Friction clutch

文档序号：1760118 发布日期：2019-11-29 浏览：31次中文

阅读说明：本技术 摩擦离合器 (Friction clutch ) 是由高田高志斋藤大于 2018-04-18 设计创作，主要内容包括：一种摩擦离合器(1),配备有输入构件(2)、摩擦离合器机构(7)、第一转子(21)、反扭矩限制器机构(25)和第二转子(23)。摩擦离合器机构(7)包括多个摩擦盘(8、11)和按压所述摩擦盘(8、11)的压板(12)。反扭矩限制器机构(25)具有位于第一转子(21)侧的凸轮槽(44)、第二转子(23)侧的凸轮槽(45)以及凸轮槽(44、45)之间的滚珠(41)。凸轮槽(44、45)具有半球状的装配部(47、51)和倾斜凸轮部(48、52)。由于滚珠(41)从装配部(47、51)向倾斜凸轮部(48、52)运动,第一转子(21)的端部(61)在与摩擦盘(8、11)相反的方向上按压压板(12)。(A kind of friction clutch (1), equipped with input link (2), friction clutch mechanism (7), the first rotor (21), reaction torque limiters mechanisms (25) and the second rotor (23).Friction clutch mechanism (7) includes the pressing plate (12) of multiple frictional disks (8,11) and the pressing frictional disk (8,11).Reaction torque limiters mechanisms (25) have the ball (41) between the cam path (44) of the first rotor (21) side, the cam path (45) and cam path (44,45) of the second rotor (23) side.Cam path (44,45) has hemispherical department of assembly (47,51) and tilting cam portion (48,52).Since ball (41) from department of assembly (47,51) to tilting cam portion (48,52) move, the end (61) of the first rotor (21) presses up pressing plate (12) in the side opposite with frictional disk (8,11).)

1. a kind of friction clutch characterized by comprising

Input link, the input link receive power from power source and rotate；

The first rotor, the first rotor are configured in the clutch operative orientation for being parallel to the rotation axis of the input link Upper movement；

Friction clutch mechanism, the friction clutch mechanism is between the input link and the first rotor；

Second rotor, second rotor rotate together with output link；And

Reaction torque limiters mechanisms, the reaction torque limiters mechanisms between the first rotor and second rotor,

The friction clutch mechanism includes:

Friction member, the friction member include the first frictional disk and the second frictional disk, first frictional disk and described second Frictional disk is separately positioned on the input link and the first rotor, and first frictional disk and second friction Disk is moved on the clutch operative orientation to be in contact with each other and away from each other；

First pressing plate, first pressing plate are pressed up in first frictional disk and second frictional disk side closer to each other The friction member；And

Second pressing plate, second pressing plate clamp the friction member together with first pressing plate,

The reaction torque limiters mechanisms include:

Driving side cam path, the driving side cam path be formed in the first rotor towards the bitrochanteric surface In；

Slave end cam path, the slave end cam path are formed in the bitrochanteric surface towards the first rotor In；

Ball, the ball are assemblied in the driving side cam path and the slave end cam path rolling can roll Pearl is between the first rotor and second rotor；And

Spring, the spring by the first rotor towards the second rotor bias,

Each of the driving side cam path and the slave end cam path include:

Department of assembly, the department of assembly includes the shape with the form fit of a part of the ball, and prevents described second The rotatable phase of rotor postpones relative to the rotatable phase of the first rotor；And

Tilting cam portion, when the bitrochanteric rotatable phase shifts to an earlier date relative to the rotatable phase of the first rotor, institute Stating tilting cam portion rolls the ball and moves the first rotor along far from the bitrochanteric direction, and

The first rotor includes press section, when the first rotor is moved with the rolling of the ball, the pressing Portion presses up first pressing plate in the side of first frictional disk and second frictional disk away from each other.

2. friction clutch according to claim 1, which is characterized in that department of assembly's cloth of the driving side cam path The rear side on the direction of rotation of the first rotor in the driving side cam path is set,

The tilting cam portion of the driving side cam path include be formed in the driving side cam path at described first turn The inclined-plane of front side on the direction of rotation of son,

The department of assembly of the slave end cam path be arranged in the slave end cam path in the bitrochanteric rotation Front side on direction, and

The tilting cam portion of the slave end cam path include be formed in the slave end cam path at described second turn The inclined-plane of rear side on the direction of rotation of son.

3. friction clutch according to claim 1, which is characterized in that second pressing plate is arranged in second rotor On.

4. friction clutch according to claim 1, which is characterized in that the driving side cam path includes a plurality of types of The inclination angle of cam path, the tilting cam portion of the cam path is different, and

The slave end cam path includes a plurality of types of cam paths, and the inclination angle in the tilting cam portion of the cam path is not Together.

