JPS6110152A - Power transmission mechanism associated with frictional stepless speed changer - Google Patents

Abstract

PURPOSE:To simplify the power transmission mechanism while to improve the maintenancability by making the speed changer chamber, the clutch chamber and the transmission chamber liquid-tight independently. CONSTITUTION:A stepless speed changer case 20, a clutch case 31 and a transmission case 40 are provided liquid-tightly from the crank chamber R1. Then dedicated oil is fed to said cases 20, 40. Thereafter, the crank shaft 9 is coupled to the input side rotary disc 24 of a frictional stepless speed changer 22 in said case 20. The speed changer 22 is coupled through a clutch 33 in the clutch case 31 with the input shaft 37 in said case 40. The covers 21, 32, 41 can be removed for the purpose of maintenance.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of Door Operator JX) This invention relates to a power transmission mechanism that transmits rotational force to a crank shirt 1 between internal combustion engines through a friction type continuously variable transmission.

[Prior art]

BACKGROUND ART In recent years, toric drive (referred to as RL-roidal drive) friction-type continuously variable transmissions have been viewed as promising as continuously variable transmissions for use in motorcycles, automobiles, and the like. 1~-
The "toric" in rick drive means annular, and this toric drive friction type continuously variable transmission is
It includes a rotating disk on the input side and a rotating disk on the output side, both of which are provided with an annular groove. These two rotating disks face each other on the same axis, and a plurality of rollers are movably disposed between the toric vortices located on their opposing surfaces, and these rollers are in contact with each other. The structure is such that continuously variable speed is achieved depending on the diameter of the annular groove portions of the two rotating disks.

By the way, when actually constructing a power transmission mechanism that uses such a toric drive friction type continuously variable transmission as a power transmission mechanism for a vehicle, etc., a clutch J3 and a clutch J3 are included in the power transmission system. It becomes necessary to train the transmission.

Conventionally, no particular consideration has been given to the simplification of such friction-type continuously variable transmissions, clutches, and transmissions, and the arrangement of them in order to improve their maintainability.

(Problems to be Solved by the Invention) This invention aims to simplify the friction type continuously variable transmission, the clutch, and the transmission, which had not been considered in the past, and to improve their maintainability. The challenge is to realize these arrangements.

[Means for solving problems]

The power transmission mechanism having the friction type continuously variable transmission of this invention is as follows:
1" l from the crank chamber of the internal combustion engine in a liquid-tight manner.
A continuously variable transmission case and a clutch case that form two chambers,
It has a transmission case, and the chamber of the continuously variable transmission case is equipped with l-[-1 IDAL drive continuously variable transmission with oil, and the clutch case is equipped with a dry clutch, and the transmission The case chamber is equipped with oil and a transmission, and the friction type continuously variable transmission, clutch, and transmission are sequentially connected to the crankshaft of the internal combustion engine, and is characterized by an Iζ configuration.

〔Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

The present invention has been achieved as a power transmission mechanism for motorcycles, which particularly requires compactness.

In the motorcycle 1 in the figure, an engine (an internal combustion engine 2 and a power train 3) are each mounted as a unit.

The motor vehicle 1 has a scooter style, and the engine 2 and power units 1 to 3 are placed in one unit at the rear, and the unit is attached to the frame 5 via the engine 1 unit 4. The so-called unit swing system is used. Reference numerals 1 and 6 are links 1 to 71 installed on the frame 5 side, link mounts installed on the resin 2 side, and 8 a suspension.

Power l-shin 3 is engine 2's crank shirt i~
It forms a series of power transmission system that transmits the rotational force of 9 to the final wheels 1 to 11 of the rear wheels 10.

The power train 3 has three fluid-tightly independent chambers R2, R3, and R4 arranged to the right of the crank chamber R1 of the engine 2. First, the crank chamber R1 is located in the right case (hereinafter referred to as "R case").
) 12 and a left case (hereinafter referred to as the "L case") 13, and a case cover (hereinafter referred to as the "R" case) 14 is attached to the right side of the R case 12. The C engine generator 15 and the gear transmission system 17 to the scooter 16 are housed in the engine oil. The left end of the crank shirt 1 to 9 extends into the next stage chamber R2, which will be described later, and both chambers R+ are located in the extended portion.

The space between R2 is reliably sealed by a double oil seal 181. Kusonkushi located in room R2 (・
A drive gear 19 for transmitting power to a transmission, which will be described later, is disposed at the left end of the foot 9.

The chamber R2 is formed by the continuously variable transmission case 20, and this continuously variable transmission 12! in this example is formed by the continuously variable transmission case 20. L case 20G, top, [-case 13, and case cover (hereinafter referred to as "L case 7J bar") 21 attached to the ()1- side. One room R2 is a sealed structure). It is said that an I9 continuously variable transmission 22 with dedicated oil is installed inside.

