JPH04103236U - Engine auxiliary drive device - Google Patents

Abstract

(57) [Summary] [Configuration] An input shaft 21 rotationally driven by the rotating shaft 7 of the engine, a plurality of output shafts 26 arranged around the input shaft 21,
28 and rows of gears 22, 24, 25, . 31... is attached to the gear case 10. [Effect] The auxiliary machines 31... can be centrally arranged in the optimum empty space of the engine, no separate dedicated brackets are required, and the power transmission mechanism and the auxiliary machines 31... can be assembled into an assembly using the gear case 10. Machines 31... can also be assembled, and therefore assembly man-hours and maintenance work can be simplified.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention enables multiple devices such as ACG and water pumps that are rotationally driven by the engine. This invention relates to a gear-type drive device for auxiliary equipment.

0002

[Conventional technology]

ACG and water are connected to the engine crankshaft via a separate belt pulley device. The technology for driving each auxiliary machine such as a pump is described in Japanese Utility Model Application Publication No. 57-182227. It is well known that the gear train is connected from the intermediate shaft for driving the overhead cam of the engine. The technology of driving a water pump through It is publicly known.

0003

[Problem that the idea aims to solve]

In this way, in the engine, as disclosed in the above-mentioned Utility Model Application Publication No. 59-35637, A technique that drives a water pump from an intermediate shaft for driving an overhead cam via a gear train. There are techniques, but in order to drive the ACG and other auxiliary equipment, the Individual belt pulley that transmits rotational driving force from the crankshaft as disclosed in Publication No. 27 Conventionally, it was common to provide a device. However, depending on the wrapping angle of the belt to the pulley, the pulley ratio, and the driving force, the auxiliary equipment There are restrictions on the arrangement of the Increased weight and auxiliary equipment by installing individual brackets to support the engine There are various problems in the design and assembly process, such as vibration countermeasures due to overhang support. there were.

0004 Therefore, the purpose of this invention is to centrally place auxiliary equipment in the optimal empty space of the engine. The power transmission mechanism and auxiliary equipment support members can be attached without the need for separate dedicated brackets. can be assembled, and auxiliary equipment can also be assembled, simplifying assembly man-hours. Our goal is to provide an auxiliary drive device that can simplify maintenance work. .

[0005]

[Means to solve the problem]

In order to solve the above-mentioned problems, this invention has developed a system that uses multiple auxiliary machines that are rotationally driven by the engine. In the drive device for the engine, an input shaft rotationally driven by the rotation shaft of the engine. and output shafts arranged around this input shaft, the number of which corresponds to the number of auxiliary machines, and the number of output shafts that correspond to the number of auxiliary machines. A gear that transmits rotation from the input shaft to the output shaft with an appropriate gear ratio, respectively. When the gear train is stored in a gear case and this gear case is fixed to the engine, In both cases, each of the auxiliary machines is connected to the output shaft, and the auxiliary machine is connected to the gear case. It is characterized by being attached. Further, the present invention transmits rotation from at least one of the output shafts to another auxiliary machine. Another feature is that another auxiliary drive mechanism is further provided.

[0006]

[Effect]

Incorporate the input shaft, gear train, and multiple output shafts into a gear case and connect to each output shaft. Since multiple auxiliary machines are attached to the gear case, the auxiliary machines can be placed in the optimum space for the engine. It can be placed centrally in a space, eliminating the need for separate dedicated brackets and allowing it to be mounted on the gear case. It is possible to assemble the power transmission mechanism and auxiliary equipment support members, and the auxiliary equipment can also be assembled. It can be made into yellowtail. Therefore, assembly man-hours can be simplified and maintenance work can be easily performed. It is also possible to transmit power from at least one of the output shafts to other auxiliary machines.

[0007]

【Example】

Embodiments of the present invention will be described below based on the drawings. In FIG. 1 showing a schematic configuration of an engine to which the present invention is applied, 1 is an engine main body. , 2 is a transmission case, 3 is a crankshaft, 4 is a connecting rod, 5 is a piston, 6 is the timing belt device, 7 is the overhead camshaft, 8 is the oil pump, 10 is the The gear case 31 for driving auxiliary equipment according to the present invention is an ACG, and in the embodiment, a cam The shaft 7 is used as a rotating shaft for transmitting driving force from the engine to the auxiliary equipment. As shown in FIGS. 2 to 4, the gear case 10 includes a pair of case halves 11 and 15. The gear case 10 includes one input shaft 21 and five gears 22. , 24, 25, 27, 29, one intermediate shaft 23, and two output shafts 26, 28. is stored.

[0008] That is, the input shaft 21 is provided with a large-diameter gear 22, and the intermediate shaft 23 is provided with two large and small gears 2. 4, 25 are provided, and each output shaft 26, 28 is connected to a small diameter gear 27, 29. One each is provided. The large diameter gear 22 of the input shaft 21 is the small diameter gear of the intermediate shaft 23. 24, and the large diameter gear 25 of the intermediate shaft 23 meshes with the small diameter gear 27 of one output shaft 26. The small diameter gear 24 of the intermediate shaft 23 meshes with the small diameter gear 29 of the other output shaft 28. match. The input shaft 21, intermediate shaft 23, and both output shafts 26, 28 are connected to respective bearings as shown in the figure. The input shaft is supported in the gear case 10 through a 21 is formed with a boss hole 12 for protruding, and the other case half 15 has a boss hole 12 for protruding. Boss holes 16 and 18 for protruding the output shafts 26 and 28 are formed. The gear case 10 is constructed by connecting both case halves 11 and 15 with bolts. The half body 11 is bolted to the end face of the engine body 1, and the input shaft 21 is connected to the engine body 1 by bolts. It is spline-fitted to the end face of the arm shaft 7.

