JP2015140738A - Transmission system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmission system capable of stating an internal combustion engine early, after a start request of the internal combustion engine.SOLUTION: A first auto tensioner 20 has a first arm 21 rotatably supported by a shaft portion 10 at one end; and a first tensioner pulley 22 provided at the other end of the first arm 21 so as to rotate while abutting one side to a specified auxiliary machine pulley 5 of a belt 9, and relatively move to an engine 2. A second auto tensioner 30 has a second arm 31 rotatably supported by the shaft portion 10 at one end; and a second tensioner pulley 32 provided on the other end of the second arm 31 so as to rotate while abutting on the other side to the specified auxiliary machine pulley 5 of the belt 9 and relatively move to the engine 2. A distance dx1 between a rotation center c1 of the first tensioner pulley 22 and an axis Ax1 of a specified auxiliary machine shaft 12 is different from a distance dx2 between a rotation center c2 of the second tensioner pulley 32 and the axis Ax1.

Description

  The present invention relates to a transmission system that transmits power between a specific auxiliary machine and an internal combustion engine.

  2. Description of the Related Art Conventionally, there is known a transmission system in which two auto tensioners for adjusting belt tension are provided integrally with a specific auxiliary machine. For example, in the transmission system of Patent Document 1, two automatic tensioners are provided in the specified auxiliary machine so that the end of each arm opposite to the tensioner pulley can rotate on the axis of the specified auxiliary machine. The physique is being downsized.

JP 2009-287776 A

  In the transmission system of Patent Document 1, the arms of the two auto tensioners are formed to have the same length. That is, the distance between the rotation center of one tensioner pulley and the axis line of the specific auxiliary machine is the same as the distance between the rotation center of the other tensioner pulley and the axis line of the specific auxiliary machine. Therefore, when starting the internal combustion engine by powering the specified auxiliary machine, especially when the belt is powered, the arm located at the tension side position swings greatly, and the `` specific compensation '' is determined from the stationary position of the tensioner pulley relative to the internal combustion engine. There is a possibility that the relative movement amount to the “position where the rotation of the machine starts to be transmitted to the drive shaft via the belt” becomes large. Therefore, in the case of the transmission system of Patent Document 1, there may be a time delay until the internal combustion engine is started after the internal combustion engine is requested to start.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a transmission system that can start an internal combustion engine at an early stage after a request for starting the internal combustion engine.

The present invention is a transmission system for transmitting power between a specific auxiliary machine capable of powering operation or regenerative operation and an internal combustion engine, and includes a drive pulley, a specific auxiliary pulley, an endless transmission member, a shaft portion, and a first auto tensioner. And a second auto tensioner and an urging means.
The drive pulley is attached to the drive shaft of the internal combustion engine and is rotatable with the drive shaft. The specific accessory pulley is attached to a specific accessory shaft that is a shaft of the specific accessory, and is rotatable together with the specific accessory shaft. The endless transmission member is wound around the drive pulley and the specific accessory pulley. The shaft portion is provided in the vicinity of the specific auxiliary machine or the specific auxiliary machine.

  The first auto tensioner has a first arm and a first tensioner pulley. One end of the first arm is rotatably supported by the shaft portion. The first tensioner pulley is rotatable so as to be able to rotate relative to the internal combustion engine when the first arm rotates about the shaft portion while abutting on one side with respect to the specific accessory pulley of the endless transmission member. It is provided at the other end of one arm. The first auto tensioner can adjust the tension of the endless transmission member by moving the first tensioner pulley relative to the internal combustion engine.

The second auto tensioner has a second arm and a second tensioner pulley. One end of the second arm is rotatably supported by the shaft portion. The second tensioner pulley can rotate while contacting the other auxiliary pulley of the endless transmission member on the other side, and the second arm can rotate relative to the internal combustion engine by rotating about the shaft portion. Provided at the other end of the two arms. The second auto tensioner can adjust the tension of the endless transmission member by moving the second tensioner pulley relative to the internal combustion engine.
The biasing means biases the first tensioner pulley and the second tensioner pulley in a direction approaching each other.

  In the present invention, the distance between the rotation center of the first tensioner pulley and the axis of the specific accessory shaft is different from the distance between the rotation center of the second tensioner pulley and the axis of the specific accessory shaft. For example, a first tensioner pulley or a second tensioner pulley that is located at a position that becomes a tension side when the specified auxiliary machine performs a power running operation on the first tensioner pulley side or the second tensioner pulley side with respect to the specified auxiliary machine pulley of the endless transmission member. The rotation center of the second tensioner pulley or the rotation axis of the first tensioner pulley located at a position on the loose side when the specific auxiliary machine performs a power running operation and the axis line of the specific auxiliary machine shaft When it is set to be larger than the distance, when starting the internal combustion engine by powering the specific auxiliary machine, the rotation of the first arm or the second arm, that is, the swing of the first arm or the second arm with respect to the internal combustion engine is performed. Can be small. That is, at this time, the relative movement amount from the stationary position of the first tensioner pulley or the second tensioner pulley relative to the internal combustion engine to the “position at which the rotation of the specific auxiliary machine begins to be transmitted to the drive shaft via the endless transmission member” is reduced. can do. Thereby, the internal combustion engine can be started at an early stage after the start request for the internal combustion engine.

The schematic diagram which shows the transmission system by 1st Embodiment of this invention. The schematic diagram which shows the 1st tensioner pulley of the transmission system by 1st Embodiment of this invention, and its vicinity. The schematic diagram which shows the transmission system by 2nd Embodiment of this invention. The schematic diagram which shows the transmission system by 3rd Embodiment of this invention. The schematic diagram which shows the transmission system by 4th Embodiment of this invention. The schematic diagram which shows the transmission system by 5th Embodiment of this invention.

