JP4154950B2 - Temporary spindle temporary assembly of toroidal type continuously variable transmission and its assembly method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement proposal related to a temporary spindle assembly of a toroidal type continuously variable transmission, and a method of assembling the same to a toroidal type continuously variable transmission.
[0002]
[Prior art]
A toroidal-type continuously variable transmission usually includes a pair of input / output disks arranged coaxially and facing each other, and a power roller is interposed between the input / output disks.
The input disk is rotationally engaged on the main shaft by a ball spline or the like so as to be able to stroke, and the output disk is made non-strokeable on the main shaft and is rotatably supported by a bearing such as a needle bearing.
[0003]
For power transmission, the input rotation is transmitted to the input disk via the loading cam, and the loading cam urges the input disk in the direction approaching the output disk with a thrust according to the transmission torque, and the power roller between the input and output disks. The power is transferred between the input / output disks by shearing the oil film between the input / output disks and the power roller.
[0004]
By the way, when assembling the toroidal type continuously variable transmission, the input disk is temporarily assembled to the main shaft together with the loading cam to form a main shaft temporary assembly, and the end of the main shaft without the input disk and loading cam is inserted into the output disk. Usually, the power roller is sandwiched between the input and output disks, and then the loading roller is clamped between the input and output disks under preloading by a preloading means such as a disc spring by tightening a loading nut at the end of the spindle. .
[0005]
Here, a conventional spindle temporary assembly will be described. Conventionally, as described in Japanese Patent Application Laid-Open No. 2000-009196, a screw hole is provided on the back surface of the input disk far from the cone surface with which the power roller contacts, and is screwed into this. It has been proposed that a temporary spindle assembly is constructed by connecting a loading cam to an input disk with bolts and temporarily assembling these assemblies to corresponding ends of the spindle via a retainer.
[0006]
[Problems to be solved by the invention]
However, in the conventional main spindle temporary assembly in which it is necessary to provide a screw hole on the back surface of the input disk as described above, stress concentration occurs in the input disk at the position where the screw hole is provided, and this does not cause damage. In order to make the input disk sufficiently strong, the input disk must be enlarged, which has hindered downsizing of the toroidal continuously variable transmission.
[0007]
The present invention provides a temporary spindle temporary assembly for a toroidal-type continuously variable transmission capable of solving the above-mentioned problem by making it possible to form a temporary spindle assembly without requiring any hole machining on the back surface of the disk. For the purpose.
[0008]
[Means for Solving the Problems]
For this purpose, the main spindle temporary assembly of the toroidal type continuously variable transmission according to the present invention has the following configuration as described in claim 1.
Among the disks on the main shaft, the one disk is pushed in the axial direction of the main shaft until the pressurizing means disposed on the back surface of the disk that is rotationally engaged with the main shaft so as to be able to stroke is compressed in the axial direction of the main shaft. A temporary assembly sleeve that is temporarily assembled to the main shaft is fitted to the main shaft, the temporary assembly sleeve is fixed to the main shaft at a position where the temporary assembly state is maintained, and the other disk is mounted. A tubular stopper fitted to the main shaft is also used as the temporary assembly sleeve for preventing the bearing supported rotatably on the main shaft .
[0009]
【The invention's effect】
According to the configuration of the present invention, it is possible to configure the temporary spindle assembly without requiring any drilling in the disk, and therefore it is not necessary to enlarge the disk to ensure a predetermined strength. An increase in the size of the toroidal continuously variable transmission can be avoided.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 and 2 show a toroidal continuously variable transmission assembled using a main spindle temporary assembly according to an embodiment of the present invention, and FIG. 3 shows the main spindle temporary assembly.
As shown in FIG. 1, the toroidal-type continuously variable transmission has two toroidal transmission units in the transmission case 1, that is, a front side toroidal transmission unit 2 and a rear side in order to double the transmission capacity for a vehicle. A so-called double cavity type toroidal continuously variable transmission in which the toroidal transmission unit 3 is accommodated in tandem.
