TWI267599B - Driven pulley device of V-belt type automatic transmission - Google Patents

Abstract

The driven pulley device of a V-belt type automatic transmission in accordance with the present invention is able to prevent the generation of twist in a coil spring, and to prevent the generation of waving phenomenon, which is provided with a fixed pulley half body fixed to an inner cylinder, a movable pulley half body fixed to an outer cylinder capable of relatively turning and relatively moving in the axial direction in relation to the inner cylinder, a torque cam mechanism provided between the inner cylinder and the outer cylinder, a spring receiver member fixed to the outer cylinder, and a coil spring for surrounding the outer periphery and provided to be shrunken between the movable pulley half body and the spring receiver member and in which a V-belt for transmitting rotating power from a driving pulley device is pinched between opposite conical surfaces of the fixed pulley half body and the movable pulley half body. The coil spring 93 is guided by a guide member 106 in the inner periphery thereof on a movable pulley half body 90 side thereof, and a thrust bearing means 107 is interposed between the spring receiver member 92 and the coil spring 93.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driven pulley device of a V-belt type automatic transmission, the driven pulley device comprising an inner cylinder and an outer cylinder, the inner cylinder and the outer cylinder The slidable manner is slidably coupled to the relative rotation about the axis and the relative movement in the axial direction; the fixed pulley half fixed to the inner cylinder; fixed in a manner opposite to the fixed pulley half body a movable pulley half body on the outer cylinder; a torque cam mechanism, the torque cam mechanism corresponding to a relative rotational phase difference between the movable pulley half body and the fixed pulley half body, the axial component force acting on The manner between the two pulley halves is disposed between the inner cylinder and the outer cylinder; a spring seat member for clamping the movable pulley half body and the fixed pulley half body a position fixed between the inner cylinder; a coil spring surrounding the outer cylinder, being compressed between the movable pulley half and the spring seat member; transmitting rotational power from the driving pulley device V-belt pulley half fixed to the holder, and

Between the opposite conical faces of the movable pulley half. [Prior Art] In such a driven pulley device, since the torque cam mechanism can correspond to the relative rotational phase difference between the movable pulley half and the fixed pulley half, the axial force acts on the movable belt. On the wheel, the coil spring compressed between the movable pulley and the spring seat member generates a twist, and such a twist will exert a reaction force on the axial force, so that the movable pulley half presses the side of the V-belt. The pressure is unstable and generates vibration. Thus, in the type disclosed in Patent Document 1, at least between the movable pulley and the coil spring, and between the spring 5 312XP/invention specification (supplement)/94-08/94112221 1267599 seat member and the coil spring In one case, a plate-shaped bearing is introduced, so that the coil spring does not generate a twist. (Patent Document 1) Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. A wobble phenomenon occurs on the circumferential surface. If a wobble phenomenon occurs, the coil spring comes into contact with surrounding members to generate an abnormal sound. However, in the above-mentioned past type, it is impossible to prevent the coil spring from swinging. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a V-belt type automatic transmission which not only prevents the coil spring from being twisted but also prevents the swing phenomenon. (the means to solve the problem)

In order to achieve the above object, the invention of claim 1 is a driven pulley device of a V-belt type automatic transmission, which is provided with an inner cylinder and an outer cylinder which are slidably fitted to each other. a relative rotation about the axis and a relative movement in the axial direction; a fixed pulley half body fixed to the inner cylinder; a movable pulley half body fixed to the outer cylinder opposite to the fixed pulley half body; a torque cam mechanism configured to apply an axial component force between the two pulley halves according to a relative rotational phase difference between the movable pulley half and the fixed pulley half Between the inner cylinder and the outer cylinder; a spring seat member fixed to the inner portion at a position between the movable pulley half and the fixed pulley half body; ) /9108/9411222 ]

a coil spring; and a coil spring surrounding the outer cylinder and being compressed and disposed between the upper movable pulley half body and the spring seat member; wherein the V-belt transmitting the rotational power from the driving device is clamped to the fixed pulley Between the opposite conical surfaces of the semi-body pulley halves, characterized by comprising: a guiding member guiding at least the inner circumference of the spring on the side of the movable pulley half; and a thrust bearing means It is interposed between the upper spring member and the coil spring. Further, in the invention of claim 2, in addition to the invention of the invention of claim 1, wherein the thrust bearing means is formed of the present slip resin, and a pair of bearing members overlapping each other are clamped to the coil spring and Between the above spring seat members. Further, the invention of claim 3 or 4, wherein the guide member is formed of the present slip resin, is applied in addition to the invention of the first or second invention. Furthermore, the invention of claim 5, in addition to the invention of claim 1 to 4, wherein the outer cylinder of the movable pulley half and the coil spring are supported on the side of the movable pulley half A metal collar is interposed between the guiding members of the surface. (Effect of the Invention) According to the invention of claim 1, in the case where the relative rotational phase difference between the movable pulley and the fixed pulley half is generated, since the thrust bearing means is interposed between the spring seat and the coil spring, The spiral can be rotated together with the movable pulley half body so that the rotation of the opposite movable pulley is not generated, and the coil spring is prevented from being twisted. In addition, in the live 312XP / invention manual (supplement) m-08/94112221, the live pulley and the upper spiral cover the first body of the above-mentioned range and the upper end half body member spring half body belt 7

