JP3427652B2 - Toroidal type continuously variable transmission - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a structure for connecting a trunnion and a link of a toroidal type continuously variable transmission used in a vehicle or the like.

[0002]

2. Description of the Related Art As a structure of a link for supporting a trunnion of a toroidal type continuously variable transmission, there is Japanese Patent Application No. 7-195072 proposed by the present applicant.

To explain this, as shown in FIG. 6, a pair of power rollers 1 and 1 sandwiched by a pair of input / output disks (not shown) having toroidal grooves formed on the opposite surfaces, It is rotatably supported by a pair of trunnions 3 and 3 arranged with a disc rotation axis C sandwiched therebetween by eccentric shafts 2 and 2 whose base ends are supported.

The power rollers 1 and 1 are provided with trunnions 3 and 3.
By changing the tilt angle (the rotation angle around the axis of the trunnion 3) according to the displacement in the axial direction, the arbitrary gear ratio is set steplessly.

In the plane orthogonal to the rotation axis C of the input / output disk, a pair of trunnions 3 and 3 disposed on the left and right sides sandwiching the rotation axis C are provided with a rotation shaft portion 3a at the upper end and the lower end.
3b is formed, an offset shaft portion 3c offset by a predetermined amount in the radial direction is formed between the rotation shaft portions 3a and 3b, and the eccentric shaft 2 is orthogonal to the rotation shaft of the trunnion 3 and is offset shaft portion 3c. The base end is supported by. In addition, shoulders 30 are formed between the rotating shafts 3a and 3b and the offset shaft 3c.

The rotating shaft portion 3b on the lower end side of the trunnion 3 is
It is connected to a rod 6b of a hydraulic cylinder 6 that is capable of expanding and contracting in the axial direction and rotatable about the axis, and the trunnions 3 and 3 are displaced in the vertical direction in the figure in accordance with the hydraulic pressure supplied to the hydraulic cylinder 6, and at the same time the power is reduced. The rollers 1 and 1 rotate according to tilting of the rollers.

On the other hand, the upper and lower rotating shaft portions 3a and 3b of the trunnions 3 and 3 are connected to each other via links 4 and 5 which are swingable in a plane orthogonal to the rotating shaft of the input / output disk. The axial force applied to one trunnion 3 is transmitted to the other trunnion 3, and the pair of trunnions 3 and 3 facing each other can be synchronously driven . Through holes are formed at the ends of the links 4, 5 in the longitudinal direction in FIG. 6, and the through holes 4L, 4R, 5L, 5R at these both ends are
The links 4, 5 and the trunnion 3 are swingably connected via a spherical joint composed of a convex spherical body 7 and a concave spherical ring 8, and are further formed in the central portions of the links 4, 5. The through holes 4C and 5C are freely swingable through the link support members 12 and 13 projecting vertically from the casing 10 toward the rotation axis C of the input / output disk and the spherical joint similar to the above. Be connected.

And, it is connected through a spherical joint,
Predetermined gaps δ are formed between the ends of the links 4 and 5 and the shoulders 30 of the trunnions 3 and 3, respectively, and the swinging links 4 and 5 and the shoulders 30 that are displaced in the axial direction and around the axis are formed. The smooth swinging of the links 4 and 5 is ensured while avoiding the interference with the.

[0009]

However, in the above-described conventional toroidal type continuously variable transmission, the rotation shafts 3a and 3b of the trunnion 3 and the links 4 and 5 are connected to each other.
Although the spherical body 7 fitted to the outer circumferences of a and 3b and the spherical ring 8 fitted to the inner circumferences of the through holes of the links 4 and 5 are used, in the trunnion 3 on the left side of FIG. Three
b is connected to the through holes 4L and 5L of the links 4 and 5 through the spherical joint, but if the dimensional tolerance of the spherical body 7 and the spherical ring 8 and the assembly error are added to the dimensional tolerances of the through holes 4L and 5L, the rotating shaft portion 3a, and 3b, the upper and lower spherical joint hands
May shift in the axial direction of the trunnion, and this deviation cannot be adjusted after the assembly because the upper and lower spherical joints are assembled by fitting, and the drive resistance of the pair of trunnions 3, 3 becomes uneven. There were cases where gear shifting became unstable.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to prevent a shift of the rotating shafts of the trunnion and the link and to perform a stable gear shift.

