JP4654698B2 - One-way clutch inner race support structure - Google Patents

Description

  The present invention relates to a support structure for a one-way clutch provided in an automatic transmission, and more particularly to a support structure for an inner race located on the inner peripheral side of the one-way clutch.

  Conventionally, an automatic transmission mounted on a vehicle or the like includes a transmission gear mechanism including a plurality of planetary gear trains and the like, and a friction engagement element including a clutch, a brake, and the like. It is configured to achieve the required shift speed.

  Under such circumstances, a one-way clutch may be interposed between the transmission case and the rotation element in order to prevent idling or the like when switching the engagement of the friction engagement element.

  For example, Patent Document 1 listed below discloses an automatic transmission in which a one-way clutch is arranged at the rear end (end opposite to the engine) of a countershaft where a sub-transmission is arranged.

Japanese Patent No. 3110486

  By the way, generally, when producing an industrial product, it is required to increase the productivity by reducing the number of parts as much as possible and reducing the number of processing steps.

  In this regard, when looking at the automatic transmission of Patent Document 1, in the support structure of the inner race of the one-way clutch, a separate member is provided between the transmission case and the one-way clutch (the cylindrical support member 212 in the Patent Document). ) To support the inner race. This is because when the inner race of the one-way clutch is fixed to the transmission case, it must be fitted and fixed by spline coupling, so by providing another member with a separate spline processing on the surface, The assembly is done reliably and firmly.

  However, when another member subjected to spline processing is provided in this way, there is a problem that the number of parts increases and the number of processing steps further increases.

  To solve this problem, it is conceivable to support the one-way clutch directly in the transmission case by eliminating another member and forming a spline directly in the transmission case.

  However, since the transmission case is formed by casting, it cannot be precisely formed when forming the spline, and the support structure of the one-way clutch must be loosely fitted.

  As described above, when the support structure of the one-way clutch is in the loosely fitted state, a striking sound is generated when a rotational torque is applied to the one-way clutch, and an abnormal noise is generated during the operation of the automatic transmission.

  For example, when this abnormal noise is generated during high-speed rotation, a loud striking sound is generated. Therefore, when this automatic transmission is mounted on a vehicle, a problem such as giving a driver a sense of incongruity is caused.

  Therefore, the present invention provides an inner race support structure for a one-way clutch installed in an automatic transmission, by directly supporting the inner race of the one-way clutch with a transmission case, while reducing the number of parts and processing man-hours. It is an object to provide an inner race support structure for a one-way clutch that suppresses the generation of striking sound and prevents abnormal noise during operation of an automatic transmission even when the inner race is directly supported by a transmission case. To do.

An inner race support structure for a one-way clutch according to the present invention is an inner race support structure for a one-way clutch provided in a transmission case that supports a transmission shaft, and is concentric in the axial direction of the transmission shaft from the inner wall of the transmission case. A boss portion extended to the inner race, a spline protrusion formed on the inner peripheral surface of the inner race of the one-way clutch, and a spline groove integrally formed on the outer peripheral surface of the boss portion so as to be fitted to the spline protrusion, in the rotational direction of the outer race of the one-way clutch for supporting the rotary member is locked, so as to urge the spline projections, the resilient member interposed between the spline projections and the spline groove, the bullet An annular support plate provided in the circumferential direction, and the support plate is fitted to the outer peripheral surface of the boss. It is, those interposing the resilient member between the spline projections and the spline groove.

  According to the above configuration, the spline groove is integrally formed by casting in the boss portion that is extended on the inner wall of the transmission case, and the outer periphery is formed between the spline groove and the spline protrusion provided on the inner race of the one-way clutch. Since the elastic member that urges the spline protrusion is interposed in the rotational direction in which the race is locked, the spline protrusion of the boss part remains in the state where the spline protrusion of the inner race eliminates the gap even when the one-way clutch is free. It will be pressed against the circumferential wall of the groove.

  For this reason, even when the one-way clutch is locked and rotational torque is applied, the spline protrusion of the inner race is already pressed against the circumferential wall of the spline groove of the boss portion, so that it is possible to suppress the occurrence of a hitting sound. .