5. friction clutch described in any one of -4 according to claim 1, which is characterized in that the spring includes:

Base portion, the base portion are formed as annular, and the axis of the base portion and the output link is located on same axis, and institute Base portion is stated to be supported in the state that the position on the clutch operative orientation can change by the output link；And

Press section, the press section are extended radially outward from the base portion, and the press section is in the clutch operative orientation Upper inclination, and the press section is contacted with the first rotor.

Technical field

The present invention relates to a kind of reaction torques with the excessive torque prevented from outlet side to input side (reaction torque) transmitting The friction clutch of limiters mechanisms.

Background technique

In motor cycle rider's, it is sometimes desirable to which downshift operation is to slow down.The revolving speed of clutch shaft passes through shift front gear box Gear ratio and shift after gear ratio difference and increase.If connecting clutch at this time, engine speed is with clutch It is that the revolving speed of axis increases and increase.The torque for increasing the clutch shaft of engine speed is referred to as reaction torque.

Engine braking (device) tends to be powerful under high engine speed.If clutch is not by after downshift operation Careful connection, then apply engine braking, the phenomenon that being referred to as skidding or bounce is generated between driving wheel and road surface, and rub Motorcycle vehicle body position become disturbance and it is unstable.If slowly connecting clutch, engine speed using half-clutch device Unexpected increase can be alleviated, and engine braking can be manually controlled.But the case where needing acutely operation Under, such as in racing car etc., half-clutch operation is difficult, and brings burden to driver.In order to solve this problem, exist A kind of friction clutch, which, which has, cuts off at predetermined value or interrupts the reaction torque and the mitigation that are transmitted to engine The mechanism of the application of engine braking, i.e. reaction torque limiter.

Such friction clutch is disclosed in such as patent document 1.Friction clutch disclosed in Patent Document 1 Device is the multi-disc type friction clutch in the power transfer path being arranged between the engine of motorcycle and speed changer.The friction Clutch includes reaction torque limiters mechanisms, is oppositely transmitted to crankshaft side from transmission side to avoid excessive reaction torque.

The reaction torque limiters mechanisms are arranged on outlet side rotor, and power is passed via multiple frictional disks of friction clutch It is delivered to the outlet side rotor.Outlet side rotor includes the first rotor engaged with multiple frictional disks and via reaction torque limiter machine Structure transfers power to its second rotor from the first rotor.Second rotor is connected to revolve together with the input shaft of speed changer Turn.

The reaction torque limiters mechanisms include the first ring rotated together with the first rotor and together with the second rotor Second ring of rotation.First ring is removably attached to keep in the annular groove of the first rotor and by the first rotor.First ring packet The multiple torques for including multiple fixed projections for the first ring to be fixed to the first rotor and engaging with the second ring transmit protrusion. Each fixed projection is assemblied in the fixed groove for the bottom of annular groove for being formed in the first rotor.

Second ring is removably attached in bitrochanteric annular groove and is kept by the second rotor.Second ring includes being used for Second ring is fixed to bitrochanteric multiple fixed projections and the multiple torques engaged with the first ring transmit protrusion.It is each solid Determine protrusion to be assemblied in the fixed groove for being formed in the bottom of bitrochanteric annular groove.

The each torque transmitting protrusion being arranged on the first ring and the second ring has for positive (or forward) torque transmitting Engagement surface and the cam face for being used for instead (or backward) torque transmitting.When transmitting power to the second rotor from the first rotor, Positive-torque transmits engagement surface and contacts with the positive-torque of another ring transmitting engagement surface.

When transmitting torque to the first rotor from the second rotor, reaction torque transmits cam face and the reaction torque of another ring passes Cam face contact is passed, torque transmitting protrusion slides over each other, and the first rotor is axially movable.First in friction clutch This movement of rotor reduces pressing plate and compresses the pressure of multiple frictional disks, and reduces reaction torque.

But in friction clutch disclosed in patent document 1, the reaction torque of the first ring and the second ring transmits CAM table Face is face contact, therefore is difficult to slide in contact portion.The bad sliding of surface contact increases reaction torque limiters mechanisms Working resistance, and improve regulated value when reaction torque is cut off.Engine braking tends to be powerful in top adjustment value, and Driver needs nervously to execute half-clutch operation.

Summary of the invention

The problem to be solved in the present invention

The present invention is to propose to solve the above-mentioned problems, and its purpose is to provide a kind of friction clutch, the frictions Clutch can cut off the reaction torque of smaller value by reducing the working resistance of reaction torque limiters mechanisms.

