JP3367428B2 - Toroidal-type continuously variable transmission and adjustment method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] The present invention relates to a vehicle and the like.
Of link positioning structure for toroidal type continuously variable transmission
About good. [0002] 2. Description of the Related Art A trunnion of a toroidal type continuously variable transmission is used.
The structure of the supporting link is disclosed in
Japanese Unexamined Patent Publication (Kokai) No. H10-26095 is known. [0003] To explain this, as shown in FIG.
In addition, a toroidal groove is formed on the opposite surface to support it coaxially.
Pair of input / output disks
The word rollers 1L and 1R are connected to the rotation axis C of the input / output disk.₀
To the pair of trunnions 3L, 3R arranged with the
Can be freely rotated by the pivot shafts 2 and 2 that support
And the trunnions 3L, 3R are
The cylinder body can be displaced in and around the z and 3z axes.
It is supported on the side 60. [0004] Then, connected to the lower ends of the trunnions 3L, 3R.
The connected hydraulic cylinders 6, 6 connect the trunnions 3L, 3R.
By driving in the axial direction, the power rollers 1L and 1R rotate
It rotates around the rotation axis 3z (called tilting) and
The contact ratio of the output disk changes and the gear ratio changes continuously.
Will be updated. [0005] The trunnions 3L, 3R arranged opposite to each other are:
The upper end is upper link 4 and the lower end is lower
Power rollers 1L, 1R
Upper link 4 and lower against the thrust force applied to
The link 5 is between the rotation axes 3z, 3z of the trunnions 3L, 3R.
Are kept constant, and the trunnions 3L, 3L
The upper part of R is the rotation axis C of the input / output disk₀Move in the direction
Is regulated. [0006] The upper link 4 is provided with a through hole provided in the center.
The through hole 4C is connected to the casing through the bolt 17 and the nut 18.
Engages with a link support member 92 fixedly provided on the upper side of the bracket 10.
To be able to swing and displace horizontally in a predetermined range.
While being supported, through the through holes 4L and 4R provided at both ends.
And connected with the trunnions 3L and 3R,
In response to the axial displacement of the 3R, the link support member 9
2 and the trunnions 3L, 3R
Displacement around the rotation axis 3z is allowed. For this reason, the upper ends of the trunnions 3L, 3R
Between the rotating shaft portion 3a and the through hole 4L,
Spherical bearing 7 which is in sliding contact with the outer periphery of the rotating shaft 3a and the spherical bearing
Needle bearings 8 rolling between the inner circumferences 7
Interposed, upper link 4 to trunnion 3L
The thrust added to the trunnion 3L while allowing the inclination
Support the power. The opposite end of the upper link 4
4R and trunnion 3R formed in the same way are also connected
And is interposed between the spherical bearing 7 and the rotating shaft portions 3a and 3b.
The needle bearing 8 makes the trunnion 3R a shaft
Around rotation can be performed smoothly. [0008] Similarly, the lower link 5 is provided with a through-hole provided at the center.
A link support whose through hole 5C is fastened to the cylinder body 60 side
While being engaged with the holding member 93 and supported swingably,
The trunnion 3 is inserted through the through holes 5L and 5R provided at the ends.
L and 3R are connected to each other, and the trunnions 3L and 3R have opposite axes.
Swings around the link support member 93 according to the directional displacement
And the rotation axis 3z of the trunnions 3L and 3R
Allow displacement. For this reason, the lower ends of the trunnions 3L, 3R
Between the rotary shaft portion 3b and the through hole 5L, the inner periphery of the through hole 5L
Spherical bearing 7 in sliding contact with the outer periphery of the rotating shaft 3b and the spherical bearing
Needle bearings 8 rolling between the inner circumferences 7
Interposed, inclination of lower link 5 with respect to trunnion 3L
While allowing the thrust force applied to the trunnion 3L
To support. The lower link 5 is formed at the opposite end.