Hereinafter, a transmission system according to a plurality of embodiments of the present invention will be described with reference to the drawings. Note that, in a plurality of embodiments, substantially the same components are denoted by the same reference numerals, and description thereof is omitted.
(First embodiment)

  A transmission system according to a first embodiment of the present invention is shown in FIG. The transmission system 1 is mounted on a vehicle (not shown) and transmits power between an internal combustion engine (hereinafter referred to as “engine”) 2 and a specific auxiliary machine 11. The transmission system 1 transmits the power of the engine 2 and the specific auxiliary machine 11 to the auxiliary machines 13 other than the specific auxiliary machine 11.

  As shown in FIG. 1, the transmission system 1 is provided in the engine 2. The transmission system 1 includes a drive pulley 4, a specific accessory pulley 5, an accessory pulley 6, a belt 9 as an endless transmission member, a shaft portion 10, a first auto tensioner 20, a second auto tensioner 30, an urging means 40, and And an electronic control unit (hereinafter referred to as “ECU”) 50 as a control unit.

  The drive pulley 4 is formed in a disc shape, and is attached so that the center portion is connected to the drive shaft 3 of the engine 2. As a result, the drive pulley 4 can rotate together with the drive shaft 3. The specific auxiliary machine pulley 5 is formed in a disk shape and is attached so that the center part is connected to the specific auxiliary machine shaft 12 which is the shaft of the specific auxiliary machine 11. Thereby, the specific auxiliary machine pulley 5 can be rotated together with the specific auxiliary machine shaft 12. The auxiliary machine pulley 6 is formed in a disk shape, and is attached so that the center part is connected to the shaft 14 of the auxiliary machine 13. As a result, the auxiliary pulley 6 can rotate together with the shaft 14.

  The side opposite to the drive pulley 4 of the drive shaft 3 is connected to the input shaft of the transmission as a drive target via, for example, a clutch means (not shown). The output shaft of the transmission is connected to the axle via a differential (not shown). Therefore, when the drive shaft 3 and the input shaft of the transmission are connected by the clutch means, the rotation of the drive shaft 3 is transmitted to the drive wheels provided at both ends of the axle via the output shaft, the differential and the axle. To do. Thereby, the vehicle travels.

  The belt 9 is formed in an annular shape having no end portion, for example, with rubber and wire. The belt 9 elastically deforms and expands and contracts when an external force is applied. The belt 9 is provided so as to be wound around the drive pulley 4, the specific accessory pulley 5, and the accessory pulley 6. Thereby, for example, when the drive pulley 4 rotates, the rotation is transmitted to the auxiliary pulley 6 and the specific auxiliary pulley 5, and the auxiliary pulley 6 and the specific auxiliary pulley 5 rotate. That is, the rotation of each pulley is transmitted to other pulleys via the belt 9. In the present embodiment, during the normal operation of the engine 2, the rotation direction of the drive shaft 3, that is, the drive pulley 4, is the clockwise direction in FIG. Therefore, the belt 9 and each pulley also rotate in the clockwise direction. In the present embodiment, clockwise rotation is referred to as “forward rotation” and counterclockwise rotation is referred to as “reverse rotation”.

  In the present embodiment, the specific auxiliary machine 11 rotates (power running operation) the specific auxiliary machine shaft 12 when power is supplied, for example, and generates electric power (regenerative operation) when torque is input to the specific auxiliary machine shaft 12. It is a motor generator. Therefore, for example, when the engine 2 is stopped, the specific auxiliary machine 11 rotates the drive pulley 4 by rotationally driving (powering operation), that is, cranking the engine 2 and starting the engine 2. Can do. Here, the specific auxiliary machine 11 functions as a starter.

The specific auxiliary machine 11 further rotates the drive pulley 4 by rotating and driving (powering operation), for example, when the engine 2 is operating, that is, when the belt 9 is rotating, thereby rotating the drive shaft 3. Assist. Here, the specific auxiliary machine 11 functions as an assist motor.
On the other hand, the specific auxiliary machine 11 generates power (regenerative operation) by inputting torque to the specific auxiliary machine pulley 5 when the engine 2 is operating, that is, when the belt 9 is rotating, for example. Here, the specific auxiliary machine 11 functions as a generator (generator).
Thus, in this embodiment, the specific auxiliary machine 11 is an auxiliary machine that integrates a plurality of functions, for example, an ISG (Integrated Starter Generator).

The auxiliary machine 13 is, for example, any one of an air conditioning compressor, a water pump, a power steering pump, and the like, and is driven when torque is input to the shaft 14. That is, the auxiliary machine 13 is driven when the belt 9 rotates.
In the transmission system 1, the most loose position (the position where the tension is the smallest) of the belt 9 is changed by the operation of the specific auxiliary machine 11. For example, when the engine 2 is started or assisted, that is, when the specific auxiliary machine 11 is powered, the most loose position of the belt 9 is between the specific auxiliary machine pulley 5 and the auxiliary machine pulley 6. On the other hand, when the specific auxiliary machine 11 generates power, that is, when the specific auxiliary machine 11 is in a regenerative operation, the most loose position of the belt 9 is between the drive pulley 4 and the specific auxiliary machine pulley 5. Further, the tension of the belt 9 is changed by the operation of the specific auxiliary machine 11.

  The shaft portion 10 is formed in a columnar shape, for example, and is provided in the housing 19 of the specific auxiliary machine 11. The shaft portion 10 is provided at a position away from the axis Ax1 by a predetermined distance so that the axis Ax2 is parallel to the axis Ax1 of the specific accessory shaft 12 (see FIG. 1). That is, in the present embodiment, the shaft portion 10 is provided such that the axis line Ax2 is at a position different from the axis line Ax1 of the specific auxiliary machine shaft 12. The shaft portion 10 is provided at a position where the distance between the axis Ax2 and the axis Ax1 of the specific accessory shaft 12 is smaller than the radius of the specific accessory pulley 5.