1267599 On the side of the wheel half body, the inner side of the coil spring is guided by the guiding member, so the half side of the pulley can be beltd to center the inner circumference of the coil spring to prevent the snail from swinging. In particular, the half of the movable pulley half side of the axial coil spring corresponding to the movable pulley half has a larger amount of movement, and the guide member is used to feed the inner circumference of the side with a larger amount of action. In this way, the occurrence of the wobble phenomenon can be prevented more effectively. Further, according to the invention of the second application of the patent application, the thrust bearing means can be formed in a pole structure, and in addition, the two bearing members themselves are slippery, so that the dust wear resistance can be improved. According to the invention of claim 3 or 4, the sliding between the inner circumference of the coil spring on the movable body side and the guide member can be set small, and the gap between the coil spring and the guide member can be set small, which is more effective. Further, the spiral spring is prevented from being oscillated, and the movement can be improved. Further, according to the invention of claim 5, the thickness of the thin guide member can be easily performed, and the inner circumference of the coil spring which is made by thermal expansion of the guide made of resin can be easily performed. The gap management, in addition, the difference in the coefficient of friction of the spring seat member side, more surely produces relative rotation between the coil spring and the spring member. [Embodiment] This embodiment will be described below based on an embodiment of the present invention shown in the drawings. 1 to 9 show an embodiment of the present invention, Fig. 1 is a side view of the moving and rear wheels, and Fig. 2 is an enlarged view of a main portion of Fig. 2 taken along line 2-2 of Fig. 1. Figure 4 is along the 312 ΧΡ / invention description _ patch in Figure 3 / 94-08 / 94112221 in the movable coil spring movement, like the guide, simple with a pulley half, can do this, can be done . The grounding member can maintain the force unit diagram of the spring seat structure, FIG. 5 is a cross-sectional view of the line 4 1267599, FIG. 5 is a sectional view taken along line 5-5 of FIG. 3, and FIG. 6 is an enlarged view of the driven pulley device. A transverse cross-sectional view, FIG. 7 is a view of the cover and the soundproof cover viewed from the direction of the arrow 7-7 in FIG. 2, and FIG. 8 is a view of the cover and the soundproof cover viewed from the direction of the arrow 8-10 in FIG. FIG. 9 is a diagram showing test results of noise occurrence conditions. First, in FIGS. 1 and 2, a power unit P composed of an engine E disposed in front of the rear wheel WR and a V-belt type automatic transmission disposed between the engine E and the rear wheel WR is mounted on the second wheel. On the body of the locomotive (not shown in the figure), the rear wheel WR provided on the right side of the rear portion of the power unit 支承 is supported by the rear portion of the power unit Ρ.

The engine body 11 of the engine casing includes a crankcase 1 2 that rotatably supports a crankshaft 16 having an axis of rotation parallel to the axis of rotation of the rear wheel WR; the cylinder block 13 The cylinder block 13 is connected to the crankcase 12; the cylinder head 14 is connected to the cylinder block 13 on the opposite side of the crankcase 12; the cylinder cover 15, the cylinder cover 15 is in the cylinder block The opposite side of 13 is connected to the cylinder head 14. The cylinder block 13 is disposed substantially horizontally in accordance with the axis of the cylinder inner diameter 17 provided on the cylinder block 13, that is, the cylinder axis C1 is slightly advanced in the front-rear direction of the second turbine. In addition, the crankcase 1 2 is formed by a pair of crank axle housing halves 1 2 a, 1 2 b on the cylinder axis C 1 and with the crank axle The axis of the 16 is perpendicular to the plane of the plane, and between one of the crankcase halves 1 2 a, 1 2 b of the two crankcase halves 1 2 a, 1 2 b and the crankshaft 16 is provided with a ball bearing 18 Between the other crankcase half body 1 2 b and the crank shaft 16 , a rolling bearing 19 is provided and is set at 9 312 XP / invention manual (supplement) / 94_08/94112 21

1267599 The annular seal member 20 of the outer side of the rolling bearing 1 9 . A combustion chamber 23 is formed between the cylinder head 14 and a piston 2 1 slidably fitted in the cylinder r, and an intake valve 24 for controlling the combustion chamber gas and control is supplied from the combustion chamber 2 The exhaust gas 2 of 3 is disposed on the cylinder head 14 in a substantially V-shaped manner on a plane perpendicular to the rotational axis of the crankshaft 16 . Further, the ignition plug 26 of the combustion chamber 23 is mounted on the left side surface of the cylinder head 14 in a state of being directed toward the traveling side of the two-wheeled vehicle. Between the cylinder head 14 and the cylinder cover 15 5, the valve mechanism 30 is accommodated in such a manner as to realize the opening and closing drive of the intake and exhaust valves 25, and the valve mechanism 30 includes the axis of the crankshaft 16 The parallel shafts are rotatably supported on the cylinder head 14 and have camshafts 27 for intake and exhaust gases 28,29. At one end portion of the cam shaft 27, the driven sprocket 31 is fixed. On the crank shaft 16 on the outer side of the ball bearing 18, at the position corresponding to the upper sprocket 31, the first drive sprocket 3 2, the drive sprocket 3 2 and the driven chain are fixed. On the wheel 3 1 , an annular cam 3 3 is wound, which is movably accommodated inside the chain chamber 34 formed in the range of the cylinder head cylinder 15 . By, for example, a drive sprocket 3 2, the driven sprocket 3 1 and the cam chain 3 3, the drive cam is rotationally driven at a frequency of one-half the number of revolutions of 16 while referring to FIG. 3, the crankshaft 16 is spaced apart The opening is opposite to the crank arms 1 6 a, 16 b, on the crank arms 16 6 a, 16 b, at both ends of the shank pin 37. On the other hand, one end of the connecting rod 38 is connected to the 312XP/invention specification (supplement)/94-08/94112221, the diameter of the suction and exhaust valve projection of the diameter of 7 7 23, facing the front valve 2 4 , the movement The wire ^ is in the form of a cam, and the slave is connected to the first chain 14 and the crankshaft b 27 ° of the gas. The above-mentioned live 10 1267599 'plug 21, the other end of the link 38, that is, The large end portion 38 a is connected to the crank pin 37 by a needle bearing 3 9 . On the outer side of the first drive sprocket 3 2, a second drive sprocket 40 is fixed to the crankshaft 16. On the other hand, an oil pump 41 (refer to FIG. 1) that sucks oil from the bottom in the crankcase 1 2 is connected to the same shaft as the cooling water pump 4 2 (see FIG. 1), and is disposed at the bottom of the crankcase 1 2 . The cooling water pump 42 is used to recirculate the cooling water in the cooling jacket 43 provided on the cylinder block 13 and the cylinder head 14. From the second driving sprocket 40, through the chain 44, the rotary power is transmitted. The above oil pump 4 1 and the cooling water pump 4 2 are supplied. Further to the second drive sprocket 40, a generator 4 6 is provided, which includes a stator 47 fixed to a right cover 45 mounted on the right side surface of the crankcase 12, and a stator 47 The stator 47 is fixed to the outer rotor 48 on the crankshaft 16.