Here, the elastic member, say the force application member of the spring steel material, such as rubber and resin member for applying a biasing force against the spline projection of the inner race of the one-way clutch.

  The transmission member means a main shaft or a counter shaft for transmitting the output of a driving source such as an engine to driving wheels or the like. Further, the rotating body refers to a rotating member that rotates integrally with the planetary gear train, and a rotating member that rotates integrally with a frictional engagement element such as a clutch or a brake.

  The type of the one-way clutch is not particularly limited, and may be a roller type or a sprag type.

In addition, according to the present invention, the elastic member is provided with an annular support plate portion provided in a plurality in the circumferential direction, and the elastic plate is fitted to the outer peripheral surface of the boss portion, thereby all SANYO interposing between the spline grooves and the spline projections, this way, by fitting simply boss outer peripheral surface a support plate portion provided with a plurality of elastic members in the circumferential direction, spline grooves An elastic member is interposed between the projection and the spline protrusion.

  For this reason, the interposing work (assembly work) of the plurality of elastic members can be performed by a simple work of simply fitting the support plate portion to the outer peripheral surface of the boss portion.

Therefore, even if a resilient member is separately provided, it is possible to prevent the productivity of the automatic transmission from deteriorating without degrading the assembling workability.
Here, the supporting plate portion, stone'll be integrated with the resilient member, but it may also be configured in a different body.

  In one embodiment of the present invention, the elastic members are arranged substantially evenly in the circumferential direction of the support plate portion.

  According to the above configuration, the plurality of elastic members are arranged substantially evenly in the circumferential direction in a state of being interposed between the spline groove and the spline protrusion.

  For example, when three bullet members are provided, they are arranged at intervals of about 120 ° in the circumferential direction, and when four are provided, they are equally spaced at intervals of about 90 °.

  For this reason, the elastic member can urge the inner race of the one-way clutch evenly in the circumferential direction, and can prevent the eccentricity between the axis of the inner race and the axis of the boss portion.

  Therefore, the unbalanced load generated in the clutch mechanism of the one-way clutch can be alleviated and the life of the one-way clutch can be extended.

  Here, “substantially equal” does not mean only complete equality. For example, to prevent erroneous assembly of the one-way clutch, the spline phase is deliberately changed so that the position is slightly shifted from the equal position. It is a concept that includes the case where the emitting member is arranged.

  In one embodiment of the present invention, the support plate portion is disposed on the base side of the boss portion so that the resilient member faces the tip end side of the boss portion, and after the support plate portion is incorporated. The inner race is incorporated from the tip end side to the root side of the boss portion.

  According to the above-described configuration, the inner race of the one-way clutch is assembled from the front end portion of the boss portion to the root side after the support plate portion provided with the resilient member is first assembled at the base of the boss portion.

  For this reason, for example, when an assembly method is employed in which the resilient member is assembled after the inner race of the one-way clutch is assembled in the boss portion, the assembly work is performed against the urging force of the resilient member. In this embodiment, the assembly work can be performed while avoiding such annoyance.

  Therefore, the interposing work between the one-way clutch of the elastic member and the boss part can be easily performed, and the assembling workability can be improved.

  In one embodiment of the present invention, the elastic member extends from the support plate portion to the tip end side of the boss portion, and the boss portion on the rotational direction side where the outer race of the one-way clutch becomes free. The provision part which contact | abuts to the circumferential direction wall of this spline groove | channel is provided.

According to the above configuration, the elastic members, since having a prescribed portion abutting the peripheral direction wall of the spline grooves of the boss portion from the support plate part and extending from the distal end side of the boss portion, the resilient member and Movement in the circumferential direction after assembly of the support plate portion is suppressed.
Therefore, it is possible to reliably inhibit the circumferential movement of the resilient member and the support plate portion.

Therefore, it is possible to prevent rattling of the elastic member and the supporting plate portion, to exhibit stably function the elastic member.

  In one embodiment of the present invention, the elastic member includes a distal-end bending portion that is continuously bent back to the defining portion, and extends in the folding direction continuously to the distal-end bending portion, and the distal-end bending portion. And a folded portion that increases the distance from the defining portion as the distance from the surface increases.