The first auto tensioner 20 includes a first arm 21, a first tensioner pulley 22, a first shaft portion 23, and the like.
The first arm 21 is formed in a long shape. The first arm 21 is provided such that one end thereof is rotatably supported by the shaft portion 10. As a result, the first arm 21 can rotate relative to the engine 2 about the axis Ax2.
The first tensioner pulley 22 is formed in a disc shape, and is provided so as to be in contact with the specific auxiliary machine pulley 5 of the belt 9 on one side, that is, between the specific auxiliary machine pulley 5 and the drive pulley 4. .

  The first shaft portion 23 is provided at the other end of the first arm 21. The first shaft portion 23 rotatably supports the center (rotation center c1) of the first tensioner pulley 22. Therefore, the first tensioner pulley 22 can rotate around the rotation center c1. With this configuration, the first tensioner pulley 22 can rotate while contacting one side of the specific accessory pulley 5 of the belt 9 and moves relative to the engine 2 about the shaft portion 10 in the x1 direction or the y1 direction. (Rotation) is possible. When the first arm 21 rotates about the shaft 10 and the relative position of the first tensioner pulley 22 to the engine 2 changes, one side of the belt 9 with respect to the specific accessory pulley 5, that is, the specific accessory pulley 5 and The tension with the drive pulley 4 changes.

The second auto tensioner 30 includes a second arm 31, a second tensioner pulley 32, a second shaft portion 33, and the like.
The second arm 31 is formed in a long shape. The second arm 31 is provided such that one end thereof is rotatably supported by the shaft portion 10. As a result, the second arm 31 can rotate relative to the engine 2 about the axis Ax2 in the same manner as the first arm 21.
The second tensioner pulley 32 is formed in a disc shape and is provided so as to be in contact with the specific auxiliary machine pulley 5 of the belt 9 on the other side, that is, between the specific auxiliary machine pulley 5 and the auxiliary machine pulley 6. Yes.

  The second shaft portion 33 is provided at the other end of the second arm 31. The second shaft portion 33 rotatably supports the center (rotation center c2) of the second tensioner pulley 32. Therefore, the second tensioner pulley 32 can rotate around the rotation center c2. With this configuration, the second tensioner pulley 32 can rotate while contacting the other auxiliary pulley 5 of the belt 9 on the other side, and can move relative to the engine 2 in the x2 direction or the y2 direction around the shaft portion 10. (Rotation) is possible. When the second arm 31 rotates about the shaft portion 10 and the relative position of the second tensioner pulley 32 to the engine 2 changes, the other side of the belt 9 with respect to the specific accessory pulley 5, that is, the specific accessory pulley 5 and The tension between the auxiliary pulley 6 changes.

  The biasing means 40 is formed, for example, in a substantially C shape by metal, and the other end is connected to the second shaft portion 33 of the second auto tensioner 30 so that one end is connected to the first shaft portion 23 of the first auto tensioner 20. It is provided to connect. The biasing means 40 biases the first shaft portion 23 and the second shaft portion 33 in a direction in which the first shaft portion 23 and the second shaft portion 33 approach each other. In other words, the first tensioner pulley 22 and the second tensioner pulley 32 are urged by the urging means 40 in directions approaching each other (x1 direction and x2 direction), that is, in a direction in which the tension of the belt 9 increases.

  With the above configuration, the first auto tensioner 20 can adjust the tension of the belt 9 by the relative movement of the first tensioner pulley 22 with respect to the engine 2 in the x1 direction or the y1 direction. For example, the first auto tensioner 20 can eliminate looseness between the drive pulley 4 and the specific accessory pulley 5 of the belt 9 when the specific accessory 11 performs a regenerative operation.

  The second auto tensioner 30 can adjust the tension of the belt 9 by the second tensioner pulley 32 moving relative to the engine 2 in the x2 direction or the y2 direction. The second auto tensioner 30 can eliminate, for example, loosening between the specific accessory pulley 5 and the accessory pulley 6 of the belt 9 when the specific accessory 11 is powered.

  In the present embodiment, as shown in FIG. 1, the distance dx1 between the rotation center c1 of the first tensioner pulley 22 and the axis Ax1 of the specific accessory shaft 12 is equal to the rotation center c2 of the second tensioner pulley 32 and the specific accessory shaft 12. It is different from the distance dx2 with respect to the axis Ax1. FIG. 1 shows the state of the transmission system 1 when the engine 2 and the specific auxiliary machine 11 are stopped, that is, when the rotation of the drive pulley 4 and the specific auxiliary machine pulley 5 is stopped. Therefore, in this embodiment, each part is formed and arranged so that the distance dx1 and the distance dx2 are different when at least the rotation of the drive pulley 4 and the specific auxiliary pulley 5 is stopped.

  More specifically, the first auxiliary pulley 5 of the belt 9 is located on the first tensioner pulley 22 side or the second tensioner pulley 32 side at the position that becomes the tension side when the specific auxiliary machine 11 performs a power running operation. The distance dx1 between the rotation center c1 of the tensioner pulley 22 and the axis Ax1 of the specific auxiliary machine shaft 12 is equal to the rotation center c2 of the second tensioner pulley 32 that is located on the loose side when the specific auxiliary machine 11 is powered. It is larger than the distance dx2 with the axis Ax1 of the machine shaft 12.

  In the present embodiment, the first distance d1, which is the distance between the rotation center c1 of the first tensioner pulley 22 and the axis Ax2 of the shaft portion 10, is the rotation center c2 of the second tensioner pulley 32 and the axis Ax2 of the shaft portion 10. Is the same as the second distance d2, which is the distance to Thereby, the length of the 1st arm 21 and the length of the 2nd arm 31 can be made the same.