A driven gear 4 9 is disposed between the second drive sprocket 40 and the outer rotor 48, and the driven gear 4 is supported on the crankshaft 16 along the same axis so as to be rotatable relative to the crankshaft. At 16, the driven gear 49 is connected to the outer rotor 48 via a one-way clutch 50. However, the above-described driven gear 49 can be input with rotational power from a stator motor not shown in the figure, and when the engine E is started, the driving force from the stator motor is transmitted to the crankshaft 16 after the engine E is started. The power from the crankshaft 16 is not transmitted to the stator motor side by the action of the one-way clutch 50. A cylindrical support cylinder portion 45a surrounding the right end portion of the crankcase 1 2 is integrally formed at an intermediate portion of the inner surface of the right cover 45, and an annular seal member 53 is interposed in the support cylinder. Between the 4 5 a and the crankshaft 16 , there is a bend 11 312XP / invention manual (supplement) /94-08/94112221

1267599 The oil chamber 5 4 at the right end of the stem shaft 16 is formed on the inner surface side of the right cover 45, and the oil passage 55 communicates with the oil chamber 54. The oil passage 55 is guided by the oil of the i-oil pump 41. The way is set in the crankcase 1 2" 4 5 . On the crankshaft 16 described above, the first oil passage hole 56 with the bottom portion has a substantially corresponding position of the ball bearing 18, and the first oil passage at the bottom of the belt is disposed on the same shaft according to the inner end being closed. The outer chambers of the holes 56 are connected to each other. Further, on the crank pin 37, the second oil passage hole 57 at the bottom is coaxially disposed, and the second oil passage hole 57 is opened on the side of the ball 18 to reduce the weight and supply oil. On the other hand, the ball bearing 18 side of one of the crank arms 16a of the name shaft 16 is formed to form an annular mounting recess 58 facing the open end of the second oil passage hole 57, covering the second oil passage. The open end of the hole 57 is annular and is fixed by being fitted to the mounting recess 58 by the outer peripheral portion of the oil transfer plate 59. Further, in the crank shaft 16 described above, the first communication hole 60 is opened, and a communication hole 60 sends oil from the first oil passage hole 56 to between the upper plate 59 and the crank arm 16a. . Further, in the crank pin 37, the oil in the second oil passage hole 57 is sent to the second hole 61 of the needle bearing 39 side. Then, from the oil pump 41, through the oil passage 55, the oil chamber 5 4 is fed through the first oil passage hole 561, the first communication hole 60, the oil delivery plate 5 9 between the arms 1 6 a, and the second oil The via hole 57 and the second via hole 161 are provided for the bearing 39. In addition, in the crankshaft 16 , a third communication port 3 is further provided to communicate the oil from the first oil passage hole 56 to the middle of the 312XP/invention specification (supplement)/94-08/94112221. ίFrom 3 right cover L and upper J way 6 and upper ί have bearing: crank i face, part U owes the L oil connection open - connected 丨 oil through 7 crank r needle, 62, f shank 12