[0011]
These toroidal transmission units 2 and 3 are similar in that the main elements are the input disks 4 and 5, the output disks 6 and 7 disposed coaxially and opposed thereto, and the power rollers 8 and 9 between the corresponding input / output disks. Make the configuration.
As clearly shown in FIG. 2, the power rollers 8 and 9 are interposed between the input / output disks so as to transmit power by shearing the oil film between the corresponding input / output disks. , disposed opposite to the both sides of the rotation axis O ₃ of the input output disk.
[0012]
As shown in FIG. 1, the front side toroidal transmission unit 2 and the rear side toroidal transmission unit 3 are arranged coaxially so that the output disks 6 and 7 are back-to-back, and in this arrangement, the main shaft 10 is placed in the transmission case 1. The input / output disks 4 to 7 of both toroidal transmission units 2 and 3 are supported on the main shaft 10.
Each of the front side input disk 4 and the rear side input disk 5 is rotationally engaged with the main shaft 10 by the ball spline 11 but is slidable in the axial direction, and the rear side input disk 5 is screwed into the main shaft 10 and is loaded with a loading nut 12. To prevent it from coming off.
Here, the loading nut 12 compresses the disc springs 61 and 62 as preloading means according to the tightening force, and the front input disc 4 and the rear input disc 5 approach each other under the preload caused by the spring reaction force. I.e., in the direction toward the corresponding output disks 6,7.
[0013]
Further, the output disks 6 and 7 are integrally coupled to each other via the hollow output shaft 13, and the hollow output shaft 13 and the needle bearing are enabled by rotatably supporting the hollow output shaft 13 on the main shaft 10. The output disks 6 and 7 are supported on the main shaft 10 so as not to be displaced in the axial direction by the bearing 51 so as to be rotatable.
[0014]
The power rollers 8 and 9 are arranged to transfer power by shearing the oil film between the corresponding input / output disks 4, 6 and 5, 7 as described above. The trunnions 14 and 15 are supported rotatably.
Although the detailed shape of the trunnion 14 that rotatably supports the power roller 8 of the front side toroidal transmission unit 2 is shown in FIG. 2, a trunnion 15 that rotatably supports the power roller 9 of the rear side toroidal transmission unit 3 is shown. The same applies to the shape.
[0015]
Both the trunnions 14 of the front-side toroidal transmission unit 2 and both the trunnions 15 of the rear-side toroidal transmission unit 3 share the same upper end adjacent to each other on the same side (the upper side close to the top wall of the transmission case 1). The plate-like upper link 16 is articulated at the four corners.
For this reason, the plate-like upper link 16 has a planar shape, and openings 16a (see FIG. 2) through which the upper ends of the trunnions 14 and 15 enter are formed at the four corners.
The two trunnions 14 of the front side toroidal transmission unit 2 and the trunnions 15 of the rear side toroidal transmission unit 3 are further provided at the four corners of the plate-like lower link 17 that is common to all the lower ends adjacent to each other on the opposite lower side. As shown in FIG. 2, the plate-like lower link 17 has a planar shape similar to that of the plate-like upper link 16, and openings 17a into which the lower ends of the trunnions 14 and 15 enter at the four corners. Drill.
[0016]
When the upper and lower ends of the trunnions 14 and 15 are connected to the openings 16a and 17a of the plate links 16 and 17, the outer spherical surface of the spherical joint 18 is fitted into the openings 16a and 17a as shown in FIG. A rotary bearing 19 is interposed between the spherical joint 18 and the upper and lower ends of each trunnion 14, 15, and the upper and lower ends of each trunnion 14, 15 are connected to the plate-like links 16, 17 by a composite joint constituted by them. On the other hand, it is articulated so that it can rotate and change its angle of intersection.