In the present embodiment, when the engine 2 is started, the specific auxiliary machine 11 is powered to move the first tensioner pulley 22 relative to the engine 2 from the stationary position in the y1 direction, and the second tensioner pulley 32 moves to the engine 2. In contrast, when the force F ₁ acting on the first tensioner pulley 22 from the belt 9 and the force F ₂ acting on the second tensioner pulley 32 from the belt 9 are balanced, the first tensioner pulley 22 moves. And the relative movement with respect to the engine 2 of the 2nd tensioner pulley 32 stops. Thereby, the rotation of the specific auxiliary machine 11 starts to be transmitted to the drive shaft 3 via the belt 9.

Here, as shown in FIG. 2, when the winding angle of the belt 9 with respect to the first tensioner pulley 22 is θ ₁ and the tension acting on one side and the other side of the belt 9 with respect to the first tensioner pulley 22 is T, the belt The force F ₁ acting on the first tensioner pulley 22 from 9 is
_{F 1 = 2Tsin (θ 1/} 2) ··· Formula 1
It is represented by Further, when the winding angle of the belt 9 with respect to the second tensioner pulley 32 is θ ₂ and the tension acting on one side and the other side of the belt 9 with respect to the second tensioner pulley 32 is T, the belt 9 changes to the second tensioner pulley 32. The acting force F ₂ is
_{F 2 = 2Tsin (θ 2/} 2) ··· formula 2
It is represented by

In this embodiment, when the force F ₁ acting on the first tensioner pulley 22 from the belt 9 and the force F ₂ acting on the second tensioner pulley 32 from the belt 9 are balanced, the belt 9 is wound around the first tensioner pulley 22. The angle θ ₁ is smaller than when the specific auxiliary machine 11 is stopped (when the first tensioner pulley 22 is in the stationary position), and the winding angle θ ₂ of the belt 9 with respect to the second tensioner pulley 32 is when the specific auxiliary machine 11 is stopped ( (When the second tensioner pulley 32 is in the stationary position).

  Further, in the present embodiment, since the distance dx1 is larger than the distance dx2, for example, when the engine 2 is started by powering the specific auxiliary machine 11 as compared with the configuration in which the distance dx1 and the distance dx2 are set to be the same, The rotation of the first arm 21, that is, the swing of the first arm 21 with respect to the engine 2 is reduced. That is, at this time, the relative movement amount from the stationary position of the first tensioner pulley 22 with respect to the engine 2 to the “position at which the rotation of the specific auxiliary machine 11 starts to be transmitted to the drive shaft 3 via the belt 9” becomes small.

  The ECU 50 is a small computer having a CPU as arithmetic means, ROM and RAM as storage means, and input / output means. The ECU 50 performs processing in accordance with a program stored in the ROM based on signals from various sensors attached to each part of the vehicle, and controls the vehicle in an integrated manner by controlling driving of various devices of the vehicle.

The ECU 50 controls the operation of the specific auxiliary machine 11 based on signals from various sensors. When the ECU 50 determines that “a request to start the engine 2 has been generated (the start condition for the engine 2 has been established)” based on signals from various sensors, the ECU 50 causes the specific auxiliary machine 11 to perform a power running operation via the belt 9. Then, the drive pulley 4 (drive shaft 3) is rotated to crank the engine 2. As a result, the engine 2 is started.
In this embodiment, since the distance dx1 is larger than the distance dx2, when the engine 2 is started by powering the specific auxiliary machine 11, the rotation of the specific auxiliary machine 11 is determined from the stationary position of the first tensioner pulley 22 with respect to the engine 2. The relative movement amount to “a position where transmission to the drive shaft 3 starts via the belt 9” becomes small.

  As described above, (1) In the present embodiment, the drive pulley 4 is attached to the drive shaft 3 of the engine 2 and can be rotated together with the drive shaft 3. The specific accessory pulley 5 is attached to a specific accessory shaft 12 that is a shaft of the specific accessory 11 and is rotatable together with the specific accessory shaft 12. The belt 9 is wound around the drive pulley 4 and the specific accessory pulley 5. The shaft portion 10 is provided in the specific auxiliary machine 11.

  The first auto tensioner 20 has a first arm 21 and a first tensioner pulley 22. One end of the first arm 21 is rotatably supported by the shaft portion 10. The first tensioner pulley 22 can rotate while contacting one side of the specific accessory pulley 5 of the belt 9, and can move relative to the engine 2 by the first arm 21 rotating about the shaft portion 10. It is provided at the other end of the first arm 21. The first auto tensioner 20 can adjust the tension of the belt 9 as the first tensioner pulley 22 moves relative to the engine 2.

  The second auto tensioner 30 has a second arm 31 and a second tensioner pulley 32. One end of the second arm 31 is rotatably supported by the shaft portion 10. The second tensioner pulley 32 can rotate while contacting the other auxiliary pulley 5 of the belt 9 on the other side, and can move relative to the engine 2 by the second arm 31 rotating around the shaft portion 10. It is provided at the other end of the second arm 31. The second auto tensioner 30 can adjust the tension of the belt 9 by the relative movement of the second tensioner pulley 32 with respect to the engine 2.

The urging means 40 urges the first tensioner pulley 22 and the second tensioner pulley 32 in a direction approaching each other.
In the present embodiment, the distance dx1 between the rotation center c1 of the first tensioner pulley 22 and the axis Ax1 of the specific accessory shaft 12 is the distance dx2 between the rotation center c2 of the second tensioner pulley 32 and the axis Ax1 of the specific accessory shaft 12. Different.