Solution to the problem

In order to achieve the above object, according to the present invention, a kind of friction clutch is provided, which includes: defeated Enter component, receives the power from power source and rotation；The first rotor is configured in the rotary shaft for being parallel to input link It is moved on the clutch operative orientation of line, friction clutch mechanism, between input link and the first rotor；Second turn Son, rotates and reaction torque limiters mechanisms together with output link, between the first rotor and second rotor Between, the friction clutch mechanism includes: friction member, and the friction member includes the first frictional disk and the second frictional disk, First frictional disk and the second frictional disk are separately positioned on the input link and the first rotor, and in clutch work Make direction movement to be in contact with each other and away from each other；First pressing plate, in the first frictional disk and the second frictional disk side close to each other Friction member and the second pressing plate are pressed up, the clamping friction component together with the first pressing plate, reaction torque limiters mechanisms packet Include: driving side cam path, be formed in the first rotor towards in bitrochanteric surface；Slave end cam path, is formed in second In the surface towards the first rotor of rotor；Ball is assemblied in driving side cam path and slave end cam path can roll, And between the first rotor and the second rotor；And spring, by the first rotor the second rotor bias of direction, the driving Each of side cam path and the slave end cam path include: department of assembly, and the department of assembly includes one with the ball The shape of partial form fit, and prevent rotation phase of the bitrochanteric rotatable phase relative to the first rotor The delay of position；And tilting cam portion, when bitrochanteric rotatable phase shifts to an earlier date than the rotatable phase of the first rotor, the inclination Cam part rolls ball and moves the first rotor along far from bitrochanteric direction；And the first rotor includes press section, When the first rotor is moved with the rolling of ball, side of the press section in the first frictional disk and the second frictional disk away from each other Press up the first pressing plate.

Invention effect

When reaction torque is passed to friction clutch according to the present invention, bitrochanteric rotatable phase compares the first rotor Rotatable phase shift to an earlier date.In this case, the ball of reaction torque limiters mechanisms is from driving side cam path and slave end cam The department of assembly of both slots moves to tilting cam portion, and rolls move corresponding with the amplitude of reaction torque along tilting cam portion Amount.When ball is moved along tilting cam portion, the first rotor is moved along far from bitrochanteric direction, thus when first turn When the press section of son presses the first pressing plate, reduce the torque transmitted in friction clutch mechanism.As a result, friction clutch mechanism It slides to cut off the reaction torque for the upstream side for being transmitted to power transfer path from friction clutch.

Since reaction torque limiters mechanisms use ball cam work mechanism, so working resistance is small.Therefore, of the invention It is capable of providing such a friction clutch, the half-clutch state of clutch slip can be maintained for a long time, because can cut The reaction torque of disconnected smaller value.

Detailed description of the invention

Fig. 1 is the longitudinal sectional view of the friction clutch of embodiment according to the present invention；

Fig. 2 is the front view of sliding panel；

Fig. 3 is the cross-sectional view along the line III-III interception in Fig. 2；

Fig. 4 is the rearview of central plate；

Fig. 5 is the cross-sectional view along the line V-V interception in Fig. 4；

Fig. 6 is the exploded perspective view of the first rotor；

Fig. 7 is bitrochanteric exploded perspective view；

Fig. 8 is the schematic diagram for illustrating dynamic torque transmission path；And

Fig. 9 is the schematic diagram for illustrating reaction torque transmission path.

Specific embodiment

The embodiment of friction clutch according to the present invention is described in detail below with reference to Fig. 1 to Fig. 9.

Friction clutch 1 shown in Fig. 1 can be set such as engine of motorcycle (not shown) and speed changer it Between power transfer path on.The input link 2 of outermost locations in Fig. 1 receives the power from power supply (not shown) simultaneously Rotation.Although input link 2 shown in Fig. 1 is shown as a component for ease of understanding structure, it includes and electricity The input gear 3 and be connected to input via torque damping device (not shown) that the driving gear (not shown) on side engages in a steady stream The cylinder-shaped clutch housing 4 of gear 3.

Input link 2 is pivotably supported by being located at the output shaft 5 of axial component by bearing 6.Output shaft 5 from friction from Clutch 1 receives power and rotates.When friction clutch 1 is mounted in motorcycle, output shaft 5 by speed changer input shaft shape At.Output shaft 5 is equivalent to " output link " in the present invention.

The holding of clutch housing 4 includes multiple first frictional disks 8 in friction clutch mechanism 7.Each first friction Disk 8 is formed as ring discoid, and corresponding to clutch housing 4 in the protrusion 8a for the peripheral part that the first frictional disk 8 is arranged in The groove of the notch 9 is contained in clutch housing 4 in the state of engaging.The groove of the notch 9 is in the rotation axis for being parallel to clutch housing 4 The side of C upwardly extends, and the inside and outside of clutch housing 4 is made to communicate with each other.The protrusion 8a and clutch of first frictional disk 8 The setting of the groove of the notch 9 of shell 4 is in the divided multiple positions in the circumferential of clutch housing 4.

