JP3296290B2 - Temporary assembling apparatus for toroidal type continuously variable transmission and assembling method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a temporary assembly which is used when assembling a toroidal type continuously variable transmission, for example, when inserting a shaft member called a torque transmission shaft serving as a rotation center of an input disk or an output disk. The present invention relates to an apparatus and an assembling method thereof.

[0002]

2. Description of the Related Art A conventional toroidal-type continuously variable transmission is disclosed, for example, in Japanese Patent Application Laid-Open No. 2-163549. This toroidal-type continuously variable transmission has an input disk rotatable integrally with the torque transmission shaft, an output disk rotatable around the torque transmission shaft, and a toroidal groove formed by the input disk and the output disk. A friction roller is provided so as to make frictional contact with both disks, and a thrust cam device for applying a pressing force corresponding to an input torque between the input disk and the output disk. Here, the shaft member constituting the torque transmission shaft is disposed so as to be inserted into an input disk or an output disk. Further, the thrust cam device is disposed on the back side opposite to the friction roller contact surface of the input disk. And
The thrust cam device includes an output cam formed on the back surface of the input disk, an input cam formed of a cam surface facing the output cam, to which a torque is input, and disposed and held between the input cam and the output cam. And a cam roller rotatably supported by the container. Further, a preload generating member such as a disc spring that acts on the input cam and the output cam to exert a force in a direction to separate the two cams from each other is interposed.

In this type of toroidal-type continuously variable transmission, the thrust cam device must be maintained in an appropriate state, for example, in the assembly process. Accordingly, the present applicant has previously proposed a toroidal-type continuously variable transmission described in Japanese Patent Application Laid-Open No. 4-351361. This toroidal-type continuously variable transmission has a thrust cam device from the input cam to the output cam in a state where the input cam, the output cam, and the cam roller are aligned with the generated pressing force in a minimum state and the preload generating member is compressed. It has a temporary assembly mechanism for restraining. More specifically, the provisional assembly mechanism includes a through hole formed in the input cam and the retainer, a screw hole formed on the output cam, that is, a screw hole formed on the back side of the input disk, and the screw hole formed through the through hole. The bolt is inserted into each through hole and the screw hole is inserted in a state where the pressing force generated between the input cam, the output cam, and the cam roller is minimized. By screwing and tightening, the preload generating member such as the disc spring can be compressed. In the toroidal-type continuously variable transmission provided with the temporary assembling mechanism, at least the thrust cam device can be held in an appropriate state, so that the assembling process can be simplified by that much.

[0004]

By the way, the shaft member constituting the above-described torque transmission shaft is inserted and assembled in the thrust cam device. More specifically, the output cam is formed on the back side of the input disk, and the input disk rotates integrally with a shaft member constituting the torque transmission shaft. Must be connected via, for example, ball splines,
Therefore, the shaft member must be inserted into the inner hole of the input disk. The shaft member constituting the torque transmission shaft is inserted in the axial direction from the input cam side toward the output cam, that is, toward the input disk side, but is inserted by a ball bearing between the input cam and the input cam. Movement in the direction is regulated.

Therefore, in the actual assembling process, it is desirable that the thrust cam device and the shaft member constituting the torque transmission shaft are integrally restrained. However, in the above-described temporary assembly mechanism, the thrust cam device is connected to the thrust cam. There is a problem that it cannot be positioned in the axial direction while being inserted into the device, and the assembling process cannot be facilitated by that much.

The present invention has been developed in view of these problems. By temporarily assembling a shaft member such as a torque transmission shaft into a thrust cam device, it can be positioned in the axial direction. An object of the present invention is to provide a temporary assembling apparatus for a toroidal-type continuously variable transmission and an assembling method thereof, which can facilitate the assembling process.