1267599 1 6 and the driven gear 4 9 between. However, the oil supplied to the needle bearing 39 is used for lubrication between the big end of the link 38 and the crank pin 37, but it is accompanied by the swirling of the crank shaft 16 for the scattering of the oil. A portion of the side-to-side bearing 63 has a shaft parallel to the axis of the crankshaft 16 and is disposed on the crank arm 16b. Referring to Fig. 4, the other crank arm 16b is provided with a weight portion 16b on the side opposite to the connecting portion of the crank pin 37 with respect to the axis C2 of the crankshaft, the crank arm 16b. The inner side surface is formed by an arc-shaped upper surface portion 64, a middle surface portion 65 and a lower surface portion 6 6 corresponding to the above-mentioned portion 16b, which is in accordance with the axis and the crank passing through the crank pin. The straight line L of the axis C 2 of the shaft 16 is parallel to the connecting portion of the crank pin 37 and the weight portion 16ba, extending in a manner, and the intermediate surface 65 is in accordance with the lower surface 66 The intermediate forming step 607 is formed in a manner that the inward side is slightly protruded from the lower side surface 66, and the surface portion 64 forms a step warning relative to the intermediate surface 65 between the lower surface 66 and the intermediate surface 65. It is formed in such a manner as to protrude toward the inner side. However, one end of the oil hole 63 is open to the lower surface 66 in the vicinity of the portion where the two step portions 67 are curvedly connected, and the oil scattered from the needle shaft is easily transmitted along the step portion 6 7 , 6 8 and sent. To the oil hole 6 3 - while referring to FIG. 5, on the outer side surface of the other crank arm 16b opposite to the rolling 19, a recess portion 6 9 is provided, which is substantially the same as the rolling bearing 19. The arcuate shape is formed, and the other end of the oil hole 633 opens the recess 69. In addition, the oil derived from the oil hole 63 is easily retained in the concave 312XP / invention manual (supplement) / 94-08 / 94112221 〖 38a turned oil another 16 , with a weight of another 37 stretched, with a ladder The south position "8, 68 bends 39-end. The bearing corresponds to the port 6 9 13 1267599, and is scattered from the recess 6 9 to the side of the roller bearing 19, whereby oil can be supplied to the roller bearing 19. Returning again to FIG. 2, the V-belt type automatic transmission Μ is housed in the accommodating chamber 70 in the transmission case 71, and the box 71 covers a part of the engine main body 1 1 from the side, and is disposed on the engine main body 1 1 . And extending to the left side of the rear wheel WR, the gearbox 7 1 is composed of an inner box 7 2 , an outer box 7 3 and a reduction chassis 7 4 , and the inner box 7 2 and a pair of crank axle box halves constituting the crank axle box 12 The other crankcase half body 1 2 b of 1 2 a, 1 2 b is integrally connected, and the outer Φ box 7 3 covers the inner box 7 2 from the outside and is fastened to the inner box 7 2 , the reduction chassis 7 4 inside the outer case 7 3, fastened to the rear of the inner case 7 2, between the inner case 7 2 and the reduction case 7 4 and the outer case 7 3, forming a housing chamber 70, in the inner box 7 2 and decelerating A gear chamber 75 is formed between the casings 7 4 . The V-belt type automatic transmission 构成 is composed of a drive pulley device 798, a driven pulley device 7 9 and an annular V-belt 80, and the drive pulley device 7 8 is mounted on the crankcase 1 2, Projecting on the other end of the crankshaft 16 inside the accommodating chamber 70, the driven pulley device 7.9 is mounted on the crank

The axes parallel to the shafts 16 are rotatably supported on the inner box 7 2 and the output shaft 81 on the reduction housing 74, which transmits power from the drive pulley unit 7 8 to The driven pulley device 7 9 . The drive pulley device 7 8 includes a fixed pulley half body 8 fixed to the crank shaft 16 and a movable pulley half body 8 2 which is adjacent to the fixed pulley half body 8 1 and the centrifugal weight 8 3 The centrifugal weight 8 3 corresponds to the increasing force π of the number of revolutions of the crankshaft 16 and moves to the outside in the radial direction, and the movable pulley half 8 2 is accompanied by a force corresponding to the number of revolutions of the crankshaft 16 The centrifugal weight 8 3 to half 14 312 ΧΡ / invention manual (supplement) / 94-08 / 94112221 1267599 in the case of the outer side of the radial direction, is biased in the direction close to the fixed pulley half body 81. In FIG. 6, the driven pulley device 79 includes an inner cylinder 87 between the output shaft 81 and a needle bearing 85 and a ball bearing 86, coaxially surrounding the output shaft 8 1 ; a barrel 88 slidably fitting the inner cylinder 87 to achieve relative rotation about the axis and relative movement in the axial direction; a fixed pulley half 89 fixed to the inner cylinder 87; the movable pulley half 90 And the fixed pulley half 89 is opposite to the fixed pulley half 89, and is fixed on the outer cylinder 88; the torque convex φ wheel mechanism 9 1 is corresponding to the movable pulley half 90 and the fixed pulley half 8 9 The relative rotational phase difference is applied between the two pulley halves 8 9, 9 0 in an axial component, between the inner cylinder 87 and the outer cylinder 88; the spring seat member 92, The movable pulley half 90 is clamped between the fixed pulley half 8 9 and fixed to the inner cylinder 81; a coil spring 93 surrounds the outer cylinder 88 and is compressed and disposed on the movable pulley half. Between the body 90 and the spring seat member 92; the centrifugal clutch 94 is in a power transmission state in accordance with the case where the number of revolutions of the engine exceeds the set number of times Disposed between the inner tube 87 and the output shaft 81. In addition, between the fixed conical surface 8 1 of the drive pulley device 7 8 and the opposite conical surfaces 8 1 a, 8 2 a of the movable pulley half 8 2, and the driven pulley device 7 9 Between the fixed pulley half 8 9 and the opposite conical surface 8 9 a, 90 a of the movable pulley half 90, the V-belt 80 is clamped, in the drive pulley device 78, along with the crank axle With an increase in the number of revolutions of 16 6 , the movable pulley half 8 2 approaches the fixed pulley half 8 1 , whereby the fixing of the V-belt 80 and the winding on the movable pulley half 8 1, 8 2 The radius increases, corresponding to this case, in the 15 312 XP / invention specification (supplement) / 94-08 / 94112221 1267599 driven pulley device 7 9 , the V-belt 80 is fixed and the movable pulley half 8 The winding radius on 9,9 0 is reduced. The fixed pulley half 8 9 is fixed to one end of the inner cylinder 81 by a plurality of rivets 915, and the spring seat member 92 is fixed to the other end of the inner cylinder VIII. The spring seat member 92 also forms part of the centrifugal clutch 94. The centrifugal clutch 94 includes a bowl-shaped clutch outer portion 9, 6 which is fixed to the other end of the output shaft 81, and a centrifugal weight 9 7 ... and a clutch spring 9 8 ..., the centrifugal weight