The through hole 5R and the trunnion 3R are connected in the same manner,
Needle bear interposed between surface bearing 7 and rotating shaft 3b
The ring 8 rotates the trunnion 3R around the axis in a circle.
It can be done smoothly. In this way, the link support members 92 and 93 are
The upper link 4 and the lower link 5 are swingably supported,
A trunnion 3L displaced about the rotation axis 3z and in the axial direction,
When the gear shifting operation is performed smoothly while keeping the center distance of 3R constant
In both cases, the horizontal displacement of the upper link 4 is within a predetermined range.
Power due to manufacturing dimensional tolerances, etc.
This is to absorb the displacement of the rollers 1L and 1R. [0011] SUMMARY OF THE INVENTION
In such a toroidal-type continuously variable transmission, power transmission is required.
Press the hydraulic cylinders 6 and 6 in opposite directions
Then, the force applied to the trunnions 3L, 3RAction lineF
d, Fu (up and down arrow directions in the figure) and power transmission
I / O diskApplied to power rollers 1L and 1R from
ofAction line (the tangent direction at the point of contact with the input / output disk
Force)Since FL and FR are different, trunnions 3L, 3
R has these forcesAction lineDistance between Fd, Fu and FL, FR
Moment is generated according to L and this moment is supported
Is applied to the upper link 4. this
As a result, the thrust applied to the opposing power rollers 1L, 1R
The force (pressing force) includes the force F acting on the upper link 4.
s, and for example, as shown in FIG.
When the force to support the
While the thrust force of 1R increases, the power roller 1L
The thrust force decreases, and the power thruster with the smaller thrust force
1LI / O diskBecame slippery against
Therefore, there is a problem that transmission torque is reduced. The present invention has been made in view of the above problems.
Position of the power roller due to dimensional tolerances, etc.
To prevent transmission torque from lowering while absorbing
An object of the present invention is to provide a toroidal-type continuously variable transmission. [0013] Means for Solving the Problems A first invention is as follows.Input and
Installed in a plane perpendicular to the rotation axis of the output disk
Pair of trunnions that can be displaced in the axial direction and around the axis
And each of the pair of trunnions in opposite axial directions.
An actuator to be driven and fixed to the trunnion
A pair of powers that are rotatably supported by eccentric shafts
Connect the roller and the front end of the trunnion via both ends.
And the first link support disposed on the casing side.
A first link whose center is swingably supported by a member;
Connect the proximal end of the trunnion through the end,
Second link support disposed on the actuator body side
And a second link whose center is swingably supported by a material.
The second link support member is actuated via a fastening means.
Connected to the heater body side, while loosening the fastening means
In this case, the second link and the second link support member
Adjusting means for supporting it so as to be displaceable in its longitudinal direction.
An adjustment method for a toroidal-type continuously variable transmission,
Second link support member assembled to the tutor body
After loosening the fastening means, the input / output disk and power
The roller is rotated and the fastening means is fastened again.. [0014] [0015] [0016] [0017] [0018] As described above,The first invention isFastening means
By loosening, the second link becomes the second link support member.
Supported by the adjusting means
Displaceable in the longitudinal direction of the second link and by the restricting means
Fixed in the axial direction of the input / output disk
Drive the gearbox to rotate the input / output disk and power roller.
If it is turned, errors in processing accuracy and assembly accuracy of each member
The position of the power roller is
Displaced along the longitudinal direction. In this operating state, the fastening means
When the adjusting means is fixed in this state,
In both cases, the second link support member is on the actuator body side
The second link is connected to the power roller by machining accuracy and
The position where the error of the vertical accuracy is absorbed, that is, the thrust force
Are supported in a swingable manner while maintaining the same
When transmitting force, a moment is applied in the same manner as in the conventional example.
Even if support force is applied to the first link, the first
Is supported on the actuator body side and
And the second phosphor is not displaced in the longitudinal direction.