[0007]

In order to solve the above-mentioned problems, a temporary assembling apparatus for a toroidal type continuously variable transmission according to a first aspect of the present invention comprises a rotatable input disk, and a rotatable input disk. A rotatable output disk disposed concentrically and facing, a friction roller disposed in frictional contact with both disks in a toroidal groove formed by the input disk and the output disk; A thrust cam device that applies a pressing force corresponding to an input torque between the input disk and the output disk, and a shaft member disposed at least in a state of being inserted into the input disk and the output disk, wherein the thrust cam device includes: An input cam for inputting torque, an output cam for outputting torque, and a cam disposed between the input cam and the output cam and rotatably supported by a retainer. It includes a roller, and a preload force generating member which acts the direction of the force of separating from each other the two cams are disposed between the input cam and output cam, the input disk
And two output cavities in combination with the output disk
In the toroidal type continuously variable transmission which constitutes the input mosquito
And the output cam
And the screw hole formed through the through hole and the screw hole.
Bolts and the bolts secure the thrust cam device.
And a base member that can be
And the shaft member is inserted into the thrust cam device.
And a propulsion member for propulsion in the direction .

According to a second aspect of the present invention, there is provided a temporary assembling apparatus for a toroidal-type continuously variable transmission, wherein a rotatable input disk and a rotatable rotatably disposed so as to face the input disk concentrically. An output disk, a friction roller disposed in a toroidal groove formed by the input disk and the output disk so as to make frictional contact with both disks, and a pressing force corresponding to an input torque to the input disk and the output. A thrust cam device acting between the disks, and a shaft member disposed at least in a state of being inserted through the input disk and the output disk, wherein the thrust cam device outputs an input cam to which torque is input, and outputs torque. An output cam, a cam roller disposed between the input cam and the output cam and rotatably supported by a retainer; A toroidal-type continuously variable transmission, comprising: a preload generating member that is disposed at a position and acts to force the two cams away from each other; and a combination of two sets of the input disk and the output disk forms two cavities. In which the pressing force generated by the thrust cam device is minimized.
A pre-assembled mechanism in a compressed state preload force generating member capable of restraining the thrust cam device from the input cam to the output cam with the input cam of the thrust cam device state, the output cam and cam roller aligning position, the temporary A shaft member positioning mechanism capable of positioning the shaft member in the axial direction while being fixed to the assembling mechanism, wherein the temporary assembling mechanism includes a through hole formed in the input cam and the retainer; and a through hole formed in the output cam. And a bolt screwed into the screw hole through the through-hole, the shaft member positioning mechanism is fixed to a thrust cam device by a bolt of the temporary assembly mechanism, and the base And a propulsion member which is detachably attached to the member and which protrudes the shaft member in a direction of insertion into the thrust cam device.

Further, the provisional assembling apparatus for a toroidal type continuously variable transmission according to claim 3 of the present invention is the above-described claim 1 or 2.
In the invention, with the front SL base member is fixed to the thrust cam device by a bolt of the temporary assembling mechanism, when removing the propulsion member from the base member, such that one end portion in the axial direction of the shaft member appears It is characterized by comprising.

The method of assembling a toroidal-type continuously variable transmission according to a fourth aspect of the present invention is the same as that of the first to third aspects .
In a state where the thrust cam device is restrained by any of the temporary assembling devices and the shaft member is positioned in the axial direction, the shaft member is inserted into the input disk and the output disk, and then the shaft member positioning mechanism is propelled. The member is removed from the base member, one end in the axial direction of the shaft member is fixed, and a nut is screwed and fastened to a male screw portion formed at the other end in the axial direction of the shaft member. It is characterized by the following.

[0011]

According to the temporary assembling apparatus of the toroidal type continuously variable transmission according to the first aspect of the present invention, the propulsion member is provided.
To the base member and fix both together.
In this state, pass the bolt through the base member and insert it through the input cam.
Insert the through-hole of the cage through the through-hole to form the output cam.
Screwed into the screw hole, and the thrust cam device
The base member is held while being restrained in a predetermined state.
The propulsion member is fixed to the input cam and the
To the insertion direction, press it against the input cam side,
Since the shaft member is positioned in the axial direction,
All the constituent members are restrained and held in that state.