9 7 ... can be rotated about an axis parallel to the output shaft 81, and supported by a plurality of portions of the spring seat member 92 by a shaft, the clutch springs 9 8 ... are disposed on each of the centrifugal weights 9 7 ... and the spring seat members Between 9 and 2, when the centrifugal force acting on each of the centrifugal weights 9 7 exceeds the spring biasing force of each of the clutch springs 9 8 corresponding to the rotation of the spring seat member 92, the centrifugal weights 9 7 ... The manner is engaged with the clutch outer portion 96, and the inner cylinder 8, i.e., the fixed pulley half body 819, is coupled to the clutch outer portion 963, i.e., the output shaft 81. The movable pulley half 90 is fixed to one end of the outer cylinder 8 by a plurality of rivets 10 2 ... in such a manner as to face the fixed pulley half 8 9 . Further, the torque cam mechanism 9 1 is a conventionally known mechanism including a cam hole 1 0 3 ... opened at a plurality of portions of the outer cylinder 8 8; and is disposed in the inner cylinder 8 in such a manner as to be inserted into the cam holes 1 0 3 . The cam pins 1 0 4 in 7 are supported by the rollers 1 0 5 ... on the cam pins 1 0 4 ... in such a manner as to achieve rolling inside the cam holes 1 0 3 . The distance between the fixed pulley half 8 9 and the movable pulley half 90 in the driven pulley device 79 is generated by the coil spring 9 by the axial force generated by the above-described torque cam mechanism 91. The axial elastic force is caused by a V-shaped action that is spaced along the direction between the fixed pulley 16 312 ΧΡ / invention specification (supplement) /94-08/94112221 1267599 half body 89 and the movable pulley half 90 The balance between the forces generated by the belt 80 is determined. On the side of the movable pulley half 90, the inner circumference of the coil spring 913 is guided by the guide member 106, and the thrust bearing means 107 is interposed between the spring seat member 92 and the coil spring 93.

One end of the guiding member 106 has a flange portion 1 0 6 a that supports one end of the movable pulley half 90 side of the helical magazine 9 3 , the guiding member 1 0 6 is formed of a self-lubricating resin and has a cylindrical shape, and one end of the coil spring 913 is supported by the flange portion 1 0 6 a of the guiding member 106, and the movable pulley 90 of the coil spring 9.3 The inner circumference of the side is guided by the guiding member 106. Further, the guide member 106 is provided with a plurality of slits 1 0 8 ... extending from one end to the other end side; and a plurality of slits 1 0 9 ... extending from the other end toward the one end side. Further, between the movable pulley half 90 and the outer cylinder 8 8 and the guide member 160 having the flange portion 1 0 6 a, a cylindrical metal collar 1 1 0 is provided. The collar 1 10 supports the flange portion 1 0 6 a of the guide member 106, and has one end of the coil spring 913 inserted, and integrally has a support portion 1 1 having a substantially L-shaped longitudinal section at one end. 0 a, the collar 1 10 0 surrounds the outer cylinder 88 coaxially in such a manner as to close the cam hole 1 0 3 ... opened on the outer cylinder 8 8 from the outside. However, in each of the cam holes 1 0 3..., and in the annular chamber 1 1 1 formed between the needle bearing 8 5 and the ball bearing 8 6 between the output shaft 8 1 and the inner cylinder 8 7 , the grease is filled. In the inner cylinder 87, a communication hole 1 1 2 connecting the annular chamber 1 1 1 and each of the cam holes 1 0 3 ... is opened, and the outer circumference of the axial end portions of the outer cylinder 8 8 is 17 312XP / invention manual (Supplement) /94-08/94112221 1267599 The annular seal members 113, 113 elastically contacting the inner circumference of the collar 110 are mounted on the inner circumference of both axial end portions of the outer cylinder 88, and the inner cylinder 87 is attached. The outer circumferential sliding contact of the annular sealing member Π 4, Π 4. In the thrust bearing means 107, a pair of bearing members 1 1 5, 1 16 which are formed of a self-lubricating resin and which are overlapped with each other are sandwiched between the coil springs 9 3 and the spring seat members 92. In one configuration, one bearing member 1 1 5 integrally has a fitting tubular portion 1 15 a and a flat annular bearing portion Π 5 b, and the fitting tubular portion 1 15 a is disposed on the spring seat member 92 The circular recess Φ 1 1 7 is fitted, the flat annular bearing portion 1 1 5 b is in contact with the closed end of the recess 1 17 , and the other bearing member 11 6 includes a flat annular bearing portion 1 1 6 a And positioning the cylindrical portion 1 1 6 b, the flat annular bearing portion 1 1 6 a is clamped between the bearing portion 1 1 5 b and the coil spring 9 3 , the positioning cylindrical portion 1 1 6 b according to the insertion spiral The inner circumference of the other end portion of the spring 913 is fixed to the inner circumference of the bearing portion 1 16 a so as to be positioned relative to the position of the coil spring 133. In addition, returning to Figure 2 again, in the above described reduction chassis 7 4 and the inner box