The plate-like links 16 and 17 are driven out of the corresponding input / output disks by the clamping force between the input / output disks 4 and 6 to which the power rollers 8 and 9 correspond. It works like no.
[0017]
As shown in FIGS. 1 and 2, link supports 20 and 21 are attached to the transmission case 1 with bolts 22 and 23 between the upper ends of the paired trunnions 14 and between the upper ends of the paired trunnions 15. The link supports 24 and 25 are attached to the transmission case 1 by bolts 26 between the lower ends of the trunnions 15 and between the lower ends of the trunnions 15.
As shown in FIGS. 1 and 2, the plate-like link 16 is formed with openings 16b through which the link supports 20 and 21 penetrate, and the plate-like link 17 also has link supports 24 and 25 as shown in FIGS. A similar opening 17b is formed.
[0018]
Pins 27 projecting in the axial direction of the main shaft 10 from the respective outer surfaces are planted on the link supports 20 and 21, and pins 28 are also fitted to the link supports 24 and 25. 16 and 17 are supported with respect to the transmission case 1, but the holes 16c and 17c provided in the plate-like links 16 and 17 so that the pins 27 and 28 penetrate therethrough are oblong and long in the longitudinal direction of the trunnions 14 and 15. The links 16 and 17 are supported so as to be displaceable in the same direction.
[0019]
According to such a support structure, since the plate-like links 16 and 17 can be displaced in the longitudinal direction of the trunnions 14 and 15, there is a possibility that the movement is hindered by interference with parts other than the trunnions 14 and 15.
In order to eliminate this concern, the trunnions 14 and 15 restrict the displacement of the plate links 16 and 17 in the same direction. That is, as shown in FIG. 2, a stepped portion (only the stepped portion 14a of the trunnion 14 is visible in FIG. 2) provided to receive the spherical joint 18 and the rotary bearing 19 at the upper ends of the trunnions 14 and 15, and a plate-like upper link The plate-like upper link 16 is sandwiched between the upper ends of the trunnions 14 and 15 projecting from the opening 16a of the 16 and the stopper plate 30 attached by the bolts 29, so that the plate-like upper link 16 is displaced in the trunnion longitudinal direction. To regulate.
[0020]
As for the regulation of the plate-like lower link 17, as shown in FIG. 2, a step portion provided to receive the spherical joint 18 and the rotary bearing 19 at the lower ends of the trunnions 14, 15 (only the step portion 14b of the trunnion 14 in FIG. 2). And the plate-like lower link 17 between the front and rear unit shift synchronization (tilt synchronization) wire pulley 31 fixed to the lower ends of the trunnions 14 and 15 protruding from the opening 17a of the plate-like lower link 17. These restrict the displacement of the plate-like lower link 17 in the trunnion longitudinal direction.
[0021]
As shown in FIG. 1, an output gear housing 32 is arranged between the output disks 6 and 7 arranged back to back with each other, and this is attached to the transmission case 1 with a bolt 33, and a hollow output is provided in the gear housing 32. An output gear 34 formed integrally with the outer periphery of the shaft 13 is accommodated. At the same time, the gear housing 32 rotatably supports the central portion of the main shaft 10 with respect to the transmission case 1 via the hollow output shaft 13 by the ball bearing 35.
A counter gear 36 is engaged with the output gear 34, and the gear 36 is coupled to the counter shaft 37, so that the transmission power from the toroidal type continuously variable transmission is taken out from the counter shaft 37.
[0022]
The transmission input rotation transmitted from the left side of FIG. 1 is input to the input disks 4 and 5 of both toroidal transmission units 2 and 3 via the loading cam 38.
The loading cam 38 includes a cam flange 39, which is coaxially provided on the back surface of the front input disk 4, and is rotatably supported on the enlarged diameter end portion 10a of the main shaft 10 via a radial and thrust bearing 40. It is assumed that a cam roller 41 is interposed between the input disk 4 and the cam flange 39.
