JP3067546B2 - Auxiliary drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary device driving device for transmitting the driving force of a main power source and a sub power source to auxiliary devices.

[0002]

2. Description of the Related Art Japanese Unexamined Utility Model Publication No. 5-10026 discloses an accessory driving device 201 as shown in FIG. The auxiliary device driving device 201 is provided with refrigeration compressors 203, 20 of a cold storage vehicle.
The driving force of the engine is transmitted through the flyhole 207, the belt-type continuously variable transmission 209, and the belt transmission mechanisms 211 and 213.
205.

[0003] In a refrigerating car, the refrigeration compressors 203 and 2 are used to maintain the temperature inside the refrigerator even when the engine is stopped.
There is an auxiliary equipment driving device that drives the auxiliary equipment by an auxiliary power source such as a motor while the engine (main power source) is stopped.

FIG. 4 shows such an accessory driving device 215. In the accessory drive device 215, the engine 21
7 is transmitted through the belt transmission mechanism 219, the one-way clutch 221 and the belt transmission mechanism 227 to the auxiliary machine 223.
Is transmitted to The driving force of the motor 225 is transmitted to the accessory 223 via the belt transmission mechanisms 229 and 227.
One-way clutch 221 allows rotation of accessory 223 and motor 225 while engine 217 is stopped.

[0005]

SUMMARY OF THE INVENTION Belt transmission mechanism 21
The oil pump 231 for lubricating the 9, 227, 229 and the one-way clutch 221 is generally disposed between the engine 217, which is a main transmission path of the driving force, and the one-way clutch 221 as shown in FIG. Therefore, the motor 22
5, when the accessory 223 is driven, the driving force of the motor 225 is cut off by the one-way clutch 221 so that the oil pump 231 does not rotate, and the one-way clutch 221 and the belt transmission mechanisms 227 and 229 have poor lubrication and burn-in. Or damage may occur.

Accordingly, an object of the present invention is to provide an accessory driving device in which an oil pump is driven even when an accessory is driven by a sub power source.

[0007]

According to the first aspect of the present invention, there is provided an auxiliary device driving apparatus comprising: an input side transmission path connecting a main power source and a transmission path clutch; and an output side transmission path connecting a transmission path clutch to an auxiliary machine. A driving power transmission path, an auxiliary power source for driving an auxiliary machine via the output side transmission path, and an oil pump disposed on the output side transmission path and supplying oil to each lubricating point and a necessary point. It is characterized by the following.

According to a second aspect of the present invention, there is provided the auxiliary device driving device according to the first aspect, wherein a transmission mechanism is disposed on the input side transmission path.

An auxiliary device driving device according to a third aspect of the present invention includes a first gear to which the driving force of the engine is input, a second gear on the auxiliary device side, and a third gear locked to the casing via a speed change clutch. A planetary gear having a transmission path clutch that permits relative rotation between the gears when the third gear is locked, and a hydraulic actuator that opens and closes the speed change clutch, wherein the speed change clutch is intermittently shifted by two steps. A gear-type transmission mechanism, a sub-power source for driving the auxiliary machine via an output-side transmission path for driving force connecting the transmission path clutch to the auxiliary machine, and the hydraulic actuator disposed on the output-side transmission path and An oil pump for supplying oil to the lubrication points is provided.

[0010]

In the accessory drive device of each invention, since the oil pump is arranged on the output side transmission path connecting the transmission path clutch and the auxiliary machine, the oil pump is driven even when the auxiliary machine is driven by the auxiliary power source. The oil pump is also driven via the transmission path clutch when the auxiliary machine is driven by the main power source. Therefore, the oil pump is always driven when necessary, and it is possible to sufficiently lubricate each lubricating point of the driving force transmission path, and to use this oil pressure at other necessary points.

A third aspect of the present invention is a configuration in which this hydraulic pressure is used for driving a hydraulic actuator that operates a shift clutch.

In the second and third aspects of the present invention, if the speed change mechanism is a speed increasing mechanism, the speed of the oil pump is increased, and the size and the capacity of the oil pump can be reduced accordingly.

[0013]

1 and 2, an embodiment of the present invention will be described. The left and right directions are the left and right directions in FIG. 1, and members and the like without reference numerals are not shown.

FIG. 1 shows an accessory driving device 1 of this embodiment,
The input side speed increasing gear set 3 and the output pulley 5 are shown.

The speed increasing gear set 3 is composed of large-diameter and small-diameter gears 7 and 9 meshed with each other. The large-diameter gear 7 is supported by bearings 15, 15 on a support shaft 13 fixed to a casing 11 of the speed increasing gear set 3, and is connected to an engine (main power source) side via a crankshaft-side gear. ing. The small-diameter gear 9 is spline-connected to the input shaft 17 of the accessory driving device 1 and is fixed by a nut 19. The input shaft 17 is supported inside the casing 25 of the accessory driving device 1 by bearings 21 and 23.

The driving force of the engine is increased by the speed increasing gear set 3 to rotate the input shaft 17.