First frictional disk 8 its can relative to clutch housing 4 the groove of the notch 9 length direction (with clutch housing 4 The parallel direction rotation axis C) on move freely in the state of rotated together with clutch housing 4.For convenience's sake, The free-moving direction of one frictional disk 8 will be called " clutch operative orientation " for short.Clutch housing 4 is in clutch operative orientation The upper side opposite with input gear 3 will be referred to as " side on clutch operative orientation ", and (right side and first in Fig. 1 are rubbed Wipe the direction that disk 8 moves away input gear 3).Opposite side will be referred to as " other side on clutch operative orientation " (figure Left side and the first frictional disk 8 in 1 is close to the direction of input gear 3).

Friction clutch mechanism 7 is between input link 2 and the first rotor 21.Friction clutch mechanism 7 includes above-mentioned The first frictional disk 8, multiple second frictional disks 11 for being respectively inserted between two adjacent first frictional disks 8 and from The first pressing plate 12 and the second pressing plate 13 of sandwich the first frictional disk 8 and the second frictional disk 11 on clutch operative orientation.

Each second frictional disk 11 is formed as ring discoid, and is being disposed inward at the inner peripheral portion of the second frictional disk 11 Protrusion 11a is contained in bell housing in the state of engaging to the corresponding spline 15 of the interior hub 14 of (being described later on) the first rotor 21 In body 4.First frictional disk 8 and the second frictional disk 11 moved on clutch operative orientation be in contact with each other and away from each other or point From.First frictional disk 8 and the second frictional disk 11 constitute friction member 10 (see Fig. 8 and Fig. 9).

The first rotor 21 includes above-mentioned interior hub 14 and sliding panel 18.As shown in fig. 6, interior hub 14 includes having above-mentioned spline The cylindrical portion 16 of slot 15 and the convex edge 17 radially inwardly extending from cylindrical portion 16.The protrusion 11a of second frictional disk 11 and The setting of spline 15 of interior hub 14 is in cylindrical portion 16 circumferentially at a predetermined interval at divided multiple positions.With ring discoid Sliding panel 18 be attached to the convex edges 17 of interior hub 14 by multiple installation bolts 19.Each installation bolt 19 is via inward flange The through-hole 17a in portion 17 is threadably secured to the corresponding threaded hole 20 of sliding panel 18.

As shown in Fig. 2, the inner peripheral portion in sliding panel 18 is integrally formed with radially inwardly extending multiple prodgers 22. Space S is formed between adjacent prodger 22 to interfere to avoid with another component.End of the prodger 22 in prominent side It is movably supported by the central boss 24 of the second rotor 23 (see Fig. 1: will describe later)." movably " mean sliding panel 18 can rotate freely through relative to central boss 24 and move freely through on clutch operative orientation.By interior hub 14 and slide The first rotor 21 that movable plate 18 is formed is constructed such that it can be rotated freely through and relative to the second rotor 23 in clutch It is moved freely through on device operative orientation.

The power of the first rotor 21 is transmitted to via reaction torque limiters mechanisms from input link 2 via friction clutch 1 25 (will be described later) are transmitted to the second rotor 23 from the first rotor 21.

In Fig. 1, the first pressing plate 12, which has, presses the first frictional disk 8 from a side to the other side on clutch operative orientation With the function of the second frictional disk 11.That is, the first pressing plate 12 adjacent the first frictional disk 8 and the second frictional disk 11 each other Close side presses up the first frictional disk 8 and the second frictional disk 11.First pressing plate 12 is shaped as disk, and is located in and clutch On the identical axis of device shell 4.First pressing plate 12 is via multiple spring mechanisms 26 in Fig. 1 shown in downside by the second rotor 23 The central plate 27 of (being described later on) supports.

Each spring mechanism 26 includes the cylindrical support component 28 for being threadably fixed to central plate 27.Cylindrical support structure Part 28 extends to the side on clutch operative orientation by the above-mentioned space S of sliding panel 18 from central plate 27, and passes through the The recess portion 12a of one pressing plate 12.Recess portion 12a and the setting of cylindrical support component 28 are circumferentially divided multiple in the first pressing plate 12 At position.Supporting bead 29 is fixed to the distal end of each cylindrical support component 28 by positioning bolt 30.Compress spiral bullet Spring 31 is compressed and is inserted between supporting bead 29 and the bottom of recess portion 12a.Cylindrical support component 28 passes through compression spiral The center of spring 31.First pressing plate 12 is by the spring force of compression helical spring 31 in clutch operative orientation from a side to another Side presses the first frictional disk 8 and the second frictional disk 11.