[0023]
The loading cam 38 transmits the input rotation to the front side input disk 4 and to the rear side input disk 5 via the main shaft 10, and by the relative rotation of the cam flange 39 and the front side input disk 4 according to the transmission torque. Thrust in the direction toward the output disk 6 is applied to the input disk 4.
The thrust reaction force at this time reaches from the cam flange 39 to the rear side input disk 5 through the radial and thrust bearing 40, the main shaft 10 and the loading nut 12 which rotatably support the main shaft 10 and this rear side input disk 5. The disk 5 is biased toward the output disk 7.
Therefore, the power rollers 8 and 9 are clamped between the corresponding input / output disks with a force corresponding to the transmission torque, and the power transmission between the corresponding input / output disks is enabled.
In the initial stage of torque transmission, the start of torque transmission can be compensated by the disc springs 61 and 62 pinching the power rollers 8 and 9 between the corresponding input / output disks.
[0024]
As shown in FIG. 2 showing the front-side toroidal transmission unit 2, a servo piston 42 is further coaxially coupled to the lower ends of the trunnions 14 and 15, and these servo pistons 42 are in phase (same shift direction) by the control valve 43. It is assumed that well-known shift control is performed by making the strokes synchronously.
In the following, the shifting operation will be described in brief. The input rotation is transmitted to the front input disk 4 via the loading cam 38, and the rotation to the input disk 4 is simultaneously performed via the ball spline 11 and the main shaft 10 to the rear input disk. 5 is similarly transmitted.
The rotation of the input disks 4 and 5 is transmitted to the power rollers 8 and 9 engaged with them through shearing of the oil film, and the power rollers 8 and 9 are rotated around the axis O _1. Then, the rotation is transmitted to the output disks 6 and 7 engaged with them through the shearing of the oil film, and this rotation reaches the counter shaft 37 through the counter gear 36 from the common output gear 34 and takes out the power from the counter shaft. be able to.
[0025]
Here, the trunnions 14 and 15 (power rollers 8 and 9) are synchronized by the servo piston 42 and in the same phase in the direction of the swing axis O ₂ orthogonal to the power roller rotation axis O ₁ , as shown in FIGS. When the power roller rotation axis O ₁ is offset from the disk rotation axis O ₃ by making a stroke from the non-shift position shown, the power rollers 8 and 9 are tilted around the swing axis O ₂ in the same phase.
Thereby, the contact locus circular radius of the power rollers 8 and 9 with respect to the input / output disk continuously changes, and the transmission ratio between the input / output disks 4 and 6 and the transmission ratio between the input / output disks 5 and 7 are kept the same. Can be changed steplessly.
When the transmission ratio reaches a predetermined transmission ratio, the transmission ratio can be maintained by returning the power rollers 8 and 9 to the initial stroke position at offset 0.
[0026]
Here, as shown in FIG. 1, the bearings 51 related to the output disks 6 and 7 of the toroidal transmission units 2 and 3 and the balls 11a of the ball spline 11 related to the input disks 4 and 5 are pulled out of the corresponding disks. In order to prevent this, the tubular stoppers 52 are fitted on the main shaft 10 between the paired input / output disks 4, 6 and 5 and 7, respectively. In response to the displacement, a close fit is tightly fitted on the main shaft 10.
[0027]
A flange portion 52 a is provided on the outer periphery of the tubular stopper 52 so as to project between the paired input / output disks 4, 6 and 5, 7.
The flange portion 52a serves to define the axial limit position of the tubular stopper 52 in the direction away from the bearing 51 by abutting against the end face of the corresponding input disk 5 (4).
In addition, by contacting the end face of the corresponding output disk 7 (6), the other axial direction limit position of the tubular stopper 52 in the direction approaching the bearing 51 is defined.