According to the above configuration, the elastic members, since it includes a distal bending portion continuous from the defining portion and a folded portion for enlarging the distance from the distal bending portion continuously to the distal bending portion, of the one-way clutch inner When the race is incorporated into the boss portion, the spline protrusion of the inner race is guided to the fitting position by the tip bending portion and the turn-up portion of the elastic member.

  For this reason, when incorporating the inner race of the one-way clutch into the boss portion, the resilient member can guide the spline protrusion of the inner race and smoothly fit into the spline groove.

Therefore, the assembly work of the inner race of the one-way clutch can be performed more easily, and the assembly workability can be improved.

In one embodiment of the invention, arranged a brake friction element on the outer peripheral side of the outer race of the one-way clutch, the boss portion in the axial direction of the piston and a return spring of the brake friction element in the brake friction element A stopper member that prevents the retainer of the return spring from moving toward the tip end side of the boss portion, and the stopper member includes the boss of the support plate portion. The movement to the base side of the part is prevented.

According to the above configuration, by disposing the piston and a return spring of the brake friction elements on the outer peripheral side of the one-way clutch it can be made compact in the axial direction, shortening the axial length of the automatic transmission itself it can.

  In addition, the movement of the support plate portion can be prevented by the stopper member that prevents the retainer of the return spring from moving.

Therefore, one of the stopper member, the position regulating function of the return spring retainer and the position regulating function of the supporting plate portion can cum sleeping possible.

  Therefore, even if a resilient member is separately provided or a new stopper member is not required, an increase in the number of parts can be prevented and productivity can be increased.

  According to the present invention, even when the one-way clutch is locked and rotational torque is applied, the spline protrusion of the inner race is already pressed against the circumferential wall of the spline groove of the boss portion, so that the generation of impact sound is suppressed. be able to.

  Therefore, in the inner race support structure of the one-way clutch installed in the automatic transmission, the transmission case directly supports the inner race of the one-way clutch, thereby reducing the number of parts and reducing the man-hours for the direct transmission case. Even in the case where it is supported, it is possible to suppress the generation of a striking sound and prevent the generation of abnormal noise during operation of the automatic transmission.

The embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1, the entire skeleton diagram of an automatic transmission which employs the inner race support structure of the one-way clutch of the present invention, FIG 2 is a diagram showing the operating states of each element of the automatic transmission.

As shown in FIG. 1, an automatic transmission 1 according to the present real 施形 condition comprises a torque converter 3 output of the engine 2 is input, the main transmission gear mechanism 6 having two planetary gear trains 4 and 5, And an auxiliary transmission gear mechanism 8 having a planetary gear train 7 arranged on an axis parallel to these axes.

The torque converter 3 inputs the output of the engine 2 via the engine output shaft 9 and outputs it to the main transmission gear mechanism 6 via the turbine shaft 10 (input shaft of the main transmission gear mechanism 6). Oil pump 11 which is arranged on the engine opposite side of the torque converter 3 is driven by the engine output shaft 9 through the converter case 12 and the pump 13.

  The main transmission gear mechanism 6 will be described. A forward clutch 21 is provided between the turbine shaft 10 and the sun gear 20 of the first planetary gear train 4, and a reverse clutch is provided between the turbine shaft 10 and the sun gear 22 of the second planetary gear train 5. 23, and a 3-4 clutch 25 is provided between the turbine shaft 10 and the pinion carrier 24 of the second planetary gear train 5, respectively.

The 2-4 brake 26 is configured to fix the sun gear 22 of the second planetary gear train 5 to the transmission case 28. Beauty main transmission one-way clutch 30 Oyo low reverse brake 29 between the transmission case 28 and these are connected to the ring gear 27 of the first planetary gear train 4 and a pinion carrier 24 of the second planetary gear train 5, the parallel It is configured to be arranged. Further, the pinion carrier 31 of the first planetary gear train 4 and the ring gear 32 of the second planetary gear train 5 are connected, and the output gear 33 is connected to them.