[0011]

According to a first aspect of the present invention, a toroidal groove is formed on surfaces facing each other, and an input disk and an output disk are coaxially arranged, and the input and output disks are provided. Between a pair of trunnions arranged in a plane orthogonal to the rotation axis and displaceable in the axial direction and around the axis, a rotation shaft portion formed at both ends of the trunnion, and a rotation shaft portion of the trunnion. While being sandwiched between the offset shaft portion offset by a predetermined amount from the rotation shaft and the facing surface of the input disk and the output disk,
A pair of power rollers that are rotatably supported by eccentric shafts fixed to the offset shaft portions of the pair of trunnions, actuators that extend and retract the pair of trunnions in opposite axial directions, and the rotation. with the rotation shaft portions of closely spaced proximally actuator of the shaft portion is swingably connected through a spherical joint, a first link forming a predetermined gap between the shoulder of the trunnion, Second connecting the rotating shafts on the free end side to each other in a swingable manner
In the toroidal type continuously variable transmission with the link of
A spherical member is fixed to the rotary shaft portion on the free end side, while a hole portion that engages with the spherical member in the radial direction and the extension direction of the trunnion is formed at both end portions of the second link. It is arranged so as to form a predetermined gap between the second link and the shoulder portion.

[0012] In a second aspect based on the first aspect, the parallel portion formed on the side of the trunnion facing the shoulder portion and parallel to the axis of the rotary shaft portion is connected to the parallel portion. The spherical member is engageable with the spherical member.

According to a third aspect of the present invention, in the first aspect, the hole portion is formed on a side facing the shoulder portion of the trunnion and is parallel to the axis of the rotary shaft portion, and the parallel portion. And a conical portion having a predetermined inclination capable of engaging with the spherical member.

In a fourth aspect of the present invention, a toroidal groove is formed on the surfaces facing each other, and an input disk and an output disk are provided coaxially with each other and a rotation axis of the input and output disks. Are arranged in a plane orthogonal to each other,
A pair of trunnions displaceable in the axial direction and the axis, a rotating shaft portion formed at both ends of the trunnion, an offset shaft portion offset by a predetermined amount from the rotating shaft between the rotating shaft portions of the trunnion, A pair of power rollers that are sandwiched between the facing surfaces of the input disk and the output disk and that are rotatably supported by eccentric shafts fixed to the offset shaft portions of the pair of trunnions, and the pair of power rollers. an actuator for each stretch drives the trunnion in opposite direction, the rotation shaft portions of closely spaced proximally actuator of the rotating shaft while swingably connected through a spherical joint, the shoulder of the trunnion And a second link that forms a predetermined gap between the first link and a second link that swingably connects the rotating shaft portions on the free end side. Type continuously variable transmission, a spherical member fixed to the rotary shaft portion on the free end side, and a rotary shaft portion on the free end side formed at both ends of the second link and engaging with the spherical member. And a second radial displacement restricting means that restricts radial displacement of the
The thrust transmission member is interposed between the link and the free end side rotation shaft portion to transmit the axial displacement of the trunnion in the extension direction and to form a predetermined gap between the trunnion shoulder portion and the link. Prepare

[0015]

Therefore, according to the first invention, both ends of the pair of trunnions are connected through the first and second links,
Since a predetermined gap δ is formed between the first and second links and the shoulder portion of the trunnion, the interference between the first and second links and the shoulder portion can be prevented as in the prior art example, and the galling or the like can be prevented. The wear of the toroidal type continuously variable transmission can be improved by preventing the contact between the two to improve the durability of the toroidal type continuously variable transmission. for you to engage in the extension direction, the sphere joint provided on the rotating shaft portion of the base end side, as shown in the prior art, by such as dimensional tolerances or assembly errors, where
When deviated from the fixed position, the hole and the spherical member can be displaced in the axial direction of the trunnion according to this deviation, and it is possible to absorb this deviation by changing the engaging position. In addition, the driving resistance of the pair of trunnions is prevented from becoming non-uniform and the gear shifting is prevented from becoming unstable, so that stable gear shifting performance is ensured and the rotary shaft portion on the free end side has the spherical ring as in the conventional example. Is unnecessary, and the number of parts and the number of assembling steps can be reduced to provide a toroidal type continuously variable transmission with high productivity.

