JPH08151931A - Auxiliary machine drive device - Google Patents

Abstract

PURPOSE: To increase the damping effect of a damper and also reduce an operation cost by driving an auxiliary machine by the power of an auxiliary power source through a first pulley, a damper and a second pulley and arranging the auxiliary power source and the auxiliary machine between a commonly used pulley and the output shaft of a transmission. CONSTITUTION: This auxiliary machine drive device 1 is composed of a transmission 5 including a planetary gear mechanism 55 and a transmission passage clutch 63, etc., output pulleys 7, 9, a damper 11, etc., and an engine power is transmitted to the input shaft 23 of a transmission 5 through speed up gear group 3 consisting of a large diameter gear 15 and a small diameter gear 13. An output pulley 7 is fixed on the output shaft 33 of the transmission 5 and this output pulley 7 is connected to a pulley in a motor (auxiliary power source) side through a belt. The output pulley 9 connected to this output pulley 7 through the damper 11 including rubber (elastic body) 43 and a member for fixing 45 and supported by the output shaft 33 is connected to the pulley in the auxiliary machine side through the belt.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle accessory drive system.

[0002]

2. Description of the Related Art An auxiliary machine drive device 201 as shown in FIG. This accessory drive device 201 is a refrigeration compressor 203, 20
5 drive, the driving force of the engine is flyhole 207, transmission gear set 209, belt type continuously variable transmission 21.
1, the pulley 213, the belts 215 and 217, and the compressor side pulleys 219 and 221 to be transmitted to the refrigeration compressors 203 and 205.

For example, in a refrigerated vehicle, the refrigeration compressors 203, 20 are used to maintain the temperature inside the refrigerator even when the engine is stopped.
5, it is necessary to drive the auxiliary machine while the engine (main power source) is stopped.
There is an accessory drive device configured such that the accessory can be driven by an auxiliary power source such as a motor via the drive unit 3. In this case, the auxiliary power source is connected to the auxiliary machine from the pulley 213 via the belt.

Further, FIG. 4 is disclosed in Japanese Patent Laid-Open No. 64-35143.
Such a dynamic damper 223 is described.
The dynamic damper 223 is used for the rotary shaft 2 on the engine side.
The elastic body 231 and the damper mass 233 are mounted on the pulley 227 connected to the 25 through the bearing 229. By mounting the elastic body 231 and the damper mass 233 through the bearing 229, the vibration damping effect is obtained. Is limited to the bending of the rotating shaft 225 and the thrust direction, and vibration is not damped in the rotating direction.

In addition to these, there is an accessory drive device in which an output shaft on the main power source side is connected to a pulley via a damper, and this pulley is shared by the accessory and the auxiliary power source.

[0006]

However, in the accessory drive device for driving the accessory with the auxiliary power source as described with reference to FIG. 3, since the accessory and the auxiliary power source share the pulley,
Since the load fluctuation of the auxiliary machine is directly input to the auxiliary power source, it is necessary to increase the capacity of the auxiliary power source in order to prevent the influence of the load fluctuation, which increases the cost, weight and size of the auxiliary power source.

Further, even if an auxiliary machine driving device is constructed by using the dynamic damper 223 of FIG. 4, since there is no vibration damping effect in the rotating direction, as long as the auxiliary machine and the auxiliary power source share the pulley 227, the auxiliary machine is a secondary machine. The power source will be greatly affected by the load fluctuation of the auxiliary equipment, and the capacity of the auxiliary power source must be increased.

Further, even in the case of the conventional example in which the output shaft of the main power source side and the pulley are connected via a damper, as in the example of FIG. 4, as long as the pulley is shared by the auxiliary machine and the auxiliary power source, The power source is greatly affected by the load fluctuation of the auxiliary equipment.

Therefore, an object of the present invention is to provide an auxiliary machine drive device in which the auxiliary power source is free from the influence of load fluctuations of the auxiliary machine.

