JP2010180937A - Toroidal type continuously variable transmission - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toroidal type transmission simplifying a working process relating to assembling by a simple structure, and reducing cost as compared with a former toroidal type transmission. <P>SOLUTION: A variator includes a lever 32 to which a carriage is connected and fixed and which includes an introduction oil path 37 for supplying traction oil to a roller through the carriage, and a hollow support shaft 34 on which a discharge port 49 discharging traction oil supplied to a communication path 35 is formed and to which a hinge 42 of the lever 32 is connected. A pair of seal members 51 are retained between a sleeve 44 and itself in a communication through-hole 43 of the hinge part 42, and a small diameter part 47 forming an annular space 48 divided by each seal member 51 is formed in a space between the hollow support shaft 34 and itself. The introduction oil path 37 of the lever 32 is opened to an inner circumference surface of a small diameter part 47 and communicates with a discharge port 49 of the hollow support shaft 34 via the annular space 48. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a toroidal type continuously variable transmission.

  Conventionally, as a variator constituting the main part of a toroidal-type continuously variable transmission, an input disk fixed to an input shaft and an output disk fixed to an output shaft arranged to be relatively rotatable on the same axis with respect to the input shaft And a roller disposed in a toroidal space formed between these two disks (see, for example, Patent Documents 1 to 3). The torque is transmitted from the input disk to the output disk via a roller by rotating the input shaft in a state where a terminal load is applied to the input disk and the output disk in the axial direction by hydraulic pressure. Yes.

  Such a roller is provided on the lever via a carriage that rotatably supports the roller. The roller is configured to incline according to the force received from each track surface by being moved in the track surface of the input disk and the output disk by the rotation of the lever. In the variator as described above, the contact position (effective radius) between the roller, the input disk, and the output disk is changed by the inclination of the roller, so that a continuously variable transmission ratio can be obtained.

  By the way, the traction oil for torque transmission and cooling is supplied to the roller from the hydraulic control device through an introduction oil passage formed in the lever. Therefore, the lever is provided in the variator so as to be rotatable and to be able to supply traction oil from the hydraulic control device into the introduction oil passage.

  Specifically, as shown in FIG. 6, a hollow support shaft 82 is fixed to the variator housing 81. The hollow support shaft 82 is formed with a conduction path 83 along the central axis thereof, and a discharge port 84 is formed in the side wall thereof penetrating in the radial direction. A hydraulic control device 85 is connected to the base end of the conduction path 83. Then, traction oil is supplied from the hydraulic control device 85 to the conduction path 83 of the hollow spindle 82 and is discharged from the discharge port 84.

  A lever 87 is rotatably connected to the hollow support shaft 82 fixed to the housing 81. Specifically, a hinge portion 88 is formed at the base end portion of the lever 87, and an insertion hole 89 that is open on both sides in the axial direction is formed through the hinge portion 88. A positioning hole 90 penetrating in the radial direction is formed in the side wall of the hinge portion 88. Further, an introduction oil passage 91 is formed through the lever 87 along the axial direction thereof, and a base end of the introduction oil passage 91 opens into the insertion hole 89.

  The hinge portion 88 of the lever 87 is connected to the hollow support shaft 82 via a pair of sleeves 93 that are rotatably inserted into the hollow support shaft 82. The pair of sleeves 93 are respectively formed with flange portions 94 extending outward in the radial direction at one end. And the hinge part 88 of the lever 87 is slidably clamped from both sides by the flange part 94 formed in both the sleeves 93, respectively. The hollow support shaft 82 is fixed to the housing 81 by being aligned at a circumferential position so that the discharge port 84 substantially faces the introduction oil passage 91 of the lever 87.

  In a space formed by the hollow support shaft 82, the pair of sleeves 93 and the hinge portion 88 of the lever 87, a cylindrical collar 95 is disposed so as to be rotatable with respect to the hollow support shaft 82. As shown in FIGS. 7 and 8, the collar 95 has a communication hole 96 extending in the circumferential direction over a predetermined angle range and penetrating in the radial direction, and a positioning formed at a position substantially opposite to the communication hole 96. A hole 97 is formed.

  As shown in FIG. 6, the collar 95 has a communication hole 96 formed between the introduction oil passage 91 of the lever 87 and the discharge port 84 of the hollow support shaft 82 by a ball 98 driven into the positioning hole 90 of the hinge portion 88. It is positioned so as to be positioned between and fixed to the lever 87.