  Next, the auxiliary transmission gear mechanism 8 will be described. The input gear 40 that always meshes with the output gear 33 of the main transmission gear mechanism 6 is connected to the ring gear 41 of the third planetary gear train 7, and between the sun gear 42 and the pinion carrier 43. A direct coupling clutch 44 is provided.

  Further, an auxiliary transmission one-way clutch 45 and a deceleration brake 46 are arranged in parallel between the sun gear 42 and the transmission case 28. Then, the pinion carrier 43 of the third planetary gear train 7 is connected to the output shaft 47, and the output of the auxiliary transmission gear mechanism 8 is output via the input gear 50 of the differential device 49 by the output gear 48 provided on the output shaft 47. This is transmitted to the left and right drive shafts 51 and 52.

Automatic transmission 1 of this embodiment, the respective friction elements 21,23,25,26,29,30,44,46,45 of the main transmission gear mechanism 6 and the auxiliary transmission gear mechanism 8 described above, FIG. 2 By selectively operating in accordance with the operation diagram shown in FIG. 5, 5 forward speeds and 1 reverse speed can be obtained.

Here, the sub-shift one-way clutch 45 is provided mainly for smoothly shifting from the fourth speed to the fifth speed. That is, in the automatic transmission 1, during the 4-5 shift-up shift, the deceleration brake 46 of the auxiliary transmission gear mechanism 8 is released and the direct coupling clutch 44 is engaged. At this time, the deceleration brake 46 is released first. However, since the auxiliary transmission one-way clutch 45 is locked until the direct coupling clutch 44 is engaged, the engine 2 can be prevented from blowing up.

Next, the detailed structure of the auxiliary transmission gear mechanism 8 will be described with reference to FIGS.
A boss portion (cylindrical portion) 282 extending from the side wall portion 281 to the right side of the drawing (engine arrangement side) is provided at the center portion of the transmission case 28, and the rear end side of the output shaft 47 inside the boss portion 282 (The engine opposite side) is rotatably supported via a needle bearing 61.

The third planetary gear train 7, the direct coupling clutch 44, the reduction brake 46, and the auxiliary transmission one-way clutch 45 described above are arranged behind the input gear 40 (on the opposite side of the engine), and the sun gear of the third planetary gear train 7 is arranged. 42 a boss portion 42a of the auxiliary transmission one-way clutches 45 and multi-plate boss 101 of the engine arrangement end of the rotary member 100 coupled to the deceleration brake 46, are splined.

  As shown in FIG. 4, the rotating member 100 is provided with an annular portion 102 that extends to the left side (opposite side of the engine), and the annular portion 102 is disposed between the peripheral wall portion 283 of the transmission case 28. 46, and the outer race 451 of the auxiliary transmission one-way clutch 45 disposed between the hub 460 of the transmission case 28 and the boss 282 of the transmission case 28.

  Thus, the deceleration brake 46 and the auxiliary transmission one-way clutch 45 are disposed on the outer side and the inner side in the radial direction at positions that substantially coincide with the axial direction with the annular portion 102 of the rotating member 100 interposed therebetween.

  Among these, the auxiliary transmission one-way clutch 45 is formed on the outer race 451 (the inner peripheral surface of the annular portion 102 of the rotating member 100) and the outer periphery of the boss portion 282 of the transmission case 28. An inner race 452 that is spline-fitted to the spline 285, a plurality of rollers 453 that are disposed between the inner peripheral surface of the outer race 451 and the outer peripheral surface of the inner race 452, and these rollers 453. And a pair of ring members 454 and 455 that sandwich the ring.

  When the rotational torque in a predetermined direction is applied from the outer race 451 side, the auxiliary transmission one-way clutch 45 is engaged and locked between the outer race 451 and the inner race 452 so that the outer race 451 is locked. That is, the rotation member 100 and the sun gear 42 (see FIG. 3) connected to the rotation member 100 are prevented from rotating in a predetermined direction and fixed.

  The auxiliary transmission one-way clutch 45 is a so-called roller type one-way clutch that uses rollers 453... As a lock member.

