickness.
- center-side protruding teeth 110 and three pressure-side protruding teeth 120 are provided evenly arranged along each circumferential direction of the center-side fitting portion 108 and the pressure-side fitting portion 117.
- at least one center-side protruding tooth 110 and one pressure-side protruding tooth 120 are provided in the center-side fitting portion 108 and the pressure-side fitting portion 117, and two, three, or four or more are provided. It may have been.
- the center-side protruding teeth 110 and the pressure-side protruding teeth 120 do not necessarily have to be provided alternately, and need not be provided at equal intervals along the circumferential direction.
- the center-side protruding tooth 110 and the pressure-side protruding tooth 120 have a circumferential locus of the tip portion 110a of the center-side protruding tooth 110 and a circumferential locus of the tip portion 120a of the pressure-side protruding tooth 120.
- the gap S between the clutch plate 104 and the clutch plate 104 is formed to have a width less than the thickness of the clutch plate 104.
- the center-side protruding tooth 110 and the pressure-side protruding tooth 120 are formed to have a length such that the gap between the tip 110a and the tip 120a of each other is less than the thickness of the clutch plate 104 when the clutch is disengaged. Just do it.
- the center-side protruding tooth 110 and the pressure-side protruding tooth 120 are on the center clutch 105 and the pressure clutch 113 in the circumferential direction when the pressure clutch 113 is most separated from the center clutch 105, for example. It can be formed to a length in which lap portions R overlapping each other in the axial direction are formed. According to this, the clutch device 100 can always maintain a state in which the friction plate 103 and / or the clutch plate 104 is completely fitted to the center side protruding tooth 110 and the pressure side protruding tooth 120, so that friction The plate 103 and / or the clutch plate 104 can be stably held.
- the center-side protruding teeth 110 and the pressure-side protruding teeth 120 are on the circumferential direction of the center clutch 105 and the pressure clutch 113 when the pressure clutch 113 is most separated from the center clutch 105, for example.
- the tip portion 110a and the tip portion 120a can be formed so as to be flush with each other in the axial direction. According to this, the clutch device 100 can always maintain a state in which the friction plate 103 and / or the clutch plate 104 is completely fitted to the center side protruding tooth 110 and the pressure side protruding tooth 120, and the center side. Since the axially displaceable range on the protruding tooth 110 and the pressure side protruding tooth 120 can be maximized, the flowability of the clutch oil can be improved and the drag torque can be reduced.
- 9 and 10 are schematic views for clarifying the positional relationship between the center-side protruding tooth 110 and the pressure-side protruding tooth 120, and is a diagram of a friction plate 103 arranged between the two clutch plates 104. Is omitted.
- the center side protruding tooth 110 and the pressure side protruding tooth 120 are formed so that the tooth thickness becomes thinner toward the tip portions 110a and 120a, respectively.
- the clutch device 100 can further improve the flowability of the clutch oil when the clutch is turned off as a matter of course.
- the center-side protruding tooth 110 and the pressure-side protruding tooth 120 can be formed in place of or in addition to the tooth thickness so that the total tooth depth becomes lower toward the tip portions 110a and 120a, respectively. That is, the center-side protruding tooth 110 and the pressure-side protruding tooth 120 can be formed so that their outer shapes become thinner toward the tip portions 110a and 120a, respectively.
- the center-side protruding tooth 110 and the pressure-side protruding tooth 120 may be formed with outer shapes having the same thickness in the tooth width direction, respectively.
- the center side relief portion 111 and the pressure side relief portion 121 are configured to be flush with the tooth bottom adjacent to each other in the circumferential direction.
- the center side relief portion 111 and the pressure side relief portion 121 may be formed so as not to physically interfere with the pressure side protruding tooth 120 and the center side protruding tooth 110 such as colliding with or abutting against each other, the circumference It suffices if it is formed at the same height or less as the tooth bottom adjacent to the direction (in other words, flush with or less than the virtual extension surface of the tooth bottom).
- the center side relief portion 111 and the pressure side relief portion 121 are formed over the entire area in the tooth width direction of the spline teeth constituting the center side fitting portion 108 and the pressure side fitting portion 117. ..
- the center side relief portion 111 and the pressure side relief portion 121 need only be formed so as not to physically interfere with the pressure side protrusion teeth 120 and the center side protrusion teeth 110, the center side relief portion 111 and the pressure side relief portion 111 and the pressure side It may be configured so that the spline teeth forming the fitting portion 117 are formed only in a part in the tooth width direction and the spline teeth are formed in the other part.
- the clutch device 100 is configured to include an assist mechanism and a slipper mechanism.
- the clutch device 100 may be configured not to include at least one of an assist mechanism and a slipper mechanism.
- the pressure clutch 113 is configured to press the friction plate 103.
- the pressure clutch 113 may be configured to press the friction plate 103 or the clutch plate 104 so that the friction plate 103 and the clutch plate 104 are in close contact with each other. That is, the pressure clutch 113 may be configured to press the clutch plate 104.
- the position of the friction plate 103 and the clutch plate 104 in the above embodiment may be exchanged so that the pressure clutch 113 presses the clutch plate 104.
- Plate holding part 106 ... Center side cam part, 106a ... Center side assist cam surface, 106b ... Center side slipper cam surface, 107 ... Support through hole, 108 ... Center side fitting part, 108a ... Center side end face, 110 ... Center side protruding tooth, 110a ... Tip part, 111 ... Center side relief part, 112 ... Shaft, 112a ... Nut, 113 ... Pressure clutch, 113a ... Inner disk part, 113b ... Plate holding part, 114 ... Pressure side cam part , 114a ... Pressure side assist cam surface, 114b ... Pressure side slipper cam surface, 115 ... Cylindrical column, 116a ... Lifter plate, 116b ...