The transmission 22 is a toric drive friction type continuously variable transmission as described above, and a rotating disk 2 at the C input end is mounted on one shaft 23.
/I and the rotating disk 25 on the output side face each other, and a toric surface-shaped phase of 248° 25a is installed on the n opposite faces of these two rotating disks 24.25. A plurality of rods 026 are disposed movably between n. The right end of the shaft 23 is located within R, and the left end thereof is located within the next stage chamber R3, which will be described later. The rotating disk 25 on the output side is fixedly supported.

Further, a driven gear 27 is rotatably supported on the shaft 16 and is adjacent to the rotating disk 24 on the input side and meshes with a driving gear 719 that is provided in front of the driver. l-
It is connected to the rotating disk 24 via an i-ink cam 28 and a loading rod.

The driven gear 27 has a larger diameter than the drive gear ψ19,
This constitutes a deceleration mechanism that decelerates the rotation of the crankshaft 9 and transmits it to the rotating disk 24. A drive block 30 is attached to the left end of the crankshaft 9 located in a chamber R3 to be described later.

The chamber R3 is formed by the rear case 3'I, and in this example, the l case 13, the l case cover 21, and the mounting number - on the i side of the l case cover 21 are attached.
It is composed of a night cover (hereinafter referred to as "[1 night cover]") 32.

The chamber R3 is a dry chamber, and a dry clutch 33 is provided inside the chamber R3. This gangway-33
[Well, when the drive rate 34 reaches a certain set rotation or higher, the clutch L1 of this dry play i~34 connects with the clutch outer ~36, and the rotation of the drive plate 34 reaches the dry 1st rotation. It is said to be a centrifugal clutch that is transmitted to 37. Drive play 1 and 3
A driven sprocket 38 is attached to the drive shaft 4, and the driven sprocket 38 is connected to the drive sprocket 11-1-30 brought out earlier via a chain 39. , is located in room R4.

'ff1RdIJ: It is formed by the mission case 40, and in this example, it is formed by the [-case 13 and the mission cover 4 attached to the right side of this L booth 13.
1. The chamber R4 has a hermetically sealed structure, and there are t, l and l-transmissions 42 inside.
is feared along with mission oil.

The transmission 42 is a dry 1 shisenoto 37 etc.
Rear wheel 10 is installed tJ No'7 Fuinorushi II lift 1
1 is connected by a plurality of gears A7, 43 is a counter sea 1 knot located between both shafts 37 and 11, 44 is a counter gear knot, and 45L is a horn inargi) 1. .

In this example, J3 (J, these chambers R+, R・, R3°R
Shil in 4? The feet 9.23, 37, and 43.11 are all parallel. This is tie 17 behind engine 2.
This is the procedure taken to place the .

A series of power transmission mechanisms incorporated in the motorcycle as described above reduce the rotation of the crankshaft t.) t-9 by one step using the gear 19. Tell it to board 24. Due to this reduction)*, the 1-herk fluctuation in the crank system is alleviated. The transmission 22 responds to the amount of displacement of the rollers 26! ,: The rotation of the rotating disk 24 on the input side is transmitted to the rotating disk 25 on the output side with a speed ratio. In this transmission 22, the 0 port 2 is in the state shown in FIG.
The part of 48°25a is the same as n (if it is in the position of ¥,
The rotation is transmitted at a speed of +utr1, and the 0 mouth 2 is tilted towards the 11 angle side (the toric surface of -1j that it touches is the full 24
When the diameter of the part 8 becomes smaller than the diameter of the other annular groove 25a, rotation is transmitted at a reduction ratio according to the ratio of those diameters, and Tl a 2 G becomes Is it touching when you lean towards the other side? When the diameter of the toric groove 24a of one B is smaller than the diameter of the other toric groove 25a, the speed increasing ratio is set according to the ratio of those diameters. Convey rotation. In this way, the rotational force is transmitted to the rotating disk 25 on the output horn side, and the rotational force is then transferred to the clutch 33.
It is transmitted to the rear wheel 10 via the locking machine 1/12.

By the way, the chamber R2 where the transmission 22 is provided is referred to as the crank chamber R+.
The use of a closed chamber independent from the air conditioner is extremely advantageous in the following points. In other words, the toroidal drive l! +
Since the Type 1 continuously variable transmission 22 uses friction conduction, a special IT rail that can withstand high surface pressure is essential.
It is important to control the formation of an oil film caused by the oil. In this respect, by liquid-tightly isolating chamber R3 from other chambers, it is possible to avoid deterioration of f/ performance due to contamination of other oils, and use of expensive oil for the transmission 22. By reducing the amount, it will also be advantageous in terms of economic benefits.