On the other hand, the deceleration brake 46 includes a piston 461 whose inner and outer peripheral surfaces are slidably fitted in the axial direction between the boss portion 282 and the peripheral wall portion 283 on the side wall portion 281 side of the transmission case 28, and the piston 461. The outer peripheral portion 462a is spline-fitted to the spline 284 formed on the inner surface of the peripheral wall portion 283 and positioned on the engine arrangement side of the plurality of fixed side friction plates 462, and the fixed side friction plates 462 are alternately stacked. a plurality of rotation side frictional plate 463 ... inner peripheral portion 463a spline 103 formed on the outer peripheral surface of the annular portion 102 of the rotary member 100 ... is spline-fitted Te, fixed side friction plate 462 ... and the rotation side frictional plates 4 63 ... dish plate 464 and retainer play respectively arranged on the engine side opposite and engine disposed side (drawing on the left and right) of 465.

  A snap ring 466 is mounted on the inner surface of the case peripheral wall 283 on the engine arrangement side of the retainer plate 465 to prevent the fixed friction plates 462 and the rotation side friction plates 463 from moving to the engine arrangement side.

Between the piston 461 and the auxiliary transmission one-way clutch 45 is disposed a return spring 468 held by the retainer 466 and 467, the position of the return spring 468 and the retainer 467, the spline of the boss portion 282 It is regulated by a snap ring 469 fitted and locked to 285.

The deceleration brake 46, by supplying the hydraulic pressure to the hydraulic chambers Y between the piston 461 and the side wall 28 1 of the transmission case 28 is moved to an engine arranged side against the piston 461 to the return spring 468, The fixed side friction plates 462 and the rotation side friction plates 463 are fastened and fixed via the dish plate 464. Thus, the sun gear 42 (see FIG. 3) is fixed to the transmission case 28 via the rotating member 100.

  In this embodiment, a support plate member 60 that supports a later-described elastic member 61 (see FIG. 9) is disposed on the engine arrangement side adjacent to the snap ring 469.

  As will be described later, the support plate member 60 is splined on the inner peripheral surface of the inner race 452 of the auxiliary transmission one-way clutch 45 on a spline 285 (hereinafter referred to as boss spline) formed on the outer peripheral portion of the boss portion 282. It is a member which fixes and supports the elastic member 61 interposed between 456 (henceforth inner race spline).

The single item view of the support plate member 60 and resilient member 61, shown in FIGS. 5-7.
The support plate member 60 is formed of an annular plate member formed of an iron plate member, and a plurality of fitting protrusions 62 that fit into the boss spline 285 are formed at predetermined intervals on the inner peripheral surface thereof. . Specifically, the four fitting protrusions 62 are formed at intervals of about 120 ° toward the inner peripheral side except for one place.

  On one side surface of the support plate member 60, three elastic members 61 are fixed by caulking at almost the same interval as the fitting protrusions 62. 63 is a caulking fixing part.

  The intervals between the elastic members 61 are set such that α is 113.5 °, β is 127.8 °, and γ is 118.7 °. This is because the phase of the boss spline 285 is set at unequal intervals in order to prevent erroneous assembly of the auxiliary transmission one-way clutch 45 as will be described later. .

  However, since the elastic members 61 are provided at intervals of about 120 °, the elastic members 61 are interposed at intervals of about 120 ° in the circumferential direction between the boss splines 285 and the inner race splines 456. Become.

  Therefore, the elastic member 61 biases the inner race 452 of the auxiliary transmission one-way clutch 45 substantially evenly in the circumferential direction, and therefore, the eccentricity between the axis of the inner race 452 and the axis of the boss portion 282 is eccentric. Prevention can be achieved.

  Therefore, the unbalanced load generated in the clutch mechanism of the auxiliary transmission one-way clutch 45 can be reduced, and the life of the auxiliary transmission one-way clutch 45 can be extended.

Further, the resilient member 61 is a metal member having a substantially J-shaped having a strong or One elastic force heat treated spring steel. Specifically, as shown in FIG. 7, a fixing portion 611 that is caulked and fixed to the support plate member 60, and a circumferential wall surface of the boss portion spline 285 that extends from the fixing portion 611 in a substantially orthogonal direction and is assembled. A defining portion 612 that always contacts the bending portion, a bending portion 613 that is bent at the tip of the defining portion 612, and a folding portion 614 that continuously folds from the bending portion 613 and applies a biasing force to the inner race spline 456. It is composed.

