JP2006002791A - Toroidal-type continuously variable transmission and continuously variable transmission - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a structure capable of facilitating assembly work of a module 45 without using members excluding components such as a spacer composing the module 45. <P>SOLUTION: Projecting sections 51 and 51 are arranged at a corner of a lower surface of an actuator body 15 composing the module 45. A precess cam 50 arranged in a state of projection from the lower surface of the actuator body 15 is located on a place upper than a virtual surface α which is made by connecting together with lower end faces of respective projecting sections 51 and 51. The assembly work of the module 45 is carried out in a state for bumping the lower end faces of respective projecting sections 51 and 51 against an upper surface of a worktable. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The toroidal-type continuously variable transmission and continuously variable transmission according to the present invention are used as an automatic transmission for automobiles or as a transmission for adjusting the operating speed of various industrial machines such as pumps and generators.

  A toroidal continuously variable transmission is known as a type of transmission that constitutes a transmission for an automobile, and is partially implemented. Such a toroidal type continuously variable transmission that has already been implemented in part is called a so-called double cavity type in which power transmission from the input unit to the output unit is divided into two systems arranged in parallel with each other. It is what has been. Such a toroidal type continuously variable transmission has been conventionally described in many publications such as Patent Documents 1 to 3. Further, Patent Document 4 describes a structure that can be reduced in size and weight as a whole toroidal type continuously variable transmission by using an integrated output side disk. Further, Patent Document 5 describes a structure capable of realizing a toroidal continuously variable transmission and continuously variable transmission that can be reduced in size and weight and that can be easily assembled. The present invention makes it possible to further facilitate the assembling work by improving the structure described in Patent Document 5. The structure described in Patent Document 5 will be described with reference to FIGS.

  The continuously variable transmission described in Patent Document 5 includes a toroidal continuously variable transmission unit 1 corresponding to the toroidal continuously variable transmission described in the claims, and first to third planetary gear transmission units. 2 and 4, and includes an input shaft 5 and an output shaft 6 corresponding to the rotation shaft described in the claims. Further, a transmission shaft 7 is provided between the input shaft 5 and the output shaft 6 so as to be concentric with the shafts 5 and 6 and freely rotatable relative to the shafts 5 and 6. The third planetary gear type transmission unit 4 is connected to the transmission shaft in a state where the first and second planetary gear type transmission units 2 and 3 are spanned between the input shaft 5 and the transmission shaft 7. 7 and the output shaft 6 are provided in a state of being spanned.

  Of these, the toroidal type continuously variable transmission unit 1 includes a pair of input side disks 8a and 8b, each of which is an outer disk described in the claims, and an integrated output side disk 9 which is also an inner disk, A plurality of power rollers 10 and 10 are provided. The pair of input side disks 8a and 8b are coupled to each other through the input shaft 5 so as to be concentric with each other and capable of synchronous rotation. The output side disk 9 is concentric with the input side disks 8a and 8b between the input side disks 8a and 8b, and can freely rotate relative to the input side disks 8a and 8b. It is supported. Further, a plurality of each of the power rollers 10 and 10 are sandwiched between both axial side surfaces of the output side disk 9 and one side surface of the input side disks 8a and 8b in the axial direction. Yes. Then, power is transmitted from the input disks 8a, 8b to the output disk 9 while rotating with the rotation of the input disks 8a, 8b.

  The output side disk 9 is rotatably supported at both ends in the axial direction by rolling bearings such as a pair of ball bearings 11, 11 each having a thrust angular contact. The power rollers 10 and 10 are rotatably supported on the inner surfaces of the trunnions 12 and 12, respectively. Further, in order to support both ends of each trunnion 12, 12, a pair of support plates 13a, 13b are connected to the inside of the casing 14, parallel to each other and spaced apart in the vertical direction, and a connection. It is provided via a plate 16 and a pair of support columns 17 and 17. Each of the support columns 17 and 17 is formed by connecting a pair of support post portions 18 a and 18 b concentrically provided on the opposite side in the radial direction across the input shaft 5 by an annular support ring portion 19. . The input shaft 5 passes through the inside of the support ring portion 19.