Further, according to the temporary assembling apparatus of the toroidal type continuously variable transmission according to claim 2 of the present invention, the thrust cam is provided.
When the thrust force generated by the device is
Input cam arm device, the temporary assembly output cam and cam roller
Thereby enabling restraining the thrust cam device from the input cam to the output cam in a compressed state preload force generating member with aligning the stand mechanism, the axis of the shaft member in a state of fixing the shaft member positioning mechanism to pre-assembled mechanism Direction, the thrust cam device can be restrained and the shaft member can be positioned in the axial direction at the same time, and these can be integrally restrained, thereby facilitating the assembly process. Can be. Further, the shaft member positioning mechanism is fixed to the thrust cam device by a bolt of the temporary assembly mechanism and is configured to push the shaft member in a direction of insertion into the thrust cam device. Only by fixing the shaft member positioning mechanism to the thrust cam device, the shaft member is propelled in the direction of insertion into the thrust cam device, and thereby the movement of the shaft member in the insertion direction is regulated by the thrust cam device. It is possible to position the shaft member reliably and easily.

Further, according to the provisional assembling apparatus of the toroidal type continuously variable transmission according to the third aspect of the present invention, the base member of the shaft member positioning mechanism is fixed to the thrust cam device by the bolt of the temporary assembly mechanism. In this state, when the propulsion member is removed from the base member, one end in the axial direction of the shaft member is configured to appear, so that the shaft member is positioned in the axial direction while the thrust cam device is restrained. Becomes possible.

Further, according to the assembling method of the toroidal type continuously variable transmission according to a fourth aspect of the present invention, claim 1乃
While positioning the constraint was and the shaft member of the thrust cam device in the axial direction by the pre-assembled apparatus as claimed in Itaru 3, after inserting the shaft member to the entering force and output side disks of said shaft member positioning mechanism Removing the propulsion member from the base member, fixing one end of the shaft member in the axial direction, and screwing a nut to a male screw portion formed at the other end in the axial direction of the shaft member. Because of the tightening, the shaft member can be positioned in the axial direction while the thrust cam device is restrained.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a toroidal type continuously variable transmission according to an embodiment of the present invention;

First, a schematic configuration of the toroidal-type continuously variable transmission according to the present embodiment will be briefly described in order from the input side to the output side with reference to FIG. The rotational force of an engine (not shown) is input to an input shaft 2 via a torque converter 4 in a transmission case 1. This input shaft 2
On the right side of the drawing, a torque transmission shaft (here, simply referred to as a rotation shaft) 3 called the CVT shaft is coaxially arranged. An oil pump 5 is mounted on the input shaft 2, and a forward clutch mechanism for switching an input rotation direction to the rotary shaft 3 by switching a fixed element of a planetary gear mechanism 8 is provided on the right side of the oil pump 5 in the drawing. A forward / reverse switching mechanism 9 provided with a reverse brake mechanism 6 and a reverse brake mechanism 7 is provided. Also, the first and second toroidal transmission mechanisms 1 forming two cavities, that is, grooves, are provided on the rotating shaft 3.
0 and 11 are arranged axially separated from each other.

A sun gear 13 rotatably supported by the input shaft 2 via a needle bearing 12 and constituting the planetary gear mechanism 8 of the forward / reverse switching mechanism 9 between the input shaft 2 and the rotary shaft 3; A loading cam 14 engaged with a claw portion 13a formed on the sun gear 13 and rotatably supported by the rotating shaft 3;
Input disk 1 connected to the rotary shaft 3 via an engagement roller 15 and supported on the rotating shaft 3 via a ball spline 16.
7 are interposed. The engaging roller 15 is rotatably held by a holder 41. Therefore, the torque transmitted from the engine to the input shaft 2 is transmitted to the loading cam 14, the engagement roller 15, the input disk 17, and the ball spline 16 from the claw portion 13a of the sun gear 13 via the forward / reverse switching mechanism 9. The power is transmitted to the rotating shaft 13 via the control unit.

