JP6288028B2 - Transmission with centrifugal pendulum damper - Google Patents

Description

  The present invention relates to a transmission such as a vehicle, and more particularly to a transmission having a centrifugal pendulum damper.

  In order to improve fuel efficiency in engines that drive vehicles, etc., a multi-cylinder engine that is controlled to perform full-cylinder operation at high loads and to perform reduced-cylinder operation that stops some cylinders at low loads is practical. It has become.

  However, in general, the smaller the number of cylinders, the greater the torque fluctuation due to intermittent explosion, and the torque fluctuation increases when the ignition intervals of multiple cylinders become non-uniform. There is a tendency for torque fluctuation to increase, and this tendency becomes more prominent as the engine speed is lower.

  In addition, in order to further improve fuel efficiency, attempts have been made to commercialize engines using premixed compression ignition (hereinafter referred to as “HCCI”), Since it is difficult to perform HCCI combustion at this time, for example, the HCCI combustion mode is set in the low rotation and low load range, and the spark ignition (hereinafter referred to as “SI” (Spark Ignition)) in the high rotation range and the high load range. It is considered to switch the combustion mode in accordance with the operation region so as to set the combustion mode.

  However, in general, HCCI combustion, which is bulk combustion by self-ignition at multiple points, tends to have a larger torque fluctuation than SI combustion, which is flame propagation combustion by spark ignition. Therefore, in the case of such an engine, a large torque fluctuation may occur in a low rotation range operated in the HCCI combustion mode.

  In recent years, in order to improve the fuel efficiency of the engine, a vehicle is known in which the transmission efficiency of the engine is improved by using a torque converterless automatic transmission. For example, torsion dampers are being used instead of torque converters to reduce the torque transmission of automatic transmissions. In this case, torque fluctuations are absorbed to some extent by providing torsion dampers on the power transmission path. Is done. However, in general, only the torsional damper can absorb only torque fluctuations of a preset main frequency component, and there are a plurality of frequency fluctuations of the torque fluctuation, such as a torque converter that transmits torque via a fluid. In this case, it is difficult to absorb torque fluctuations other than preset frequency components.

  In the vehicle to which the above-described engine reduction operation, HCCI combustion or automatic transmission torque control technology is applied, the torsional vibration generated by torque fluctuation is amplified by the resonance of the power transmission system, particularly in the low rotation range. There was a problem of generating vibration and noise in each part of the vehicle.

  On the other hand, it is known to provide a centrifugal pendulum damper on a power transmission shaft. The centrifugal pendulum damper includes a support member that rotates together with a power transmission shaft, and a pendulum that is a mass body supported by the support member so as to be swingable about a point on a circumference of a predetermined radius from the axis. Prepare. If the pendulum swings due to torque fluctuation, a circumferential component force is generated in the support member that receives the centrifugal force acting on the pendulum, and this component force acts as a counter torque that suppresses torque fluctuation of the support member or the power transmission shaft. .

  Patent Document 1 discloses a torque converter in which a centrifugal pendulum damper is housed together with a torsion damper, and the torsional damper is disposed adjacent to the centrifugal pendulum damper in the torque converter.

Japanese Patent No. 5408096

  However, in an automatic transmission that uses a torque converter in which a torsion damper and a centrifugal pendulum damper are accommodated as in Patent Document 1, even if the torque converter is eliminated, the centrifugal pendulum damper can smoothly swing the pendulum. Lubricating oil needs to be supplied. However, since it is necessary to supply lubricating oil into a relatively large case that accommodates the torsional damper disposed adjacent to the centrifugal pendulum damper, the oil pump may be increased in size.

  The present invention has been made in view of the above-described situation regarding a transmission with a centrifugal pendulum damper, and an object thereof is to supply lubricating oil to the centrifugal pendulum damper without increasing the size of the oil pump.

  In order to solve the above problems, a transmission with a centrifugal pendulum damper according to the present invention is configured as follows.

First, the invention according to claim 1 of the present application is
A transmission with a centrifugal pendulum damper provided with a centrifugal pendulum damper on a power transmission path, wherein lubricating oil is supplied to the centrifugal pendulum damper,
A blocking portion provided on one side in the axial direction of the transmission case;
The centrifugal pendulum damper is disposed inside the transmission case of the closing portion.

The invention according to claim 2 is the transmission with the centrifugal pendulum damper according to claim 1,
On the other side in the axial direction of the closing part, another closing part for closing the opening on one side in the axial direction of the speed change mechanism accommodating part in which the speed change mechanism is accommodated is provided.
The centrifugal pendulum damper is disposed in a centrifugal pendulum damper accommodating portion provided between the another closed portion and the closed portion.

The invention according to claim 3 is the transmission with the centrifugal pendulum damper according to claim 2,
The centrifugal pendulum damper is connected to a power transmission shaft through a speed increasing mechanism,
The speed increasing mechanism is disposed in the centrifugal pendulum damper accommodating portion.