The axle 1 1 8 rotatably supporting the rear wheel WR, the end of the axle 1 18 projecting from the gearbox 7 1 is rotatably supported on the arm 1 1 9 , the arm 1 1 9 is connected to the engine main body 1 1 and is disposed on the right side of the rear wheel WR. Inside the gear chamber 75, a reduction gear train 1 2 0 disposed between the output shaft 81 and the axle 1 18 is accommodated, and the reduction gear train 1 2 0 is a first gear provided on the output shaft 81. 1 2 1, a second gear 1 2 3, a third gear 1 2 4 and a fourth gear 1 2 5 are disposed, and the second gear 1 2 3 is disposed in parallel with the output shaft 8 1 and the axle 1 1 8 to be rotatable Supported in the inner case 7 2 and the deceleration 18 312XP / invention manual (supplement) /94-08/94112221 1267599 on the intermediate shaft 1 2 2 on the chassis 71, meshing with the first gear 1 2 1 , the third The gear 1 2 4 is disposed on the intermediate shaft 1 2 2 , and the fourth gear 1 2 5 is meshed with the third gear 1 2 4 and disposed on the axle 1 1 8 . In the side wall of the portion of the outer case 73 of the gearbox 71 opposite the drive pulley device 78, an internal external air suction port 1 2 6 for drawing cooling air into the accommodation chamber 70 is opened. The outer circumference of the movable pulley half 90 in the drive pulley device 78 is integrally provided with a cooling fan 1 2 7 for cooling air taken from the external air suction port 1 26 Dispersed into the interior of the accommodating chamber 70. Referring to FIG. 7, the outer side surface of the gearbox 7 1 is covered by a cover 1 2 8 and a soundproof cover 1 2 9 , and the cover 1 2 8 includes a portion opening the outer air suction port 1 2 6 to cover the gearbox 71. The outer side of the front half is fastened to the outer case 7 3 of the gearbox 7 1 at a plurality of locations, and the soundproof cover 1 2 9 covers the gearbox 7 1 on the side corresponding to the driven pulley device 7 9 . The outer half of the rear half is fastened to the outer case 73 of the transmission 71 at a plurality of locations.

Further, in a manner of covering the front edge portion of the soundproof cover 1 29 at the rear edge portion of the cover 1 28, the cover 1 28 and the soundproof cover 1 29 are attached to the transmission case 7 1 and are provided on the soundproof cover. The two hub portions 1 2 9 a of the front portion of 1 2 9 are clamped between the rear of the cover 1 2 8 and the gearbox 7 1 , the rear of the cover 1 28 and the front of the soundproof cover 1 2 9 The screw members 1 3 0... are commonly fixed to the gearbox 7 1 . Further, between the rear edge portion of the cover 1 28 and the front edge portion of the soundproof cover 1 29, a suction port 133 opened at the rear side is formed between the cover 1 28 and the transmission 71. An air introduction chamber 1 3 2 communicating with the suction port 131 is formed. According to the manner of 19 312XP/invention specification (supplement)/94-08/94112221 1267599 for clogging the above-mentioned external air suction port 1 2 2 from the air introduction chamber 1 3 2 side, the filter 13 3 is mounted on the gearbox 7 1 On the outer side surface, the outside air fed into the air introduction chamber 133 from the suction port 133 is purified by the filter 133 and sucked into the accommodating chamber 70. Referring also to Figure 8, between the gearbox 7 1 and the soundproof cover 1 29, for example, four soundproof materials 1 3 7,1 3 8,1 3 9,1 4 0 are provided to shift the gearbox 7 1 and the soundproofing The space between the covers 1 29 is divided into a plurality of, for example, three closed spaces 134, 135, 136,

Each of the soundproof materials 1 3 7 to 140 is cut into strips by the cut-off forming of the ethyl phthalate sheets, and one surface of the soundproof materials 1 3 7 to 1 40 is bonded to the gearbox by an adhesive. In any of the 7 1 and the soundproof cover 1 2 9 , in the present embodiment, the inner surface of the soundproof cover 1 29 is adhered. Next, the action of the present embodiment will be described. In the driven pulley device 79 of the V-belt type automatic transmission, at least the inner circumference of the coil spring 9 3 is guided by the guide member on the movable pulley half 90 side. 1 0 6 is guided, between the spring seat member 92 and the coil spring 93, a thrust bearing means 107 is provided, whereby the coil spring 9 3 can be rotated together with the movable pulley half 90, so that The rotation of the opposite movable pulley half 90 is not generated, and the coil spring 9 3 can be prevented from being twisted. Further, since the inner circumference of the coil spring 913 is guided by the guide member 160 on the side of the movable pulley half 90, it is possible to prevent the coil spring 9 from swinging on the movable pulley 90 side. In order to center the inner circumference of the coil spring 93. In particular, corresponding to the axial movement of the movable pulley half 90, the half of the movable pulley half 90 side of the coil spring 9 has a large amount of movement, and the amount of movement of the member by the guiding member 106 The inner circumference of the larger side is guided, 20 312 ΧΡ / invention manual (supplement) / 94-08/94112221 1267599 Thereby, the occurrence of the oscillating phenomenon can be more effectively prevented. Further, since the thrust bearing means 107 is constituted by sandwiching a pair of bearing members 1 1 5, 1 16 which are overlapped each other between the coil spring 9 3 and the spring seat member 92, it can be constituted by an extremely simple structure. Thrust bearing means 1 0 7, In addition, the two bearing members 1 1 5, 1 16 are formed of a self-lubricating resin, so that even in the case where the cooling air supplied to the accommodating chamber 70 contains dust, the dust can be improved. Wear resistance. Further, the above-described guiding member 106 is also formed of its own lubricating resin, and by this, the sliding between the inner circumference of the coil spring 9 3 on the movable pulley half 90 side and the guiding member 106 can be made. good. As a result, the gap between the coil spring 9 3 and the guide member 106 can be set as small as possible, and the coil spring 9 can be more effectively prevented from being oscillated, and the operability can be improved.