  Further, between the insertion hole 89 and the hollow support shaft 82, a pair of seal members 99 such as an O-ring for sealing traction oil are disposed on both sides in the axial direction of the collar 95, and between the sleeve 93 and the collar 95. Is held by. Each seal member 99 is inserted through the hollow support shaft 82. A slide bearing 100 is interposed between each seal member 99 and the hollow support shaft 82.

  Thereby, the introduction oil passage 91 of the lever 87 is communicated with the discharge port 84 of the hollow support shaft 82 through the communication hole 96 of the collar 95. Accordingly, traction oil is supplied into the introduction oil passage 91 from the discharge port 84 through the communication hole 96. Since the communication hole 96 is formed extending in the circumferential direction over a predetermined angle range, the traction oil is supplied even when the lever 87 and the collar 95 are rotated with respect to the hollow support shaft 82. It has become.

JP 2006-46375 A JP 2007-232058 JP 2008-169869 A

  However, in the conventional configuration, the collar 95 must be positioned and assembled with respect to the lever 87 in the circumferential direction as described above. Further, the hollow support shaft 82 also has to be fixed to the housing 81 with the circumferential position of the discharge port 84 aligned with the lever 87 and the collar 95, and the work process relating to the assembly of the variator becomes complicated. was there.

Further, in order to position the collar 95 in the circumferential direction with respect to the lever 87, the ball 98 is required, and there is a problem that the number of parts increases.
Furthermore, since it is necessary to form the collar 95 by forming the communication hole 96 and the positioning hole 97 in the cylindrical member, this has been a cause of cost increase.

  The present invention has been made in order to solve the above-mentioned problems, and its purpose is toroidal type that can simplify the work process related to assembly with a simple configuration and can reduce the cost compared to the conventional one. It is to provide a transmission.

  In order to achieve the above object, an invention according to claim 1 includes an input disk fixed to an input shaft, and an output disk fixed to an output shaft arranged to be rotatable relative to the input shaft on the same axis. Arranged in a toroidal space formed between them, a roller for transmitting torque from the input disk to the output disk, a carriage for rotatably supporting the roller, the carriage being connected and fixed, and the carriage being A feed oil passage for supplying traction oil to the roller via the lever, and a lever that moves the carriage by turning around a hinge portion in which an insertion hole is formed and connected to a hydraulic control device A hollow shaft that is connected to the hinge portion of the lever, and is formed with a discharge port that discharges the traction oil in communication with the conductive path. A toroidal type non-equipment provided with a pair of seal members interposed between the insertion hole and the hollow support shaft, and a sleeve inserted from the axial end of the insertion hole and in contact with the pair of seal members In the step transmission, the insertion hole holds the pair of seal members between the sleeve and forms an annular space defined by the pair of seal members between the hollow support shafts. The small diameter portion is formed, and the introduction oil passage of the lever opens to the small diameter portion and communicates with the discharge port of the hollow support shaft through the annular space.

  According to the above configuration, since the pair of seal members are respectively held by the sleeve and the small diameter portion and seal between the insertion hole of the hinge portion and the hollow support shaft, it is not necessary to provide a collar as in the conventional case. Therefore, it is possible to eliminate the process of positioning and assembling the collar in the circumferential direction with respect to the lever and simplify the work process related to the assembly of the variator. In addition, since the collar positioning ball is not required, the number of parts can be reduced, the cost can be reduced as compared with the conventional case, and the variator can be configured simply.

  In addition, since the introduction oil passage is communicated with the discharge port via the annular space, the introduction oil passage is hollow regardless of the relative position in the circumferential direction between the introduction oil passage of the lever and the discharge port of the hollow support shaft. Traction oil is supplied from the support shaft into the introduction oil passage. Therefore, even if the hollow support shaft is fixed without adjusting the circumferential position of the discharge port, the lever can be fixed to the hollow support shaft so that the lever can be rotated and traction oil can be supplied into the introduction oil passage. Thereby, the work process which concerns on the assembly of a variator can be simplified.

  According to a second aspect of the present invention, in the toroidal-type continuously variable transmission according to the first aspect, the small-diameter portion has a constant inner diameter that is larger than the outer diameter of the hollow support shaft and along the axial direction. The gist of the present invention is that a holding member that closes both sides in the axial direction of the annular space is interposed between the small diameter portion and the pair of seal members.