[0028]
Here, the width W and the position of the flange portion 52a are determined so that it can continue to have a function of preventing the bearing 51 from coming off even at the axial limit position of the tubular stopper 52 in the direction away from the bearing 51, and does not collide with the ball spline 11. In addition, even in the axial limit position of the tubular stopper 52 in the direction approaching the bearing 51, it is determined that this can continue to have the function of preventing the ball 11a from coming off and not come into contact with the bearing 51.
[0029]
Further, the outer peripheral surface at the end of the tubular stopper 52 that has entered the center hole of the disks 4 to 7 because of the width W and position of the flange 52a determined as described above, and the inner peripheral surface of the corresponding disk Set a gap as shown in the figure,
These gaps are the minimum necessary for preventing the inner peripheral surface of the disk from interfering with the outer peripheral surface of the end of the tubular stopper 52 even when the disk is deformed due to the pressure between the power rollers 8 and 9. It is a gap of.
[0030]
According to the tubular stopper 52, it is possible to prevent the bearings 51 related to the output disks 6 and 7 and the balls 11a of the ball spline 11 related to the input disks 4 and 5 from coming out of the corresponding disks.
Further, since the tubular stopper 52 is tightly fitted on the main shaft 10 so as to be able to stroke, the tubular stopper 52 is not twisted by the deformation of the disk due to the pressure between the power rollers. It is possible to avoid the problem that the durability of the toroidal type continuously variable transmission decreases due to sliding contact with or falling off.
[0031]
In the present embodiment, the temporary spindle assembly is configured as shown in FIG. 3 using the tubular stopper 52 described above.
That is, the tubular stopper 52 is used as a temporary assembly sleeve, and the front input disk 4 is pushed in the axial direction toward the loading cam 38 by the flange 52a.
At this time, the cam roller 41 of the loading cam 38 is placed at a position where the input disk 4 can be brought closest to the cam flange 39, and the flange 52a of the tubular stopper (temporary assembly sleeve) 52 slightly compresses the disc spring 61 to prevent rattling. The front input disk 4 is pushed to a position, and a pin 63 is passed through a hole 52b provided in the tubular stopper (temporary assembly sleeve) 52 and a hole 10b provided in the main shaft 10 so as to be aligned at this time. ) 52 is fixed to the main shaft 10 by hook coupling.
[0032]
By fixing the tubular stopper (temporary assembly sleeve) 52, as shown in FIG. 3, the front-side input disk 4 and the loading cam 38 can be temporarily assembled with the main shaft 10 together with the radial and thrust bearing 40. A spindle temporary assembly as shown in FIG. 3 can be formed.
Such a temporary spindle assembly can be configured without requiring any drilling in the input disk 4, so there is no need to increase the size of the input disk 4 for strength compensation, and the size of the toroidal continuously variable transmission can be increased. It can be avoided.
The temporary assembly sleeve is not necessarily used as the tubular stopper 52, and it is needless to say that a dedicated temporary assembly sleeve may be newly provided. However, it is preferable that the temporary assembly sleeve is also used in terms of space and cost.
[0033]
By the way, as described above, when using the flange coupling pin 63 to fix the tubular stopper (temporary assembly sleeve) 52 with respect to the main shaft 10, the tubular stopper (temporary) is provided so that the holes 52b and 10b through which the pin 63 passes are aligned. When the assembly sleeve) 52 is positioned relative to the main shaft 10, the tubular stopper (temporary assembly sleeve) 52 needs to be manually positioned not only in the axial direction but also in the rotational direction, which is troublesome.
[0034]
In order to avoid this trouble, as shown in FIG. 4, the tubular stopper (temporary assembly sleeve) 52 and the input disk 4 are mutually fitted into the mutual contact surfaces, and the hole 52b of the tubular stopper (temporary assembly sleeve) 52 is the main shaft. The concave and convex portions 52c and 4a are formed so as to notify the rotational position of the tubular stopper (temporary assembly sleeve) 52 aligned with the ten holes 10b.