  The lower ends of the columns 17 and 17 are coupled and fixed to the upper surface of the actuator body 15 with a plurality of bolts 20 and 20 and concave and convex fittings, with the mounting position and the mounting direction being regulated. ing. On the other hand, the upper ends of the columns 17 and 17 are coupled and fixed to the lower surface of the connecting plate 16 by bolts 21 and 21, respectively, in a state where the mounting position is also restricted based on the uneven fitting. In this way, among the support post portions 18a and 18b provided on the pair of support columns 17 and 17 spanned between the upper surface of the actuator body 15 and the lower surface of the connecting plate 16, the lower side of the support post portions 18a and 18b is provided. Support holes 22a and 22a formed in the lower support plate 13a of the pair of support plates 13a and 13b are externally fitted to the support post portions 18a and 18a without rattling. Further, the support holes 22b, 22b formed in the upper support plate 13b of the pair of support plates 13a, 13b are externally fitted to the upper support post portions 18b, 18b without rattling.

  Of the actuator body 15 and the connecting plate 16, the actuator body 15 is fixed to the lower portion of the casing 14. For this purpose, step portions 23a and 23b are provided near the lower end opening of the inner surface of the casing 14, and bolt insertion holes are provided at both ends of the actuator body 15 in the width direction (front and back direction in FIGS. 4 to 5 and left and right direction in FIG. 6). 24 and 24 (see FIG. 7) are formed. When the actuator body 15 is fixed in the casing 14, portions near both ends in the upper surface width direction of the actuator body 15 abut against the stepped portions 23 a and 23 b. Then, bolts (not shown) inserted through the bolt insertion holes 24, 24 from below are screwed into screw holes opened in the step portions 23a, 23b and further tightened. The actuator body 15 is positioned with respect to the casing 14 by a positioning pin (not shown). On the other hand, the connecting plate 16 is installed in the casing 14 in a state in which the position in the length direction (the left-right direction in FIGS. 4 to 5 and the front and back direction in FIG. 6) and the width direction are regulated. In order to perform this position restriction, positioning sleeves 26 and 26 are stretched between the upper surface of the connecting plate 16 and the lower surface of the top plate portion 25 of the casing 14. Both end portions in the axial direction of the output side disk 9 are respectively attached to the support ring portions 19 and 19 provided in the middle portion of the pair of support columns 17 and 17 fixed at predetermined positions in the casing 14 in this manner. The pair of ball bearings 11 and 11 are rotatably supported.

  Further, in the case of the continuously variable transmission shown in the figure, the base end portion (left end portion in FIG. 4) of the input shaft 5 is connected to a crankshaft of an engine (not shown) via a drive shaft 27, and the input is made by this crankshaft. The shaft 5 is driven to rotate. Further, a surface suitable for a rolling contact portion (traction portion) between the axial side surfaces of the input side disks 8a and 8b, the axial side surfaces of the output side disk 9 and the peripheral surfaces of the power rollers 10 and 10. A pressing device 28 for applying pressure is provided. In the illustrated example, a hydraulic device is used as the pressing device 28. Also, the pressing device 28 and hydraulic actuators 29 and 29 for displacing the trunnions 12 and 12 for shifting by a hydraulic source (not shown) such as a gear pump, a low speed clutch 30 and a high speed described later. Pressure oil can be freely supplied to a hydraulic cylinder for connecting and disconnecting the clutch 31 for use.

  Further, the base end portion (the left end portion in FIGS. 4 to 5) of the hollow rotary shaft 32 is spline-engaged with the center portion of the output side disk 9. The hollow rotary shaft 32 is inserted inside the input side disk 8b on the side far from the engine (the right side in FIGS. 4 to 5) so that the rotational force of the output side disk 9 can be taken out. Further, the first planetary gear type transmission unit 2 is configured at a portion protruding from the outer surface of the input side disk 8b at the tip end portion (the right end portion in FIGS. 4 to 5) of the hollow rotary shaft 32. The first sun gear 33 is fixed.