(2) In the present embodiment, the specific auxiliary machine pulley 5 of the belt 9 is located on the first tensioner pulley 22 side or the second tensioner pulley 32 side at a position that becomes the tension side when the specific auxiliary machine 11 performs a power running operation. The distance dx1 between the rotation center c1 of the first tensioner pulley 22 and the axis Ax1 of the specific accessory shaft 12 is the rotation center c2 of the second tensioner pulley 32 that is located on the loose side when the specific accessory 11 is powered. The specific auxiliary machine shaft 12 is set to be larger than the distance dx2 with respect to the axis Ax1. Therefore, when the engine 2 is started by powering the specific auxiliary machine 11, the rotation of the first arm 21, that is, the swing of the first arm 21 with respect to the engine 2 can be reduced. That is, at this time, the relative movement amount from the stationary position of the first tensioner pulley 22 relative to the engine 2 to the “position at which the rotation of the specific auxiliary machine 11 starts to be transmitted to the drive shaft 3 via the belt 9” can be reduced. it can. Thereby, the engine 2 can be started at an early stage after the engine 2 is requested to start.
In the present embodiment, in particular, when the specific auxiliary machine 11 is in a power running operation when the engine 2 is started and the output of the engine 2 is 0, or when the engine 2 is assisted, the power running of the specific auxiliary machine 11 is The peristalsis of the first arm 21 relative to the engine 2 can be reduced, for example, when the output is larger than the output on the second side.

  (3) In the present embodiment, the shaft portion 10 is provided such that the axis line Ax2 is at a position different from the axis line Ax1 of the specific auxiliary machine shaft 12. The first distance d1 that is the distance between the rotation center c1 of the first tensioner pulley 22 and the axis Ax2 of the shaft portion 10 is the second distance that is the distance between the rotation center c2 of the second tensioner pulley 32 and the axis Ax2 of the shaft portion 10. It is the same as the distance d2. In the present embodiment, the position of the shaft portion 10 with respect to the specific accessory shaft 12 and the relationship between the first distance d1 and the second distance d2 are specifically exemplified. In the present embodiment, since the first distance d1 and the second distance d2 are the same, for example, by making the lengths of the first arm 21 and the second arm 31 the same, the members can be shared. .

  (6) In the present embodiment, the shaft portion 10 is provided at a position where the distance between the axis Ax2 and the axis Ax1 of the specific accessory shaft 12 is smaller than the radius of the specific accessory pulley 5. Thereby, the physique of the transmission system 1 can be made small.

(Second Embodiment)
A transmission system according to a second embodiment of the present invention is shown in FIG. The second embodiment differs from the first embodiment in the position of the shaft portion 10 with respect to the specific auxiliary machine shaft 12, the relationship between the first distance d1 and the second distance d2, and the like.

As shown in FIG. 3, in the second embodiment, the shaft portion 10 is provided such that the axis line Ax2 coincides with the axis line Ax1 of the specific auxiliary machine shaft 12.
The first distance d1 that is the distance between the rotation center c1 of the first tensioner pulley 22 and the axis Ax2 of the shaft portion 10 is the second distance that is the distance between the rotation center c2 of the second tensioner pulley 32 and the axis Ax2 of the shaft portion 10. Different from the distance d2.

  In the present embodiment, the first distance d1 is equal to the distance dx1 between the rotation center c1 of the first tensioner pulley 22 and the axis Ax1 of the specific auxiliary machine shaft 12. The second distance d2 is equal to the distance dx2 between the rotation center c2 of the second tensioner pulley 32 and the axis Ax1 of the specific auxiliary machine shaft 12.

  In the present embodiment, the first tensioner is located on the tensioning side when the specific auxiliary machine 11 performs a power running operation on the first tensioner pulley 22 side or the second tensioner pulley 32 side with respect to the specific auxiliary machine pulley 5 of the belt 9. The rotation center c2 of the second tensioner pulley 32 and the specified accessory shaft are located at a position where the distance dx1 between the rotation center c1 of the pulley 22 and the axis Ax1 of the specified accessory shaft 12 is on the loose side when the specified accessory 11 is powered. Since it is set to be larger than the distance dx2 with 12 axis lines Ax1, the engine 2 can be started early after the start request for the engine 2 as in the first embodiment.

  As described above, (4) in the present embodiment, the shaft portion 10 is provided such that the axis Ax2 coincides with the axis Ax1 of the specific auxiliary machine shaft 12. The first distance d1 that is the distance between the rotation center c1 of the first tensioner pulley 22 and the axis Ax2 of the shaft portion 10 is the second distance that is the distance between the rotation center c2 of the second tensioner pulley 32 and the axis Ax2 of the shaft portion 10. Different from the distance d2. In the present embodiment, the position of the shaft portion 10 with respect to the specific accessory shaft 12 and the relationship between the first distance d1 and the second distance d2 are specifically exemplified. In the present embodiment, the shaft portion 10 is provided such that the axis line Ax2 coincides with the axis line Ax1 of the specific accessory shaft 12, so that the size of the transmission system 1 can be further reduced.

(Third embodiment)
A transmission system according to a third embodiment of the present invention is shown in FIG. The third embodiment differs from the first embodiment in the relationship between the first distance d1 and the second distance d2.
As shown in FIG. 4, in the third embodiment, as in the first embodiment, the shaft portion 10 is provided such that the axis Ax <b> 2 is different from the axis Ax <b> 1 of the specific auxiliary machine shaft 12.

  In the third embodiment, unlike the first embodiment, the first distance d1 that is the distance between the rotation center c1 of the first tensioner pulley 22 and the axis Ax2 of the shaft portion 10 is the rotation center c2 of the second tensioner pulley 32. This is different from the second distance d2, which is the distance from the axis Ax2 of the shaft portion 10.