[0010]

SUMMARY OF THE INVENTION An accessory drive system of a first invention is a first pulley connected to an auxiliary power source side via a belt and a second pulley connected to an accessory side via a belt. And a damper that coaxially connects these pulleys,
Alternatively, it is characterized by including a speed change mechanism arranged between the second pulley and the main power source, and an on-off clutch that disconnects the auxiliary power source and the main power source when the auxiliary power source is activated.

An accessory drive system according to a second aspect of the present invention is the accessory drive system according to claim 1, wherein the first pulley is connected to the main power source via a speed change mechanism.

In the accessory drive system of the third invention, the speed change mechanism is
When the first gear on the main power source side, the second gear connected to the second pulley side, the third gear locked to the casing side via the shift clutch, and the third gear when locked It is a planetary gear type speed change mechanism having a transmission path clutch that allows relative rotation between gears, and the auxiliary machine drive device according to claim 1 or 2, wherein the intermittent clutch is the transmission path clutch.

In the accessory drive system according to the fourth aspect of the invention, the damper has a fixing member attached to one pulley via an elastic body,
The accessory drive device according to claim 1, 2 or 3, comprising a bolt for fixing the flange portion of the other pulley to the fixing member.

[0014]

In the accessory drive system of the first invention, the auxiliary power source drives the accessory via the first pulley, the damper and the second pulley. When the auxiliary power source is activated, the on / off clutch disconnects the auxiliary power source from the main power source.

As described above, since the first pulley on the auxiliary power source side and the second pulley on the auxiliary device side are connected via the damper,
The influence of load fluctuation of the auxiliary machine on the auxiliary power source is reduced by this damper. Furthermore, the mass of each pulley becomes a damper mass of each other via the damper, and the damping effect of the damper is enhanced. In this way, the load fluctuation of the auxiliary machine transmitted to the auxiliary power source is effectively reduced by the damper.

Therefore, the auxiliary power source is released from fluctuations in the load of the auxiliary machine, the auxiliary machine can be smoothly driven with a minimum capacity, and the cost, weight, size, etc. associated with the large capacity of the auxiliary power source can be increased. The increase can be avoided.

Further, if a conventional damper, which is arranged between the pulley shared by the auxiliary power source and the auxiliary machine and the output shaft on the main power source side, is used for connecting the pulleys, the implementation cost is greatly reduced. it can.

In the accessory drive system of the second aspect of the invention, since the second pulley on the accessory side is connected to the main power source via the damper and the first pulley, the damper mass has the original damping effect. As the mass damper effect of the first pulley is added,
Load fluctuations between the auxiliary machine and the main power source are reduced particularly effectively.

In the accessory drive system of the third aspect of the invention, the driving force of the main power source is changed in speed when the third gear is locked and is transmitted to the accessory, and the transmission path is transmitted when the third gear is unlocked. It is transmitted to the auxiliary machine at a constant speed through the clutch. The driving force of the auxiliary power source is cut off from the main power source side by a transmission path clutch such as a one-way clutch.

As described above, since the transmission path clutch also serves as the on-off clutch, the cost can be reduced accordingly. or,
Similar to the first and second inventions, the first pulley on the auxiliary power source side and the second pulley on the auxiliary device side are connected via the damper, and the auxiliary power source is released from load fluctuation of the auxiliary device. Auxiliary machinery can be smoothly driven with a minimum capacity, and increase in cost, weight, size, etc. due to the large capacity of the auxiliary power source can be avoided.

Further, if the conventional damper is used for connecting the pulleys, the implementation cost can be greatly reduced.

In the accessory drive system according to the fourth aspect of the invention, a fixing member is attached to one pulley via an elastic body such as rubber, and the flange portion of the other pulley is fixed to this fixing member with a bolt. It constitutes a damper.

According to this structure, the conventional damper arranged between the pulley shared by the auxiliary power source and the auxiliary machine and the output shaft side of the speed change mechanism can be directly used for connecting both pulleys. The cost can be reduced significantly.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. This embodiment has the features of the second, third and fourth inventions. 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 drive system 1 of this embodiment and a speed increasing gear set 3 on the input side. The accessory drive device 1 is
Planetary gear type speed change mechanism 5, output pulleys 7, 9,
It is composed of a damper 11 and the like.