FIG. 8 is a perspective view showing a state in which the support plate member 60 that fixes and supports the elastic member 61 is assembled to the boss portion 282.
The boss portion 282, but to form a boss portion splined 285 to the outer circumferential surface as described above, the boss splines 285, in order to decrease the reduction and processing steps parts, transmission case 28 is formed by casting. Therefore, a spline cannot be formed precisely.

  For this reason, when the inner race 452 of the auxiliary transmission one-way clutch 45 is spline-fitted to the boss portion 282, a clearance (clearance) is generated between the inner race spline 456 and the boss portion spline 285, and the loose-fitting state It becomes.

  However, when such a loose fit state occurs, a serious problem occurs. In other words, when rotational torque in the locking direction (the direction shown by the arrow) acts on the auxiliary transmission one-way clutch 45, there arises a problem that the circumferential wall surfaces of both the splines 285 and 456 come into contact with each other to generate a striking sound. It is.

  Therefore, in the present embodiment, the elastic member 61 is interposed between the circumferential wall surfaces of the two splines 285 and 456, so that the circumferential wall surface of the inner race spline 456 is provided even when the auxiliary transmission one-way clutch 45 is free. Is pre-biased in the locking direction so that no gap is generated.

Specifically, by arranging the elastic member 61 to the spline grooves 285a in to indicate the assembled state of FIG. 9 resiliently member 61, boss splines 285, the inner at the folded portion 614 of the elastic member 61 The race spline 456 (not shown in FIG. 9) is configured to be biased to the right side of the drawing (the lock side of the auxiliary transmission one-way clutch 45).

  In this way, by biasing the inner race spline 456 to the lock side, the boss portion spline 285 with which the circumferential wall surface 456a (see FIG. 10) of the inner race spline 456 opposes even when the auxiliary transmission one-way clutch 45 is free. Therefore, even when a rotational torque is applied at the time of locking, the generation of a striking sound can be suppressed and the generation of abnormal noise during operation of the automatic transmission 1 can be prevented.

  Therefore, by directly supporting the inner race 452 of the auxiliary transmission one-way clutch 45 by the boss portion 282 of the transmission case 28, it is possible to reduce the number of parts and reduce the number of processing steps, while suppressing the generation of impact sound and automatic shifting. It is possible to prevent abnormal noise during operation of the machine 1.

  In particular, in this embodiment, the timing at which the sub-shift one-way clutch 45 is operated is a 5-4 shift-down shift, and the automatic transmission 1 is also rotating at a high speed. Although this may cause discomfort to the driver and the like, such a problem can be solved.

  Further, in the present embodiment, the spline phase of the boss part spline 285 is set unevenly in order to reliably define the rotation lock direction of the auxiliary transmission one-way clutch 45. In other words, three portions t1, t2, and t3 (see FIG. 10) are provided in the circumferential direction where the thickness of the spline protrusion is large, and the thickness of each of the spline protrusions is made non-uniform, thereby defining the assembly direction of the auxiliary transmission one-way clutch 45. ing.

  For this reason, the elastic members 61 of the support plate member 60 are also installed unevenly as described above.

  A snap ring 469 is assembled in advance on the base side (left side in FIG. 8) of the boss spline 285 before the support plate member 60 is assembled, and then the support plate member 60 is attached to the distal end side (see FIG. 8 on the right side) is fitted to the boss part 282 by being fitted to the boss part spline 285.

  For this reason, the movement of the support plate member 60 toward the base side of the boss portion 282 is restricted by the snap ring 469, and the position in the axial direction is fixed.

  Therefore, as described above, the snap ring 469 has a function of regulating the position of the retainer 467 of the return spring 468 of the deceleration brake 46 and also has a function of regulating the position of the support plate member 60. Therefore, in order to regulate the position of the support plate member 60, it is not necessary to separately provide an axial position regulating member, and an increase in the number of parts can be prevented.

As can be seen from FIG. 9, for defining portion 612 is in contact with the circumferential direction wall 285c of the boss splines 285 (wall surface of the free rotation side of the auxiliary transmission one-way clutch 45), the resilient member 61 and The circumferential position of the support plate member 60 is defined.