According to a fourth aspect of the present invention, in the transmission with the centrifugal pendulum damper according to the second or third aspect,
The centrifugal pendulum damper is connected to the power transmission shaft through a connection / disconnection mechanism,
The connecting / disconnecting mechanism is arranged in the centrifugal pendulum damper accommodating portion.

The invention according to claim 5 is the transmission with the centrifugal pendulum damper according to any one of claims 1 to 4,
The closing portion is a cover member that closes an opening on one axial side of the transmission case.

Further, the invention according to claim 6 is the transmission with the centrifugal pendulum damper according to claim 5,
The centrifugal pendulum damper is connected to a power transmission shaft through a speed increasing mechanism,
The speed increasing mechanism is disposed in the centrifugal pendulum damper accommodating portion,
In the centrifugal pendulum damper housing portion, the speed increasing mechanism is disposed on the cover member side in the axial direction, while the connection / disconnection mechanism is disposed on the other closing portion side,
A supply oil path to the connecting / disconnecting mechanism is provided in the other closing portion.

The invention according to claim 7 is the transmission with the centrifugal pendulum damper according to claim 5 or 6,
A fixing member for fixing the cover member to the transmission case;
The centrifugal pendulum damper is arranged at an inner circumferential side of the fixing member and at a position overlapping in the axial direction.

The invention according to claim 8 is the transmission with the centrifugal pendulum damper according to any one of claims 5 to 7,
The centrifugal pendulum damper is restricted from moving in the axial direction via a first bearing member disposed on the inner peripheral side of the cover member.

The invention according to claim 9 is the transmission with the centrifugal pendulum damper according to any one of claims 5 to 8,
The centrifugal pendulum damper is restricted from moving in a radial direction via a second bearing member disposed on the inner peripheral side of the cover member.

The invention according to claim 10 is the transmission with the centrifugal pendulum damper according to claim 8 or 9,
A seal member provided at an inner peripheral end of the cover member and the first bearing member or the second bearing member are disposed so as to overlap in the axial direction.

The invention according to claim 11 is the transmission with the centrifugal pendulum damper according to any one of claims 1 to 10,
A torsion damper is provided on the power transmission path,
The torsional damper is disposed outside the transmission case of the closing portion.

  With the above configuration, according to the first aspect of the present invention, the transmission case includes the closing portion provided on one side in the axial direction, and the centrifugal pendulum damper is disposed inside the transmission case of the closing portion. Therefore, the lubricating oil of the transmission can be shared, and the lubricating oil can be supplied to the centrifugal pendulum damper without increasing the size of the oil pump.

  According to the second aspect of the present invention, the other closing portion for closing the opening on the one axial side of the transmission mechanism housing portion in which the transmission mechanism is housed is provided on the other axial side of the closing portion. Since the centrifugal pendulum damper is disposed in the accommodating portion provided between the other closed portions, the centrifugal pendulum damper is disposed in the accommodating portion isolated from the transmission mechanism. Lubricating oil can be supplied in accordance with the lubrication requirements of the damper. Further, it is possible to suppress the influence on the speed change mechanism caused by supplying the lubricating oil to the speed increasing mechanism. Furthermore, it is easy to remove the centrifugal pendulum damper.

  According to the third aspect of the present invention, the centrifugal pendulum damper is connected to the power transmission shaft via the speed increasing mechanism, and the speed increasing mechanism is disposed in the accommodating portion in which the centrifugal pendulum damper is disposed. Therefore, the influence on the speed change mechanism due to the supply of the lubricating oil to the speed increasing mechanism can be suppressed.

  According to the invention described in claim 4, the centrifugal pendulum damper is connected to the power transmission shaft via the connection / disconnection mechanism, and the connection / disconnection mechanism is disposed in the accommodating portion in which the centrifugal pendulum damper is disposed. Therefore, it is possible to suppress the influence on the speed change mechanism by supplying the lubricating oil to the connection / disconnection mechanism.

  Further, according to the invention of claim 5, since the closing portion is a cover member that closes the opening on one side in the axial direction of the transmission case, the wall of the transmission case and the cover member are used. A housing portion for the centrifugal pendulum damper can be formed. In addition, the assembly of the transmission is improved.

  According to the sixth aspect of the present invention, the centrifugal pendulum damper is connected to the power transmission shaft via the speed increasing mechanism, and the speed increasing mechanism is disposed in the accommodating portion in which the centrifugal pendulum damper is disposed. In the housing portion, the speed increasing mechanism is disposed on the cover member side in the axial direction, while the connecting / disconnecting mechanism is disposed on the other closing portion side, and further, the connecting mechanism is connected to the other closing portion. Since the supply oil passage is provided, it is not necessary to form the supply oil passage to the connection / disconnection mechanism in the cover member by arranging the connection / disconnection mechanism on the other closed portion side, and the cover member is thinned. be able to.