Is the thrust force applied to the power roller by the adjusting means.
Can be maintained and the dimensional tolerance of each part can be absorbed.
However, the slippage of the power roller as in the prior art
It is possible to secure the transmission torque according to the design value
Possible to improve the performance of toroidal continuously variable transmissions
Can be made. [0019] [0020] [0021] [0022] [0023] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below.
This will be described with reference to the drawings. FIGS. 1 to 4 show two sets of input / output disks 2.
Double cavity consisting of 0, 21 and 20A, 21A
An example in which the present invention is applied to a continuously variable transmission of the type
Transmission unit composed of the disk 20 and the output disk 21
The first toroidal transmission unit, and the input disk 20
A, the transmission unit consisting of the output disk 21A is
It is a toroidal transmission unit. 1 and 2, a first toroidal speed change
The unit has a pair of toroidal grooves formed on opposing surfaces.
A pair sandwiched between the input disk 20 and the output disk 21
Power rollers 1L, 1R are
1 input shaft 25 axis = rotation axis C₀It was arranged across
Pivot whose base end is supported by a pair of trunnions 3L, 3R
The shafts 2 and 2 rotatably support the shaft. Further, the second toroidal transmission unit also has
The input disk 20A, the output disk
A pair of power rollers 1L and 1R sandwiched between 21A
A pair of trunnies (not shown) disposed across the input shaft 25
Rotated by pivot shaft supported on base
It is freely supported. Input disk 20, 20A and output disk
21 and 21A are arranged coaxially with the input shaft 25, and
Force discs 20 and 20A are coupled to input shaft 25 in the rotational direction
On the other hand, the output disks 21 and 21A
And are rotatably supported. Then, the output of the first toroidal transmission unit is output.
Output disk 21 and the output data of the second toroidal transmission unit.
The disc 21A is connected to an output gear 26 provided between the two.
Drive (not shown) via the counter shaft 27
With a gear ratio according to the tilt angle of the power rollers 1L, 1R to the shaft
Transmit power. In this embodiment, the counter system
The shaft 27 is disposed below the second toroidal transmission,
An output gear 26 covered with a gear housing 28;counter
-The shaft 27 is splined and
Removable shaft 27Configuration. In FIG. 2, the first toroidal transmission unit
The rotation axis C of the input / output disks 20 and 21₀(Input axis
25 axis), this rotation axis C₀Between
The trunnions 3L and 3R arranged on the right and left
And a rotating shaft 3a, 3b coaxial with the rotating shaft 3z at the lower end.
On the other hand, an input / output disk is provided between the rotating shaft portions 3a and 3b.
Offset by a predetermined amount in the outer circumferential direction of the discs 20 and 21
The offset portions 3c are respectively formed, and the pivot
2 is offset so as to be orthogonal to the rotation axis of the trunnion 3.
The base end side is supported by the toe portion 3c. The rotating shaft 3b at the lower end of the trunnion 3 is
Displaceable in the axial direction of the rotating shaft 3z and rotatable around the axis
Via the rod 6b of the hydraulic cylinder 6 (actuator)
To the hydraulic cylinder 6
The trunnions 3L and 3R move up and down in the figure according to the supplied oil pressure.
Is displaced in the rotation axis 3z direction of the
With the axial displacement of 3L, 3R, the power roller 1L,
Since the 1R tilts, the trunnion 3 rotates around the rotation axis 3z.
Rotate. The hydraulic cylinder 6 is connected to the casing 10.
Combined cylinder body 60 and cylinder body bottom 61
(Actuator body). On the other hand, above the opposing trunnions 3L, 3R
The rotating shaft portions 3a and 3b on the end and lower end sides are input / output disks.
Rotation axis C of 20, 21₀Swingable in a plane perpendicular to
Upper link 4 (first link), lower link 5 (second link)
Links), these upper links
4 and the lower link 5 are attached to the pivot shafts 2 and 2.