Also, the loading cam (input cam)
The cam surfaces facing each other are formed on the rear surface of the input disk (output cam) 17, that is, on the left side of the drawing. This cam surface is, for example, as described in JP-A-4-351361,
In the state where there is no input torque, the grooves face each other when there is no input torque, and the engaging roller (cam roller) 15 falls between the grooves. When a torque is input from this state, the rotational force causes the loading cam 14 as an input cam and the input disk 17 as an output cam to be out of phase, and the engaging rollers 15 move to the peaks of the respective V-shaped grooves. As a result, an axial thrust is generated. That is,
When the engaging roller 15 moves along the leads on these cam surfaces, a thrust force in the axial direction proportional to the input torque, that is, a thrust force is generated. Further, between the loading cam 14 as the input cam and the input disk 17 as the output cam, a disc spring 42 for applying a force in a direction for separating the two and applying a preload is interposed. The disc spring 42 constitutes a preload generating member . What slave, the loading cam 14, the input disc 17, the engaging roller 15, the retainer 41, the disc spring 42 constitutes the thrust cam device.

For convenience of explanation, the first and second toroidal transmission mechanisms 10 and 11 will be described first. In the first toroidal transmission mechanism 10, a toroidal surface 17a is formed on a surface away from the engagement roller 15. Input disk 17 described above
And a toroidal surface 18a on the opposite surface of the input disk 17.
Are formed, the first toroidal surface is constituted by two toroidal surfaces, the output disk 18 rotatably supported by the rotating shaft 3, the toroidal surface 17 a of the input disk 17 and the toroidal surface 18 a of the output disk 18. A power roller (friction roller) 29 is provided so as to be tiltable with respect to the formed groove, that is, the cavity. The power roller 29 is tiltably supported by a support mechanism called a trunnion. By operating the trunnion with a hydraulic drive mechanism (not shown), the power roller 29, the input disk 17 and the output disk 18 By changing the respective radial contact positions, that is, the contact radii, the rotational speed ratio between the input disk 17 and the output disk 18, that is, the gear ratio can be continuously changed.

The second toroidal transmission mechanism 11
Has an input disk 19, an output disk 20, a power roller (friction roller) 30, a support mechanism, and a hydraulic drive mechanism as in the first toroidal transmission mechanism 10, but is externally fitted to the rotating shaft 3 via a ball spline 21. The input disk 19 is disposed on the side far from the first toroidal transmission mechanism 10 and the output disk 20 is connected to the first toroidal transmission mechanism 10.
It is arranged on the side close to the toroidal transmission mechanism 10. That is, the first toroidal transmission mechanism 10 and the second toroidal transmission mechanism 11 are configured to be line-symmetric in the drawing. A roller bearing 38 is provided between the output disk 18 of the first toroidal transmission mechanism 10 and the rotary shaft 3, and a roller bearing 39 is provided between the output disk 20 of the second toroidal transmission mechanism 11 and the rotary shaft 3. It is interposed.

The output disks 18, 2 opposed to each other
An output gear 22 is disposed between the rear surfaces of the output discs 22. A cylindrical shaft portion 18b, 20b protruding in the axial direction from both ends of the center of the output gear 22 is provided inside each of the output disks 18, 20. Splined with them. The output gear 22 is rotatably supported by a gear housing 23 fixed to the inner peripheral wall of the transmission case 1 via a bearing 24. The output gear 22 meshes with a counter gear 25, and the counter gear 25 is rotatably supported by the gear housing 23 via a bearing 26. One end of a counter shaft 27 is spline-coupled to the center of the counter gear 25, and the other end of the counter shaft 27 is rotatably supported by the transmission case 1 via a bearing 32. Are designed to rotate together. Therefore, the torque transmitted from the engine to the rotating shaft 3 is applied to the first and second toroidal transmission mechanisms 10,
The output disks 18, 19 of each toroidal transmission mechanism 10, 11 are distributed to the input disks 17, 19 of the toroidal transmission mechanism 10, 11 at a predetermined speed ratio by the tilting operation of the power rollers 29, 30 described above.
After being transmitted to the output gear 20, it is synthesized by the output gear 22 and transmitted to the output shaft 33 via the counter gear 25, the counter shaft 27 and the gear train 28 in that order.