  According to the seventh aspect of the present invention, the cover member has a fixing member for fixing the cover member to the transmission case, and the centrifugal pendulum damper is located on the inner peripheral side of the fixing member and in a position overlapping in the axial direction. Since it is disposed, the axial dimension can be shortened.

  According to the eighth aspect of the present invention, since the centrifugal pendulum damper is restricted from moving in the axial direction via the first bearing member disposed on the inner peripheral side of the cover member, the first bearing member The movement of the centrifugal pendulum damper in the axial direction can be restricted by the cover member.

  According to the ninth aspect of the invention, the centrifugal pendulum damper is restricted from moving in the radial direction via the second bearing member disposed on the inner peripheral side of the cover member. Accordingly, the radial movement of the centrifugal pendulum damper can be restricted by the cover member.

  According to the tenth aspect of the present invention, the seal member provided at the inner peripheral end of the cover member and the first bearing member or the second bearing member are disposed so as to overlap in the axial direction. Therefore, the axial dimension can be shortened.

  According to the eleventh aspect of the present invention, the torsional damper is provided on the power transmission path, and the torsional damper is disposed outside the transmission case of the closing portion. By disposing the lubricating oil outside the machine case in a place where supply is unnecessary, it is possible to suppress an increase in unnecessary driving loss of the oil pump.

It is a figure which shows the vibration model of the vehicle drive system provided with the transmission with a centrifugal pendulum damper which concerns on embodiment of this invention. FIG. 2 is a velocity diagram of a speed increasing mechanism of a transmission with a centrifugal pendulum damper shown in FIG. 1. FIG. 2 is a longitudinal sectional view showing an advantageous embodiment of a transmission with a centrifugal pendulum damper shown in FIG. 1. FIG. 6 is a longitudinal sectional view showing another advantageous embodiment of the transmission with the centrifugal pendulum damper shown in FIG. 1.

  Hereinafter, embodiments of the present invention will be described.

  FIG. 1 is a diagram showing a vibration model of a vehicle drive system provided with a transmission with a centrifugal pendulum damper according to a first embodiment of the present invention. As shown in FIG. 1, an engine 1 as a drive source includes a transmission 10 with a centrifugal pendulum damper (hereinafter simply referred to as “transmission 10”) including a speed change mechanism 2 that changes the speed of rotation to drive wheels (not shown). Are connected.

  The transmission 10 communicates between an engine-side power transmission member 3 as an output member of the engine 1 and a transmission-side power transmission member 9 as an input member disposed on the engine 1 side of the transmission mechanism 2. A torsional damper mechanism is provided. The torsional damper mechanism includes a first spring member 5 and a second spring member 7 connected in parallel between the engine side power transmission member 3 and the transmission side power transmission member 9. Thereby, rotation of the engine side power transmission member 3 is transmitted to the transmission side power transmission member 9 side via the spring members 5 and 7. The “transmission-side power transmission member 9” of the present embodiment corresponds to a “power transmission shaft” in claim 1.

  The transmission 10 also includes a centrifugal pendulum damper mechanism 11 communicated with the transmission-side power transmission member 9. The centrifugal pendulum damper mechanism 11 is connected to the planetary gear set 12 which is a speed increasing mechanism for increasing the rotation of the transmission-side power transmission member 9 and the transmission-side power transmission member 9 via the planetary gear set 12. A centrifugal pendulum damper 13 and a clutch mechanism 14 which is a connection / disconnection mechanism capable of connecting / disconnecting power transmission from the transmission side power transmission member 9 to the centrifugal pendulum damper 13 are provided.

  In the present embodiment, the planetary gear set 12 is a single pinion type, and as a rotating element, a sun gear 21, a ring gear 23, and a pinion carrier 24 that supports the sun gear 21 and the pinion 22 meshing with the ring gear 23 (hereinafter simply referred to as "carrier"). 24 ”)).

  A transmission side power transmission member 9 is connected to the carrier 24 of the planetary gear set 12 via a clutch mechanism 14, and a centrifugal pendulum damper 13 is connected to the sun gear 21, and the ring gear 23 is connected to the ring gear 23. The rotation of the first case member 2a is restricted by the connection of the first case member 2a.

  In addition, a rotation speed sensor 15 that detects the rotation speed of the sun gear 21 of the planetary gear set 12 that is a rotation element on the centrifugal pendulum damper 13 side in the clutch mechanism 14 is provided.

  Next, the speed increase by the planetary gear set 12 will be described with reference to FIG.