Thrust force from the attached power rollers 1L and 1R
(Pressing force). Here, the upper link 4 and the lower link 5
Through holes are formed at both ends and the center in the longitudinal direction of
And the through holes 4L, 4R and 5L, 5R at both ends.
The rotation shafts 3a, 3b of the trunnions 3L, 3R with
While the through holes 4C and 5C at the center are
I / O disk from the ring 10 and cylinder body 60 side
Rotation axis C of 20, 21₀To the top and bottom respectively in the figure
Swing by the link support members 12 and 30 protruding toward
Freely supported. The left and right hydraulic cylinders 6, 6 are trunnions 3
When L and 3R are driven synchronously in opposite axial directions,
Upper link 4 and lower link 5 are trunnions 3L, 3R
Of the link support members 12 and 30 in accordance with the axial displacement of
With the input and output disks 20 and 35 as fulcrums,
21 rotation axis C₀Swings in a plane orthogonal to. For this reason, the rotation shafts of the trunnions 3L, 3R
Parts 3a, 3b, upper link 4 and lower link 5
Between the through holes 4L, 4R and 5L, 5R at both ends,
Spherical bearing 7 and needle bearing 8 are interposed
And upper link 4 and loari for trunnion 3
Link 5 and the upper link 4
The link 5 regulates the radial displacement of the trunnions 3L, 3R.
To the thrust force applied to the power rollers 1L and 1R
Therefore, the rotation axes 3z and 3z of the trunnion 3 are displaced.
To prevent The outer circumference of the rotating shaft portions 3a and 3b of the trunnion 3.
The needle bearing 8 is engaged with the
The inner circumference of the spherical bearing 7 is engaged with the outer circumference of the
The spherical surface formed on the outer periphery of the spherical bearing 7
L, 4R and 5L, 5R engage the inner circumference. Here, the upper link 4 is supported to swing freely.
The link support member 12 has a bolt 15 inserted at one end.
It is formed of a cylindrical member having a through hole for
As shown in FIG. 2, a pair of through holes 12a provided on the side
Is a pin 1 for swingably supporting the upper link 4
4 and 14 are fitted, and these pins 14
0, 21 rotation axis C₀Is arranged in parallel with the link support
Attach to the upper link 4 at the tip protruding from the member 12
It is supported swingably by doing. The link support member 12 has a bottom portion (in the figure,
Through the bolt 15 inserted in the through hole opened downward)
To the positioning member 11. The positioning member 11 is an inner periphery of the casing 10.
It is attached to the upper surface, and
On the contacting upper surface, a notch fixed in advance to the casing 10 is provided.
The positioning member 11 is in a predetermined position
It is positioned so that it does not shift. The positioning member 11
Rotary axis C₀Bolt 1 fastened to casing 10 from the side
It is connected to the casing by 7,17. On the other hand, the rotation axis C₀Side positioning member 11
Is a convex portion 11a fitted to the inner periphery of the link support member 12.
To be screwed with the bolt 15 on this projection 11a.
Screw holes are formed, and are linked via the positioning members 11.
The support member 12 is fixed at a predetermined position on the inner periphery of the casing 10.
Is done. On the other hand, the rotation axis C of the input / output disk₀Across
To the cylinder body 60 facing the link support member 12
Is a link support member that supports the lower link 5 so as to swing freely.
A pedestal 60A for fixing 30 is protruded upward. The link supporting member 30 is provided on the upper surface of the base 60A.
A concave portion 60C having a U-shaped cross section is provided to accommodate the
The horizontal dimension (X-axis direction in the figure) of the concave portion 60C is:
The link support member 30 is changed within a predetermined range in the X-axis direction in FIG.
Is set to a value that can be adjusted, and the side surface of the link support member 30 is recessed.
A predetermined gap corresponding to the displacement amount is provided between the inner circumference of the portion 60C and the inner circumference of the portion 60C.