According to a second aspect of the invention, the hole portion is composed of a parallel portion and a spherical surface portion, and the spherical portion is engaged with a spherical member coupled to the rotary shaft portion on the free end side, whereby the trunnion and the first member are provided. And the engaging position of the second link from the predetermined position to the trunnion shaft
When they are deviated in the direction , the spherical portion and the spherical member can be displaced in the axial direction of the trunnion according to this deviation, and the deviation of the rotation axis can be absorbed by changing the engagement position.

According to a third aspect of the invention, the hole portion is composed of a parallel portion and a conical portion, and the conical portion engages with a spherical member coupled to the rotary shaft portion on the free end side, so that the trunnion and the first portion are engaged. And the engaging position of the second link from the predetermined position to the trunnion shaft
When it is deviated in the direction , the conical portion and the spherical member can be displaced in the axial direction of the trunnion according to this deviation, and it becomes possible to absorb the deviation of the rotation axis by changing the engagement position, and the conical portion Since the structure is simple, it can be easily processed, and the manufacturing cost can be reduced.

According to a fourth aspect of the present invention, the second link is swingably connected to the trunnion through a radial displacement restricting means that swingably engages with a spherical member, and the free end side of the trunnion is a power source. The radial displacement of the rotary shaft is restricted so that it does not open due to the thrust force of the roller, and the force or displacement in the extension direction from the actuator etc. can be transmitted to the opposing trunnion side via the thrust transmission member. It is due to the spherical ring and the trunnion rotation axis direction of the deviation due to the assembly error of the spherical body, such as the prior art
Preventing the influence and ensuring smooth gear shifting performance, friction resistance can be reduced by making the end portion of the thrust transmission member almost point contact, which promotes downsizing of the hydraulic cylinder and improvement of gear shifting speed. It becomes possible.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 and 2 show a case where the present invention is applied to the toroidal type continuously variable transmission shown in FIG. 6 of the conventional example, and the upper portion (free end side) of the trunnion 3 shown in FIG. 6 is shown.
The rotary shaft portion 3a and the link 4 are connected to each other through the through hole 41L and the spherical body 7. Others are the same as those in the conventional example. Omit it.

The trunnion 3 of FIG. 1 is constructed similarly to the left side of FIG. 6, and only the left side trunnion 3 side will be described below, but the opposite right side trunnion 3 side of FIG. 6 is similarly constructed. It

In FIG. 1, the trunnion 3 forms a rotary shaft portion 3b at the base end side which is connected to a hydraulic cylinder 6 (see FIG. 6) as an actuator via a rod 6b in the lower portion of the drawing, while an offset shaft portion is formed. A rotary shaft portion 3a is also formed on the upper free end side in the figure with 3c interposed therebetween, and these rotary shaft portions 3a and 3b are supported so as to be rotatable and axially displaceable on the same axis.

The rotating shaft portion 3b on the base end side is connected to the link 5 via a spherical joint, as in the conventional example.

That is, the inner circumference of the cylindrical spherical ring 8 is formed between the through hole 5L of the link 5 serving as the first link and the rotary shaft portion 3b by a concave spherical surface having a predetermined inner diameter. A spherical body 7 having a through hole on the inner periphery and having a predetermined outer diameter is engaged, and the outer periphery of the spherical body 7 formed of a convex spherical surface is brought into sliding contact with the inner periphery of the spherical ring 8 to provide a special While the spherical body 7 is held on the inner circumference of the spherical ring 8 without using a retaining means, the spherical body 7 and the spherical ring 8 can be relatively rotated about an arbitrary axis. The outer circumference of the spherical ring 8 is fixed to the inner circumference of the through hole 5L by press fitting or the like, while being fixed to the outer circumference of the rotating shaft portion 3b by press fitting or the like.