  Therefore, there is no backlash in the circumferential direction of the bullet member 61, and it is possible to stably prevent abnormal noise from being generated by the bullet member 61.

FIGS. 10 and 11A to 11F are diagrams showing a process of assembling the inner race 452 of the auxiliary transmission one-way clutch 45 to the boss portion 282. FIG.
(A) is the figure which showed the state which assembled | attached the snap ring 469, the resilient member 61, and the support plate member 60 to the boss | hub part 282. FIG.

  As can be seen from this figure, the resilient member 61 is first fixed to the support plate member 60 so as to face the tip side from the root side (left side of the drawing) of the boss portion 282, and the folded portion 614 is rooted. It is in a state of being inclined so as to increase the distance (distance) from the defining portion 612 as it goes to the side.

(B) is a figure which shows the state which started assembling the inner race 452. FIG. As shown in FIG. 10B , first, when the inner race 452 is assembled, the phases of the boss spline 285 and the inner race spline 456 are substantially matched, and the inner race 452 is axially moved. Assemble by moving to.

  Next, as shown in (c), the elastic member 61 and the inner race spline 456 are brought into contact with each other. At this time, the inner race spline 456 is smoothly guided between the boss splines 285 by contacting the curved portion 613 at the tip of the elastic member 61.

  Then, as shown in (d), the folded-back portion 614 of the resilient member 61 guides (rotates) the inner race spline 456 in the locking direction (arrow direction) while guiding the inner race spline 456 between the boss splines 285. .

  Thereafter, as shown in (e), the resilient member 61 urges the inner race spline 456 in the locking direction so that the circumferential wall surface 456a of the inner race spline 456 is moved to the circumferential wall portion of the opposing boss spline 285. Press against 285b.

  Then, as shown in (f), the tip of the inner race spline 456 is brought into contact with the support plate member 60, whereby the assembly of the spline fitting to the boss portion 282 of the inner race 452 is completed.

  As described above, when the inner race 452 is assembled to the boss portion 282, even if the elastic member 61 is previously provided, the elastic member 61 is provided with the curved portion 613 and the folded portion 614. The inner race spline 456 can be smoothly fitted into the spline without being hindered.

  Further, before assembling the inner race 452, the support plate member 60 provided with a plurality of elastic members 61 in the circumferential direction is fitted into the boss portion 282 in advance, and the plurality of elastic members 61 are assembled. The interposing work (assembling work) of the plurality of elastic members 61... Can be performed by a simple work of simply fitting the support plate member 60 to the boss portion 282.

  For this reason, even if the elastic member 61 is provided, the productivity of the automatic transmission 1 can be improved without deteriorating the assembling workability.

  Furthermore, the support plate member 60 is disposed on the base side of the boss portion 282 so that the elastic member 61 faces the tip end side (engine arrangement side) of the boss portion 282, and after the support plate member 60 is incorporated, the inner plate By assembling the race 452 from the tip end side of the boss portion 282, the assembling work can be performed while avoiding the trouble of performing the assembling work against the urging force of the elastic member 61.

  Therefore, the interposing work between the auxiliary transmission one-way clutch 45 and the boss portion 282 of the elastic member 61 can be easily performed, and the assembling workability can be improved.

  As described above, according to the present embodiment, while reducing the number of parts and the machining process, it is possible to prevent the occurrence of a hitting sound and enhance the merchantability of the automatic transmission 1. Attachment workability can also be improved.

  In this embodiment, the elastic member 61 is made of highly durable spring steel. However, the present invention is not limited to this, and any elastic material that generates a biasing force may be made of a rubber material or a resin member. Also good.

  Further, the number of the elastic members 61 is not limited to three, but may be one or four or more.

Furthermore, in this embodiment, the elastic member 61 and the support plate member 60 are configured as separate members. However, a part of the support plate member 60 is formed by bending to form an elastic member, which is configured as a single member. Also good.
In addition, eliminating the support plate member 60, only the resilient member 61, but it may also be to prevent the occurrence of striking sound.