The speed-increasing gear set 3 is composed of large-diameter and small-diameter gears 13 and 15 meshing with each other. Large diameter gear 1
3 is supported by a support shaft 19 fixed to the casing 17 of the speed increasing gear set 3 via bearings 21 and 21, and is connected to the engine (main power source) side via a crankshaft side gear. The small-diameter gear 15 is spline-connected to the input shaft 23 of the speed change mechanism 5 and fixed by a nut 25. The input shaft 23 is supported inside the casing 31 of the speed change mechanism 5 by bearings 27 and 29.

The driving force of the engine is increased by the speed increasing gear set 3 to rotate the input shaft 23.

The output shaft 33 of the speed change mechanism 5 has a left end portion penetrating to the outside of the casing 31, and the output pulley 7 (first pulley) is spline-connected to the output shaft 33 to form a washer 35 and a nut 37. It is fixed at. The output pulley 7 is connected to a pulley on the motor (auxiliary power source) side via a belt. Also, the output pulley 9 (second pulley)
Is the boss 4 of the casing 31 via the bearing 39.
1 is supported on the outer circumference and is connected to a pulley on the accessory side via a belt.

As shown in FIG. 1, the damper 11 is made of rubber 43.
(Elastic body), flange fixing plate 45 (fixing member), and bolt 47. As shown in FIG. 2, the rubber 43 is filled in the groove 49 of the pulley 9, and the flange fixing plate 45 is embedded in the rubber 43. The flange fixing plate 45 has four circumferentially equidistant intervals.
An individual screw seat 51 is provided, and the bolt 47 is screwed to the screw seat 51 to fix the flange portion 53 of the pulley 7 to the fixing plate 45. Thus, the pulley 7,
9 is directly coaxially connected via a damper 11.

As shown in FIG. 1, the transmission mechanism 5 includes a planetary gear mechanism 55, a multiple disc clutch 57 (shift clutch), a hydraulic actuator 59 for intermittently operating the multiple disc clutch 57, a disc spring 61, and a one-way clutch 63 ( A transmission path clutch), a trochoidal type oil pump 65, and the like.

The planetary gear mechanism 55 is composed of a pinion gear 67 (first gear), a sun gear 69 (second gear), an internal gear 71 (third gear) and the like.
The pinion shaft 73 supporting the pinion gear 67 is supported at both ends by the left and right pinion carriers 75 and 77. The pinion carriers 75 and 77 are connected to each other via a connecting portion 79, and the right pinion carrier 77 is integrated with the input shaft 23 by welding. The sun gear 69 is formed on the output shaft 33.

The output shaft 33 is supported inside the casing 31 via a bearing 81, and is supported in the recess 85 of the input shaft 23 via a bearing 83.

An oil reservoir is formed inside the casing 31. A seal 87 is arranged between the casing 31 and the output shaft 33, and the casing 31 and the small-diameter gear 1 are arranged.
A seal 89 is disposed between the casing 31 and the casing 5 to prevent oil leakage from the casing 31.

The one-way clutch 63 has the input shaft 23.
(Pinion gear 67 side) and output shaft 33 (sun gear 69)
It is located between the side).

The internal gear 71 is welded to the inner circumference of the hub 91, and the hub 91 is supported on the outer circumference of the input shaft 23 via a bearing 93. Further, washers 95 and 97 are arranged on the left and right of the hub 91 to reduce the frictional resistance between the hub 91 and the right pinion carrier 77 and the casing 31.

The multi-plate clutch 57 is arranged between the outer circumference of the hub 91 and the inner circumference of the casing 31. A pressure receiving ring 99 and a retaining ring 101 are attached to the casing 31 and receive the fastening force of the multi-plate clutch 57. A cylinder 103 is formed in the casing 31, and the piston 105 and the seals 107 and 109 constitute a hydraulic actuator 59. The disc spring 61 is arranged between the piston 105 and the casing 31, and biases the piston 105 toward the open side of the multi-plate clutch 57.