In this case, when positioning the tubular stopper (temporary assembly sleeve) 52 relative to the main shaft 10 so that the holes 52b and 10b are aligned, the concave portion 52c of the tubular stopper (temporary assembly sleeve) 52 becomes the convex portion 4a of the input disk 4. After rotating to fit, the hole 52b can be aligned with 10b simply by pushing the input disk 4 in the axial direction via the tubular stopper (temporary assembly sleeve) 52, and the tubular stopper (temporary assembly sleeve) 52 is rotated. The work is facilitated because there is no need to perform the positioning operation by groping in the direction.
[0035]
In assembling the temporary spindle assembly shown in FIG. 3 to the toroidal-type continuously variable transmission, the tip of the spindle 10 on which the input disk 4 and the loading cam 38 are not temporarily assembled is sequentially moved from the left side of FIG. The output rollers 6, the output shaft 13, the output disc 7, and the input disc 5 are inserted, and the power rollers 8 and 9 are sandwiched between the corresponding input / output discs 4, 6 and 5, 7.
After that, the loading nut 12 is fastened to the tip of the main shaft 10 and the power rollers 8 and 9 are clamped between the input / output disks 4 and 6 and 5 and 7 under preloading by disc springs 61 and 62 as preloading means. Then, the pin 63 is pulled out.
According to this assembling procedure, the spring force of the disc spring 62 is larger than that of the disc spring 61, so that the spring reaction force of the disc spring 61 acting on the pin 63 is released or reduced by tightening the loading nut 12. As a result, the pin 63 can be easily pulled out, and the workability of assembling the temporary spindle assembly can be improved.
[0036]
As described above, since the pin 63 needs to be pulled out when the main spindle temporary assembly is assembled, the positions of the holes 52b and 10b through which the pin 63 penetrates in the temporary assembly state of FIG. Even when it is inserted into the toroidal-type continuously variable transmission, the position is set so as not to overlap with the output disk 6 at the position indicated by the two-dot chain line in FIG.
Thereby, the pull-out operation of the pin 63 at the time of assembling the main spindle temporary assembly can be reliably performed.
[0037]
Further, in many cases, the direction in which the pulling operation of the pin 63 can be suitably performed at the time of assembling the temporary spindle assembly is often specified, and as shown by a two-dot chain line in FIG. A jig 64 is provided in the transmission case 1 so as to be detachable.
As shown in FIG. 5, the jig 64 has a rib 64a having an irregular polygonal shape, and the enlarged diameter end portion 10a of the main shaft 10 is also formed in the same polygonal shape so as to be fitted into the rib. Then, as shown in FIG. 5, the jig 64 is attached to the transmission case 1 with the mounting bolts 65 having different arrangement pitches A and B, thereby defining the direction in which the jig 64 is attached to the transmission case 1. As a result, when the loading nut 12 is tightened, the enlarged diameter end portion 10a of the main shaft 10 is fitted into the rib 64a of the jig 64, thereby positioning the main shaft temporary assembly at a specific position in the rotational direction.
This rotational direction specific position is the rotational position of the spindle temporary assembly in which the pin 63 can be easily pulled out, and the jig 64 is removed from the transmission case 1 after the pin 63 is pulled out.
[0038]
6 and 7 show another embodiment of the present invention. In this embodiment, a tubular stopper (temporary assembly sleeve) 52 is fixed to the main shaft 10 by a key 66 instead of the pin 63 described above.
For this reason, a rectangular hole 10c through which the key 66 penetrates is formed in the main shaft 10 at a position satisfying the above requirements as shown in FIG. 6, and the tubular stopper (temporary assembly sleeve) 52 is cut to receive the key 66. The notch hole 52d is formed as clearly shown in FIG.
[0039]
Thus, when the tubular stopper (temporary assembly sleeve) 52 is fixed to the main shaft 10 with the key 66, the long side of the cross-sectional shape of the key 66 extends in a direction parallel to the main shaft 10 as shown in FIG. It is good to arrange in the direction.