  On the other hand, a first carrier 34 is provided between the input side disk 8b and a portion protruding from the hollow rotary shaft 32 at the tip end portion of the input shaft 5 (right end portion in FIGS. 4 to 5). Thus, the input side disk 8b and the input shaft 5 rotate in synchronization with each other. Planets for constituting the first and second planetary gear type transmission units 2 and 3 each of which is a double pinion type at circumferentially equidistant positions on both side surfaces in the axial direction of the first carrier 34. Gears 35 to 37 are rotatably supported. Further, a first ring gear 38 is rotatably supported around one half of the first carrier 34 (the right half of FIGS. 4 to 5).

  Among the planetary gears 35 to 37, the planetary gear 35 provided on the inner side in the radial direction of the first carrier 34 near the toroidal type continuously variable transmission unit 1 (leftward in FIGS. 4 to 5) Is engaged with the sun gear 33. The planetary gear 36 provided on the inner side in the radial direction of the first carrier 34 on the side far from the toroidal-type continuously variable transmission unit 1 (the right side in FIGS. 4 to 5) is a base end portion of the transmission shaft 7 ( It meshes with a second sun gear 39 fixed at the left end of FIG. Further, the remaining planetary gear 37 provided on the outer side in the radial direction of the first carrier 34 has a larger axial dimension than the planetary gears 35 and 36 provided on the inner side, and both the gears 35 and 36 are provided. Is engaged. Further, the remaining planetary gear 37 and the first ring gear 38 are meshed with each other.

  On the other hand, a second carrier 40 for constituting the third planetary gear type transmission unit 4 is coupled and fixed to the base end portion (left end portion in FIG. 4) of the output shaft 6. The second carrier 40 and the first ring gear 38 are coupled via the low speed clutch 30. Further, a third sun gear 41 is fixedly provided near the tip of the transmission shaft 7 (near the right end in FIGS. 4 to 5). Further, a second ring gear 42 is disposed around the third sun gear 41, and the high speed clutch 31 is disposed between the second ring gear 42 and a fixed portion such as the casing 14. Provided. Further, a plurality of planetary gears 43 and 44 disposed between the second ring gear 42 and the third sun gear 41 are rotatably supported by the second carrier 40. The planetary gears 43 and 44 mesh with each other, and the planetary gear 43 provided on the inner side in the radial direction of the second carrier 40 is used as the third sun gear 41 and the planetary gear 44 provided on the outer side is provided. The second ring gears 42 are meshed with each other.

  In the case of the continuously variable transmission configured as described above, the power transmitted from the input shaft 5 to the integrated output disk 9 via the pair of input disks 8a and 8b and the power rollers 10 and 10 is It is taken out through the hollow rotary shaft 32. In a state where the low speed clutch 30 is connected and the high speed clutch 31 is disconnected, the rotational speed of the input shaft 5 is made constant by changing the gear ratio of the toroidal-type continuously variable transmission unit 1. In this state, the rotation speed of the output shaft 6 can be freely converted into forward rotation and reverse rotation with the stop state interposed therebetween. On the other hand, in a state where the low speed clutch 30 is disconnected and the high speed clutch 31 is connected, the output shaft 6 is rotated in the direction of moving the vehicle forward.

  When assembling the continuously variable transmission constructed and operated as described above, the toroidal continuously variable transmission unit 1 and the first and second planetary gear transmission units 2 and 3 are connected to the units 1 to 3 respectively. Prior to being housed in the casing 14, as shown in FIG. That is, the output side disk 9 and the hollow rotary shaft 32 are rotatably supported by a pair of support columns 17 and 17 (see FIGS. 4 to 6) whose lower ends are coupled and fixed to the actuator body 15. Further, a plurality of trunnions 12, 12 and power rollers 10, 10 are provided by a pair of upper and lower support plates 13a, 13b that are externally supported by the support post portions 18a, 18b provided at both upper and lower ends of the support columns 17, 17. Is supported at a predetermined position. Further, the pressing device 28, the pair of input side disks 8a and 8b, the first and second planetary gear type transmission units 2, 3 and the like are assembled to the input shaft 5 inserted through the hollow rotary shaft 32. .