  FIG. 2 is a velocity diagram of the planetary gear set 12 which is a speed increasing mechanism of the transmission 10 shown in FIG. In FIG. 2, the sun gear 21, the carrier 24, and the ring gear 23 are abbreviated as “S”, “C”, and “R”, respectively. As shown in FIG. 2, since the ring gear 23 is fixed, the rotation input from the input shaft 9 to the carrier 24 is changed based on the gear ratio Zs: Zc between the sun gear 21 and the carrier 24, and Is output. At this time, since the sun gear 21 rotates in the same rotational direction as the carrier 24 (forward rotation), the input rotational speed Nin of the carrier 24 and the output rotational speed Nout of the sun gear 21 have a relationship of Nout = Nin × (Zs + Zc) / Zs. To establish. Therefore, naturally, the output rotational speed Nout> the input rotational speed Nin, and the rotation input from the input shaft 9 is accelerated by the planetary gear set 12 and transmitted to the centrifugal pendulum damper 13.

  Next, a specific example in which the transmission of the present invention is applied to a torque converter-less automatic transmission will be described in detail with reference to FIG.

  FIG. 3 is a longitudinal sectional view showing an advantageous embodiment of the transmission 10 shown in FIG. As shown in FIG. 3, the transmission 10 is housed in a second case member 2 b coupled to a first case member 2 a that houses the speed change mechanism 2 therein. An automatic transmission including the contents of the two case members 2b is configured and coupled to the engine 1. The second case member 2b has an opening on the engine 1 side in the axial direction, and the opening is closed by a cover member 2c. The cover member 2c is fixed to the first case member 2a by fastening bolts 2d.

  The internal space of the second case member 2b is divided into a space A on the engine 1 side and a space B on the transmission mechanism 2 side by a cover member 2c. The first case member 2a includes a vertical wall portion 2a1 that closes the space B where the engine 1 side of the space C in which the speed change mechanism 2 is accommodated is closed. The input shaft 9 of the transmission mechanism 2 (corresponding to the “transmission-side power transmission member 9” in FIG. 1) is provided so as to penetrate the cover member 2c and project its tip portion into the space A.

(Torsion damper mechanism)
In the space A on the engine 1 side, as the torsional damper mechanism, the input plate 4, the first coil spring 5 (corresponding to the “first spring member 5” in FIG. 1), the holding plate 6, and the second coil spring 7 (FIG. 1). And the output plate 8 are disposed.

  An output shaft 3 (corresponding to “engine-side power transmission member 3” in FIG. 1) of the engine 1 is fixed to a disk-shaped input plate 4 via a drive plate, and the input plate 4 is rotated with the rotation of the output shaft 3. Are configured to rotate concentrically. A holding plate 6 is fixed to the input plate 4 by welding or the like. The holding plate 6 has a plurality of first coil springs 5 arranged in the circumferential direction and a circumferential direction on the inner circumferential side of the first coil spring 5. And a plurality of second coil springs 7 arranged on each other. These coil springs 5, 7 are arranged in parallel on the power transmission path so that the outer peripheral portion of the holding plate 6 engages with one end of the first coil spring 5, and the inner peripheral portion of the holding plate 6 is The second coil spring 7 is engaged with one end. The outer peripheral portion of the output plate 8 engages with the other ends of the first coil spring 5 and the second coil spring 7, and the inner peripheral portion thereof is splined to the input shaft 9 of the speed change mechanism 2. Thereby, the rotation of the output shaft 3 of the engine 1 is transmitted to the input shaft 9 side of the transmission mechanism 2 via the coil springs 5 and 7.

  A planetary gear set 12, a centrifugal pendulum damper 13, a clutch mechanism 14 and a rotational speed sensor 15 are disposed on the axis of the input shaft 9 in the space B on the transmission mechanism 2 side in the second case member 2b. Yes. On the engine 1 side of the space B, a planetary gear set 12 is disposed on the inner peripheral side, and a centrifugal pendulum damper 13 is disposed on the outer peripheral side. A clutch mechanism 14 is provided on the planetary gear set 12 on the transmission mechanism 2 side. The centrifugal pendulum damper 13 is disposed at an inner circumferential side of the fastening bolt 2d and at a position overlapping in the axial direction. Further, in the vertical wall portion 2a1 of the first case member 2a, an oil passage 2a2 for supplying lubricating oil from an oil pump (not shown) to the planetary gear set 12, the centrifugal pendulum damper 13 and the clutch mechanism 14 accommodated in the space B. Is provided. Hereinafter, the planetary gear set 12, the centrifugal pendulum damper 13, the clutch mechanism 14, and the rotation speed sensor 15 will be described in detail.

(Speed increase mechanism)
As described above, the planetary gear set 12 is composed of a single pinion type planetary gear set in which the pinion 22 supported by the carrier 24 is directly meshed with the sun gear 21 and the ring gear 23.

  The planetary gear set 12 is disposed between the input shaft 9 and the centrifugal pendulum damper 13 in the radial direction. The carrier 24 of the planetary gear set 12 is connected to a clutch hub 41 of the clutch mechanism 14 described later, and communicates with the input shaft 9 of the transmission mechanism 2 via the clutch mechanism 14. The sun gear 21 is connected to a support member 31 of the centrifugal pendulum damper 13 described later via a connecting member 34. Further, the ring gear 23 is coupled to the first case member 2a via a coupling member 25.