  According to the above configuration, since the small diameter portion is formed with a constant inner diameter in the axial direction, for example, when an enlarged diameter portion having an inner diameter larger than the small diameter portion is formed on the axial center side of the small diameter portion. Compared with, the insertion hole can be easily formed. In addition, each sealing member can be reliably held by the holding member and the sleeve that close both axial sides of the annular space. Since the holding member only needs to hold each seal member with the sleeve, it does not need to be aligned like a conventional collar, and the work process related to assembly does not become complicated.

  ADVANTAGE OF THE INVENTION According to this invention, it is possible to simplify the work process which concerns on an assembly with a simple structure, and can provide the toroidal type transmission which can reduce cost more than before.

The skeleton figure which shows the outline of the variator of a toroidal type continuously variable transmission. The side view which shows the outline of a tilting apparatus. The partial cross section figure which shows the connection structure of the lever. The partial cross section figure which shows the connection structure of another lever. The partial cross section figure which shows the connection structure of another lever. The partial cross section figure which shows the connection structure of the conventional lever. FIG. Color perspective view

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 1 shows a toroidal variator (hereinafter simply referred to as a variator) 1 constituting the main part of a toroidal-type continuously variable transmission. As shown in the figure, a variator 1 according to this embodiment is a full toroidal continuously variable transmission, and includes an input shaft 11 that is drivingly connected to a vehicle engine (not shown), and both end portions of the input shaft 11. Input disks 12a and 12b are provided in the vicinity.

  On the opposing surfaces of both the input disks 12a and 12b, annular recesses 13a and 13b with the central axis as the center are formed. The recesses 13a and 13b are formed in a circular arc shape in cross section, and the inner peripheral surfaces of the recesses 13a and 13b are track surfaces S1a and S1b. Further, both the input disks 12a and 12b are spline-fitted to the input shaft 11, and are supported so as to be movable in the axial direction with respect to the input shaft 11 and non-rotatable in the circumferential direction. Therefore, both the input disks 12a and 12b are provided so as to be able to rotate integrally with the input shaft 11.

  The right input disk 12b disposed on the right side in FIG. 1 is in contact with the stopper 14 formed on the input shaft 11 at the right side surface, and further movement in the right direction is restricted in FIG. Further, the left input disk 12a disposed on the left side in FIG. 1 is configured to be applied with a pressing force in the right direction by the hydraulic device 15.

  Between the input disks 12 a and 12 b of the input shaft 11, a cylindrical output shaft cylinder 16 as an output shaft is supported so as to be rotatable relative to the input shaft 11 on the same axis. Output disks 17a and 17b are fixed to both ends of the output shaft cylinder 16, respectively.

  On both surfaces of the output disks 17a and 17b opposite to the opposing surfaces, annular recesses 18a and 18b with the central axis as the center are formed. The annular recesses 18a and 18b are formed in a circular arc shape in cross section, and the inner peripheral surfaces of the recesses 18a and 18b are track surfaces S2a and S2b.

  The space formed between the track surface S1a of the left input disk 12a and the track surface S2a of the left output disk 17a, and the space between the track surface S1b of the right input disk 12b and the track surface S2b of the right output disk 17b. The spaces formed by are designated as toroidal spaces 19a and 19b, respectively.

  Disk-shaped rollers 21 are arranged in both toroidal spaces 19a and 19b. In this embodiment, three rollers 21 are arranged at equal intervals in the circumferential direction in each toroidal space 19a, 19b. For convenience of explanation, FIG. 1 shows one roller 21 in each toroidal space 19a, 19b.

  Each roller 21 is supported so as to be rotatable with respect to a rotating shaft 23 (see FIG. 2) attached to a rectangular frame-shaped carriage 22. Each roller 21 is moved in the tangential direction via a carriage 22 in the toroidal spaces 19a and 19b. As the input shaft 11 rotates, torque is transmitted from the input disks 12a and 12b to the output disks 17a and 17b via the rollers 21.

  A sprocket gear 25 is fixed between the output disks 17a and 17b in the output shaft cylinder 16. The sprocket gear 25 meshes with a chain 26 so that torque transmitted to the output shaft cylinder 16 via the chain 26 is output to the outside.