  Before the main parts of the toroidal type continuously variable transmission unit 1 and the first and second planetary gear type transmission units 2 and 3 constituting the continuously variable transmission are assembled in the casing 14, the casing 14 The module 45 is assembled outside (on the work table) and becomes the main part of the continuously variable transmission as shown in FIG. The assembly work of the module 45 can be performed in a wide space without being obstructed by the casing 14, and the assembly work is facilitated. Also, after assembling the module 45 and before storing it in the casing 14, the operating state of the module 45 is confirmed. If this operating state is defective, disassembly / reassembly is performed in a wide space outside the casing 14.

  On the other hand, when the operating state of the module 45 is appropriate, the module 45 is inserted into the casing 14 from the lower end opening of the casing 14 with the connecting plate 16 facing up. Cylindrical positioning sleeves 26 and 26 are spanned between the upper surface of the connecting plate 16 and the lower surface of the top plate portion 25, and portions near both ends in the upper surface width direction of the actuator body 15 are connected to the step portions. It hits 23a and 23b. Then, bolts (not shown) inserted through the bolt insertion holes 24, 24 of the actuator body 15 from below are screwed into screw holes opened in the respective step portions 23a, 23b, and further tightened, whereby the module 45 is fixed to the casing. 14 is fixed inside. After this fixing operation, the lower end opening of the casing 14 is closed with an oil pan 46.

  Components such as the third planetary gear type transmission unit 4 that are not included in the module 45 are assembled in the casing 14 after the module 45 is assembled in the casing 14. Further, in the illustrated example, oil supply nozzles 47 and 47 for supplying lubricating oil (traction oil) to the traction portions are provided above the support columns 17 and 17. The lubricating oil is fed into the oil supply nozzles 47 and 47 from oil supply passages 48 a and 48 b provided in the top plate portion 25 and the connecting plate 16. In addition, oil supply passages 48c and 48c are provided inside the trunnions 12 and 12 for feeding lubricating oil to the rolling bearing portions related to the power rollers 10 and 10, respectively, and an oil supply passage 48a provided in the top plate portion 25. The lubricating oil can be fed freely into the oil supply passages 48c, 48c in the trunnions 12, 12 from above. In accordance with this, oil supply plugs 49, 49 for feeding lubricating oil toward the oil supply passages 48 c, 48 c are provided on the lower surface of the connecting plate 16, and as the module 45 is incorporated into the casing 14, The oil supply passage 48b on the connecting plate 16 side and the oil supply passages 48c and 48c on the trunnions 12 and 12 side are communicated with each other.

In the case of the structure described in Patent Document 5 as described above, there is still room for improvement in terms of efficiently assembling the module 45. This point will be described with reference to FIG. In the toroidal type continuously variable transmission, in order to obtain a desired gear ratio, as is well known, the movement of the trunnion 12 is controlled by an actuator 29, by a recess cam 50 coupled to any trunnion 12 (see FIGS. 6 to 7). 29 (refer to FIG. 6) is configured to be transmitted to a control valve for controlling the supply and discharge of the pressure oil to and from. The recess cam 50 used for this purpose projects downward from the lower surface of the actuator body 15 as shown in FIG. Therefore, it is difficult to assemble the module 45 by placing the actuator body 15 on the work table. On the other hand, in the case of the conventional structure, a part of the pressing device 28 provided at the end of the module 45 protrudes upward from the upper surface of the connecting plate 16 by δ _{0 in} FIG. Therefore, it is difficult to place the connecting plate 16 on the upper surface of the work table and perform the assembly work of the module 45 as it is. In order to assemble the module 45 having the conventional structure for this purpose, it is conceivable that the connecting plate 16 is placed on the upper surface of the work table with the spacer having a thickness of δ ₀ min or more. It was.