  More specifically, the first auxiliary pulley 5 of the belt 9 is located on the first tensioner pulley 22 side or the second tensioner pulley 32 side at the position that becomes the tension side when the specific auxiliary machine 11 performs a power running operation. The distance (first distance d1) between the rotation center c1 of the tensioner pulley 22 and the axis Ax2 of the shaft portion 10 is the rotation center of the second tensioner pulley 32 that is located on the loose side when the specific auxiliary machine 11 is powered. Greater than the distance (second distance d2) between the shaft portion 10 and the axis Ax2.

  In the third embodiment, as in the first embodiment, the tension is applied when the specific auxiliary machine 11 performs a power running operation on the first tensioner pulley 22 side or the second tensioner pulley 32 side with respect to the specific auxiliary machine pulley 5 of the belt 9. The second tensioner is located at a position where the distance dx1 between the rotation center c1 of the first tensioner pulley 22 located at the side position and the axis Ax1 of the specific auxiliary machine shaft 12 is on the loose side when the specific auxiliary machine 11 is powered. It is set larger than the distance dx2 between the rotation center c2 of the pulley 32 and the axis Ax1 of the specific auxiliary machine shaft 12. Therefore, as in the first embodiment, after the engine 2 is requested to start, the engine 2 can be started early.

  As described above, (5) in the present embodiment, the shaft portion 10 is provided so that the axis line Ax2 is different from the axis line Ax1 of the specific auxiliary machine shaft 12. The first distance d1 that is the distance between the rotation center c1 of the first tensioner pulley 22 and the axis Ax2 of the shaft portion 10 is the second distance that is the distance between the rotation center c2 of the second tensioner pulley 32 and the axis Ax2 of the shaft portion 10. Different from the distance d2. In the present embodiment, the position of the shaft portion 10 with respect to the specific accessory shaft 12 and the relationship between the first distance d1 and the second distance d2 are specifically exemplified.

  (7) In the present embodiment, the specific auxiliary machine 11 on the first tensioner pulley 22 side or the second tensioner pulley 32 side with respect to the specific auxiliary machine pulley 5 of the belt 9 is positioned on the tension side when the specific auxiliary machine 11 performs a power running operation. The distance (first distance d1) between the rotation center c1 of the first tensioner pulley 22 and the axis Ax2 of the shaft portion 10 is the second tensioner pulley located at a position on the loose side when the specific auxiliary machine 11 is powered. It is larger than the distance (second distance d2) between the rotation center 32 and the axis Ax2 of the shaft portion 10. In the present embodiment, the relationship between the first distance d1 and the second distance d2 is illustrated more specifically.

(Fourth embodiment)
A transmission system according to a fourth embodiment of the present invention is shown in FIG. The fourth embodiment is different from the first embodiment in that there is one more element constituting the transmission system.
As shown in FIG. 5, the fourth embodiment further includes an actuator 60.

  In the fourth embodiment, the shaft portion 10 is provided so as to be movable relative to the specific accessory shaft 12. The actuator 60 is provided in the housing 19 of the specific auxiliary machine 11, for example. The actuator 60 can move the shaft portion 10 relative to the specific accessory shaft 12 by operating. In the present embodiment, the actuator 60 can move the shaft portion 10 relative to the specific accessory shaft 12 in the x3 direction or the y3 direction (see FIG. 5). Here, the x3 direction is a direction toward the tension side when the specific auxiliary machine 11 performs the power running operation on the first tensioner pulley 22 side or the second tensioner pulley 32 side with respect to the specific auxiliary machine pulley 5 of the belt 9. is there. y3 is a direction toward the loose side when the specific auxiliary machine 11 performs a power running operation on the first tensioner pulley 22 side or the second tensioner pulley 32 side with respect to the specific auxiliary machine pulley 5 of the belt 9.

In the present embodiment, the ECU 50 can change the position of the shaft portion 10 with respect to the specific accessory shaft 12 by controlling the operation of the actuator 60 to move the shaft portion 10 relative to the specific accessory shaft 12. .
In the present embodiment, the ECU 50 sets the position of the shaft portion 10 with respect to the specific auxiliary machine shaft 12 to an arbitrary position by controlling the operation of the actuator 60 according to the operation state of the power running operation or the regenerative operation of the specific auxiliary machine 11. Is possible.

  For example, the ECU 50 controls the operation of the actuator 60 so that the shaft 10 is positioned in the x3 direction with respect to the specific accessory shaft 12 when the specific accessory 11 is powered. As a result, the first tensioner pulley 22 is located on the first tensioner pulley 22 side or the second tensioner pulley 32 side with respect to the specific auxiliary machine pulley 5 of the belt 9 and is located on the tension side when the specific auxiliary machine 11 is powered. The distance dx1 between the rotation center c1 of the second auxiliary pulley 32 and the axis Ax1 of the specific auxiliary machine shaft 12 is the distance between the rotation center c2 of the second tensioner pulley 32 and the specific auxiliary machine shaft 12 that are located on the loose side when the specific auxiliary machine 11 is powered. It is set to be larger than the distance dx2 with the axis Ax1. Therefore, when the engine 2 is started by powering the specific auxiliary machine 11, the rotation of the first arm 21, that is, the swing of the first arm 21 with respect to the engine 2 can be reduced. That is, at this time, the relative movement amount from the stationary position of the first tensioner pulley 22 relative to the engine 2 to the “position at which the rotation of the specific auxiliary machine 11 starts to be transmitted to the drive shaft 3 via the belt 9” can be reduced. it can. Thereby, the engine 2 can be started at an early stage after the engine 2 is requested to start.