Next, FIG. 2 shows a state in which the toroidal type continuously variable transmission of this embodiment is being assembled. This state is
The first and second toroidal transmission mechanisms 10 and 11 are assembled around the rotation shaft 3, and the counter gear 25 is also housed in the gear housing 23. Further, in the present embodiment, the upper link mechanism 3 for moving the power rollers 29, 30 of the first and second toroidal transmission mechanisms 10, 11 in the opposite directions toward and away from the paper surface.
4, 36 and the lower link mechanisms 35, 37 are also assembled. A supporting mechanism for supporting the above-mentioned power rollers 29, 30 and a driving mechanism for driving them are also assembled. In this state, the torque converter 4, the forward / reverse switching mechanism 9, the counter shaft 2
7 and the gear train 28 are not assembled.

Here, the assembling procedure up to this state will be described. For example, the output gear 22 is rotated via a bearing 24, and the counter gear 25 is rotated via a bearing 26, respectively. The output disk 1 of the first and second toroidal transmission mechanisms 10 and 11 is mounted on the cylindrical housings 18b and 20b projecting from the output gear 22 so as to be freely mounted.
8 and 20 are spline-coupled, and in this state, the gear housing 23 is bolt-coupled to the transmission case 1. In the inner holes of the output disks 18 and 20,
Roller bearings 38 and 39 for rotatingly supporting the rotating shaft 3 are provided in advance. Thereafter, the upper link mechanisms 34 and 36, the lower link mechanisms 35 and 37, the power rollers 29 and 30 of the first and second toroidal transmission mechanisms 10 and 11, and the supporting mechanisms and driving mechanisms thereof are assembled.

On the other hand, the input shaft 17 of the first toroidal transmission mechanism 10, the ball of the ball spline 16, the engaging roller 15, the loading cam 1
2, the inner hole of the output disk 18 of the first toroidal transmission mechanism 10, the inner hole of the cylindrical shaft portions 18b and 20b of the output gear 22, and the second
The output disk 20 of the toroidal transmission mechanism 11 is inserted in the order of the inner holes thereof so as to be inserted therethrough. Then, the ball spline 21 is projected from its protruding end, that is, the right end in the figure.
, The input disk 19 of the second toroidal transmission mechanism 11 and the like, and finally, a nut 40 is screwed into a male screw portion 3a formed at the right end of the rotating shaft 3 and tightened to form each component. Position and fix.

Here, as described above, the rotating shaft 3 is inserted from the left to the right in the drawing of FIG. 2, and after the input disk 19 and the like of the second toroidal transmission mechanism 11 are assembled, the disc spring is 43, a wrench is used on a hexagonal surface of the large diameter portion 3b described later, and a nut 40 is screwed into the male screw portion 3a and tightened. Due to the thrust of the screw, a pressing force is generated between the input disks 17, 19, the output disks 18, 20 of the first and second toroidal transmission mechanisms 10, 11, and the power rollers 29, 30, and both of these pressing forces are generated. It generates frictional force that transmits torque between them. Therefore, while the tightening torque of the nut 40 is an important management item, the thrust cam device must be maintained in a predetermined state during that time. Specifically, as described above, the groove on the cam surface of the loading cam 14 as the input cam and the groove on the cam surface of the input disk 17 of the first toroidal transmission mechanism 10 as the output cam are opposed to each other, and between the grooves. When the engagement rollers 15 fall, the pressing force generated by them, that is, the thrust to the toroidal transmission mechanisms 10 and 11 must be restrained and held in a state where the thrust is minimized. At the same time, the magnitude of the preload by the disc spring 42 interposed between the loading cam 14 as the input cam and the input disk 17 of the first toroidal transmission mechanism 10 as the output cam is also kept constant. There must be.