As shown in FIG. 6, such a spherical joint has the through holes 4C, 5L, 5C, 5R of the links 4, 5, the rotary shaft portion 3b on the base end side of the trunnion 3 and the link support member 12, as shown in FIG. It fits and is supported between 13 and 13 by press fitting or the like.

On the other hand, the rotation shaft portion 3a on the free end side of the trunnion 3 and the link 4 as the second link are connected by a spherical body 7 fixed to the rotation shaft portion 3a and a hole portion having a spherical surface portion 43. By engaging with the through hole 41L of the spherical portion 4
3 is in sliding contact with almost the upper half of the spherical body 7. The spherical body 7 of the rotary shaft portion 3a is substantially the same as that forming the spherical joint.

Here, the through hole 41L is formed in the link 4 instead of the through hole 4L shown in FIG. 6 of the conventional example, and as shown in FIG. 2, it faces the shoulder portion 30 of the trunnion 3. The parallel portion 42 parallel to the rotation axis is provided on the lower surface 40 side.
Is formed, from the middle of the plate thickness of the link 4 toward the upper surface,
A spherical portion 43 having a hemispherical curved surface that can be engaged with the spherical body 7.
Are continuously formed from the upper end of the parallel portion 42.

The inner diameter of the spherical portion 43 is set to decrease as it goes upward in the figure, and the inner diameter of the opening of the through hole 41L is larger than that of the upper surface. Is set.

That is, the rotary shaft portion 3a to which the spherical body 7 is previously attached is inserted from the lower surface 40 side of the link 4 into the through hole 41L, and the free end of the trunnion 3 is located at the position where the spherical body 7 and the spherical portion 43 are engaged. The connection between the rotating shaft portion 3a on the side and the left end portion of the link 4 is completed.

Thus, the rotary shaft portion 3a on the free end side of the trunnion 3 is swingably connected to the link 4 via the spherical body 7 and the spherical surface portion 43 of the through hole 41L, and the rotary shaft portion 3a is connected to the through hole. The displacement of 41L in the radial direction is restricted by the link 4.

The rotating shaft portion 3b on the base end side of the trunnion 3 is connected to the link 5 via a spherical joint, and the opposing trunnions 3 and 3 have links 4 and 5 swingable about the supporting members 12 and 13 as fulcrums. The trunnion 3, which is connected via
3 can be driven synchronously.

Here, the connection state of the trunnion 3 and the link 4 is, as shown in FIG. 2, the neutral position of the trunnion 3, that is, the state in which the trunnion 3 and the links 4 and 5 are orthogonal to each other and the lower surface 40 of the link 4. The relative positions of the spherical body 7 and the spherical surface portion 43 of the through hole 41L are set so that a predetermined gap δ is formed between the spherical body 7 and the shoulder portion 30. A spherical joint is arranged so that a gap δ is formed on the link 5 side as well.

The gap δ has a predetermined value so that the lower surface 40 of the link 4 does not come into contact with the shoulder portion 30 of the trunnion 3 at the most extended position or the most contracted position of the hydraulic cylinder 6, as in the conventional example. Or it is set to a predetermined ratio,
It is set so as to be a predetermined ratio K or more with respect to the total stroke amount L of the hydraulic cylinder 6. The ratio K is
It is appropriately set according to the lever ratio of the link, the total stroke amount, and the like.

With the above construction, the operation will be described below.

When changing the tilt angle of the power roller 1, the left and right hydraulic cylinders 6, 6 shown in FIG. 6 are driven in opposite directions, for example, the trunnion 3 on the left side in the figure is driven upward. On the other hand, the right trunnion 3 is driven downward to change the tilt angle of the power roller 1 supported by the eccentric shaft 2.