  Here, when the input shaft 9 of the speed change mechanism 2 rotates and the clutch mechanism 14 is connected, the carrier 24 of the planetary gear set 12 rotates. Since the ring gear 23 is connected to the first case member 2 a and its rotation is restricted, the sun gear 21 rotates as the carrier 24 rotates. Here, as described above, with respect to the rotation of the carrier 24, the rotation of the sun gear 21 is increased according to the gear ratio of the carrier 24 to the sun gear 21. Therefore, the rotation input from the input shaft 9 is accelerated by the planetary gear set 12 and transmitted to the centrifugal pendulum damper 13.

  The sun gear 21 of the planetary gear set 12 connected to the centrifugal pendulum damper 13 is restricted from moving in the axial direction via the first bearing member 61 disposed on the inner peripheral side of the cover member 2c. The radial movement is restricted via the second bearing member 63 disposed on the inner peripheral side of 2c. Therefore, the centrifugal pendulum damper 13 connected to the sun gear 21 is also restricted from moving in the axial direction and the radial direction by these bearing members 61 and 63. Further, a seal member 64 fitted to the input shaft 9 is provided at the inner peripheral end of the cover member 2c, and the first bearing member 61 and the second bearing member 63 are axially over the seal member 64. It is arranged to wrap.

(Centrifugal pendulum damper)
The centrifugal pendulum damper 13 includes an annular plate-like support member 31 and a plurality of pendulums 32 that are mass bodies supported by the support member 31. The support member 31 and the pendulum 32 are formed with elongated holes 31a and 32a penetrating in the axial direction, respectively, and a plurality of support pins 33 inserted into the elongated holes 31a and 32a so as to be movable in the front-rear direction in the circumferential direction. Each pendulum 32 is supported so as to be swingable with respect to the support member 31 about a point on a circumference having a predetermined radius from the axis.

  The support member 31 is coupled to the sun gear 2 of the planetary gear set 12 by an annular plate-shaped coupling member 34 that extends radially outward on the engine side of the planetary gear set 12. The connecting member 34 is formed so that the inner peripheral portion is positioned closer to the engine 1 in the axial direction than the outer peripheral portion. The planetary gear set 12 is disposed on the transmission mechanism 2 side in the axial direction of the inner peripheral portion of the connecting member 34.

  Here, when the input shaft 9 rotates, the support member 31 rotates as the sun gear 21 of the planetary gear set 12 rotates. As a result, when torque fluctuation is transmitted to the support member 31, the support pin 33 swings back and forth in the circumferential direction in the elongated hole 31 a of the support member 31, and the pendulum 32 is longer than the support pin 33. It swings back and forth in the circumferential direction within the range of the hole 32a. When the pendulum 32 swings, a circumferential component force is generated in the support member 31 that receives the centrifugal force acting on the pendulum 32, and this component force acts as a counter torque that suppresses torque fluctuations of the support member 31 to the input shaft 9. .

  In this embodiment, in order to increase the weight of the mass body and improve the vibration damping performance, the pendulums 32 are provided in pairs so as to sandwich the support member 31 from both sides in the axial direction. 32 is supported by a common support pin 33 so as to be swingable integrally.

  Further, in order to detect the rotation speed of the support member 31 by the rotation speed sensor 15, the support member 31 is formed with a large number of detection teeth (not shown) arranged on the outer peripheral surface along the circumferential direction.

(Connection / disconnection mechanism)
As shown in FIG. 3, the clutch mechanism 14 is disposed between the clutch hub 41 and the clutch drum 42 arranged concentrically, and between the clutch hub 41 and the clutch drum 42, and is alternately engaged with these. A plurality of friction plates 44 and a piston 43 that presses the plurality of friction plates 44.

  The clutch drum 42 is spline-fitted to the input shaft 9 and is configured to rotate around the axis as the input shaft 9 rotates. The clutch hub 41 is coupled to the carrier 24 of the planetary gear set 12 at the end on the engine 1 side. A plurality of friction plates 44 that are alternately engaged with each other are disposed between the cylindrical portion of the clutch drum 42 and the cylindrical portion of the clutch hub 41 facing each other. A piston 43 that presses the friction plate 44 is disposed inside the clutch drum 42. The clutch drum 42 and the piston 43 define a hydraulic chamber 46 to which fastening hydraulic pressure is supplied. Further, a return spring 47 is provided that is a disc spring that urges the piston 43 so as to release the fastening of the friction plate 44 when no hydraulic pressure is supplied to the hydraulic chamber 46.

  When the fastening hydraulic pressure is supplied to the hydraulic chamber 46, the friction plate 44 is pressed via the piston 43 by the fastening hydraulic pressure, and the clutch mechanism 14 is fastened.