In this case, even if the cross-sectional area of the key 66 is made the same for the key strength, the key insertion hole 10c is a rectangular hole that is long in the axial direction of the main shaft 10, so the influence on the strength of the main shaft 10 is reduced. can do.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional side view showing a main part of a toroidal continuously variable transmission assembled using a temporary spindle assembly according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing the toroidal-type continuously variable transmission as viewed in the direction of the arrow along the line AA in FIG.
3 is an enlarged cross-sectional view showing a temporary spindle temporary assembly used for assembling the toroidal-type continuously variable transmission of FIGS. 1 and 2. FIG.
FIG. 4 is a perspective view showing a modification of the mating surface shape of the tubular stopper (temporary assembly sleeve) and the front side input disc in the temporary spindle assembly.
FIG. 5 is a front view showing a jig for positioning in the rotational direction when assembling the temporary spindle assembly.
FIG. 6 is a side view showing another configuration example of means for fixing a tubular stopper (temporary assembly sleeve) in the main shaft temporary assembly to the main shaft.
FIG. 7 is a perspective view showing a tubular stopper (temporary assembly sleeve) in the same configuration example.
FIG. 8 is a side view showing still another configuration example of means for fixing a tubular stopper (temporary assembly sleeve) in the main shaft temporary assembly to the main shaft.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Transmission case 2 Front side toroidal transmission unit 3 Rear side toroidal transmission unit 4 Input disk 5 Input disk 6 Output disk 7 Output disk 8 Power roller 9 Power roller
10 Spindle
10a Modified enlarged diameter end
10b Pin penetration hole
10c Key penetration hole
11 balls
12 Loading nut
13 Hollow output shaft
14 Trunnion
15 Trunnion
16 Plate upper link
17 Plate-like lower link
18 Spherical joint
19 Rotating bearing
27 Upper link support pin
28 Lower link support pin
34 Output gear
36 Counter gear
37 Counter shaft
38 Loading cam
42 Servo piston
43 Control valve
51 Bearing
52 Tubular stopper (temporary assembly sleeve)
52a Flange
52b Pin penetration hole
52c Positioning recess
52d cutout
61 Belleville spring (preloading means)
62 Belleville spring (preloading means)
63 pin (閂 coupling element)
64 Spindle temporary assembly positioning jig
64a Profile rib
66 key (閂 coupling element)

Claims (6)

A pair of discs are fitted on the main shaft, one of the discs is rotatably engaged on the main shaft, and the other disc is not strokeable on the main shaft and is supported rotatably by a bearing. A power roller is interposed between the two discs to transmit the input rotation to the one disc and to thrust the one disc toward the other disc by thrust according to the transmission torque to clamp the power roller between the discs. In a toroidal type continuously variable transmission provided with a loading cam and configured to transfer power between the disks by the power roller,
Temporary assembly in which the one disk and the loading cam are temporarily assembled with respect to the main shaft by pushing the one disk in the axial direction of the main shaft until the pressurizing means disposed on the back surface of the one disk is compressed. A sleeve is fitted to the main shaft, the temporary assembly sleeve is fixed to the main shaft at a position where the temporary assembly state is maintained , and
A temporary stopper for a main shaft of a toroidal-type continuously variable transmission , wherein a tubular stopper fitted to the main shaft is used as the temporary assembly sleeve to prevent the bearing that rotatably supports the other disc on the main shaft. Assembly. 2. The main spindle temporary assembly according to claim 1, wherein the main shaft and the temporary assembly sleeve are fixed to each other by a saddle coupling element, and are respectively fitted to the mutual contact surfaces of the one disk and the temporary assembly sleeve. A main shaft temporary assembly for a toroidal-type continuously variable transmission, characterized in that an uneven portion is formed to notify that the main shaft and the saddle coupling element insertion holes of the temporary assembly sleeve are aligned . 