At this time, the link 4 connecting the free end sides of the left and right trunnions 3 and 3 is the trunnion 3 of FIGS.
Since (= the left trunnion 3 in FIG. 6) rises, the spherical body 7 displaces the spherical portion 43 of the through hole 41L upward in the figure, and the link 4 swings with the link support member 12 in FIG. 6 as a fulcrum. The spherical portion of the through hole formed at the right end (not shown) of the link 4 faces the trunnion 3 via the spherical body 7.
Drive downward in FIG. 6, and similarly, the left and right trunnions 3,
The link 5 connecting the base ends of the link 3 is a link support member 13 provided in the middle of the link 5 via a spherical joint (see FIG. 6).
The trunnions 3 and 3 facing each other can be synchronously driven by swinging around the fulcrum, and the pair of trunnions 3 and 3 are displaced in the axial direction and are rotated about their axes in accordance with the tilt of the power roller 1. Rotate.

When the links 4 and 5 swing, a predetermined gap δ is formed between the links 4 and 5 and the shoulder portion 30 of the trunnion 3, so that the links 4 and 5 are the same as in the conventional example.
It is possible to prevent the interference between the shoulder portion 30 and the shoulder portion 30 , prevent abrasion due to contact such as galling, and improve durability.

With respect to the spherical body 7 and the through hole 41L which connect the rotary shaft portion 3a on the free end side of the trunnion 3 and the link 4, the upper surface of the spherical body 7 is brought into sliding contact with the spherical surface portion 43 of the through hole 41L, and the trunnion 3 of The upward displacement can be transmitted to the link 4, the rotation of the trunnion 3 about the axis can be permitted, and the trunnion 3 is coupled to the link 4 in the ascending direction to transmit the displacement or force of one trunnion 3 to the other.

On the other hand, the rotating shaft portion 3 on the base end side of the trunnion 3
The spherical joint for connecting b and the link 5 is connected in the axial direction in the upper and lower direction in the figure to connect one of the trunnions 3 in the same manner as the conventional example.
Transfer the displacement or force of the other to the other.

Then, the trunnion 3, which faces the power rollers 1 and 1 by holding and pressing the input / output disk,
Thrust force is applied in the direction of increasing the distance between the shafts of the trunnions 3, but the rotating shaft portions 3a on the free end side of the trunnion 3 are spherical.
And the rotation shaft portions 3b on the base end side of the trunnions 3 and 3 are also connected to each other via a spherical joint.
Since they are coupled in the longitudinal direction, it is possible to prevent the axial distances of the trunnions 3 and 3 from increasing and maintain the relative positional relationship between the power rollers 1 and 1 and the input / output disk.

Here, the free end side of the trunnion 3 is formed into a through hole 41L of the link 4 by the spherical body 7 coupled to the rotating shaft portion 3a.
Since it is slidably contacted with the spherical surface portion 43 formed on the base end, the spherical joint provided on the rotation shaft portion 3b on the base end side is, as shown in the above-mentioned conventional example, due to dimensional tolerance, assembly error, etc.
Trani engagement position of the link and the trunnion from a predetermined position
When it shifts in the on-axis direction , the spherical portion 43 and the spherical body 7 can be displaced in the axial direction of the trunnion 3 according to the shift, and this shift can be absorbed by changing the sliding contact position.
As in the conventional example, it is possible to prevent the drive resistance of the pair of trunnions 3 and 3 from becoming non-uniform to make the gear shifting unstable, to secure a stable gear shifting performance, and to prevent the rotary shaft portion 3a on the free end side from having the gear shift. Since the spherical ring 8 as in the conventional example is unnecessary, the number of parts and the number of assembling steps can be reduced to provide a toroidal type continuously variable transmission with high productivity.

FIG. 3 shows a second embodiment, in which the spherical surface portion 43 of the through hole 41L of the first embodiment is replaced with a conical portion 44, and the other construction is the same as that of the first embodiment. .

