JPH05332156A - Auxiliary drive device - Google Patents

Abstract

PURPOSE:To provide an auxiliary drive device which can be combined with an engine without exerting any limitation on an auxiliary arrangement space on the side of anti-transmission of the engine. CONSTITUTION:An auxiliary drive device 57 is provided with a drive pulley 17 provided on a rotor 7 driven in rotation by an engine 1 between the engine 1 and a transmission 3, a driven pulley 21 which transmits rotational force to the side of an auxiliary device 25, and a no-end body 19 which connects these pulleys together.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary machine drive device used in a vehicle.

[0002]

2. Description of the Related Art Japanese Unexamined Utility Model Publication No. Hei 1-148031 discloses a drawing of an engine 201 as seen from the side opposite to the transmission side as shown in FIG. As shown in this figure, the anti-transmission side of the engine 201 is driven via a crankshaft 203. Belt type continuously variable transmission 207 for driving supercharger 205 and belt transmission mechanism 209, belt transmission mechanism 213 for driving alternator 211, belt transmission mechanism 21 for driving exhaust side cam shafts 215, 217.
9, the idler pulleys 223 and 225 and the tensioner pulleys 227 and 229 for the timing belt 221.
Are arranged.

[0003]

As described above, the anti-transmission side of the engine 201 is overcrowded due to a large number of accessories, pulleys, belts, etc., and the layout of these is a very difficult problem. There is.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an auxiliary machine drive device that can be assembled in an engine without burdening the auxiliary machine arrangement space on the transmission side.

[0005]

An accessory drive system of the present invention transmits a rotational force to a drive pulley provided on a rotating body which is rotationally driven by an engine between an engine and a transmission, and an accessory side. It is characterized by including a driven pulley and an endless body that connects these.

[0006]

The accessory drive system of the present invention applies the drive force of the engine from the drive pulley provided on the rotating body (flywheel for MT vehicles, drive plate for AT vehicles) that is rotationally driven between the engine and the transmission. I am taking it out. In this way, by utilizing the space on the transmission side, which was not used in the past, for disposing the auxiliary machinery, the space for disposing the auxiliary machinery on the entire engine is widened, and the burden on the space for disposing the conventional anti-transmission side is reduced accordingly. ..

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment will be described with reference to FIGS. This embodiment is an example applied to an MT (manual transmission) vehicle. It should be noted that members and the like not given reference numerals are not shown. As shown in FIG. 1, the engine 1 and the transmission 3
A clutch 5 and a flywheel 7 (rotating body) are arranged between them. The flywheel 7 is fixed to the crankshaft 9 with bolts 11. The clutch 5 is housed in a clutch housing 15 that connects the engine 1 and the transmission case 13.

As shown enlarged in FIG. 2, a drive pulley 17 is integrally formed on the engine 1 side of the flywheel 7, and a belt 19 is formed on the drive pulley 17.
(Endless body) is attached. The belt 19 is pulled out from the opening of the clutch housing 15 and mounted on a driven pulley 21 to connect the pulleys 17 and 21. Thus, the belt transmission mechanism 23 is configured, and the driving force of the engine 1 is taken out via the flywheel 7 side.

A centrifugal air compressor type supercharger 25 (auxiliary machine) is assembled to the clutch housing 15 through a casing 27, and as shown in FIG.
A belt-type continuously variable transmission 29 is arranged between 3 and the supercharger 25.

The belt type continuously variable transmission 29 includes a speed change pulley 31 on the driving side and a speed change pulley 33 on the driven side.
These speed change pulleys 31, 33 are provided with movable flanges 35, 37 and fixed flanges 39, 41, respectively, and are connected to each other by a belt 43 mounted between them. The driven pulley 21 of the belt transmission mechanism 23 is attached to the fixed flange 39 of the speed change pulley 31 with a bolt 45. The speed change pulley 31 is rotatably supported on a support shaft 47, and the support shaft 47 is fixed to a casing 27 of the supercharger 25 with bolts 49. The speed change pulley 33 is connected to the input shaft 51 on the supercharger 25 side.

In the transmission pulley 31, the movable flange 35 is pressed toward the fixed flange 39 by the spring 53, and the belt 4 is moved.
3 is tensioned. A centrifugal cam 55 is formed on the speed change pulley 33. When the rotational speed of the engine 1 increases, the cam thrust force of the centrifugal cam 55 pushes the movable flange 37 toward the fixed flange 41 side to increase the pulley pitch diameter of the speed change pulley 33, and the belt tension decreases the pulley pitch diameter of the speed change pulley 31. The speed increasing ratio of the belt type continuously variable transmission 29 decreases. Further, when the rotation speed of the engine 1 decreases, the cam thrust force of the centrifugal cam 55 decreases, and the force of the spring 53 increases the speed increasing ratio.

As described above, the driving force of the engine 1 transmitted from the belt transmission mechanism 23 to the belt type continuously variable transmission 29 is changed to a substantially constant rotation speed within the normal rotation speed range of the engine 1 and the supercharger 25. Transmitted to the side. In this embodiment, the belt drive mechanism 23 and the belt type continuously variable transmission 29 constitute an accessory drive device 57.

As shown in FIG. 1, an auxiliary machine is installed in an arrangement space 59 shown by a broken line on the side opposite to the transmission side of the engine 1.
Pulleys, belts, etc. are arranged, and these are rotationally driven by the engine 1 via a crank pulley 61 connected to the crankshaft 9. As described above, since the driving force of the engine is taken out from the flywheel 7 via the belt transmission mechanism 23, the space for arranging the accessories of the engine 1 as a whole becomes wider, and the load of the space for disposing the anti-transmission side is reduced. Reduce. Further, since the belt 19 can be replaced when the clutch 5 is maintained, the maintainability is good.

The drive pulley may be separate from the flywheel and may be fixed to the flywheel. Also, A
In a T (automatic) vehicle, a drive plate (rotating body) fixed to the pump impeller of the torque converter is provided with a drive pulley. The drive pulley provided on the rotating body may be a speed change pulley. Further, unlike the above-described embodiment, the driven pulley may be directly connected to the auxiliary device instead of the belt type continuously variable transmission.

[0015]

According to the accessory drive system of the present invention, the drive pulley is provided in the rotating body which is driven to rotate by the engine between the engine and the transmission, so that the space on the transmission side, which has not been conventionally used, is supplemented. It can be used as a machine layout space, and the auxiliary machine layout space for the entire engine has expanded.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment.

FIG. 2 is an enlarged view of a main part of FIG.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a front view of a conventional example.

[Explanation of symbols]

 1 Engine 3 Transmission 7 Flywheel (Rotating Body) 17 Drive Pulley 19 Belt (Endless Body) 21 Driven Pulley 25 Supercharger (Auxiliary Machine) 57 Auxiliary Machine Drive Unit

Claims (1)

[Claims] 1. A drive pulley provided on a rotating body which is rotationally driven by the engine between an engine and a transmission, a driven pulley which transmits a rotational force to an auxiliary machine side, and an endless body which connects these. An accessory drive device characterized by the above.