Release lever 32 is engaged with the axial component of the first pressing plate 12.Release lever 32 is for disconnecting friction clutch 1.Release lever 32 one end is movably mounted in the hollow space of output shaft 5, and the other end is connected to clutch operating mechanism (not shown). When disconnecting friction clutch 1, clutch operating mechanism overcomes the spring force of compression helical spring 31 towards clutch work side To side pull release lever 32.

Second pressing plate 13 receives the pressure of the first pressing plate 12, and is formed as ring discoid, as shown in Figure 7.Second pressing plate 13 Central plate 27 is attached to by multiple installation bolts 33.Each installation bolt 33 passes through the through-hole 13a of the second pressing plate 13.

Central plate 27 cooperates with the second above-mentioned pressing plate 13 constitutes the second rotor 23, and is shaped as disk.Central plate 27 Including the ring discoid center flange 34 for being located at the central boss 24 of axial component and being extended radially outward from central boss 24. Central boss 24 is formed as cylinder-shaped.Multiple splines 35 are formed in the inner peripheral portion of central boss 24, and pass through spline and output Axis 5 connects.

As shown in Figure 1, central boss 24 is inserted into central boss 24 in flange collar 36 and supports the bearing of input link 2 It is installed in the state of between 6 on output shaft 5.The protruding portion of output shaft 5 is from central boss 24 towards clutch operative orientation Side is prominent.The protruding portion is assembled in the stiffening plate 37 for keeping central boss 24, and nut member 38 is threadably fixed to Stiffening plate 37 is fixed to output shaft 5 on the protruding portion.The second rotor 23 including central boss 24 is fixed to output shaft 5, And preventing from rotating together in the state of the movement of clutch operative orientation with output shaft 5 relative to output shaft 5.

Sliding panel 18 is movably mounted on the outer surface of central boss 24.The center flange 34 of central plate 27 is in clutch It is aligned on device operative orientation with sliding panel 18 and faces sliding panel 18.Center flange 34 and sliding panel 18 are connected by ball 41. Ball 41 is included in reaction torque limiters mechanisms 25, and details will be described later.

Center flange 34 has threaded hole 42 and threaded hole 43, and above-mentioned cylindrical support component 28 is threadedly secured at screw thread In hole 42, the installation bolt 33 for being attached the second pressing plate 13 is fixed in threaded hole 43.As shown in figure 4, two kinds of spiral shell Pit 42 and 43 is aligned with being alternatingly configured at center flange 34 circumferentially divided multiple positions.For cylindrical support Ribs 34a that each threaded hole 42 of component 28 penetrates through on centrally disposed flange 34 and formed.

Reaction torque limiters mechanisms 25 are between the first rotor 21 and the second rotor 23.Reaction torque limiters mechanisms 25 by Ball cam work mechanism is constituted.As shown in Figure 1, reaction torque limiters mechanisms 25 include the driving side being formed in sliding panel 18 Cam path 44, is assemblied in driving side cam path 44 and slave end cam at the slave end cam path 45 being formed in center flange 34 Ball 41 in slot 45 and the reaction torque adjustment spring structure that the side of clutch operative orientation is arranged in relative to sliding panel 18 Part 46.

During driving side cam path 44 is formed in the end of the other side in clutch operative orientation of sliding panel 18 and faces On the surface of cardiac prominence edge 34.In this embodiment, as shown in Fig. 2, driving side cam path 44 is formed circumferentially in sliding panel 18 Peripheral part.

When from the axial direction of sliding panel 18, each driving side cam path 44 is formed as the rotation in sliding panel 18 The approximate ellipsoidal that direction extends.When power is transmitted to output shaft 5 from friction clutch 1, the direction of rotation of sliding panel 18 It is the clockwise direction as shown in the arrow R1 in Fig. 2.

Each driving side cam path 44 includes the first department of assembly 47 and the first tilting cam portion 48.First department of assembly 47 is sliding Rear portion of the movable plate 18 on the R1 of direction of rotation, the first tilting cam portion 48 is front.Driving side cam path 44 has such flat Face shape, in the flat shape, radius of curvature is opposite at the first department of assembly 47 to be increased, and at the first tilting cam portion 48 It is opposite to reduce.First department of assembly 47 has the shape with the form fit of a part of ball 41.Due to ball 41 be it is spherical, So the first department of assembly 47 has the shape of a quarter spherical shape, as shown in Figure 3.First tilting cam portion 48 has in rotation side The inclined-plane to shoal is gradually tilted towards the front side of sliding panel 18 on R1.Driving side cam path 44 can be by cutting or being ground cunning Movable plate 18 and formed.