The through hole 41L is formed in the shoulder portion 30 of the trunnion 3.
Parallel part 4 parallel to the rotation axis from the lower surface 40 side facing
2 is formed, and a conical portion 44 having a predetermined inclination in which the inner diameter gradually decreases from the middle of the plate thickness of the link 4 toward the upper surface.
With respect to the opening portion of the through hole 41L, the inner diameter of the opening portion of the lower surface 40 is set to be larger than the inner diameter of the opening portion of the upper surface.

Also in this case, as in the first embodiment,
Upper and lower rotary shafts 3a and 3b sandwiching the offset shaft 3c
In addition to being able to absorb the displacement in the trunnion axial direction when connecting the links 4 and 5, the conical portion 44
Since the structure is simpler than that of the spherical portion 43 of the first embodiment, it can be easily processed and the manufacturing cost can be reduced.

FIG. 4 shows a third embodiment. Instead of the through hole 41L of the first embodiment, a thrust transmission member 45 which engages with the rotary shaft portion 3a on the free end side of the trunnion 3 is provided on the link 4 side. The other configuration is the same as that of the first embodiment.

The link 4 is formed with a through hole 4L which is connected to the rotary shaft portion 3a of the trunnion 3 on the free end side. The through hole 4L is formed parallel to the rotary axis line as in the conventional example.

The rotary shaft portion 3 is provided on the inner circumference of the through hole 4L.
The rotary body 3a is engaged with the rotary body 3a so that the radial displacement of the through hole 4L is restricted by the link 4, and the link 4 and the rotary body 3a are relatively shaken. It is movably connected (radial displacement regulating means).

On the other hand, the end face 31 of the rotary shaft portion 3a is formed in a flat shape, and on the rotary shaft line of this end face 31, an inverted "L" -shaped thrust transmitting member having a base end fixed to the link 4 is formed. 45
The end portion 45a of the link 4 is in contact with the end portion 31, and the position where the end portion 45a is in contact with the end surface 31 is such that a predetermined gap is formed between the lower surface of the link 4 and the shoulder portion 30 as in the above embodiment. Is set.

The link 4 is swingably connected to the trunnion 3 via a spherical body 7 engaged with the inner periphery of the through hole 4L, and the link 4 extends in the horizontal direction in the figure so that the free end side of the trunnion 3 does not open. The displacement can be regulated, and further, the axial force or displacement from the hydraulic cylinder 6 or the like can be transmitted to the opposing trunnion 3 side via the thrust transmission member 45,
The smooth shift performance is ensured by preventing the influence of the deviation of the trunnion rotation axis direction due to the assembling error between the spherical ring 8 and the spherical body 7 as in the conventional example, and the end of the thrust transmission member 45. By making the portion 45a substantially in point contact, the frictional resistance can be reduced as compared with the first or second embodiment, and the hydraulic cylinder 6 can be downsized and the speed change can be improved.

FIG. 5 shows a fourth embodiment, in which the thrust transmission member 45 of the third embodiment is replaced with a thrust transmission member 46 which is connected to the link 4 at both ends, and the other construction is the same as that of the third embodiment. It is similar to the embodiment.

The thrust transmitting member 46 is a substantially U-shaped member having a convex portion 47 which is in contact with the end face 31 at the center thereof. The thrust transmitting member 46 has a link 4 at both ends with a through hole 4L therebetween. Similarly to the end portion 45a of the thrust transmitting member 45 of the third embodiment, the convex portion 47 abuts the end surface 31 on the rotation axis, and the lower surface 40 of the link 4 and the shoulder portion 3 are joined together.
It is arranged so that a predetermined gap δ is formed between it and zero.

In the third embodiment, the thrust transmission member 45 for transmitting the axial displacement or force of the trunnion 3 to the link 4 is cantilevered, whereas the thrust transmission member 46 is supported by both ends. By doing so, rigidity can be improved, and reduction in frictional resistance and improvement in durability can be promoted at the same time.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts of a trunnion and a link showing an embodiment of the present invention.

FIG. 2 is also an enlarged view of FIG. 1, showing an enlarged cross-sectional view of a connecting portion between the upper part of the trunnion and the link.