It can be formed. A link for supporting the lower link 5 so as to swing freely.
The support member 30, as shown in FIG.
0, 21 rotation axis C₀Pins 35, 35 project in parallel with
Then, similarly to the upper link 4 side, the lower link 5
The pins 35 are fitted into the central through hole 5C.
Through the through hole, and the lower link
5 is swingably supported. Here, the link support member 3 of the lower link 5
0 From the bottom surface, stud
Two bolts 33 and 34 are protruded, respectively.
The bolts 33 and 34 are the base 60A and the cylinder body
While being inserted through the through hole 60D provided in the bottom portion 61,
Lower surface of cylinder body 60 or bottom 61 of cylinder body
Nuts 33a and 34a are screwed into the ends protruding from the lower surface of the
By doing so, the link support member 30 is fastened to the pedestal 60A.
You. The inner diameter of the through hole 60D is a stud bolt.
Are set larger than the outer diameters of the
Enables position adjustment of the link support member 30 in the X-axis direction.
You. Then, the link support member 30 and the pedestal 60A
Positioning was made to protrude from the lower surface of the link support member 30.
Dowel pin 32 and locate hole 60 provided in base 60A
B. The locate hole 60B is shown in FIG.
Y, rotation axis C₀In the direction (Y-axis direction)
Fitted and the rotation axis C of the link support member 30₀Direction positioning
While the longitudinal direction of the lower link 5 is as shown in FIG.
Direction (X-axis direction in the figure)Knock pin 32Predetermined displacement
Allowed within the range. Therefore, the nuts 33a and 34a are fastened.
During the assembly of the toroidal-type continuously variable transmission
The position of the member 30 in the X-axis direction is determined by the nuts 33a and 34a.
It is set at any position where it is fastened. The lower link of the second toroidal transmission section
5 supporting the first toroidal transmission
It is configured in the same way as the
While positioned in the C0 direction, the longitudinal direction of the lower link 5
Direction (X-axis direction in FIG. 2) so as to be displaceable within a predetermined range.
The position of the link support member 30 in the X-axis direction is
34a is set at an arbitrary position where it is fastened. However, the nut for fastening the link support member 30
The socket 34a is fastened to the bottom surface of the cylinder body 60,
Between the cylinder body 60 and the cylinder body bottom 61
Is provided with a counter shaft 27, which supports the link.
Cylinder body facing nut 34a for fastening member 30
At the bottom 61, remove the counter shaft 27
Work to loosen or tighten the nut 34a
Through hole 29 is formed. Further, the cylinder body 60 and the cylinder
The body bottom 61 is, as shown in FIGS.
After being positioned at a predetermined position by the
Therefore, it is fastened to the casing 10. Here, the trunnion 3L was connected to the lower end.
Rod 6bBoss of piston 6a that coversIs shown in FIG.
As described above, the cylinder body 60 and the cylinder body bottom 6
1 through the through holes 60E and 61a formed in
The inner diameter of these through holes 60E and 61a isBoss of piston 6a
PartOf the rod 6bAnd fixie
6a bossIs at least in the through holes 60E and 61a.
It is inserted so as to be displaceable in a predetermined range in the X-axis direction. Then, above and below the piston 6a,
Rod 6bBoss of piston 6a that coversMultiple around the perimeter
The seal rings 71 are engaged, and these seal rings 71
The hydraulic cylinder is slid in contact with the inner circumference of the through holes 60E and 61a.
The oil pressure in the damper 6 is maintained. The rod 6bAnd the boss of the piston 6aNo
To allow displacement in the through holes 60E and 61a, seal
With the inner circumference of the ring 71With the boss of the piston 6aDiameter between
A predetermined gap 71a is formed in each direction.
, The piston ring slidingly contacting the inner circumference of the hydraulic cylinder 6
70 and a predetermined distance in the radial direction between the outer circumference of the piston 6a.