  More specifically, in the variator 1 configured as described above, the input shaft 11 rotates with a terminal load applied in the axial direction to the input disks 12a and 12b and the output disks 17a and 17b by the hydraulic device 15. Thus, torque is transmitted from the input disks 12a and 12b to the output disks 17a and 17b via the rollers 21. Further, by the movement of the carriage 22 by the operation of the tilting device 31 described later, the roller 21 moves in the track surfaces S1a, S1b, S2a, S2b of the input disks 12a, 12b and the output disks 17a, 17b. It inclines according to the force received from track surface S1a, S1b, S2a, S2b. Then, when the roller 21 is inclined, the contact position (effective radius) between the roller 21 and the input disks 12a and 12b and the output disks 17a and 17b changes, and a continuously variable transmission ratio is obtained.

Next, the configuration of the tilting device 31 that moves the roller 21 through the carriage 22 in each track surface S1a, S1b, S2a, S2b will be described.
As shown in FIG. 2, the tilting device 31 includes a lever 32 that supports the carriage 22 and a hydraulic cylinder 33 that rotates the lever 32.

  The lever 32 is formed in a substantially rod shape, and the base end side thereof is rotatably supported by the hollow support shaft 34. The tip of the lever 32 is connected and fixed to one side surface of the carriage 22.

  Further, the hollow support shaft 34 is formed with a conduction path 35 for supplying traction oil to the roller 21 along the central axis, and the lever 32 is formed with an introduction oil path 37 communicating with the conduction path 35. ing. The introduction oil passage 37 communicates with a discharge oil passage 38 formed on one side surface of the carriage 22.

  The lever 32 is supplied with traction oil from the conduction path 35 of the hollow spindle 34 to the introduction oil path 37 regardless of the rotation state of the lever 32, and is traction from the discharge oil path 38 of the carriage 22 to the roller 21. Oil is supplied.

  Specifically, as shown in FIG. 3, the hollow support shaft 34 is fixed to the housing 41 of the variator 1. A cylindrical hinge portion 42 is formed at the base end portion of the lever 32, and an insertion hole 43 that is open on both sides in the axial direction of the hinge portion 42 is formed in the hinge portion 42. The hinge portion 42 of the lever 32 is connected to the hollow support shaft 34 via a pair of sleeves 44 that are rotatably inserted into the hollow support shaft 34. Each of the pair of sleeves 44 is formed with a flange portion 45 at one end. And the hinge part 42 of the lever 32 is slidably clamped from both sides by a pair of flange parts 45 formed on both sleeves 44.

  On the inner peripheral surface of the insertion hole 43 of the lever 32, a small-diameter portion 47 protruding into a space formed by the hollow support shaft 34, the insertion hole 43 and the pair of sleeves 44 is formed. The small diameter portion 47 of the present embodiment is formed so that the inner diameter is larger than the outer diameter of the hollow support shaft 34 and is constant in the axial direction. Accordingly, the small diameter portion 47 and the hollow support shaft 34 are separated from each other, and an annular space 48 is formed between the small diameter portion 47 and the hollow support shaft 34. An introduction oil passage 37 is opened on the inner peripheral surface of the small diameter portion 47. A discharge port 49 communicating with the conduction path 35 is formed through the outer peripheral surface of the hollow support shaft 34 facing the annular space 48.

  Between the insertion hole 43 and the hollow support shaft 34, a pair of seal members 51 such as an O-ring for sealing traction oil are disposed on both sides in the axial direction of the small diameter portion 47, and between the sleeve 44 and the small diameter portion 47. Is held by. In the present embodiment, annular washers 52 as holding members that close both axial sides of the annular space 48 are interposed between the small diameter portion 47 and the pair of seal members 51. Each seal member 51 is inserted through the hollow spindle 34 and held by a sleeve 44 and a washer 52, respectively. Thus, both end portions in the axial direction of the annular space 48 sandwiched between the seal members 51 are liquid-tightly divided by the seal members 51. A sliding bearing 53 is interposed between each seal member 51 and the hollow support shaft 34.

  The conduction path 35 of the hollow spindle 34 is connected to a hydraulic control device 54, and traction oil is supplied from the hydraulic control device 54. Accordingly, the traction oil is discharged from the conduction path 35 to the annular space 48 via the discharge port 49 and is supplied to the introduction oil path 37 of the lever 32 via the annular space 48. Thereby, the traction oil is supplied from the hydraulic control device 54 to the introduction oil passage 37 of the lever 32 regardless of the rotation position of the lever 32, and the traction oil is supplied to the roller 21.