From such a demand, Japanese Patent Application Laid-Open No. 4-35
In the publication No. 1361, a through hole is formed in the loading cam 14 and the retainer 41, and a screw hole is formed on the back side of the input disk 17 of the first toroidal transmission mechanism 10, and a bolt is inserted from the front of the loading cam 14. By inserting and screwing into the screw hole of the input disk 17, the temporary assembly of the thrust cam device described above becomes possible. Therefore, the through holes of the loading cam 14 and the retainer 41 and the screw holes and bolts of the input disk 17 constitute a temporary assembly mechanism.

However, as is apparent from the above description of the assembling process, a thrust cam device including the input disk 17 of the first toroidal speed change mechanism 10 is previously mounted on the rotating shaft 3 and, in that state, the thrust cam device is mounted. The rotating shaft 3 must be inserted. Here, a large diameter portion 3b is formed at the left end of the rotating shaft 3 in the figure, and a ball bearing 4 is provided between the large diameter portion 3b and the loading cam 14 of the thrust cam device.
4 are interposed. That is, in the axial direction of the rotating shaft 3,
Direction of inserting the rotating shaft 3 into the thrust cam device (rightward in FIG. 2)
Direction), it is regulated that the large diameter portion 3b abuts against the ball bearing 44 and the loading cam 14 and proceeds further . However, the opposite direction (left direction in FIG. 2) is limited.
This is a so-called free state, and their relative positional relationship is deviated, so that the assembling process becomes troublesome.

Therefore, in the present embodiment, the rotary shaft 3 and the thrust cam device are connected to the output disk by using the bolt 61 of the temporary assembly mechanism 60 and the positioning mechanism 50 shown in FIGS. And hold it in a fixed state suitable for insertion into the like. The positioning mechanism 50 includes two members 5
1 and 52 and bolts 53 connecting them.

The bolt 6 of the temporary assembly mechanism 60
The base member 51 fixed to the loading cam 14 at 1
Consists abutting the ring portion 51a to the annular flat portion 14a formed on the loading cam 14, facing the two prior Kinuki <br/> throughbore 62 formed in the loading cam 14 A through hole 54 is formed in each part. Further, when the base member 51 is attached to the loading cam 14 through the bolt 61 of the temporary assembling mechanism 60 through the through hole 54, a position where the base member 51 fits into the groove 14 c of the claw portion 14 b formed in the loading cam 14, from 90 ° phase shift portion from forming part of the through hole 5 4 in the form, the ring portion 51a of the base member 51
Two connecting bases 51b are protruded toward the inside in the diametrical direction, and screw holes 55 are formed therein one by one.

On the other hand, the propulsion member 52 attached to the base member 51 is composed of a cylindrical portion 52a having a size abutting on the large-diameter portion 3b of the rotary shaft 3, and has two connecting arm portions directed outward in the diameter direction. 52b is protruded, and there is a notch 5
6 are formed one by one.

Therefore, the thrust cam device is assembled, and the ball bearing 44 is inserted into the inner hole of the loading cam 14.
, And the rotary shaft 3 containing the ball of the ball spline 16 is inserted thereinto. On the other hand, the connecting arm 52b of the propulsion member 52 is overlapped with the connecting base 51b of the base member 51, and the bolt 53 is screwed into the screw hole 55 of the connecting base 51b through the notch 56 of the connecting arm 52b. Tighten and fix both together. In this state, the bolt 61 of the temporary assembling mechanism 60 is passed through the through hole 54 of the base member 51, and is further inserted through the through hole 62 of the loading cam 14 into the through hole 63 of the retainer 41, and the first toroidal speed change is performed. The mechanism 10 is screwed into a screw hole 64 formed on the back surface of the input disk 17 and fastened. As a result, the thrust cam device is restrained and held in the predetermined state, the base member 51 is fixed to the loading cam 14, and at the same time, the cylindrical portion 52a of the propulsion member 52 is connected to the large-diameter portion 3b of the rotary shaft 3. It is propelled in the direction of insertion of the rotating shaft 3, and the ball bearing 44 is inserted between the rotating shaft 3 and the loading cam 14.
, And the rotary shaft 3 is positioned in the axial direction, so that all the constituent members are restrained and held in that state.