  In this embodiment, the centrifugal balance chamber forming member 48 is provided on the back of the piston 43, and the centrifugal balance chamber 49 is defined by the centrifugal balance chamber forming member 48 and the piston 43. By introducing the hydraulic oil into the centrifugal balance chamber 49, the centrifugal force acting on the hydraulic oil in the hydraulic chamber 46 is canceled by the centrifugal force acting on the hydraulic oil, and the piston 43 is in the released state of the clutch mechanism 14. Movement in the fastening direction can be suppressed.

(Rotation speed sensor)
The rotation speed sensor 15 outputs a detection signal based on the rotation speed of the centrifugal pendulum damper 13. For example, a magnetic sensor such as a pickup coil type, a Hall element type, or a magnetoresistive element type can be used.

  For example, when a pickup type magnetic sensor is used as the rotation speed sensor 15, the rotation speed sensor 15 is fixed to the cover member 2 c so as to face the outer peripheral surface of the support member 31 of the centrifugal pendulum damper 13. A detection signal based on the rotational speed of the centrifugal pendulum damper 13 is output by detecting the detected teeth formed on the outer peripheral surface of the support member 31 by the element. On / off control of the clutch mechanism 14 is performed based on this detection signal.

(Operation of transmission)
Next, the operation of the transmission 10 having the above configuration will be described.

  First, the power of the engine 1 is transmitted to the torsional damper mechanism, and at this time, torque fluctuations of the engine 1 are input to the torsional damper mechanism of the transmission 10 and are absorbed to some extent by this torsional damper mechanism. The power output from the torsional damper mechanism is transmitted to the clutch mechanism 14 via the input shaft 9 of the transmission mechanism 2 on the inner peripheral side.

  Next, when the engine 1 is running at a low speed, the clutch mechanism 14 is connected to transmit power from the input shaft 9 of the transmission mechanism 2 to the centrifugal pendulum damper 13 via the planetary gear set 12. At this time, the rotation of the input shaft 9 is accelerated because it is input to the carrier 24 of the planetary gear set 12 to which the ring gear 23 is fixed and output from the sun gear 21. The centrifugal pendulum damper 13 is driven at the increased speed of the sun gear 21. At this time, torque fluctuations that could not be absorbed by the torsional damper are absorbed by the centrifugal pendulum damper 13. In particular, since the centrifugal pendulum damper 13 is accelerated, torque fluctuations are efficiently absorbed.

  Here, the centrifugal pendulum damper 13 has the rotational speed of the support member 31 detected by the rotational speed sensor 15. When the engine 1 is at a high speed and the rotational speed of the centrifugal pendulum damper 13 exceeds a predetermined value, the clutch mechanism 14 is disconnected and no power is transmitted from the input shaft 9 of the transmission mechanism 2 to the centrifugal pendulum damper 13. The predetermined value of the rotational speed of the centrifugal pendulum damper 13 is the highest value that can ensure reliability while suppressing the enlargement of the centrifugal pendulum damper 13 in consideration of the centrifugal force acting on the centrifugal pendulum damper 13. The rotation speed is set.

  In the present embodiment, the transmission 10 includes an input shaft rotational speed sensor (not shown) for detecting the rotational speed of the input shaft 9 of the transmission mechanism 2. When the engine 1 becomes low speed again and the rotational speed of the input shaft 9 becomes a predetermined value or less, the clutch mechanism 14 is connected. The predetermined value of the rotational speed of the input shaft 9 is such that the rotational speed of the centrifugal pendulum damper 13 increased by the planetary gear set 12 when the clutch mechanism 14 is connected becomes the aforementioned maximum rotational speed. The rotation speed is set.

  Thereafter, the clutch mechanism 14 is connected and disconnected based on the rotational speed of the centrifugal pendulum damper 13 detected by the rotational speed sensor 15 and the rotational speed of the input shaft 9 detected by the input shaft rotational speed sensor. The The connection / disconnection control of the clutch mechanism 14 may be performed based only on the detection value of the input shaft rotational speed sensor.

  The rotational speed sensor 15 that directly measures the rotational speed of the centrifugal pendulum damper 13 is not directly used for connection / disconnection control of the clutch mechanism 14, and detects this failure when the rotational speed sensor 15 fails. This is a sensor for realizing fail-safe. The failure of the rotational speed sensor 15 is detected by comparing the detected value of the rotational speed of the centrifugal pendulum damper 13 by the rotational speed sensor 15 with the calculated value of the rotational speed of the centrifugal pendulum damper 13 based on the detected value of the input shaft rotational speed sensor. Is done.