The output pulley 5 is supported on the outer periphery of the boss 29 of the casing 25 via a bearing 27, and its belt groove 31 has a compressor (auxiliary machine) via a belt.
The belt groove 33 is connected to a pulley on the motor (sub-power source) side via a belt.

The accessory driving device 1 includes a planetary gear type transmission mechanism 35, a multi-plate clutch 37 (a transmission clutch),
Hydraulic actuator 3 for intermittently operating multi-plate clutch 37
9, a disc spring 41, a one-way clutch 43 (transmission path clutch), a trochoid type oil pump 45, and the like.

The transmission mechanism 35 includes a pinion gear 47 (first
Gears), a sun gear 49 (second gear), an internal gear 51 (third gear), and the like. The pinion shaft 53 supporting the pinion gear 47 is supported at both ends by left and right pinion carriers 55 and 57. The pinion carriers 55 and 57 are connected to each other via a connecting portion 59, and the right pinion carrier 57 is connected to the input shaft 1 by welding.
7 are integrated. The sun gear 49 is formed on the output shaft 61.

The left end of the output shaft 61 passes through the boss 29 of the casing 25 to the outside. The output shaft 61 is supported inside the casing 25 via a bearing 63, and is supported on the inner periphery of the input shaft 17 via a bearing 65.

An oil reservoir is formed inside the casing 25. A seal 67 is arranged between the casing 25 and the output shaft 61, and the casing 25 and the small-diameter gear 9
A seal 69 is disposed between the casing and the input shaft 17 to prevent oil from leaking from the casing 25.

The output shaft 61 is connected to the output pulley 5 via a connecting member 71. The connecting member 71 includes a hub 75 having a flange portion 73 and a washer 77 welded to the hub 75. The hub 75 is spline-connected to the output shaft 61 and is prevented from falling off by a bolt 79.
The flange portion 73 is connected to the output pulley 5 via a damper 83 by a bolt 81.

The one-way clutch 43 is connected to the input shaft 17.
(Pinion gear 47) and the output shaft 61 (sun gear 49).

The internal gear 51 is welded to the inner periphery of the hub 85, and the hub 85 is supported on the outer periphery of the input shaft 17 via a bearing 87. Washers 89 and 91 are disposed on the left and right sides of the hub 85 to reduce the frictional resistance between the hub 85 and the right pinion carrier 57 and the casing 25.

The multi-plate clutch 37 is disposed between the outer periphery of the hub 85 and the inner periphery of the casing 25. A pressure receiving ring 93 and a retaining ring 95 are mounted on the casing 25 and receive the fastening force of the multi-plate clutch 37. Further, a cylinder 97 is formed in the casing 25, and a piston 99
And the seals 101 and 103 constitute a hydraulic actuator 39. The disc spring 41 is disposed between the piston 99 and the casing 25 and urges the piston 99 toward the open side of the multi-plate clutch 37.

The oil pump 45 is disposed between the casing 25 and the output shaft 61. This oil pump 4
5 pumps oil from an oil reservoir of the casing 25 via an oil passage 105, and from the oil passage 107 via oil passages 109 and 111 of the output shaft 61, the speed change mechanism 35, the multi-plate clutch 37, the bearings 63 and 65, the one-way Clutch 43
And lubricating the oil passage 11 and the oil passage 11 of the input shaft 17.
3. Lubricate the bearings 21, 23, 87, etc. by applying oil.

The oil pressure of the oil pump 45 is
From the control valve 117. The control valve 117 is opened and closed by a controller, and supplies a hydraulic pressure to a cylinder 97 of the hydraulic actuator 39 via an oil passage 119.

When hydraulic pressure is applied to the hydraulic actuator 39, the multi-plate clutch 37 is pressed by the piston 99 to be engaged, and the internal gear 51 is connected to the casing 25 and locked. When the supply of hydraulic pressure to the hydraulic actuator 39 is stopped, the piston 99 is retracted by the urging force of the disc spring 41, and the engagement of the multi-plate clutch 37 and the lock of the internal gear 51 are released.

When the internal gear 51 is locked,
The driving force of the engine input to the input shaft 17 is increased from the pinion gear 47 via the sun gear 49 and transmitted from the output shaft 61 to the compressor. At this time, the preceding rotation of the output shaft 61 with respect to the input shaft 17 is performed by the one-way clutch 43.
Allowed by.

When the lock of the internal gear 51 is released, the free rotation of the internal gear 51 causes the pinion gear 47 to rotate ahead of the sun gear 49, but the one-way clutch 43 does not allow the preceding rotation in this direction. Therefore, the driving force of the engine is transmitted to the compressor via the one-way clutch 43 at a constant speed.

FIG. 2 is a shift characteristic graph 121 of the shift mechanism 35 controlled by the controller as described above. As shown in the graph 121, the speed change mechanism 35 is in a speed-up state in the low-speed rotation range of the engine, and is in a deceleration (constant speed) state when the engine speed is higher than this. As described above, the fluctuation of the rotation speed of the compressor is suppressed to be small in a wide rotation speed range of the engine.