[0009] The output shaft 26 protruding from the boss hole 16 of the other case half 15 is connected to the auxiliary equipment. The drive shaft 32 of the ACG 31 is spline-fitted to the boss hole 18. An impeller 42 of a water pump 41, which is another auxiliary machine, is attached to the output shaft 28 protruding from the can be installed. The above ACG 31 and water pump 41 are both cases of the gear case 10. It is bolted to the half body 15 and is mounted and supported. Furthermore, an air compressor 51, which is another auxiliary machine, is arranged on the side of the gear case 10. The air compressor 51 is bolted to a suitable location on the engine body 1, etc. Mounted and supported. The pulley 52 provided on this air compressor 51 and the A belt 54 is hung around a pulley 53 provided on the ACG drive output shaft 26.

0010 In the above, one output shaft 2 is connected to the input shaft 21 which rotates integrally with the camshaft 7. Gear rows 22, 24, 25, and 27 up to 6 are matched to the optimum rotation speed range of ACG31. It is configured with a high gear ratio, and from the input shaft 21 to the other output shaft 28. The gear rows 22, 24, and 29 are adjusted to the optimum rotational speed range of the water pump 41. It is configured with a gear ratio. Furthermore, the pulley 52 from the ACG drive output shaft 26 , 53 also has a pulley ratio that matches the optimum rotational speed range of the air compressor 51. It is configured.

[0011] According to the auxiliary drive device with the above configuration, the input that rotates integrally with the camshaft 7 From the shaft 21 to the ACG drive output shaft 26 and the water pump drive output shaft 28 The power transmission mechanism is composed of gears 22, 24, 25, 27, and 29, and these Attach and support the ACG 31 and water pump 41 to the gear case 10 to be stored. Because of this configuration, the ACG is installed in the empty space above the engine's mission case 2. 31, water pump 41, and air compressor 51 are also concentrated and optimally arranged. be able to. And, eliminating the conventional individual dedicated bracket, the gear case 10 allows AC In addition to the dual use of support members for G31 and water pump 41, the power transmission mechanism thereof can be assembled. In addition, the ACG 31 and water pump 41 are assembled into the gear case 10. can do. Therefore, assembly man-hours can be simplified, and bolts can be removed even during maintenance work. This can be easily done by simply attaching and detaching.

0012 In addition to the examples, rotation is transmitted from the crankshaft to the input shaft via a belt pulley device. Each output shaft for the power steering pump and air compressor also has a gear case. It is also possible to configure it so that it can be stored in. Also regarding the type of auxiliary equipment used is not limited to the above.

[0013]

[Effect of the idea]

As described above, according to the present invention, there is an input shaft and a plurality of output shafts arranged around the input shaft. and a gear case containing a gear train with an appropriate gear ratio for each auxiliary machine. Multiple auxiliary machines connected to each output shaft are fixed to the gear case and fixed to the gear case. As a result, auxiliary equipment can be concentrated in the optimal empty space of the engine, and The power transmission mechanism and auxiliary equipment can be connected to the gear case, eliminating the need for separate dedicated brackets. Support members can be assembled, and auxiliary equipment can also be assembled. Therefore, assembly man-hours and maintenance work can be simplified. Wear. Further, as claimed in claim 2, power is transmitted from at least one of the output shafts to other auxiliary equipment. It can also be configured.

[Brief explanation of drawings]

[Fig. 1] A side view showing a schematic configuration of an engine to which the present invention is applied, with main parts broken away.

[Fig. 2] Enlarged vertical cross-sectional view of the gear case portion according to the present invention

[Figure 3] Exploded perspective view of the internal mechanism of the gear case, etc.

[Figure 4] Schematic front view showing the configuration of the gear train

[Explanation of symbols]

7... Rotating shaft, 10... Gear case, 21... Input shaft, 22,
24, 25, 27, 29...gear, 23...intermediate shaft, 26,
28... Output shaft, 31, 41, 51... Auxiliary equipment, 52, 53...
Pulley, 54...belt.

Claims (2)

[Scope of utility model registration request] 1. A drive device for a plurality of auxiliary machines rotatably driven by an engine, including an input shaft rotatably driven by the rotary shaft of the engine, and an input shaft disposed around the input shaft and configured to drive a plurality of auxiliary machines according to the auxiliary machines. A number of output shafts and a gear train for transmitting rotation from the input shaft to the output shaft with a gear ratio appropriate for each of the auxiliary machines are housed in a gear case,
An auxiliary equipment drive device for an engine, characterized in that the gear case is fixed to the engine, the auxiliary equipment is connected to the output shaft, and the auxiliary equipment is attached to the gear case. 2. The accessory drive device according to claim 1, further comprising another accessory drive mechanism that transmits rotation from at least one of the output shafts to another accessory.