Further, since the movable pulley half 90 and the outer cylinder 8 8 are disposed on the side of the movable pulley half 90, the guide member 106 of the end surface of the coil spring 923 is provided with metal. Since the collar Π 0 is set, the thickness of the guide member 106 can be set small, and the gap management of the inner circumference of the coil spring 913 which is caused by the thermal expansion of the guide member 106 formed as a resin can be easily performed. Further, the difference in friction coefficient from the side of the spring seat member 92 can be maintained, and the relative rotation can be more surely generated between the coil spring 913 and the spring seat member 92. Further, due to the gearbox 711 and the outer side surface covering the transmission case 7, the space between the soundproof cover 1 29 mounted on the gearbox 7 1 is divided by the soundproof materials 1 3 7 to 1 40 a plurality of enclosed spaces 1 3 4 to 1 3 6, so the soundproof material 1 3 placed between the gearbox 7 1 and the soundproof cover 1 2 9 by means of 21 312XP / invention manual (supplement) /94-08/94112221 1267599 The 7 to 140 absorption mode suppresses noise emitted from the gearbox 71 by preventing sound generation in the closed spaces 1 3 4 to 13 3 formed between the gearbox 7 1 and the soundproof cover 1 29 In a manner of resonance, the above noise is suppressed, and the space between the gearbox 7 1 and the soundproof cover 1 29 is divided into a plurality of closed spaces 1 3 4 to 1 3 6 through the soundproof materials 1 3 7 to 1 4 0 With such a simple structure, a sufficient noise prevention effect can be obtained.

Here, between the soundproof cover 129 and the gearbox 71, the state in which no sound absorbing member is present is displayed by Α, and the state in which the soundproof material is provided is in the range of the front between the soundproof cover 129 and the gearbox 71. B shows that, according to the present invention, the state in which the soundproof cover 1 29 and the gearbox 7 are divided into a plurality of closed spaces 1 3 4 to 1 3 6 by the soundproof materials 1 3 7 to 1 40 is displayed by C, When the noise occurrence state of the two-wheeled vehicle of each of the states A to C is measured, it is determined that the result as shown in FIG. 9 is obtained, and the noise prevention effect excellent in the state of C of the present invention is obtained. In addition, since the soundproof materials 1 37 to 1 40 are formed into a tape by the cut-off forming of the ethyl phthalate sheet, one surface of the soundproof materials 1 3 7 to 1 40 is attached to the gearbox through an adhesive. In any of the 71 and the soundproof cover 1 29, it is attached to the soundproof cover 1 29 in this embodiment, so if it is a sheet-shaped soundproof material having a shape corresponding to the shape of the soundproof cover 1 29 Compared with the past occasions, the yield of the soundproof material 1 3 7 to 1 40 can be improved, and the soundproof material 1 37 to 1 40 can be adhered to the gearbox 7 1 and the soundproof cover 1 2 9 In any of the above, the soundproof cover 129 is attached to the transmission 71, whereby the productivity at the time of assembly of the power unit P is improved. 22 312XP/Invention Manual (Supplement)/94-08/94112221 1267599 Further, in the V-belt type automatic transmission 容纳 housed inside the accommodating chamber 70, the portion opposed to the drive pulley device 78 is at the shift speed An outer air suction port 126 for sucking cooling air into the interior of the accommodating chamber 70 is provided on the side wall of the tank 71. However, the soundproof cover 129 is a driven pulley that is smashed with the V-belt type automatic transmission. The corresponding side of the device 7 9 covers a slightly half shape of the outer side surface of the gearbox 71, whereby the external air suction port 1 2 6 provided on the gearbox 7 1 can be ignored. The soundproof material 1 3 7 to 1 40 is disposed between the gearbox 7 1 and the soundproof cover 1 29 to improve the productivity. The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and various design changes can be made without departing from the invention as described in the claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view of a power unit and a rear wheel. Figure 2 is a cross-sectional view taken along line 2-4 of Figure 1. Fig. 3 is an enlarged view of a main part of Fig. 2.

Fig. 4 is a cross-sectional view taken along line 4 - 4 of Fig. 3. Figure 5 is a cross-sectional view taken along line 5 - 5 of Figure 3. Figure 6 is an enlarged transverse cross-sectional view of the driven pulley device. Fig. 7 is a view of the cover and the soundproof cover viewed from the arrow direction of the 7-7 line in Fig. 2. Fig. 8 is a view of the cover and the soundproof cover viewed from the arrow direction of the 8-8 line in Fig. 2. Fig. 9 is a view showing the test results of the noise occurrence condition. 23 312ΧΡ/Invention Manual (Repair)/94-08/94112221 1267599 [Explanation of main component symbols] 11 Engine main body 12 Crank axle box 1 2 a, 1 2 b Crank axle box half body 13 Cylinder block 14 Cylinder head 15 Cylinder head 16 crankshaft

1 6 a, 1 6 b crank arm 1 6 ba counterweight section 17 cylinder inner diameter 18 ball bearing 19 rolling bearing 20 sealing member 2 1 piston 23 combustion chamber 24 intake valve 25 exhaust valve 2 6 ignition plug 27 camshaft 28, 29 Intake and exhaust cams 30 Dynamic valve mechanism 31 Driven sprocket 3 2 First drive sprocket 24 312XP / Invention manual (supplement) /94-08/94112221 1267599 3 3 Ring cam chain 3 4 Chain Room 3 7 crank pin 38 connecting rod 3 8a big end 3 9 needle bearing 4 0 second drive sprocket 4 1 oil pump φ 4 2 cooling water pump 4 3 cooling sleeve 4 4 chain 45 right cover 45a support tube 4 6 hair Motor 4 7 stator 48 outer rotor