  Therefore, according to the present embodiment, the clutch mechanism 14 capable of connecting / disconnecting power transmission from the input shaft 9 to the centrifugal pendulum damper 13 is provided, and the input shaft 9 is operated at a relatively high speed. By interrupting the power transmission from the input shaft 9 to the centrifugal pendulum damper 13 by the clutch mechanism 14, the centrifugal pendulum damper 13 can be prevented from being accelerated by the planetary gear set 12, so that the centrifugal pendulum damper 13 is ensured in its reliability. Therefore, it is not necessary to have a structure capable of withstanding the centrifugal force during high-speed rotation, and reliability can be ensured while suppressing an increase in the size of the centrifugal pendulum damper 13. In the low rotation range where the torque fluctuation is large, the torque fluctuation can be absorbed by the centrifugal pendulum damper 13 by connecting the clutch mechanism 14. That is, according to the present embodiment, torque fluctuations or vibration noises of the vehicle are effectively suppressed while avoiding a decrease in reliability due to an increase in the size and rotation of the centrifugal pendulum damper 13.

  With the above configuration, according to the above-described embodiment, the cover member 2c is provided on one side in the axial direction of the first case member 2a, and the centrifugal pendulum damper 13 is located inside the first case member 2a of the cover member 2c. Therefore, the lubricating oil of the speed change mechanism 2 can be shared, and the lubricating oil can be supplied to the centrifugal pendulum damper 13 without increasing the size of the oil pump.

  According to the present embodiment, the cover member 2c is provided with the vertical wall 2a1 on the other axial side of the cover member 2c for closing the opening on the one axial side of the transmission mechanism 2 housing portion in which the transmission mechanism 2 is housed. Since the centrifugal pendulum damper 13 is disposed in the accommodating portion B provided between the vertical wall portion 2a1 and the cover member 2c, the centrifugal pendulum damper 13 is disposed in the accommodating portion B isolated from the transmission mechanism 2. Therefore, the lubricating oil can be supplied in accordance with the lubrication requirement of the centrifugal pendulum damper 13. Further, the influence on the speed change mechanism 2 due to the supply of the lubricating oil to the planetary gear set 12 can be suppressed. Further, the centrifugal pendulum damper 13 can be easily removed.

  Further, according to the present embodiment, the centrifugal pendulum damper 13 is connected to the power transmission shaft via the planetary gear set 12, and the planetary gear set 12 is arranged in the housing portion B in which the centrifugal pendulum damper 13 is disposed. Thus, the influence on the speed change mechanism 2 due to the supply of the lubricating oil to the planetary gear set 12 can be suppressed.

  Further, according to the present embodiment, the centrifugal pendulum damper 13 is connected to the power transmission shaft via the clutch mechanism 14, and the clutch mechanism 14 is disposed in the accommodating portion B in which the centrifugal pendulum damper 13 is disposed. Therefore, the influence on the speed change mechanism 2 due to the supply of the lubricating oil to the clutch mechanism 14 can be suppressed.

  Moreover, according to this embodiment, since the cover member 2c closes the opening of the axial direction one side of the 1st case member 2a, the wall of the 1st case member 2a and the cover member 2c are utilized. A housing part for the centrifugal pendulum damper 13 can be formed. Moreover, the assembly property of the transmission 10 is improved.

  Further, according to the present embodiment, the centrifugal pendulum damper 13 is connected to the input shaft 9 via the planetary gear set 12, and the planetary gear set 12 is disposed in the housing portion in which the centrifugal pendulum damper 13 is disposed. In the housing portion, the planetary gear set 12 is disposed on the cover member 2c side in the axial direction, the clutch mechanism 14 is disposed on the vertical wall portion 2a1, and the clutch mechanism 14 is disposed on the vertical wall portion 2a1. Since the supply oil passage 2a2 is provided on the side of the vertical wall 2a1, it is not necessary to form the supply oil passage to the clutch mechanism 14 in the cover member 2c. 2c can be thinned.

  Moreover, according to this embodiment, it has the fastening bolt 2d for fixing the cover member 2c to the 1st case member 2a, and the centrifugal pendulum damper 13 overlapped the inner peripheral side and axial direction of the fastening bolt 2d. Since it is disposed at the position, the axial dimension can be shortened.

  Further, according to the present embodiment, the axial movement of the centrifugal pendulum damper 13 is restricted via the first bearing member 61 disposed on the inner peripheral side of the cover member 2c. The axial movement of the centrifugal pendulum damper 13 can be regulated by the cover member 2c via

  Further, according to the present embodiment, the centrifugal pendulum damper 13 is restricted from moving in the radial direction via the second bearing member 63 disposed on the inner peripheral side of the cover member 2c. Therefore, the radial movement of the centrifugal pendulum damper 13 can be restricted by the cover member 2c.

  Further, according to the present embodiment, the seal member 64 provided at the inner peripheral end of the cover member 2c and the first bearing member 61 or the second bearing member 63 are disposed so as to overlap in the axial direction. Therefore, the axial dimension can be shortened.