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
クラッチ装置100は、クラッチハウジング101を備えている。クラッチハウジング101は、フリクションプレート103を保持するとともにこのフリクションプレート103にエンジンからの駆動力を伝達するための部品であり、アルミニウム合金材を有底円筒状に成形して構成されている。より具体的には、クラッチハウジング101の筒状部には、内歯歯車状のスプラインが形成されており、このスプラインに複数枚(本実施形態においては5枚)のフリクションプレート103がクラッチハウジング101の軸線方向に沿って変位可能、かつ同クラッチハウジング101と一体回転可能な状態でスプライン嵌合して保持されている。
次に、上記のように構成したクラッチ装置100の作動について説明する。このクラッチ装置100は、前記したように、車両におけるエンジンと変速機との間に配置されるものであり、車両の運転者によるクラッチ操作レバーの操作によってエンジンの駆動力の変速機への伝達および遮断を行なう。
100…クラッチ装置、101…クラッチハウジング、101a…リベット、102…入力ギア、102a…軸受、103…フリクションプレート、104…クラッチプレート、105…センタークラッチ、105a…接続部、105b…中間部、105c…プレート保持部、106…センター側カム部、106a…センター側アシストカム面、106b…センター側スリッパカム面、107…支柱貫通孔、108…センター側嵌合部、108a…センター側端面、
110…センター側突出歯、110a…先端部、111…センター側逃げ部、112…シャフト、112a…ナット、113…プレッシャークラッチ、113a…内側円盤部、113b…プレート保持部、114…プレッシャー側カム部、114a…プレッシャー側アシストカム面、114b…プレッシャー側スリッパカム面、115…筒状支柱、116a…リフタープレート、116b…取付ボルト、116c…クラッチスプリング、116d…レリーズピン、117…プレッシャー側嵌合部、117a…プレッシャー側端面、
120…プレッシャー側突出歯、120a…先端部、121…プレッシャー側逃げ部。
Claims (6)
- 原動軸の回転駆動力を従動軸に伝達および遮断するクラッチ装置において、
前記原動軸の回転駆動によって回転駆動する複数のフリクションプレートにそれぞれ対向配置される環状の平板で構成されるとともに同平板の内周部に内歯を有した複数のクラッチプレートと、
前記クラッチプレートの前記内歯に嵌合する外歯を有して前記従動軸に連結されるセンタークラッチと、
前記クラッチプレートの前記内歯に嵌合する外歯を有して前記センタークラッチに対して接近および離隔する方向にそれぞれ変位可能に隣接配置されて前記フリクションプレートまたは前記クラッチプレートを押圧するプレッシャークラッチとを備え、
前記センタークラッチおよび前記プレッシャークラッチは、
互いに対向し合う各端面が凹凸なく平らに形成されるとともに各前記外歯が互いに同じ歯先円に形成されており、かつ
前記センタークラッチおよび前記プレッシャークラッチにおける各前記外歯における歯を部分的に省略したセンター側逃げ部およびプレッシャー側逃げ部と、
各前記外歯のうちの少なくとも1つの歯が前記センター側逃げ部および前記プレッシャー側逃げ部にそれぞれ張り出して延びるプレッシャー側突出歯およびセンター側突出歯とをそれぞれ備えることを特徴とするクラッチ装置。 - 請求項1に記載したクラッチ装置において、
前記プレッシャー側突出歯および前記センター側突出歯は、
前記センタークラッチに対して前記プレッシャークラッチが最も離隔した際に前記センタークラッチおよび前記プレッシャークラッチの周方向で軸方向に互いに重なる長さに形成されていることを特徴とするクラッチ装置。 - 請求項1に記載したクラッチ装置において、
前記プレッシャー側突出歯および前記センター側突出歯は、
前記センタークラッチに対して前記プレッシャークラッチが最も離隔した際に前記センタークラッチおよび前記プレッシャークラッチの周方向で軸方向に互いの先端部が面一になる長さに形成されていることを特徴とするクラッチ装置。 - 請求項1に記載したクラッチ装置において、
前記プレッシャー側突出歯および前記センター側突出歯は、
前記センタークラッチに対して前記プレッシャークラッチが最も離隔した際に前記センタークラッチおよび前記プレッシャークラッチの周方向上で軸方向に前記クラッチプレートの厚さ未満の幅で互いの先端部が離隔する長さに形成されていることを特徴とするクラッチ装置。 - 請求項1ないし請求項4のうちのいずれか1つに記載したクラッチ装置において、
前記プレッシャー側突出歯および前記センター側突出歯は、
それぞれ先端部に向かって外形が細くなるように形成されていることを特徴とするクラッチ装置。 - 請求項1ないし請求項5のうちのいずれか1つに記載したクラッチ装置において、
前記プレッシャー側突出歯および前記センター側突出歯は、
前記センタークラッチおよび前記プレッシャークラッチの周方向に沿って交互に形成されていることを特徴とするクラッチ装置。
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JP2018204655A (ja) * | 2017-06-01 | 2018-12-27 | 株式会社エフ・シー・シー | クラッチ装置 |
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JP2010236653A (ja) * | 2009-03-31 | 2010-10-21 | Honda Motor Co Ltd | 多板クラッチ |
JP2018204655A (ja) * | 2017-06-01 | 2018-12-27 | 株式会社エフ・シー・シー | クラッチ装置 |
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