4 9 driven gear 50 one-way clutch 53 sealing member 5 4 oil chamber 5 5 oil passage 5 6 first oil passage hole 5 7 second oil passage hole 5 8 mounting recess 25 312XP / invention manual (supplement) / 94- 08/94112221 1267599 5 9 Oil transfer plate 6 0 First communication hole 6 1 Second communication hole 6 2 Third communication hole 6 3 Oil hole 6 4 Arc-shaped high surface 6 5 Middle surface 6 6 Low surface φ 6 7, 6 8 Steps 6 9 Recesses 7 0 Storage chamber 71 Gearbox 7 2 Inside box 7 3 Outer box 7 4 Gearbox 75 Gear chamber® 7 8 Drive pulley unit 9 Drive pulley unit 80 Ring V Belt 8 1 fixed pulley half (output shaft) 81a, 82a, 89a, 90a conical surface 82 movable pulley half 8 3 centrifugal weight 85 needle bearing 312XP / invention manual (supplement) /94-08/94112221 26 1267599 8 6 Ball bearing 8 7 Inner cylinder 88 Engraved cylinder 8 9 Fixed pulley half 90 Active pulley half 9 1 Torque cam mechanism 9 2 Spring seat member 9 3 Coil spring φ 94 Centrifugal clutch 95 ^ 102 Rivet 96 Clutch exterior 9 7 centrifugal weight 98 clutch spring 10 3 cam hole 1 04 cam pin 105 roller

106 Guide member 1 0 6 a Flange 10 7 Thrust bearing means 1 0 8、1 0 9 Slot 110 Ring 1 1 0 a Support part 111 Annular chamber 112 Contact hole · 27 312XP/Invention manual (Repair ) /94-08/94112221 1267599 113, 114 115^ 116 1 1 5 a fitting cylinder 115b, 116a 1 1 6 b positioning cylinder 117 recess 118 axle 119 arm φ 12 0 reduction gear 12 1 first tooth 122 intermediate shaft 123 Second tooth 124 third tooth 125 fourth tooth 1 26 external air suction 1 27 cooling air annular sealing member bearing member portion flat ring bearing portion wheel wheel wheel wheel take-off fan

128 cover 129 soundproof cover 1 2 9 a hub 1 30 screw 13 1 suction 13 2 air guide 1 33 filter 1 34~1 36 pieces into the room closed space 312XP / invention manual (supplement) / 94-08 /94 ] 12221 28 1267599 1 3 7 - 1 4 0 Soundproof material

C1 cylinder shaft line C2 shaft line E engine L straight line Μ speed change unit Ρ power unit WR rear wheel 312XP/invention manual (supplement)/94-08/94112221 29

Claims (1)

1267599 X. Patent application scope: 1. A driven pulley device inner cylinder (8 7 ) and an outer cylinder (88) of a V-belt type automatic transmission, which are slidably embedded, relative rotation about the axis and Relative movement in the axial direction; a fixed pulley half body (89) fixed to the inner cylinder (87 movable pulley half body (90), which is fixed to the outer cylinder (8) opposite to the fixed pulley half body 8) upper; a torque cam mechanism (9 1 ) acting on the two pulley halves according to a component of the relative rotational phase between the movable pulley half Φ and the fixed pulley half (8 9 ) Between the body, between the inner cylinder (87) and the outer cylinder (8 8 ); a spring seat member (92) for holding the movable pulley half and the semi-fixing pulley a position between the body (89) on the inner cylinder (87); and a coil spring (9 3) which is pressed around the outer cylinder (8 8 ), the movable pulley half (90) and the spring The seat member (92) passes the V-type from the rotational power of the drive pulley device (7 8 ) to the fixed pulley half body (8 9 Between the conical surface (8 9 a, 90 a ) opposite to the above-mentioned movable pulley, characterized by a guiding member (106), which is in the above-mentioned movable pulley half (90 for the above The inner circumference of the coil spring (93) is guided; and the thrust bearing means (107) is interposed between the spring seat and the coil spring (93). 2. Patent application number 1 Item V-belt type automatic change 312XP / invention manual (supplement) / 94-08/94112221, with: 卜, can be realized); (8 9) phase abundance (90) poor, so that the shaft is set on ( 9 0 ) is clamped to the above-mentioned sink set to I; wherein the belt (80) f body (90) comprises: at least one side (92) of the speed machine from 30 1267599 moving belt device, wherein the above thrust bearing means (1 Ο 7) A pair of bearing members (1 1 sandwiched between the coil spring (9 3 ) and the spring seat member (9 2) formed by laminating a lubricative resin. 3. As claimed in the patent application A V-belt type automatic shifting pulley device according to the first aspect, wherein the guiding member (106) is formed of grease itself. The V-belt type automatic transmission # moving pulley device of claim 2, wherein the guiding member (106) is formed of grease itself. 5. In the scope of claims 1 to 4 A driven pulley device of a V-type manual motion transmission, wherein the movable pulley half and the outer cylinder (8 8 ) and the movable pulley half (90) are disposed on a side of the coil spring The guide member (106) on the end surface of (9 3 ) is provided with a metal collar (1 1 0 ). From the self-sliding tree machine from the self-sliding tree, it is supported by the self-propelled (90) 312XP/Invention Manual (supplement)/94-08/94112221