As described above, in the correspondence between the configuration of the present invention and the above-described embodiment,
The one-way clutch of the present invention corresponds to the auxiliary transmission one-way clutch 45 of the embodiment,
Similarly,
The spline protrusion corresponds to the inner race spline 456,
The spline groove corresponds to the boss spline 285,
The rotating body corresponds to the rotating member 100 and the deceleration brake 46,
The support plate portion corresponds to the support plate member 61,
The stopper member corresponds to the snap ring 469,
The present invention is not limited to the above-described embodiment, but includes an embodiment applied to any one-way clutch inner race support structure.

The skeleton figure of the automatic transmission which concerns on embodiment of this invention. The operation diagram of an automatic transmission. FIG. 3 is a structural diagram of a sub-transmission gear mechanism of an automatic transmission. The detailed structure figure of a subtransmission gear mechanism. The front single-piece figure of a support plate and a resilient member. The back single item figure of a support plate and an elastic member. Side surface detail drawing of a support plate and a resilient member. The perspective view which showed the state which attaches the support plate member which fixes and supports a resilient member to a boss | hub part. The detailed perspective view which shows the state which assembled | attached the elastic member to the boss | hub part. The figure which showed the work process which assembles an inner race to a boss | hub part. The figure which showed the work process which assembles an inner race to a boss | hub part.

DESCRIPTION OF SYMBOLS 1 ... Automatic transmission 28 ... Transmission case 282 ... Boss part 285 ... Boss part spline (spline groove)
45 ... Sub-shift one-way clutch (one-way clutch)
451 ... outer race 452 ... inner race 456 ... inner race spline (spline protrusion)
46 ... Deceleration brake (brake friction element)
461 ... Piston
466, 467 ... Retainer
468 ... Return spring
469 ... Snap ring (stopper member)
60: Support plate member (support plate part)
61 ... bullet member
612 ... Prescription part
613... Curved end portion
614 ... Folding part

Claims (6)

An inner race support structure for a one-way clutch provided in a transmission case that supports a transmission shaft,
A boss extending concentrically in the axial direction of the transmission shaft from the inner wall of the transmission case;
Spline protrusions formed on the inner race inner surface of the one-way clutch;
A spline groove integrally formed on the outer peripheral surface of the boss portion so as to be fitted with the spline protrusion,
A resilient member interposed between the spline groove and the spline protrusion so as to bias the spline protrusion in a rotational direction in which an outer race of the one-way clutch supporting the rotating body is locked ;
An annular support plate portion provided with a plurality of the elastic members in the circumferential direction,
An inner race support structure for a one-way clutch , wherein the elastic member is interposed between the spline groove and the spline protrusion by fitting the support plate portion to the outer peripheral surface of the boss portion . The inner race support structure for a one-way clutch according to claim 1 , wherein the elastic members are arranged substantially evenly in the circumferential direction of the support plate portion . The support plate portion is disposed on the base side of the boss portion so that the elastic member faces the tip end side of the boss portion,
The support plate part after incorporating, the inner race, the inner race support structure of the one-way clutch <br/> claim 1 or 2, wherein incorporating the root side from the tip end of the boss portion. The resilient member extends from the support plate portion to the tip end side of the boss portion, and contacts the circumferential wall of the spline groove of the boss portion on the rotational direction side where the outer race of the one-way clutch becomes free. inner race support structure of the one-way clutch <br/> claim 2 Symbol placement with a prescribed portion in contact. The elastic member includes a distal end bending portion that is continuously bent back to the defining portion, and
The inner part of the one-way clutch according to claim 3 , further comprising: a folded portion that extends continuously in the folded direction continuously to the distal curved portion and expands a distance from the defining portion as the distance from the curved distal portion. Race support structure. A brake friction element is disposed on the outer peripheral side of the outer race of the one-way clutch,
The brake friction element piston and return spring are arranged on the base side of the boss portion in the axial direction of the brake friction element,
A stopper member that prevents the retainer of the return spring from moving toward the tip of the boss portion;
The one-way clutch inner race support structure according to any one of claims 1 to 4, wherein the stopper member prevents the support plate portion from moving toward the base side of the boss portion .

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