When it is necessary to drive the compressor while the engine is stopped, such as when the vehicle is stopped, the compressor is driven via the output pulley 5 by the motor.
The rotation at this time is permitted by the one-way clutch 43, and the oil pump 45 is driven via the output shaft 61. Therefore, the bearings 21, 23, which rotate or slide with the rotation of the compressor even when the engine is stopped,
Oil is given to the clutch plates 63, 87, the clutch plates of the multi-plate clutch 37, the one-way clutch 43, etc., so that they are sufficiently lubricated.

Thus, the accessory drive device 1 is configured.

In the accessory drive device 1, the drive power input side transmission path extends from the engine to the one-way clutch 43 via the speed increasing gear set 3, the input shaft 17, and the transmission mechanism 35, and from the one-way clutch 43 to the output shaft. An output-side transmission path of the driving force extends to the compressor via the output pulley 61 and the output pulley 5, and these input / output-side transmission paths constitute a driving force transmission path.

As described above, in the accessory drive device 1, the oil pump 45 is disposed on the compressor side (output side transmission path) of the one-way clutch 43, so that the oil pump 45 is driven even when the compressor is driven by the motor. ,
Oil pump 45 even when the compressor is driven by the engine
Are driven via a one-way clutch 43. As described above, unlike the conventional example, the oil pump 45 is always driven when necessary, and can sufficiently lubricate each lubrication point.
This hydraulic pressure can be used at other necessary places (the hydraulic actuator 39).

Further, since the oil pump 45 is disposed on the speed increasing side of the transmission mechanism 35, the oil pump 45 can be made smaller and smaller in capacity by the speed increase.

In this case, the oil pump 45 and the control valve 11
7 and the multi-plate clutch 37
May be configured to store an amount of pressurized oil necessary to fasten the oil. In this way, the hydraulic pressure for shifting (for engaging the multi-plate clutch 37) required in a constant speed state (the oil pressure of the oil pump 45 is low) as in the transmission mechanism 35 is supplied, and the capacity of the oil pump 45 is assisted. Can be done.

In place of the control valve 117, an ON-OF
An F valve and a relief valve may be used. In this case, ON-
If the OFF valve is opened and the relief valve is closed, the multi-plate clutch 37
Is closed, the ON-OFF valve is closed, the relief valve is opened, and oil is released to release the multi-plate clutch 37.

The transmission mechanism may be arranged on the input side transmission path (the structure of the second invention), or may not be arranged (the structure of the first invention).

The transmission path clutch is not limited to the one-way clutch. For example, an electromagnetic clutch or a meshing clutch may be opened and closed by a controller. The speed change clutch may be another type of friction clutch or a dog clutch.

[0041]

In the accessory drive device of each invention, the oil pump is disposed on the output side transmission path connecting the transmission path clutch and the auxiliary equipment, so that the oil pump is driven even when the auxiliary equipment is driven by the auxiliary power source. The oil pump is also driven via the transmission path clutch when the auxiliary power is driven by the main power source. Therefore, the oil pump is always driven when necessary, and it is possible to sufficiently lubricate each lubricating point of the driving force transmission path, and to utilize this oil pressure at the necessary point (hydraulic actuator) as in the third invention. Can be done.

In the second and third aspects of the present invention, if the speed change mechanism is a speed increasing mechanism, the speed of the oil pump is increased, so that the size and the capacity can be reduced accordingly.

[Brief description of the drawings]

FIG. 1 is a sectional view showing one embodiment of the present invention.

FIG. 2 is a graph showing shift characteristics of the embodiment of FIG.

FIG. 3 is a sectional view of a conventional example.

FIG. 4 is a configuration diagram of another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Auxiliary equipment drive device 25 Casing 35 Planetary gear type transmission mechanism 37 Multi-plate clutch (transmission clutch) 39 Hydraulic actuator 43 One-way clutch (transmission path clutch) 45 Oil pump 47 Pinion gear (first gear) 49 Sun gear (second gear) ) 51 Internal gear (3rd gear)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F02B 67/04 F02B 63/06 F16H 3/44 F16H 57/04

Claims (3)

(57) [Claims] A driving force transmission path comprising an input side transmission path connecting the main power source and the transmission path clutch, and an output side transmission path connecting the transmission path clutch to the auxiliary machine, and the output side transmission path. An auxiliary power source for driving auxiliary equipment, and an oil pump disposed on the output side transmission path and supplying oil to each lubricating point and necessary parts. 2. The auxiliary device driving device according to claim 1, wherein a speed change mechanism is disposed on the input side transmission path. 3. A first gear to which the driving force of the engine is input, a second gear on the auxiliary machine side, a third gear locked on the casing side via a shift clutch, and the third gear locked. A transmission path clutch that allows relative rotation between gears at the time, a hydraulic actuator that opens and closes a shift clutch, and a planetary gear type speed change mechanism that performs two-stage shifting by intermittently switching the shift clutch; Auxiliary power source for driving the auxiliary machine via an output side transmission path for driving force connecting the road clutch to the auxiliary machine, and supplying oil to the hydraulic actuator and each lubricating point disposed on the output side transmission path. An accessory drive device comprising an oil pump.