In this state, the rotating shaft 3 is connected to the inner hole of the output disk 18 of the first toroidal transmission mechanism 10 and the output gear 2.
The inner holes of the second cylindrical shaft portions 18b and 20b and the inner hole of the output disk 20 of the second toroidal transmission mechanism 11 are inserted in this order in such a manner as to be inserted therethrough. Next, the input disk 19 and the like of the second toroidal transmission mechanism 11 are assembled to the right end of the rotating shaft 3 as described above, and when the disc spring 43 is put thereon, the nut 40 is lightly put on the male screw portion 3a. Screw together. Then, the bolt 53 connecting the propulsion member 52 and the base member 51 is loosened, and the propulsion member 52 is connected to the connection arm 52b.
Is rotated in the direction opposite to the opening direction of the notch 56. Then, the connecting arm 52b of the propulsion member 52 is disengaged from the seat surface of the head of the bolt 53.
Is removed from the base member 51.

When the propulsion member 52 is removed from the base member 51 in this manner, the base member 51 is still fixed to the loading cam 14, that is, the thrust cam device is restrained and held in the above-mentioned fixed state, and A hexagonal surface of the large diameter portion 3b of the rotating shaft 3 appears inside the ring-shaped base member 51. Then, in a state where the rotation of the rotary shaft 3 is fixed by applying a wrench to the hexagonal surface of the large-diameter portion 3b of the rotary shaft 3, the nut 40 is fully tightened and tightened with a specified torque. When all the constituent members are fixed in this way, the bolts 61 of the temporary assembly mechanism 60 fixing the base member 51 are removed, and at the same time, the positioning mechanism 50 together with the base member 51 is removed.

As described above, the temporary assembly mechanism 60 of the present embodiment
In the temporary assembling device including the shaft member positioning mechanism 50 and the assembling method, the rotating shaft 3 as the shaft member and the thrust cam device can be restrained and held in a fixed state. The assembling process of inserting into an output disk or the like can be facilitated.

When the shaft member positioning mechanism 50 is fixed to the thrust cam device by the bolt 61 of the temporary assembly mechanism 60, the rotating shaft 3 is automatically propelled in the direction of insertion into the thrust cam device, and the thrust cam device causes Since the movement of the rotating shaft 3 in the insertion direction is restricted, the rotating shaft 3 can be reliably and easily positioned.

In the state where the base member 51 of the shaft member positioning mechanism 50 is fixed to the thrust cam device by the bolt 61 of the temporary assembly mechanism 60, the propulsion member 52 is connected to the base member 5
When removed from 1, a large-diameter portion 3b of the rotating shaft 3, that is, a hexagonal surface at one end in the axial direction appears, so that a wrench is applied to this hexagonal surface while the thrust cam device is restrained. As a result, the external thread 3a of the rotating shaft 3
The nut 40 screwed into the nut can be fully tightened, and each constituent member including the rotating shaft 3 can be positioned in the axial direction.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an example of a toroidal type continuously variable transmission.

FIG. 2 is a longitudinal sectional view showing a state in which the toroidal type continuously variable transmission shown in FIG. 1 is being assembled.

FIG. 3 is an explanatory view of a temporary assembling device used when assembling the rotating shaft of FIG. 2;

FIG. 4 is a side view showing a state where the temporary assembling apparatus of FIG. 3 is attached.

FIG. 5 is a sectional view taken along line Z ₃ -Z ₃ of FIG. 4;

[Explanation of symbols]

 1 is a transmission case 2 is an input shaft 3 is a rotating shaft (shaft member) 3a is a male screw portion 3b is a large diameter portion 4 is a torque converter 9 is a forward / reverse switching mechanism 10 is a first toroidal transmission mechanism 11 is a second toroidal transmission mechanism 14 is a loading cam 15 is an engagement roller 16 is a ball spline 17 is an input disk 18 is an output disk 19 is an input disk 20 is an output disk 21 is a ball spline 22 is an output gear 23 is a gear housing 29 is a power roller 30 is a power roller 38 Is a roller bearing 39 is a roller bearing 40 is a nut 41 is a retainer 42 is a disc spring 43 is a disc spring 44 is a ball bearing 50 is a positioning mechanism 51 is a base member 52 is a propulsion member 53 is a bolt 54 is a through hole 55 is a screw hole 56. Is a notch 60 is a temporary assembly mechanism 61 is a bolt 62 is a through hole 63 Through hole 64 is a screw hole