The oil pump 65 is arranged between the casing 31 and the output shaft 33, and pumps oil from the oil sump of the casing 31 through the oil passage 111, and the oil passage 113 of the output shaft 33 and the input shaft 23. Through the oil passage 115 of the planetary gear mechanism 55, the multi-plate clutch 57,
Oil is given to the bearings 27, 29, 81, 83, 93, the one-way clutch 63, etc. to lubricate them.

The oil pressure of the oil pump 65 is the oil passage 117.
Sent to the control valve. This control valve is opened and closed by the controller to supply hydraulic pressure to the hydraulic actuator 59 via the oil passage 119.

When the hydraulic pressure is applied to the hydraulic actuator 59, the multi-plate clutch 57 is pressed and engaged by the piston 105, and the internal gear 71 is connected and locked to the casing 31. Further, when the hydraulic pressure supply to the hydraulic actuator 59 is stopped, the piston 105 retracts due to the biasing force of the disc spring 61, and the engagement of the multi-plate clutch 57 and the locking of the internal gear 71 are released.

When the internal gear 71 is locked,
The driving force of the engine input to the input shaft 23 is increased from the pinion gear 67 via the sun gear 69, and is transmitted from the output shaft 33 to the auxiliary machine side via the pulley 7, the damper 11 and the pulley 9. At this time, the one-way clutch 63 permits the preceding rotation of the output shaft 33 with respect to the input shaft 23.

When the internal gear 71 is unlocked, the free rotation of the internal gear 71 causes the pinion gear 67 to try to rotate ahead of the sun gear 69, but the one-way clutch 63 does not allow the preceding rotation in this direction. Therefore, the driving force of the engine is transmitted to the accessory side through the one-way clutch 63 at a constant speed.

When the auxiliary machine is driven while the engine is stopped, the motor is operated. The driving force of the motor is the pulley 7,
The accessory is rotated via the damper 11 and the pulley 9. At this time, the output shaft 33 also rotates, but this rotation is interrupted by the one-way clutch 63, so the motor is disconnected from the heavy load on the engine side. When the engine drives the auxiliary machinery, the motor is also driven to rotate, but the rotation resistance of the motor is small and the engine is not heavily loaded.

Thus, the accessory drive device 1 is constructed.

As described above, in the accessory drive system 1, the pulley 7 on the motor side and the pulley 9 on the accessory side are connected via the damper 11, so that the load fluctuation of the accessory is due to the original vibration damping of the damper 11. While being reduced by the effect, the vibration damping effect is enhanced by the mass of the pulley 7 acting as a damper mass.

Thus, the load fluctuation of the engine applied to the auxiliary machine is reduced by the damper 11 having the damping effect enhanced by the damper mass, and the damage of the auxiliary machine is prevented.

Further, the load fluctuation of the auxiliary machine applied to the motor is effectively reduced by the original damping effect of the damper 11 and the mass damper effect of the pulley 9. In this way, the motor is released from the load fluctuation of the auxiliary machine, and the auxiliary machine can be driven smoothly with the minimum capacity. Therefore, it is not necessary to increase the capacity of the motor in anticipation of the load fluctuation of the auxiliary machine. The increase in cost, weight, size, etc., which accompanies commercialization, can be avoided.

The damper 11 is a conventional damper arranged between the pulley shared by the auxiliary power source and the auxiliary machine and the output shaft of the speed change mechanism. The damper 11 is used for connecting the pulleys 7 and 9. Therefore, the implementation cost is extremely low.

The structure of the damper 11 in which the flange portion 53 of the pulley 7 is fixed to the flange fixing plate 45 mounted on the pulley 9 via the rubber 43 with the bolt 47 is convenient for connecting the pulleys 7 and 9. Good.

Since the damper 11 is a rubber damper using rubber as an elastic body, it has a simple structure and is inexpensive, and the characteristics can be changed by using different rubbers.

Further, since the one-way clutch 63 also serves as an intermittent clutch that disconnects the engine side when the motor operates, the cost is correspondingly low.