A gap 70a is formed, and the link support member 30 and the
Rod 6b by positioning the link 5 in the X-axis directionAnd pis
Ton 6a bossTo the gap 7 of the seal ring 71.
Absorbed by gap 70a between 1a and piston ring 70
I do. The cylinder body is formed at the bottom 61 of the cylinder body.
Corresponding to the lower end of the through hole 61aIn positionRod 6bOverturn
Boss of piston and piston 6aThe collar 72 is arranged around the
As shown in FIG. 5, the slide of the power roller 1L is provided.
The strike force increases and the trunnion 3L is deformed, and the rod 6b
Is displaced when the lower end of the
When the seal ring 71 is crushed by contacting the inner circumference of the lower end,
To prevent. In FIG. 5, the thrust of the power roller 1L is shown.
The parts supporting the force are trunnion 3L and upper link
4. Position of the through holes 4L and 5L where the lower link 5 is connected
Show. The rod 6b on the trunnion 3R sideas well as
The boss of the piston alsoAlthough not shown, same configuration as above
Then, the X-axis direction of the link support member 30 and the lower link 5
Rod 6bAnd piston bossof
The displacement is determined by the gap 71a of the seal ring 71 and the piston ring.
It is absorbed by the gap 70a of the ring 70. The configuration is as described above.
explain. The assembly of the toroidal type continuously variable transmission is completed.
At that point, the upper link 4 is attached to the positioning member 11
By the link support member 12 fastened, X, Y, Z
While positioning at a predetermined position in each axial direction,
The link 5 is provided by the link support member 30 fastened to the base 60A.
Therefore, it is positioned at an arbitrary position only in the X-axis direction.
You. For this reason, the positions of the power rollers 1L, 1R
In the correction process for correcting the displacement, first, the lower link 5 is rocked.
The link support member 30 movably supported is connected to a cylinder body.
The nut fixed to the cylinder 60 and the cylinder body bottom 61
G) are loosened. At this time, the second toroidal
In the transmission section, as shown in FIGS.
Once the shaft 27 covers the nut 34,
Remove the shaft 27. By loosening the nuts 33a, 34a
The link support member 30 is guided by the locate hole 60B.
And can be displaced in a predetermined range in the horizontal direction (X-axis direction) in FIG.
The rotation axis C of the input / output disks 20 and 21₀
The displacement in the direction is regulated, and the lower link 5 supports the link.
Displaced in the longitudinal direction (X-axis direction in FIG. 2) together with the member 30
It becomes possible. In this state, the continuously variable transmission is operated to
Disc 20, 20A, 21, 21A and power roller
When 1L and 1R are rotated, the link support member 30 becomes a pedestal.
Displaced in the X-axis direction on the inner circumference of the recess 60C of 60A,
When the workpiece 5 is displaced only along the longitudinal direction, the
Power roller absorbs errors in processing accuracy and assembly accuracy
The positions of 1L and 1R are at predetermined positions where the displacement has been corrected.
Positioned. With the displacement of the lower link 5 in the X-axis direction,
And the trunnion 3 connected via the through holes 5L and 5R.
Rods 6b, 6b provided below L and 3R are also displaced.
However, as described above, the piston ring 70 and the seal ring
The gaps 70a, 71a provided in the
A displacement within 0E, 61a is allowed. Then, in this operating state, the nut 33a,
34a, the link support member 30 is
Coupled to the dam body 60 and the cylinder body bottom 61,
The lower link 5 has the processing accuracy and the power rollers 1L and 1R.
The position where the error of the assembly accuracy was absorbed, that is,Roarin
When the workpiece 5 is displaced along the longitudinal direction,
Absorbs errors in accuracy and assembly accuracy,
The position is positioned at a predetermined position where the displacement has been corrected,
The lower link 5 is a power roller 1 added to the power roller.