Claims (4)

(57) [Claims] A rotatable input disk, a rotatable output disk disposed concentrically facing the input disk, and a toroidal groove formed by the input disk and the output disk. A friction roller disposed in frictional contact with both disks, a thrust cam device for applying a pressing force corresponding to an input torque between the input disk and the output disk, and a thrust cam device inserted at least through the input disk and the output disk. A thrust cam device, wherein the thrust cam device is provided with an input cam to which a torque is input, an output cam to output a torque, and a rotation member which is disposed between the input cam and the output cam and rotated by a retainer. A pre-pressure generating member disposed between the input cam and the output cam, the pre-pressure generating member being disposed between the input cam and the output cam, and for exerting a force in a direction to separate the two cams from each other; A toroidal-type continuously variable transmission having two cavities formed by combining two sets of the input disk and the output disk, wherein a through hole formed in the input cam and the retainer; and the output cam A bolt screwed into the screw hole through the through hole; a base member fixed to the thrust cam device by the bolt; and a shaft member detachably attached to the base member and the shaft member. And a propulsion member for propelling the thrust cam device in a direction of insertion into the thrust cam device. 2. A rotatable input disk, a rotatable output disk disposed concentrically facing the input disk, and a toroidal groove formed by the input disk and the output disk. A friction roller disposed in frictional contact with both disks, a thrust cam device for applying a pressing force corresponding to an input torque between the input disk and the output disk, and a thrust cam device inserted at least through the input disk and the output disk. A thrust cam device, wherein the thrust cam device is provided with an input cam to which a torque is input, an output cam to output a torque, and a rotation member which is disposed between the input cam and the output cam and rotated by a retainer. A pre-pressure generating member disposed between the input cam and the output cam, the pre-pressure generating member being disposed between the input cam and the output cam, and for exerting a force in a direction to separate the two cams from each other; Wherein the thrust cam device comprises a toroidal-type continuously variable transmission in which two cavities are formed by combining two sets of the input disk and the output disk.
The thrust cam device is placed in a state where the pressing force generated by
Input cam, a pre-assembled mechanism in a compressed state preload force generating member capable of restraining the thrust cam device from the input cam and the output cam with aligning position output cam and cam roller of,
A shaft member positioning mechanism capable of positioning the shaft member in the axial direction while being fixed to the temporary assembly mechanism, wherein the temporary assembly mechanism includes a through hole formed in the input cam and the retainer; A shaft member formed by a screw member and a bolt screwed into the screw hole through the through hole, wherein the shaft member positioning mechanism is fixed to a thrust cam device by a bolt of the temporary assembly mechanism; A propulsion member detachably attached to the base member and propelling the shaft member in a direction of insertion into the thrust cam device, a temporary assembling device for a toroidal-type continuously variable transmission. 3. When the propulsion member is removed from the base member in a state where the base member is fixed to the thrust cam device by bolts of the temporary assembly mechanism, one end of the shaft member in the axial direction appears. The temporary assembling apparatus for a toroidal-type continuously variable transmission according to claim 1, wherein the apparatus is configured. 4. The input disk and the output disk in a state where the thrust cam device is restrained by the temporary assembling device according to any one of claims 1 to 3 and the shaft member is positioned in the axial direction. After being inserted through, the propulsion member of the shaft member positioning mechanism is removed from the base member, one end of the shaft member in the axial direction is fixed, and formed at the other end of the shaft member in the axial direction. A method of assembling a toroidal-type continuously variable transmission, wherein a nut is screwed into a male screw portion and tightened.