  As shown in FIG. 2, the hydraulic cylinder 33 includes a cylinder case 61 and a piston 62. The cylinder case 61 is formed in a substantially cylindrical shape and is fixed to the housing 41 (not shown in FIG. 2) of the variator 1. The piston 62 is disposed in the cylinder case 61 and divides the inside of the cylinder case 61 into a first oil chamber 63 and a second oil chamber 64. A piston rod 65 connected to the central portion of the lever 32 is fixed to the piston 62. The hydraulic cylinder 33 moves the piston 62 by the hydraulic pressure supplied to the first and second oil chambers 63 and 64 via a hydraulic circuit (not shown), and rotates the lever 32 about the hollow support shaft 34. It is like that.

As described above, according to the present embodiment, the following effects can be obtained.
(1) The variator 1 includes a lever 32 having an introduction oil passage 37 for supplying traction oil to the roller 21 through the carriage 22 and a traction oil supplied to the conduction passage 35. And a hollow support shaft 34 to which the hinge portion 42 of the lever 32 is connected. The pair of seal members 51 is held between the sleeve 44 and the insertion hole 43 of the hinge portion 42, and a small diameter is formed between the hollow support shaft 34 and the annular space 48 defined by the seal members 51. Part 47 was formed. The introduction oil passage 37 of the lever 32 was opened to the inner peripheral surface of the small diameter portion 47 and communicated with the discharge port 49 of the hollow support shaft 34 via the annular space 48. Therefore, it is not necessary to provide the collar 95 (see FIGS. 6 to 8) in order to hold each sealing member 99 as in the prior art. Therefore, the process of positioning the collar 95 with respect to the lever 32 in the circumferential direction and assembling it can be eliminated, and the work process related to the assembly of the variator 1 can be simplified. In addition, since the positioning ball 98 for the collar 95 is not required, the number of parts can be reduced, the cost can be reduced as compared with the conventional case, and the variator 1 can be simplified.

  In addition, since the introduction oil passage 37 communicates with the discharge port 49 via the annular space 48, what is the relative position in the circumferential direction between the introduction oil passage 37 of the lever 32 and the discharge port 49 of the hollow support shaft 34. Even in this case, traction oil is supplied from the hollow support shaft 34 into the introduction oil passage 37. Therefore, even if the hollow support shaft 34 is fixed without adjusting the circumferential position of the discharge port 49, the lever 32 is fixed to the hollow support shaft 34 so that the lever 32 can be rotated and traction oil can be supplied into the introduction oil passage 37. be able to. Thereby, the work process concerning the assembly of the variator 1 can be further simplified.

  (2) The inner diameter of the small-diameter portion 47 is formed to be larger than the outer diameter of the hollow support shaft 34 and have a constant inner diameter in the axial direction, and the annular space 48 is formed between the small-diameter portion 47 and each seal member 51. Washers 52 for closing both sides in the axial direction were interposed. Since the small-diameter portion 47 is formed with a constant inner diameter in the axial direction as described above, for example, a large-diameter portion having an inner diameter larger than that of the small-diameter portion 47 is formed on the axial center side of the small-diameter portion 47. Compared to the above, the insertion hole 43 can be easily formed, and the manufacturing cost of the lever 32 can be reduced. In addition, each seal member 51 can be reliably held by the washer 52 and the sleeve 44 that close both axial sides of the annular space 48. The washer 52 only needs to be able to hold the seal members 51 between the sleeve 44 and the washer 52. Therefore, the washer 52 does not have to be aligned like the conventional collar 95, and the assembly work process is not complicated.

In addition, you may implement this embodiment in the following aspects.
In the above embodiment, the small-diameter portion 47 is formed to have a larger inner diameter than the outer diameter of the hollow support shaft 34 and a constant inner diameter in the axial direction, but this is not restrictive. For example, as shown in FIG. 4, the small-diameter portion 71 is formed with an inner diameter substantially equal to the outer diameter of the hollow support shaft 34, and the outer diameter of the hollow support shaft 34 is closer to the center in the axial direction of the small-diameter portion 71. Alternatively, an enlarged diameter portion 72 having a small inner diameter may be formed. The introduction oil passage 37 opens on the inner peripheral surface of the enlarged diameter portion 72. By doing in this way, each seal member 51 and the slide bearing 53 can be hold | maintained between the small diameter part 71 and the sleeve 44, without interposing the washer 52, and a number of parts can be reduced.