Join L, 1RWhile maintaining the same thrust force,
It will be movably supported. Therefore, when transmitting the power,
As in the conventional case, the force Fs for supporting the moment (FIG. 7)
Is added to the upper link 4, the upper link
Power 4 is not displaced in the horizontal direction.
The state where the thrust forces applied to the
The lower link 5 must not absorb the dimensional tolerance of each part.
In addition, it suppresses slippage of the power roller as in the conventional example
To secure transmission torque according to the design value
To improve the performance of toroidal-type continuously variable transmissions
You can do it. The position in the X-axis direction on the lower link 5 side
By the predetermined adjustment, the axes of the rods 6b, 6b and the through holes 6
The axis of 0E and 61a may be shifted,
70 a and 7 provided in the ring 70 and the seal ring 71.
1a absorbs this displacement, and the piston
Ring 70 and seal ring 71 are not crushed.
The axial displacement and rotational resistance of the runions 3L and 3R are
Can prevent it from increasing and ensure smooth operation.
Because The positioning adjustment of the lower link 5 is completed.
After that, the countershaft 27 is again turned to the output gear 26.
Assembled in In the above embodiment, the processing of each member is
Power rollers that absorb errors in processing accuracy and assembly accuracy
1L, 1R position adjustment after assembling the continuously variable transmission
However, for example, if performed every predetermined period,
The displacement of the power rollers 1L and 1R can be absorbed.
Wear. FIG. 6 shows a second embodiment in which the first embodiment is used.
Positioning of Link Support Member 30 and Pedestal 60A of Embodiment
To limit the displacement of the knock pin 32 in the X-axis direction
, Cylinder body 60 and cylinder body bottom 61
Engage with knock pin 62 for positioning casing 10
Locating hole 63 can be displaced in the X-axis direction within a predetermined range.
Other configurations are the same as those of the first embodiment.
The same is true. The link support member 30 is provided with a knock pin 32
And positioned at a predetermined position in the X and Y axis directions
And are fastened by nuts 33a and 34a. On the other hand, a knock projecting from the casing 10
The locate hole 63 that engages with the pin 62 is
0 and through the cylinder body bottom 61
Is formed as an elongated hole extending in the X-axis direction.
Positioning of Y60 and Cylinder Body Bottom 61 in Y-axis direction
The cylinder body 60 and the cylinder in the X-axis direction.
The displacement of the dam body bottom 61 is allowed within a predetermined range. Then, as shown in FIG.
The casing 60 and the cylinder body bottom 61
The bolt 64 fastened to the cylinder body 60 and the cylinder
Through the elongated through hole formed in the bottom 61 of the body.
Then, at any position in the X-axis direction, the cylinder body 60 and
The cylinder body bottom 61 can be fastened. In this case, in the case of the toroidal type continuously variable transmission,
When assembly is completed, the upper link 4 is positioned.
The link support member 12 fastened to the member 11
One that is positioned at a predetermined position in each of the X, Y, and Z axial directions
On the other hand, the lower link 5 side is a cylinder body via the base 60A.
60, a link support fastened to the cylinder body bottom 61
By the holding member 30, the position can be set at any position only in the X-axis direction.
It is decided. Therefore, the positions of the power rollers 1L, 1R
In the correction process for correcting misalignment, the bolt 64 is loosened,
Connect the cylinder body 60 and the cylinder body bottom 61
The displacement of the thing 10 in the X-axis direction is allowed. In this state, the continuously variable transmission is operated to
Disc 20, 20A, 21, 21A and power roller
When 1L and 1R are rotated, the link support member 30 becomes a pedestal.
60A and the cylinder body 60
Displaces in the X-axis direction together with the
Link 5 is displaced only along the longitudinal direction,
Absorbs machining accuracy and assembly accuracy errors,
The positions of the lines 1L and 1R are predetermined positions corrected for positional deviation.
Is positioned. Then, in this operating state, the bolt 64 is reset.