  However, the assembling work of the module 45 is complicated because the spacer is used. After the module 45 is assembled, the module 45 is stored with the connecting plate 16 facing downward with the spacer lost, or temporarily placed on a work table for assembly preparation work. If placed, the weight of the module 45 is concentrated on a portion of the pressing device 28 protruding from the connecting plate 16. In such a case, if the amount of protrusion is small, each part is deformed by the weight of the module 45, so that the connecting plate 16 is apparently stable on the work table or the like (which is originally unstable). Therefore, the operator may not be aware that an excessive force is acting on the module 45. Further, if the work is continued in this state and the loading nut is tightened, the module 45 that is originally placed in an unstable state on the workbench may be relatively easily overturned. There is. And when falling down, the possibility that the structural member of the toroidal-type continuously variable transmission unit 1 (variator part) may be damaged, or an operator may be injured may be considered. Alternatively, a large force is applied to the input shaft 5 provided at the center of the pressing device 28, the rolling bearing that supports the input shaft 5, and the durability of the input shaft 5 and the rolling bearing is reduced. There is a possibility that the concavo-convex portion for detecting the rotational speed formed on the outer peripheral edge portion of the pressing device 28 is deformed. Further, when a part of the pressing device 28 protrudes from the connecting plate 16, it is necessary to provide a counterbore or the like in a part of the top plate portion 25 where the upper end of the pressing device 28 faces. For this reason, the manufacturing cost of the metal mold for casting the casing 14 including the top plate portion 25 is increased, and the cost of the entire toroidal type continuously variable transmission is increased, which is not preferable.

JP-A-2-283949 JP-A-8-4869 JP-A-8-61453 Japanese Patent Laid-Open No. 2001-116097 JP 2004-84712 A

  In view of the circumstances as described above, the present invention provides a toroidal continuously variable transmission and continuously variable transmission that can easily assemble a module without using a member such as a spacer or the like other than the components constituting the module. Invented to realize the apparatus.

The toroidal type continuously variable transmission of the present invention includes a casing, a rotating shaft, a pair of outer disks, and the like, as in the conventional toroidal type continuously variable transmission described in Patent Document 5 and the like described above. And an inner disk, a plurality of support members, a plurality of support plates, a plurality of power rollers, a plurality of actuators, and an actuator body.
Among these, the rotating shaft is rotatably supported in the casing.
Further, the both outer discs are supported at both ends of the rotating shaft so as to freely rotate in synchronism with the rotating shaft in a state where the respective axial side surfaces of each of the outer disks are arcuate in cross section. Yes.
In addition, the inner disk rotates relative to the rotating shaft around the middle portion of the rotating shaft, with both axial side surfaces having a circular arc cross section facing one axial side surface of each outer disk. It is supported freely, and is formed as a single unit or a pair of elements.
The supporting members are pivoted in a twisted position with respect to the rotating shaft, each in a plurality of positions between both axial side surfaces of the inner disk and one axial side surface of the outer disk with respect to the axial direction. Oscillating displacement around the center is freely provided.
The support plates are for supporting the pivots provided at both ends of the support members.
Each of the power rollers is rotatably supported by each of the supporting members, and each circumferential surface formed as a spherical convex surface includes both axial side surfaces of the inner disk and one axial side surface of the outer disk. It is made to contact.
The actuators are for displacing the support members in the axial direction of the pivot.
The actuator body houses the main body of each actuator.
A pair of support columns having a support ring portion at each intermediate portion are provided between both axial side surfaces of the inner disk and one axial side surface of each outer disk, and the rotation shaft is mounted on the support ring portion. It is provided in the inserted state. Then, one end of both struts is connected and fixed to the actuator body, and the other end is connected to the connecting plate, and both axial ends of the inner disk are rotatably supported by the support ring portions of both struts. Yes.
Furthermore, each said support plate is supported by the both-ends vicinity part of both said support | pillars.
In particular, in the toroidal-type continuously variable transmission according to the present invention, the actuator is more preferable than all the parts constituting the module assembled with the actuator body and the connecting plate prior to assembly into the casing. At least a corner portion of at least one of the opposite side surfaces of the body and the connecting plate is present on the outer side which is a side far from the rotation shaft.