  On the other hand, when the specific auxiliary machine 11 is regeneratively operated, the ECU 50 controls the operation of the actuator 60 so that the shaft portion 10 is positioned in the y3 direction with respect to the specific auxiliary machine shaft 12. As a result, the second tensioner pulley 32 located at a position on the tension side when the specific auxiliary machine 11 performs a regenerative operation on the first tensioner pulley 22 side or the second tensioner pulley 32 side with respect to the specific auxiliary machine pulley 5 of the belt 9. The distance dx2 between the rotation center c2 of the first auxiliary shaft 12 and the axis Ax1 of the specific auxiliary machine shaft 12 is such that the rotation center c1 of the first tensioner pulley 22 located on the loose side when the specific auxiliary machine 11 is regeneratively operated and the specific auxiliary machine shaft 12 It is set to be larger than the distance dx1 with the axis Ax1. Therefore, when generating electricity by regenerating the specific auxiliary machine 11, the rotation of the second arm 31, that is, the peristalsis of the second arm 31 with respect to the engine 2 can be reduced. That is, at this time, the relative movement from the stationary position of the second tensioner pulley 32 with respect to the engine 2 to the “position where the rotation of the drive shaft 3 starts to be transmitted to the specific accessory 11 (specific accessory shaft 12) via the belt 9”. The amount can be reduced. Thereby, after the power generation request | requirement of the specific auxiliary machine 11, the electric power generation by the specific auxiliary machine 11 can be started at an early stage.

  As described above, (8) the present embodiment further includes the actuator 60 capable of moving the shaft portion 10 relative to the specific accessory shaft 12. Further, the ECU 50 can control the operation of the actuator 60. The ECU 50 can set the position of the shaft portion 10 with respect to the specific auxiliary machine shaft 12 to an arbitrary position by controlling the operation of the actuator 60 according to the power running operation or the regenerative operation state of the specific auxiliary machine 11. Therefore, in this embodiment, after the start request for the engine 2 can be started, the engine 2 can be started early, and after the power generation request for the specific auxiliary machine 11, the power generation by the specific auxiliary machine 11 can be started early. .

(Fifth embodiment)
A transmission system according to a fifth embodiment of the present invention is shown in FIG. The fifth embodiment is different from the first embodiment in that the number of elements constituting the transmission system is one less.

  As shown in FIG. 6, in the fifth embodiment, unlike the first embodiment, the engine 2 is not provided with the auxiliary machine 13. Therefore, unlike the first embodiment, the transmission system does not include the auxiliary pulley 6. Therefore, in the fifth embodiment, the belt 9 is provided so as to be wound around the drive pulley 4 and the specific auxiliary pulley 5.

  The fifth embodiment is the same as the first embodiment except for the configuration described above. Therefore, as in the first embodiment, after the engine 2 is requested to start, the engine 2 can be started early. As described above, the present invention can also be applied to the engine 2 that does not include any other auxiliary machine (auxiliary machine 13) that is an auxiliary machine other than the specific auxiliary machine 11.

(Other embodiments)
In the above-described embodiment, during normal operation of the internal combustion engine, the drive pulley, the specified accessory pulley, and the endless transmission member rotate in the normal rotation direction, and the first tensioner pulley side or the second end with respect to the specified accessory pulley of the endless transmission member. In the tensioner pulley side, the first tensioner pulley is located at a position that becomes the tension side when the specific auxiliary machine is powering, and the second tensioner pulley is located at the position that becomes the loose side when the specific auxiliary machine is powering. (See FIGS. 1 and 3-6). On the other hand, in another embodiment of the present invention, during normal operation of the internal combustion engine, the drive pulley, the specified accessory pulley, and the endless transmission member rotate in the reverse rotation direction (see FIGS. 1 and 3-6), and endless transmission is performed. The second tensioner pulley is located at a position on the tension side when the specific auxiliary machine is in a power running operation on the first tensioner pulley side or the second tensioner pulley side with respect to the specific auxiliary machine pulley of the member, and the specific auxiliary machine is in a power running operation Sometimes, the first tensioner pulley may be located at a position on the loose side.

  In another embodiment of the present invention, the first tensioner pulley side or the second tensioner pulley side of the endless transmission member with respect to the specified auxiliary machine pulley is located on the tension side when the specified auxiliary machine is powered. The distance between the rotation center of the tensioner pulley or the second tensioner pulley and the axis line of the specific auxiliary machine shaft is the distance between the rotation center of the second tensioner pulley or the first tensioner pulley positioned at the loose side when the specific auxiliary machine is powered. You may set smaller than the distance with the axis line of a specific auxiliary machine axis | shaft. In this case, when power is generated by regeneratively operating the specific auxiliary machine, the rotation of the second arm or the first arm, that is, the swing of the second arm or the first arm with respect to the internal combustion engine can be reduced. That is, at this time, from the stationary position of the second tensioner pulley or the first tensioner pulley relative to the internal combustion engine to the “position at which the rotation of the drive shaft starts to be transmitted to the specific accessory (specific accessory shaft) via the endless transmission member”. The relative movement amount can be reduced. Thereby, after the power generation request | requirement of a specific auxiliary machine, the electric power generation by a specific auxiliary machine can be started at an early stage.

  Moreover, in other embodiment of this invention, as long as there is no structural obstruction factor, the above-mentioned several embodiment can be combined. For example, the second embodiment or the fifth embodiment may be combined with the fourth embodiment, and the shaft portion may be moved relative to the specific accessory shaft by the actuator.

Moreover, in other embodiment of this invention, the axial part may be provided in the position where the distance of an axis line and the axis line of a specific auxiliary machine shaft becomes more than the radius of a specific auxiliary machine pulley. Further, the shaft portion may be provided in the vicinity of the specific accessory instead of the specific accessory.
Further, in another embodiment of the present invention, the biasing means is formed of any material and in any shape as long as the first tensioner pulley and the second tensioner pulley can be biased in a direction approaching each other. May be.

In another embodiment of the present invention, any number of other auxiliary machines and auxiliary pulleys may be provided.
In another embodiment of the present invention, a metal chain or the like may be employed as the endless transmission member instead of the rubber belt.