  In the above-described embodiment, the insertion hole 43 is formed so as to open on both sides in the axial direction of the hollow support shaft 34. However, the present invention is not limited to this. For example, as shown in FIG. 5, the insertion hole 75 may be opened only at one end in the axial direction. In this case, the sleeve 44, the seal member 51, and the slide bearing 53 are provided only on the opening end side of the insertion hole 75.

  In the above embodiment, the washer 52 is used as the holding member. However, the present invention is not limited to this, and any one can be used as long as the seal member 51 can be held between the sleeve 44 and both sides of the annular space 48 in the axial direction. Such a member may be used.

In the above embodiment, one discharge port 49 is formed in the hollow support shaft 34, but the present invention is not limited thereto, and two or more discharge ports 49 may be formed.
In the above embodiment, the terminal load is applied to the left input disk 12a by the hydraulic device 15. However, the present invention is not limited to this, and the terminal load is applied to the output disks 17a and 17b as in Patent Document 3 described above. It may be configured.

In the above embodiment, the variator 1 is configured as a full toroidal variator, but is not limited thereto, and may be a half toroidal variator.
Next, technical ideas that can be understood from the above embodiments and other examples will be described below together with their effects.

  (A) The small diameter portion is formed to have an inner diameter equal to the outer diameter of the hollow support shaft, and an inner diameter smaller than the outer diameter of the hollow support shaft is provided on the axially central side of the small diameter portion. The toroidal continuously variable transmission according to claim 1, wherein an enlarged diameter portion is formed. According to this configuration, the introduction oil passage is communicated with the discharge port via the annular gap formed between the enlarged diameter portion and the hollow support shaft. And since a small diameter part is formed equally with the outer diameter of a hollow spindle, a pair of sealing members can be reliably hold | maintained by a small diameter part and a sleeve. Therefore, it is not necessary to interpose a holding member, and an increase in the number of parts can be prevented.

  DESCRIPTION OF SYMBOLS 1 ... Variator, 11 ... Input shaft, 12a, 12b ... Input disk, 17a, 17b ... Output disk, 19a, 19b ... Toroidal space, 21 ... Roller, 22 ... Carriage, 32 ... Lever, 34 ... Hollow support shaft, 35 DESCRIPTION OF SYMBOLS ... Conducting path, 37 ... Introducing oil path, 42 ... Hinge part, 43, 75 ... Insertion hole, 44 ... Sleeve, 47, 71 ... Small diameter part, 48 ... Annular space, 49 ... Discharge port, 51 ... Seal member, 54 ... Hydraulic control device, 72...

Claims (2)

The input disk is disposed in a toroidal space formed between an input disk fixed to the input shaft and an output disk fixed to the output shaft arranged to be rotatable relative to the input shaft on the same axis. A roller for transmitting torque to the output disk from
A carriage that rotatably supports the roller;
The carriage is connected and fixed, and has an introduction oil passage for supplying traction oil to the roller through the carriage, and is rotated by turning around a hinge portion in which an insertion hole is formed. A lever to move the carriage;
A hollow shaft that is connected to the hydraulic control device, a discharge port that discharges the traction oil in communication with the conductive channel, and to which the hinge portion of the lever is coupled;
A pair of seal members interposed between the insertion hole and the hollow support shaft;
A toroidal continuously variable transmission that includes a sleeve that is inserted from an axial end of the insertion hole and that contacts the pair of seal members;
The insertion hole is formed with a small diameter portion that holds the pair of seal members with the sleeve and forms an annular space defined by the pair of seal members with the hollow support shaft,
The toroidal continuously variable transmission characterized in that an introduction oil passage of the lever opens to the small-diameter portion and communicates with the discharge port of the hollow support shaft through the annular space. The small diameter portion is formed to have a constant inner diameter that is larger than the outer diameter of the hollow support shaft and along the axial direction,
The toroidal continuously variable transmission according to claim 1, wherein a holding member that closes both axial sides of the annular space is interposed between the small diameter portion and the pair of seal members.

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