  According to the toroidal-type continuously variable transmission of the present invention configured as described above, a spacer or the like that is a member other than the components constituting the module assembled to the actuator body and the connecting plate prior to assembly into the casing. This module can be easily assembled without having to use it.

When carrying out the present invention, for example, as described in claim 2, the entire outer peripheral surface of the pressing device is disposed on the opposite side of the actuator body from the opposite surface of the connecting plate to the actuator body. Do not protrude.
If comprised in this way, an assembly operation | work of a module can be performed by mounting the said connection board on the upper surface of a work bench | platform, without using extra members, such as a spacer.
Alternatively, as described in claim 3, protrusions are provided at each of a plurality of corners on the surface opposite to the connecting plate among both surfaces of the actuator body. Then, the recess cam provided in a state protruding from the actuator body is not protruded on the opposite side of the connecting plate from the virtual plane connecting the tip surfaces of the protrusions.
If comprised in this way, without using extra members, such as a spacer, the said actuator body can be mounted on the upper surface of a work table, and the assembly operation | work of a module can be performed.

Further, the present invention is preferably applied to a toroidal type continuously variable transmission incorporated in a continuously variable transmission in which a toroidal type continuously variable transmission unit and a planetary gear type transmission unit are combined. Such a continuously variable transmission includes an input shaft connected to the rotating shaft of the toroidal type continuously variable transmission unit and an output shaft connected to the constituent members of the planetary gear type transmission unit. The planetary gear type transmission unit transmits power from the rotating shaft and the inner disk of the toroidal-type continuously variable transmission unit, and has switching means for switching the power transmission path between two systems.
Such a continuously variable transmission has many parts to be incorporated in the casing, and it is preferable to assemble the module in advance outside the casing from the viewpoint of improving the efficiency of the assembling work. large.

  FIG. 1 shows a first embodiment of the present invention corresponding to claims 1, 2 and 4. The feature of this embodiment lies in the structure for efficiently assembling the module 45 and preventing the components of the module 45 from being inadvertently damaged after the assembly is completed. Since the structure and operation of the other parts are the same as those of the toroidal type continuously variable transmission and continuously variable transmission described in the above-mentioned Patent Document 5, illustrations and explanations regarding equivalent parts are omitted or simplified. The description will focus on the features of the present embodiment.

In the case of the present embodiment, when the module 45 is viewed in a state assembled to the casing 14 (see FIGS. 4 to 6), the pressing device 28 provided at the end of the module 45 is positioned at the uppermost position. The portion also exists downward from the upper surface of the connecting plate 16 by δ ₁ (recessed). Accordingly, when assembling the module 45, the assembling work can be easily performed by placing the connecting plate 16 on the upper surface of the work table. That is, when the assembly operation of the module 45 is performed in a state reversed upside down from the assembly state in the casing 14, the upper surface of the connection plate 16 (the lower surface during the assembly operation) is placed on the upper surface of the work table. It can be performed with almost no contact on the entire surface. There is no need to use extra members such as spacers as in the case of assembling the conventional structure described above.

  In addition, after assembling the module 45, as long as the connecting plate 16 is placed on the lower side, the connecting plate is stored or temporarily placed on a work table for assembly preparation work. The entire weight of the module 45 is not concentrated on any part other than 16. Therefore, a large force is not applied to the input shaft 5 provided at the center of the pressing device 28, the rolling bearing that supports the input shaft 5, and the durability of the input shaft 5 and the rolling bearing is reduced. Further, it is possible to reliably prevent deformation of the concavo-convex portion for detecting the rotational speed formed on the outer peripheral edge portion of the pressing device 28. Further, it is not necessary to provide a counterbore or the like in a part of the top plate portion 25 (see FIGS. 4 to 6) of the casing 14 where the upper end portion of the pressing device 28 faces, and the casing including the top plate portion 25. The manufacturing cost of the die for casting 14 can be reduced, and the cost of the entire toroidal type continuously variable transmission can be suppressed.