And the cylinder body 60 and the cylinder body
The bottom 61 is connected to the casing 10 and the lower link 5 is
Power rollers 1L and 1R are used for processing accuracy and assembly accuracy.
The position where the error was absorbed, that is,Lower link 5 in longitudinal direction
Processing accuracy and assembly of each member by displacing along
Absorbs the accuracy error, and the position of the power roller
It is positioned at the corrected predetermined position, and the second link is
Join Power RollerThe thrust force shown in the conventional example is
It will be supported swingably while maintaining the same condition.
You. Thus, as in the first embodiment, the power
Since there is no need to attach and detach the
To the power rollers 1L and 1R while improving the performance
The state where the thrust force becomes equal can be maintained, and the lower link 5
While absorbing the dimensional tolerance of each part on the side,
Power roller slippage is suppressed according to the design value.
It is possible to secure transmission torque, toroidal
Can improve the performance and productivity of
Because

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a toroidal type continuously variable transmission showing an embodiment of the present invention. FIG. 2 is a vertical cross-sectional view taken along the line AA of FIG. FIG. 3 is an enlarged cross-sectional view of the rod part. FIG. 4 is a bottom view of the cylinder body. FIG. 5 is a conceptual diagram showing a state of deformation of the trunnion. FIG. 6 is a bottom view of a cylinder body showing a second embodiment. FIG. 7 is a longitudinal sectional view showing a conventional toroidal type continuously variable transmission. [Description of Signs] 1L, 1R Power roller 3L, 3R Trunnion 3z Rotary shaft 4 Upper link 5 Lower link 6 Hydraulic cylinder 9 Dowel pin 10 Casing 11 Positioning member 11a Convex portion 12 Link support member 14 Pin 15 Bolt 20, 20A Input disk 21 , 21A Output disk 25 Input shaft 26 Output gear 27 Counter shaft 28 Gear housing 29 Through hole 30 Link support member 32 Dowel pin 33 Stud bolt 33a Nut 34 Stud bolt 34a Nut 35 Pin 60 Cylinder body 60A Base 60B Locate hole 60C Recess 60D, 60E Through hole 61 Cylinder body bottom 62 Dowel pin 63 Locate hole 64 Bolt 70 Piston ring 70a Gap 71 Seal ring 71a Gap 72 Collar

Continuation of the front page (56) References JP-A-57-47060 (JP, A) JP-A-57-79356 (JP, A) JP-A-64-21261 (JP, A) JP-A-2-283949 (JP) JP-A-3-113153 (JP, A) JP-A-4-351360 (JP, A) JP-A-5-126222 (JP, A) JP-A-6-34010 (JP, A) 9-317837 (JP, A) U.S. Pat. No. 6,106,431 (US, A) European Patent Application Publication 874178 (EP, A2) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16H 15/38

Claims (1)

(57) [Claims] [Claim 1] Directly with respect to the rotation axis of the input and output disks.
Disposed in the intersecting plane and can be displaced in and around the axis
A pair of trunnions and the pair of trunnions are driven in opposite axial directions.
And an eccentric shaft fixed to the trunnion.
Through a pair of rotatable power rollers and
Connect the tip of the runion to the casing
The center portion is swingably supported by the arranged first link support member.
The first link held is connected to the base end of the trunnion via both ends.
And a second link support provided on the actuator body side.
And a second link whose center is swingably supported by a holding member.
Wherein the second link supporting member via a fastening means actuated
When the fastening means is loosened while connected to the data body side
The second link, and the second link support member
Adjusting means for supporting it so that it can be displaced in the longitudinal direction.
A method of adjusting an idal type continuously variable transmission, comprising: a second link mounted on the actuator body
After loosening the fastening means of the support member, the input / output disk
And the power roller is rotated, and the fastening means is fastened again.
Of adjusting a toroidal type continuously variable transmission characterized by
Law.