In the present embodiment, tilt angle or the inclination angle that the first tilting cam portion 48 is formed in sliding panel 18 are different The driving side cam path 44 of four seed types.That is, as shown in figure 3, forming the first driving side cam path 44a with 1 ° of inclination alpha, tool There is 2 ° of inclination alpha of the second driving side cam path 44b, with 3 ° of inclination alpha of third driving side cam path 44c and with 4 ° of inclination alpha The 4th driving side cam path 44d.2 ° of inclination alpha are greater than 1 ° of inclination alpha, and 3 ° of inclination alpha are greater than 2 ° of inclination alpha, and 4 ° of inclination alpha are greater than inclination alpha 3°.That is, the size at the inclination angle in the first tilting cam portion 48 is 1 ° of α, 2 ° of < α, 3 ° of < α, 4 ° of < α.As shown in Fig. 2, three group One to the 4th driving side cam path 44a to 44d is circumferentially disposed at three parts of sliding panel 18.

As shown in Figure 1, slave end cam path 45 is formed in the end in clutch operative orientation side of center flange 34 With in face of sliding panel 18 surface on.In this embodiment, as shown in figure 4, slave end cam path 45 is formed circumferentially in center The peripheral part of flange 34.

When from the end on observation of central plate 27, each slave end cam path 45 is formed as in the rotation side with central plate 27 The approximate ellipsoidal that the side opposite to R2 upwardly extends.When power is transmitted to output shaft 5 from friction clutch 1, central plate 27 direction of rotation is the counter clockwise direction as shown in the arrow R2 in Fig. 4.

Each slave end cam path 45 includes the second department of assembly 51 and the second tilting cam portion 52.During second department of assembly 51 is Front of the core 27 on the R2 of direction of rotation, the second tilting cam portion 52 is rear portion.Slave end cam path 45 has such flat Face shape, in the flat shape, radius of curvature is opposite at the second department of assembly 51 to be increased, and at the second tilting cam portion 52 It is opposite to reduce.Second department of assembly 51 has the shape with the form fit of a part of ball 41.Due to ball 41 be it is spherical, So the second department of assembly 51 has the shape of a quarter spherical shape, as shown in Figure 4.Second tilting cam portion 52 has along rotation side The inclined-plane to shoal is gradually tilted to the rear side of R2 towards central plate 27.Slave end cam path 45 can pass through cutting or grinding center Flange 34 and formed.

In the present embodiment, tilt angle or the inclination angle that the second tilting cam portion 52 is formed in center flange 34 are different Four seed types slave end cam path 45.That is, as shown in figure 5, formed with 1 ° of angle of inclination beta the first slave end cam path 45a, With 2 ° of angle of inclination beta of the second slave end cam path 45b, with 3 ° of angle of inclination beta of third slave end cam path 45c and have incline 4 ° of angle beta of the 4th slave end cam path 45d.2 ° of angle of inclination beta are greater than 1 ° of angle of inclination beta, and 3 ° of angle of inclination beta are greater than 2 ° of angle of inclination beta, and 4 ° of angle of inclination beta are greater than 3 ° of angle of inclination beta.That is, the size at the inclination angle in the second tilting cam portion 52 is 1 ° of β, 2 ° of < β, 3 ° of < β, 4 ° of < β.

As shown in figure 4, to be provided with three group of first to fourth slave end convex for three parts in the circumferential direction of center flange 34 Race 45a-45d.It is convex that the position of first to fourth slave end cam path 45a-45d corresponds to first to fourth above-mentioned driving side The position of race 44a-44d.That is, the first driving side cam path 44a is formed in its position for facing the first slave end cam path 45a Place, and the second driving side cam path 44b is formed in it at the position of the second slave end cam path 45b.Third driving side Cam path 44c is formed in it at the position of third slave end cam path 45c, and the 4th driving side cam path 44d is formed At its position in face of the 4th slave end cam path 45d.More specifically, the first department of assembly 47 of driving side cam path 44 faces Second department of assembly 51 of slave end cam path 45.

In the driving side cam path 44 and slave end cam path 45 of four seed types, each ball 41 is inserted into the first inclination Between the inclination angle in cam part 48 and the second tilting cam portion 52 equal driving side cam path 44 and slave end cam path 45.That is, Three balls 41 are between 12 partial insertion driving side cam paths 44 and slave end cam path 45.Three balls 41 are assemblied in drive In dynamic side cam path 44 and slave end cam path 45, they are rolled, and be inserted in the first rotor 21 and second turn Between son 23.