  FIG. 2 shows a second embodiment of the present invention corresponding to claims 1, 3 and 4. In the case of the present embodiment, when the module 45 is viewed in a state where it is assembled to the casing 14 (see FIGS. 4 to 6), the projecting portions are respectively formed at the four corners of the lower surface of the actuator body 15 existing at the lower end portion of the module 45. 51 and 51 are provided. The recess cam 50 provided so as to protrude from the actuator body 15 is positioned above a virtual plane α connecting the lower end surfaces of the protrusions 51 and 51. These protrusions 51, 51 may be along the sides on both ends in the length direction, as shown in FIG. 3A, or as shown in FIG. In addition, the above four corners may be independent.

  In the case of the present embodiment, since it is configured as described above, when assembling the module 45, the actuator body 15 is placed on the upper surface of the work table and the lower end surfaces of the projecting portions 51, 51. Can be easily carried out by placing it in contact with the upper surface of the work table. That is, the assembly operation of the module 45 can be performed in the same direction as the assembly state in the casing 14 in a state where the actuator body 15 is in contact with the entire upper surface of the workbench without being turned. . There is no need to use extra members such as spacers as in the case of assembling the conventional structure described above.

  In addition, after assembling the module 45, as long as the actuator body 15 provided with the protrusions 51 and 51 is placed on the lower side, the module 45 is stored or temporarily placed on the work table for assembly preparation work. When placed, the entire weight of the module 45 does not concentrate on the portions other than the projecting portions 51 and 51. Therefore, even when the upper surface of the connecting plate 16 is positioned higher than the upper surface of the module 45, the input shaft 5 provided at the center of the pressing device 28 or a rolling bearing that supports the input shaft 5 is large. No force is applied, and the durability of the input shaft 5 and the rolling bearing is reduced, or the uneven portion for detecting the rotational speed formed on the outer peripheral edge of the pressing device 28 is surely deformed. Can be prevented.

  The protrusions 51 and 51 are used to connect the actuator body 15 and a valve body 52 (see FIGS. 4 to 6) provided below the actuator body 15. For example, a bolt inserted through the valve body 52 from below is screwed into a screw hole opened in the tip surface (lower end surface) of each of the protrusions 51, 51, and further tightened. If comprised in this way, the said actuator body 15 and the said valve body 52 can be couple | bonded and fixed in the state which ensured the positioning accuracy sufficiently and firmly.

  The present invention is not limited to the toroidal type continuously variable transmission of the half toroidal type as shown in the figure, but a full toroidal type toroidal type continuously variable transmission, a full toroidal type toroidal type continuously variable transmission, and a planetary gear type transmission. The present invention can also be applied to a continuously variable transmission combined with a machine.