  Further, according to the present embodiment, the torsion dampers 5 and 7 are provided on the power transmission path, and the torsion dampers 5 and 7 are disposed outside the first case member 2a of the cover member 2c. Further, by disposing the torsion dampers 5 and 7 in a place where the lubricating oil outside the first case member 2a is not required to be supplied, it is possible to suppress an increase in unnecessary oil pump drive loss.

  The present invention is not limited to the illustrated embodiments, and various improvements and design changes can be made without departing from the scope of the present invention.

  For example, in the present embodiment, the application to the transmission having the clutch mechanism 14 is described. However, the present invention is not limited to this embodiment, and as shown in FIG. 4, the transmission does not include a connection / disconnection mechanism such as a clutch mechanism. You may apply. In the present embodiment, the present invention is applied to a transmission having a planetary gear set 12. However, the present invention is not limited to this embodiment, and may be applied to a transmission that does not include a speed increasing mechanism such as a planetary gear set 12. Furthermore, the present invention may be applied to a transmission that is not provided with either a connection mechanism or a speed increasing mechanism.

  As described above, according to the present invention, the lubricating oil can be supplied to the centrifugal pendulum damper without increasing the size of the oil pump. Therefore, this type of transmission with a centrifugal pendulum damper or a vehicle in which the transmission is mounted is suitable in the technical field of manufacture. May be used.

2a First case member (transmission case)
2a1 Vertical wall (another cover member)
2a2 Oil passage 2c Cover member (blocking part)
2d Fastening bolt (fixing member)
5, 7 Coil spring (torsional damper)
9 Input shaft (power transmission shaft)
10 Transmission 12 Planetary gear set (speed increasing mechanism)
13 Centrifugal pendulum damper 14 Clutch mechanism (connection / disconnection mechanism)
15 Rotational speed sensor (Rotational speed detection means)
61 First bearing member 63 Second bearing member 64 Seal member B Centrifugal pendulum damper accommodating portion C Transmission mechanism accommodating portion

Claims (11)

A transmission with a centrifugal pendulum damper provided with a centrifugal pendulum damper on a power transmission path, wherein lubricating oil is supplied to the centrifugal pendulum damper,
A blocking portion provided on one side in the axial direction of the transmission case;
The transmission with a centrifugal pendulum damper, wherein the centrifugal pendulum damper is disposed inside the transmission case of the closing portion. On the other side in the axial direction of the closing part, another closing part for closing the opening on one side in the axial direction of the speed change mechanism accommodating part in which the speed change mechanism is accommodated is provided.
The transmission with a centrifugal pendulum damper according to claim 1, wherein the centrifugal pendulum damper is disposed in a centrifugal pendulum damper accommodating portion provided between the another closed portion and the closed portion. . The centrifugal pendulum damper is connected to a power transmission shaft through a speed increasing mechanism,
The transmission with a centrifugal pendulum damper according to claim 2, wherein the speed increasing mechanism is disposed in the centrifugal pendulum damper accommodating portion. The centrifugal pendulum damper is connected to the power transmission shaft through a connection / disconnection mechanism,
The transmission with a centrifugal pendulum damper according to claim 2 or 3, wherein the connecting / disconnecting mechanism is disposed in the centrifugal pendulum damper accommodating portion. 5. The transmission with a centrifugal pendulum damper according to claim 1, wherein the closing portion is a cover member that closes an opening on one axial side of the transmission case. The centrifugal pendulum damper is connected to a power transmission shaft through a speed increasing mechanism,
The speed increasing mechanism is disposed in the centrifugal pendulum damper accommodating portion,
In the centrifugal pendulum damper housing portion, the speed increasing mechanism is disposed on the cover member side in the axial direction, while the connection / disconnection mechanism is disposed on the other closing portion side,
The transmission with a centrifugal pendulum damper according to claim 5, wherein a supply oil passage to the connection / disconnection mechanism is provided in the another closing portion. A fixing member for fixing the cover member to the transmission case;
The transmission with centrifugal pendulum damper according to claim 5 or 6, wherein the centrifugal pendulum damper is disposed at an inner circumferential side of the fixed member and at a position overlapping in the axial direction. 8. The axial movement of the centrifugal pendulum damper is restricted via a first bearing member disposed on the inner peripheral side of the cover member, according to claim 5. Transmission with centrifugal pendulum damper. The radial movement of the centrifugal pendulum damper is regulated through a second bearing member disposed on the inner peripheral side of the cover member, according to any one of claims 5 to 8. Transmission with centrifugal pendulum damper. The seal member provided at the inner peripheral end of the cover member and the first bearing member or the second bearing member are disposed so as to overlap in the axial direction. 9. A transmission with a centrifugal pendulum damper according to 9. A torsion damper is provided on the power transmission path,
The transmission with a centrifugal pendulum damper according to any one of claims 1 to 10, wherein the torsional damper is disposed outside the transmission case of the closing portion.

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