Further, in the above-described embodiment, an example in which the transmission of the vehicle is the output destination of the rotation of the drive shaft of the internal combustion engine, that is, the drive target of the internal combustion engine is shown. On the other hand, in another embodiment of the present invention, for example, a transmission of another vehicle other than the vehicle, or another device that is driven by input of rotation may be a driving target of the internal combustion engine.
Thus, the present invention is not limited to the above-described embodiment, and can be implemented in various forms without departing from the gist thereof.

DESCRIPTION OF SYMBOLS 1 ... Transmission system 4 ... Drive pulley 5 ... Specific accessory pulley 9 ... Belt (endless transmission member)
DESCRIPTION OF SYMBOLS 10 ... Shaft part 21 ... 1st arm 22 ... 1st tensioner pulley 20 ... 1st auto tensioner 31 ... 2nd arm 32 ... 2nd tensioner pulley 30 ... 2nd Auto tensioner 40 ... biasing means

Claims (8)

A transmission system (1) for transmitting power between a specific auxiliary machine (11) capable of power running operation or regenerative operation and an internal combustion engine (2),
A drive pulley (4) attached to the drive shaft (3) of the internal combustion engine and rotatable with the drive shaft;
A specific accessory pulley (5) which is attached to a specific accessory shaft (12) which is a shaft of the specific accessory and is rotatable together with the specific accessory shaft;
An endless transmission member (9) hung around the drive pulley and the specific auxiliary pulley;
The shaft part (10) provided in the vicinity of the specific accessory or the specific accessory;
A first arm (21) having one end rotatably supported by the shaft, and
The endless transmission member can rotate while abutting on one side with respect to the specific accessory pulley, and the first arm can rotate relative to the internal combustion engine by rotating about the shaft portion. A first tensioner pulley (22) provided at the other end of one arm;
A first auto tensioner (20) capable of adjusting a tension of the endless transmission member by moving the first tensioner pulley relative to the internal combustion engine;
A second arm (31) having one end rotatably supported by the shaft, and
The endless transmission member can rotate while abutting on the other side with respect to the specific accessory pulley, and the second arm can rotate relative to the internal combustion engine by rotating about the shaft portion. A second tensioner pulley (32) provided at the other end of the two arms;
A second auto tensioner (30) capable of adjusting the tension of the endless transmission member by moving the second tensioner pulley relative to the internal combustion engine;
A biasing means (40) for biasing the first tensioner pulley and the second tensioner pulley in a direction approaching each other;
The distance (dx1) between the rotation center (c1) of the first tensioner pulley and the axis (Ax1) of the specific accessory shaft is the rotation center (c2) of the second tensioner pulley and the axis (Ax1) of the specific accessory shaft. The transmission system characterized by being different from the distance (dx2).   The first tensioner pulley positioned at a position that becomes a tension side when the specific auxiliary machine performs a power running operation on the first tensioner pulley side or the second tensioner pulley side with respect to the specific auxiliary machine pulley of the endless transmission member, or The distance between the rotation center of the second tensioner pulley and the axis (Ax1) of the specific auxiliary machine shaft is the second tensioner pulley or the first tensioner located at a position on the loose side when the specific auxiliary machine performs a power running operation. The transmission system according to claim 1, wherein the transmission system is larger than a distance between a rotation center of the pulley and an axis (Ax1) of the specific auxiliary machine shaft. The shaft portion is provided such that the axis (Ax2) is at a position different from the axis (Ax1) of the specific accessory shaft,
The first distance (d1), which is the distance between the rotation center (c1) of the first tensioner pulley and the axis (Ax2) of the shaft portion, is the axis of rotation of the second tensioner pulley (c2) and the axis of the shaft portion. The transmission system according to claim 1 or 2, wherein the transmission system is the same as the second distance (d2) which is a distance to (Ax2). The shaft portion is provided such that an axis line (Ax2) coincides with an axis line (Ax1) of the specific auxiliary machine shaft,
The first distance (d1), which is the distance between the rotation center (c1) of the first tensioner pulley and the axis (Ax2) of the shaft portion, is the axis of rotation of the second tensioner pulley (c2) and the axis of the shaft portion. The transmission system according to claim 1, wherein the transmission system is different from a second distance (d2) that is a distance from (Ax2). The shaft portion is provided such that the axis (Ax2) is at a position different from the axis (Ax1) of the specific accessory shaft,
The first distance (d1), which is the distance between the rotation center (c1) of the first tensioner pulley and the axis (Ax2) of the shaft portion, is the axis of rotation of the second tensioner pulley (c2) and the axis of the shaft portion. The transmission system according to claim 1, wherein the transmission system is different from a second distance (d2) that is a distance from (Ax2).   The shaft portion is provided at a position where a distance between an axis (Ax2) and an axis (Ax1) of the specific accessory shaft is smaller than a radius of the specific accessory pulley. The transmission system described.   The first tensioner pulley positioned at a position that becomes a tension side when the specific auxiliary machine performs a power running operation on the first tensioner pulley side or the second tensioner pulley side with respect to the specific auxiliary machine pulley of the endless transmission member, or The distance between the rotation center of the second tensioner pulley and the axis (Ax2) of the shaft portion is the second tensioner pulley or the first tensioner pulley located at a position on the loose side when the specific auxiliary machine is powered. The transmission system according to claim 5, wherein the transmission system is larger than the distance between the rotation center of the shaft and the axis (Ax2) of the shaft portion. An actuator (60) capable of moving the shaft portion relative to the specific accessory shaft;
A control unit (50) capable of controlling the operation of the actuator,
The control unit can set the position of the shaft portion with respect to the specific accessory shaft to an arbitrary position by controlling the operation of the actuator according to the operating state of the powering operation or the regenerative operation of the specific accessory. The transmission system according to any one of claims 1 to 7, wherein

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