Further, lζ chains 39 installed at the front and rear of the transmission 22 effectively act on the transmission 22.

q, then set up the main stand of the motorcycle l 1.
With the rear wheel 10 lifted off the ground, the engine 2
Also, if the power train 3 is sped up and idle and then the stand is raised to the Z, a sudden recoil of 1 herk may occur when the tie V touches the ground, and this may be input to the power train 3. However, at this time, due to the Il impact action of the chain 39, etc., the defective slip in J5 of the transmission 22 is suppressed to a minimum, which is advantageous in terms of the durability of the transmission 22. Note that the same effect can be achieved even if a belt is provided instead of the chain 39.

Further, the fact that the chamber R3 is a dry chamber and the clap 33 provided therein C1 is a dry type is advantageous in the following respects. That is, when the clutch system is used dry, the lining having a high coefficient μ of 191 is given by 1, and as a result, it can be constructed with a smaller size.

Also, on the main stand for this series of power transmission mechanisms, by removing the beam cover 32 for the chain 39 and clap 33, the Mitsubishi 1 knob 41 can be removed for the chain 39 and the clamp 33. This makes it easier. Regarding the transmission 22, the side B-bar 32 must be removed and the mustard case/J-bar 21 removed, but since the inside of the side cover 32 is dry and the transmission system remains the same, Contamination with other oils will not occur. J.

In addition, having all the axes of the transmission system parallel has the advantage that parts processing and assembly numbers can be carried out from the same direction into the cylinder.

In the above embodiment, as shown in FIG. 1, the AC generator 15 and the starter 16 are arranged on the right side of the engine 2, and the power train 3 is arranged on the left side, but they may be arranged in the opposite direction. . Further, in relation to the form of the L resin 2 and the manner in which it is mounted, it is optional to set the axis of the transmission system in the vertical direction or in the diagonal direction.

〔Effect of the invention〕

[As described in detail below, the power transmission mechanism having a friction type continuously variable transmission according to the present invention includes a toric drive 1-1 type continuously variable transmission, a clutch and a transmission provided in connection therewith. are arranged in three chambers that are fluid-tightly independent from the crank chamber of the engine 1, and dedicated oil is injected into the chambers of the continuously variable transmission and the engine 1, respectively. - The chamber and clutch chamber are completely dry without injecting oil, so the configuration uses a dry type clutch. It is possible to simplify the power transmission mechanism itself by making the continuously variable transmission, Clara F-1, and transmission unitary, and to achieve high maintenance while reducing the size of the dry clutch. .

4 Explanation of the drawings (11) Drawing 1 shows an embodiment of the present invention, and Fig. 1 is a sectional view of a power train in a seven-wheel automatic vehicle incorporating a power transmission mechanism according to the present invention. , FIG. 2 is a partially cutaway side view of the power train shown in FIG. 1, and FIG. 3 is a schematic side view of a motorcycle I equipped with the power train shown in FIG. 1.

2...Engine, 9...Crankshaft] l-120...Continuously variable speed (number of cases, 22.
...Friction type continuously variable transmission, 23...Axle, 2
/I...Rotating disk on the input side, 24a...
・An annular groove, 25...Rotating disk on the output side,
25a...Trusted groove, 26...]
1", 31...Clutch case, 33...
... Clutch, 40 ... Mitsushi I Goose, 4
2...Transmission.

Claims (1)

[Claims] Two rotating disks on the input side and output side are coaxially faced, and multiple rollers can be displaced between the annular grooves provided on the mutually opposing surfaces of these two rotating disks. The friction type continuously variable transmission has a friction type continuously variable transmission that performs continuously variable speed according to the ratio of the diameters of the annular groove portions of the two rotating disks that are arranged and in contact with the plurality of rollers. A power transmission mechanism that transmits the rotational force of a crankshaft of an internal combustion engine through a stepped transmission, the continuously variable transmission case comprising three chambers that are fluid-tightly independent from the crank chamber of the internal combustion engine, and a clutch case. , has a transmission case, the friction type continuously variable transmission is provided together with oil in a chamber of the continuously variable transmission case, and a rotating disk on the input side of the friction type continuously variable transmission is connected to the crankshaft. A dry clutch is provided in the chamber of the clutch case, and the input shaft of the clutch is connected to the rotating disk on the output side of the friction type continuously variable transmission, and the chamber of the transmission case is provided with oil and a transmission. A power transmission mechanism having a friction type continuously variable transmission, characterized in that an input shaft of the transmission is connected to an output shaft of the clutch, and rotational force is outputted from the output shaft of the transmission to the outside.