First tilting cam portion 48 of driving side cam path 44 and the second tilting cam portion 52 of slave end cam path 45 with The cooperation of ball 41 constitutes ball cam work mechanism.The rotatable phase of the second rotor 23 including center flange 34 is relative to including The rotatable phase of the first rotor 21 of sliding panel 18 shifts to an earlier date.Then, ball 41 is at them far from the first department of assembly 47 and the second dress Scroll up with mobile side, portion 51, and make the first rotor 21 relative to the second rotor 23 on clutch operative orientation one Side is mobile, that is, moves on the direction that the first rotor 21 moves away from the second rotor 23.

In Fig. 1, each reaction torque adjustment spring component 46 is by the first rotor 21 towards 23 (18 court of sliding panel of the second rotor To center flange 34) bias, and formed by leaf spring.Spring member 46, which has, is located in axis identical with the axis of output shaft 5 Annular base 46a and press section 46b on line, press section 46b are extended radially outward from base portion 46a, and towards clutch work The other side inclination for making direction, contacts with sliding panel 18 and presses sliding panel 18 to center flange 34.

Base portion 46a is supported in the state that the position on clutch operative orientation is changeable by output shaft 5 in base portion 46a. Base portion 46a is determined on clutch operative orientation by nut member 38, multiple plate spacers 53 and cupuliform centering spacer 54 Position.By the quantity for changing plate spacer 53, thus it is possible to vary position of the spring member 46 on clutch operative orientation.Press section The elastic force of the pressing sliding panel 18 of 46b is increased by increasing the quantity of plate spacer 53, and by reducing plate spacer 53 Quantity reduce.18 pressed portion 46b of sliding panel pressing, and be maintained at ball 41 and be sandwiched in sliding panel 18 and center flange 34 Between state.

Next, by the operation of the friction clutch 1 referring to Fig. 8 and Fig. 9 description with this structure.In Fig. 8 and Fig. 9 In, identical appended drawing reference indicates and the identical component referring to figs. 1 to 7 descriptions.Appended drawing reference 62 indicates power transfer path； 63 indicate reaction torque transmission path.The compression helical spring 31 of the expression spring mechanism 26 of appended drawing reference 64 is applied to the first pressing plate 12 spring force (compressing force).

When power from power source is transmitted to the first rotor 21 via friction clutch mechanism 7, driving side cam path 44 Ball 41 is pressed to the front side of direction of rotation R1 by the first department of assembly 47, as shown in Figure 8.At this point, due to ball 41 be embedded into it is driven Second department of assembly 51 of side cam path 45, therefore center flange 34 is pressed into the front side of direction of rotation R2 so that rotatable phase will not Postpone relative to sliding panel 18.In other words, the first department of assembly 47 and the second department of assembly 51 prevent from including the of center flange 34 Rotatable phase delay of the rotatable phase of two rotors 23 relative to the first rotor 21 for including sliding panel 18.Therefore, power is from One rotor 21 is transmitted to the second rotor 23 via reaction torque limiters mechanisms 25.

If being transmitted to the dynamic of clutch housing 4 from power source while clutch housing 4 and output shaft 5 rotate together Power reduces, then reaction torque is transmitted to friction clutch 1 from 5 side of output shaft.In this case, as shown in figure 9, the second rotor 23 Rotatable phase shift to an earlier date than the rotatable phase of the first rotor 21.When the rotatable phase of the second rotor 23 shifts to an earlier date in this way, The ball 41 of reaction torque limiters mechanisms 25 from the first department of assembly 47 of driving side cam path 44 and slave end cam path 45 Two departments of assembly 51 move to the first tilting cam portion 48 and the second tilting cam portion 52, and in the first tilting cam portion 48 and Amount of exercise corresponding with the size of reaction torque is rolled in two tilting cam portions 52.When ball 41 is convex in the first inclination in this way When moving in wheel portion 48 and the second tilting cam portion 52, the spring force that the first rotor 21 resists spring member 46 works to clutch The side in direction moves.

The interior hub 14 of a part as the first rotor 21 is configured to make when ball 41 rolls scheduled moving distance The end 61 of side on clutch operative orientation is contacted with the first pressing plate 12.End 61 is equivalent to the " pressing in the present invention Portion ".When transmitting reaction torque, the end 61 of interior hub 14 is by the first pressing plate 12 by the side (first for pressing to clutch operative orientation The direction that frictional disk 8 and the second frictional disk 11 move away from each other).This reduce the first pressing plates 12 by friction clutch mechanism 7 The first frictional disk 8 and the second frictional disk 11 by the other side for pressing to clutch operative orientation pressure.As a result, in friction clutch The torque transmitted in device mechanism 7 reduces, and friction clutch 1 slides, and is transmitted to power transfer path 62 from friction clutch 1 Upstream side reaction torque be cut off.