Sectional drawing equivalent to the A section of FIG. 4 which shows Example 1 of this invention. Sectional drawing equivalent to the A section of FIG. The figure seen from the lower part of FIG. 2 which shows 2 examples of the shape of a protrusion part schematically. Sectional drawing which shows an example of a conventional structure. The B section enlarged view of FIG. The expanded CC sectional view of FIG. The perspective view of the module which is the principal part of the continuously variable transmission assembled before storing in a casing. The perspective view shown in the state which looked at the casing from the downward direction. The figure similar to FIGS. 1-2 which shows a conventional structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Toroidal type continuously variable transmission unit 2 First planetary gear type transmission unit 3 Second planetary gear type transmission unit 4 Third planetary gear type transmission unit 5 Input shaft 6 Output shaft 7 Transmission shaft 8a, 8b Input side disk 9 Output side disk 10 Power roller 11 Ball bearing 12 Trunnion 13a, 13b Support plate 14 Casing 15 Actuator body 16 Connecting plate 17 Post 18a, 18b Support post portion 19 Support ring portion 20 Bolt 21 Bolt 22a, 22b Support hole 23a, 23b Step portion 24 Bolt insertion hole 25 Top plate part 26 Positioning sleeve 27 Drive shaft 28 Press device 29 Actuator 30 Low speed clutch 31 High speed clutch 32 Hollow rotary shaft 33 First sun gear 34 First carrier 35 Planetary gear 36 Planetary gear 37 Planetary Gear 38 first Ring gear 39 second sun gear 40 second carrier 41 third sun gear 42 second ring gear 43 planetary gear 44 planetary gear 45 module 46 oil pan 47 oil supply nozzle 48a, 48b, 48c oil supply passage 49 oil supply plug 50 Precess cam 51 Projection 52 Valve body

Claims (4)

  A rotating shaft supported rotatably in the casing, and a rotating shaft supported on both ends of the rotating shaft in a state where the axial side surfaces of the rotating shaft are opposed to each other. A pair of outer disks supported so as to be able to freely rotate in a synchronized manner, and a state where both axial side surfaces having an arcuate cross section are opposed to one axial side surface of each outer disk around the intermediate portion of the rotating shaft An inner disk that is supported by a relative rotation with respect to the rotation shaft, or is formed by coupling a single element or a pair of elements, both axial sides of the inner disk with respect to the axial direction, and the shafts of the outer disks. A plurality of support members each provided at a position between one side surface of the direction, and a plurality of support members that are freely swingable about a pivot that is twisted with respect to the rotation shaft, and both ends of each of the support members Provided in A plurality of support plates for supporting each pivot, and each peripheral surface that is rotatably supported by each support member and has a spherical convex surface, are formed on both side surfaces in the axial direction of the inner disk and the shafts of the outer disks. A plurality of power rollers in contact with one side surface in the direction, a plurality of actuators for displacing each of the support members in the axial direction of the pivot, and an actuator body that houses a body portion of each of the actuators, A pair of struts having a support ring portion at each intermediate portion are inserted between both axial side surfaces of the inner disk and one axial side surface of each outer disk, and the rotating shaft is inserted into the support ring portion. One end of both struts is connected and fixed to the actuator body and the other end is connected to the connecting plate, and the axial direction of the inner disk is fixed to the support ring portion of both struts In a toroidal-type continuously variable transmission that supports both ends rotatably and further supports the support plates in the vicinity of both ends of these struts, prior to assembly into the casing, the actuator body and At least a corner of at least one of the side surfaces opposite to each other of the actuator body and the connecting plate is made to rotate more than all the parts that are assembled to the connecting plate to form a module. A toroidal-type continuously variable transmission characterized in that it is present on the outer side, which is far from the shaft.   2. The toroidal continuously variable transmission according to claim 1, wherein the entire outer peripheral surface of the pressing device does not protrude to the opposite side of the actuator body from the opposite side of the connecting plate.   Protrusions are provided at a plurality of corners on the opposite surface of the actuator body on both sides of the actuator body, and the recess cam provided in a state of projecting from the actuator body is the tip surface of each of the projecting parts. The toroidal continuously variable transmission according to any one of claims 1 to 2, wherein the toroidal continuously variable transmission does not protrude on the opposite side of the connecting plate from a virtual plane connecting the two. A toroidal-type continuously variable transmission unit and a planetary gear-type transmission unit are combined, and an input shaft connected to the rotation shaft of the toroidal-type continuously variable transmission unit and an output shaft connected to the constituent members of the planetary gear-type transmission unit. Prepared,
Of these, the toroidal type continuously variable transmission unit is the toroidal type continuously variable transmission according to claim 1,
The planetary gear type transmission unit receives power from the rotating shaft and the inner disk of the toroidal-type continuously variable transmission unit, and has switching means for switching the power transmission path between two systems. Step transmission.

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