3. The main spindle temporary assembly according to claim 1, wherein the main shaft and the temporary assembly sleeve are fixed by a saddle coupling element, and the insertion position of the saddle coupling element with respect to the main shaft and the temporary assembly sleeve is defined as a toroidal. A temporary spindle temporary assembly for a toroidal continuously variable transmission, characterized in that it is positioned so as not to overlap the other disk even after the spindle temporary assembly is assembled to the type continuously variable transmission. A pair of discs are fitted on the main shaft, one of the discs is rotatably engaged on the main shaft, and the other disc is not strokeable on the main shaft and is supported rotatably by a bearing. A power roller is interposed between the two discs to transmit the input rotation to the one disc and to thrust the one disc toward the other disc by thrust according to the transmission torque to clamp the power roller between the discs. In a toroidal type continuously variable transmission provided with a loading cam and configured to transfer power between the disks by the power roller,
Temporary assembly in which the one disk and the loading cam are temporarily assembled with respect to the main shaft by pushing the one disk in the axial direction of the main shaft until the pressurizing means disposed on the back surface of the one disk is compressed. A sleeve is fitted to the main shaft, the temporary assembly sleeve is fixed to the main shaft at a position where the temporary assembly state is maintained , and
The main shaft and the temporary assembly sleeve are fixed by a saddle coupling element, and the main shaft and the temporary assembly sleeve are fitted into the mutual contact surfaces of the one disk and the temporary assembly sleeve, respectively. Form a concave and convex part that informs that the insertion holes are aligned, and make a temporary spindle assembly,
When assembling the main spindle temporary assembly to the toroidal-type continuously variable transmission, the end of the main spindle without the one disk and the loading cam is inserted into the other disk, and the power roller is sandwiched between the two disks. Tightening a loading nut at the end of the main shaft to clamp the power roller between the two disks under preloading by preloading means and reducing the pressure acting on the saddle coupling element, and then pulling out the saddle coupling element; A method of assembling the spindle temporary assembly characterized by the above. A pair of discs are fitted on the main shaft, one of the discs is rotatably engaged on the main shaft, and the other disc is not strokeable on the main shaft and is supported rotatably by a bearing. A power roller is interposed between the two discs to transmit the input rotation to the one disc and to thrust the one disc toward the other disc by thrust according to the transmission torque to clamp the power roller between the discs. In a toroidal type continuously variable transmission provided with a loading cam and configured to transfer power between the disks by the power roller,
Temporary assembly in which the one disk and the loading cam are temporarily assembled with respect to the main shaft by pushing the one disk in the axial direction of the main shaft until the pressurizing means disposed on the back surface of the one disk is compressed. A sleeve is fitted to the main shaft, the temporary assembly sleeve is fixed to the main shaft at a position where the temporary assembly state is maintained , and
The main shaft and the temporary assembly sleeve are fixed with a saddle coupling element, and the insertion position of the saddle coupling element with respect to the main shaft and the temporary assembly sleeve is set after the main shaft temporary assembly is assembled to the toroidal continuously variable transmission. Forming a spindle temporary assembly at a position not overlapping the other disk,
When assembling the main spindle temporary assembly to the toroidal-type continuously variable transmission, the end of the main spindle without the one disk and the loading cam is inserted into the other disk, and the power roller is sandwiched between the two disks. Tightening a loading nut at the end of the main shaft to clamp the power roller between the two disks under preloading by preloading means and reducing the pressure acting on the saddle coupling element, and then pulling out the saddle coupling element; A method of assembling the spindle temporary assembly characterized by the above. 6. The method of assembling a temporary spindle assembly according to claim 4 or 5 , wherein a jig for positioning the temporary spindle assembly at a specific position in the rotational direction when the loading nut is tightened is detachably provided on the transmission case. A method of assembling a temporary spindle assembly, wherein the position is set to a rotational position at which the hook coupling element can be easily pulled out, and the jig is removed from the transmission case after the hook coupling element is pulled out.

Images