By the way that ball 41 to be changed into the first tilting cam portion 48 with different angle and the second tilting cam portion 52 Driving side cam path 44 and slave end cam path 45, thus it is possible to vary friction clutch mechanism 7 starts the width of reaction torque when sliding It is worth (regulated value of reaction torque).Inclination angle with the first tilting cam portion 48 and the second tilting cam portion 52 becomes larger, due to becoming It is difficult to keep the first rotor 21 mobile to the side of clutch operative orientation, so the regulated value of reaction torque becomes larger.

Rotation is converted into axial direction using ball cam work mechanism according to the reaction torque limiters mechanisms 25 of the present embodiment Movement, therefore working resistance is lower than the cam mechanism for the structure that wherein not revolvable cam follower is slided along cam face Working resistance.Low working resistance allows to cut off or interrupt small reaction torque.In other words, friction clutch 1 slides Half-clutch state can be maintained for a long time.

In the friction clutch being installed on racing car motorcycle, sometimes according to the stroke situation in circuit, the spy of vehicle Property, hobby of driver etc. change the regulated value of reaction torque.The regulated value of reaction torque is that reaction torque limiters mechanisms start to grasp The amplitude of reaction torque when making.It, can be by changing the first ring and the second ring in friction clutch disclosed in patent document 1 The reaction torque of the two transmits the inclination angle of cam surface to change the regulated value of reaction torque.However, the inclination angle of cam face is for first Ring and the second ring are unique.In order to change the regulated value of reaction torque, need to prepare in advance a plurality of types of first rings and second Ring, and store them for replacing.

On the contrary, the multiple types that the first rotor 21 has the inclination angle in the first tilting cam portion 48 different according to this embodiment Driving side cam path 44.A plurality of types of slave ends that second rotor 23 has the inclination angle in the second tilting cam portion 52 different are convex Race 45.It, can be by changing the driving side cam path 44 inserted with ball 41 in the friction clutch 1 according to the present embodiment Change the regulated value of reaction torque with slave end cam path 45.Therefore, the regulated value of reaction torque can be easily varied and do not had to Replace component.

Each spring member 46 of reaction torque limiters mechanisms 25 includes being located in and output shaft 5 according to this embodiment Annular base 46a and press section 46b on the identical axis of axis, press section 46b are radially outside from base portion 46a Extend and is tilted towards the other side of clutch operative orientation.Position of the base portion 46a in base portion 46a on clutch operative orientation It sets and is supported in the state of can be changed by output shaft 5.In this embodiment, two spring members 46 they output shaft 5 axis It is used in the state of overlapping each other upwards, as shown in Figure 1.

Sliding panel 18 is corresponded to the sum of the spring force of spring member 46 by the pressure for pressing to center flange 34.It is pressed when reducing When power, it can be adjusted by the way that the quantity of spring member 46 is minimized one.In this case, pass through spring member 46 Reduction increase plate spacer 53.When increasing pressure, as long as spring member 46 can be contained in stiffening plate 37 and nut structure Between part 38, so that it may adjust pressure by increasing the quantity of spring member 46.In this case, by increasing spring structure Part 46 reduces plate spacer 53.

Due to changing the pressure that sliding panel 18 is pressed to center flange 34 by the quantity for changing spring member 46, so It can change the resistance when the first rotor 21 is moved to the side of clutch operative orientation, that is, the regulated value of reaction torque.This reality It applies example and is capable of providing such a friction clutch 1, it can be to from friction clutch 1 to the upstream side of power transfer path 62 The amplitude of the reaction torque of transmitting is accurately adjusted.

Allow driver for the motorcycle between engine and speed changer is assembled according to the friction clutch 1 of the present embodiment Adjust the system of engine brake as needed according to driving environment and situation (for example, route, weather and used component) The intensity and generation time of power, convergent intensity and time etc..Since the adjustable motorcycle of driver with him to want Engine braking characteristic, it is possible to easily predictive behavior, and can carry out that vehicle performance is made maximumlly to ride.

The explanation of reference number and symbol

1 ... friction clutch, 2 ... input links, 5 ... output shafts (output link), 7 ... friction clutch machines Structure, 8 ... first frictional disks, 10 ... friction members, 11 ... second frictional disks, 12 ... first pressing plates, 13 ... second Pressing plate, 21 ... the first rotors, 23 ... second rotors, 25 ... reaction torque limiters mechanisms, 41 ... balls, 44 ... drive Dynamic side cam path, 45 ... slave end cam paths, 46 ... spring members, 46a ... base portion, the press section 46b ..., 47 ... First department of assembly, 48 ... first tilting cam portions, 51 ... second departments of assembly, 52 ... second tilting cam portions, 61 ... End (press section).

Claims (according to the 19th article of modification of treaty)