In the first aspect of the invention, the second pulley on the auxiliary machine side may be connected to the output shaft side of the transmission. In this case, the load fluctuation between the auxiliary machine and the main power source is caused by the first pulley. It is reduced by the mass damper effect.

The speed change mechanism is not limited to the planetary gear type as in the third aspect of the invention, but a belt type continuously variable transmission may be used, for example. In this case, when the auxiliary machine is driven by the auxiliary power source, the main power source side is disengaged by the on-off clutch.

The main power source is not limited to the internal combustion engine. For example, in an electric vehicle, it becomes a running motor. Further, the auxiliary power source is not limited to the motor, and may be, for example, an internal combustion engine for driving an auxiliary machine.

[0054]

In the accessory drive system of each invention, the auxiliary power source drives the accessory via the first pulley, the damper, and the second pulley. In this way, the first pulley on the auxiliary power source side and the second pulley on the auxiliary device side are connected via the damper,
Since the mass of each pulley becomes a damper mass of each other via the damper to enhance the damping effect of the damper, the load fluctuation of the auxiliary machine transmitted to the auxiliary power source is effectively reduced by the damper.

Therefore, the auxiliary power source is released from the load fluctuation of the auxiliary machine, the auxiliary machine can be driven smoothly with the minimum capacity, and the increase in cost, weight, size and the like due to the large capacity of the auxiliary power source is avoided. To be

Further, if the conventional damper, which is arranged between the pulley shared by the auxiliary power source and the auxiliary machine and the output shaft of the transmission mechanism, is used for connecting the pulleys, the implementation cost can be greatly reduced. .

In the accessory drive system of the second aspect of the invention, the second pulley on the accessory side is connected to the main power source via the damper and the first pulley. Load fluctuations are reduced particularly effectively.

In the accessory drive system according to the third aspect of the present invention, a planetary gear type speed change mechanism is used for the speed change device, and the transmission path clutch also functions as an on-off clutch, so that the cost is lower.

In the accessory drive system of the fourth aspect of the invention, the damper is constructed by fixing the flange of the other pulley to the fixing member mounted on one pulley via the elastic body with a bolt. According to the above, according to the conventional damper arranged between the pulley shared by the auxiliary power source and the auxiliary machine and the output shaft side of the speed change mechanism, both pulleys can be easily connected, so that the implementation cost is significantly reduced. It

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment.

2 is a view taken in the direction of arrow B in FIG. 1 with a part taken along the line AA.

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

FIG. 4 is a sectional view of another conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Auxiliary equipment drive device 5 Planetary gear type speed change mechanism 7 First pulley 9 Second pulley 11 Damper 31 Casing 43 Rubber (elastic body) 45 Flange fixing plate (fixing member) 47 Bolt 53 Flange portion 57 Multi-plate Clutch (shift clutch) 63 One-way clutch (transmission clutch: intermittent clutch) 67 Pinion gear (first gear) 69 Sun gear (second gear) 71 Internal gear (third gear)

─────────────────────────────────────────────────── ───Continued from the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location F16H 3/44 Z 8609-3J

Claims (4)

[Claims] 1. A first pulley connected to the auxiliary power source side via a belt, a second pulley connected to the auxiliary equipment side via a belt, and a damper for connecting these pulleys coaxially. , A transmission mechanism arranged between the first or second pulley and the main power source, and an on-off clutch for disconnecting the auxiliary power source and the main power source when the auxiliary power source operates. Auxiliary equipment drive. 2. The accessory drive system according to claim 1, wherein the first pulley is connected to the main power source via a speed change mechanism. 3. The transmission mechanism includes a first gear on the main power source side,
A second gear connected to the second pulley side, a third gear that is locked to the casing side via a shift clutch, and a transmission path that allows relative rotation between the gears when the third gear is locked. A planetary gear type speed change mechanism having a clutch, wherein the intermittent clutch is the transmission path clutch. 4. The damper comprises a fixing member mounted on one pulley via an elastic body, and a bolt for fixing a flange portion of the other pulley to the fixing member.
Or the auxiliary device drive device of 3.