FIG. 3 shows the second embodiment and is an enlarged cross-sectional view of a connecting portion between a trunnion upper portion and a link.

FIG. 4 is a cross-sectional view of main parts of a trunnion and a link, showing a third embodiment.

FIG. 5 is a cross-sectional view of the essential parts of the trunnion and the link according to the fourth embodiment.

FIG. 6 is a sectional view of a main part of a conventional toroidal type continuously variable transmission.

[Explanation of symbols]

1 power roller 2 eccentric shaft 3 trunnions 3a, 3b Rotating shaft part 3c Offset shaft 4,5 links 4L through hole 6 hydraulic cylinder 7 Spherical body 8 spherical ring 12, 13 Link support member 41L through hole 42 Parallel part 43 spherical surface 44 cone 45,46 Thrust transmission member 47 convex

Claims (4)

(57) [Claims] 1. A toroidal groove is formed on surfaces facing each other, and an input disk and an output disk are provided coaxially with each other, and in a plane orthogonal to a rotation axis of the input and output disks. A pair of trunnions that are disposed and displaceable in the axial direction and about the axis, a rotary shaft portion formed at both ends of the trunnion, and an offset that is offset from the rotary shaft by a predetermined amount between the rotary shaft portions of the trunnion. A pair of power rollers that are sandwiched between the shaft portion and the facing surfaces of the input disk and the output disk, and are rotatably supported by eccentric shafts fixed to the offset shaft portions of the pair of trunnions. An actuator that expands and contracts the pair of trunnions in opposite axial directions, and a rotary shaft portion of the rotary shaft portion on a proximal end side close to the actuator. It was thereby swingably connected through a spherical joint, swingably connected to the first link to form a predetermined gap, the rotating shaft portions of the free end between the shoulder of the trunnion In a toroidal type continuously variable transmission including a second link, a spherical member is fixed to the rotary shaft portion on the free end side, and the spherical member and the radial direction and the trunnion are provided at both end portions of the second link. A toroidal type continuously variable transmission characterized in that a hole is formed to be engaged in the extending direction, and the hole is arranged so as to form a predetermined gap between the second link and the shoulder. 2. The hole portion is formed on the side facing the shoulder portion of the trunnion and is parallel to the axis of the rotary shaft portion, and a spherical surface which is connected to the parallel portion and is engageable with the spherical member. The toroidal type continuously variable transmission according to claim 1, further comprising: 3. The hole portion is formed on a side facing the shoulder portion of the trunnion and is parallel to the axis of the rotating shaft portion, and a predetermined portion that is connected to the parallel portion and is engageable with the spherical member. The toroidal type continuously variable transmission according to claim 1, further comprising: 4. A toroidal groove is formed on the surfaces facing each other, and an input disk and an output disk are provided coaxially with each other, and in a plane orthogonal to the rotation axes of the input and output disks. A pair of trunnions that are disposed and are displaceable in the axial direction and around the axis, a rotating shaft portion formed at both ends of the trunnion, and an offset that is offset from the rotating shaft by a predetermined amount between the rotating shaft portions of the trunnion. A pair of power rollers that are sandwiched between the shaft portion and the facing surfaces of the input disc and the output disc, and are rotatably supported by eccentric shafts fixed to the offset shaft portions of the pair of trunnions. An actuator that expands and contracts the pair of trunnions in opposite axial directions, and a rotary shaft portion of the rotary shaft portion on a proximal end side close to the actuator. It was thereby swingably connected through a spherical joint, swingably connected to the first link to form a predetermined gap, the rotating shaft portions of the free end between the shoulder of the trunnion In a toroidal type continuously variable transmission including a second link, a spherical member fixed to the rotary shaft portion on the free end side, and engaged with the spherical member formed at both ends of the second link. Between the second link and the free end side rotating shaft portion while restricting the radial displacement of the free end side rotating shaft portion while engaging relatively displaceably around the axis. And a thrust transmission member that transmits the axial displacement of the trunnion in the extension direction and that can form a predetermined gap between the shoulder portion of the trunnion and the second link. Toroidal type continuously variable transmission.