JPS6146182Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an array structure of a generator and a starting motor for a multi-cylinder engine for a motorcycle.

Due to the structure of motorcycles, space for mounting the engine is limited. Therefore, in the case of multi-cylinder engines, the placement of the charging generator (hereinafter simply referred to as the generator) and the starting motor, etc. attached to the engine must be carefully selected. It is essential to take this into consideration and make it as compact as possible. Therefore, it has been proposed that a generator is placed on a shaft separate from the engine crankshaft and driven by a chain or the like.

Conventional multi-cylinder engines for motorcycles are
As shown in the figure, the crankcase 1 of the engine 1
A generator 3 and a starting motor 4 are arranged parallel to the crankshaft 1a at the rear of the upper part of the main body of b and at a position opposite to the deceleration drive unit 2, and a gear 5 fixed to the crankshaft 1a and a generator shaft 3a are fixedly mounted. At the same time, a one-way clutch 8 fixed to the generator shaft 3a and a gear 9 fixed to the starting motor shaft 4a are meshed and connected by an idle gear 10. When starting, the driving force of the starting motor 4 is transmitted to the crankshaft 1a via the idle gear 10, one-way clutch 8, gear 6, chain 7, and gear 5,
The crankshaft 1a is driven to drive the generator 3 via a chain 7 and gears 6 during operation.

However, in the above conventional arrangement structure, since the generator and starter motor shafts are not arranged on the same axis, each case for the generator, idle gear, starter motor, etc. must be formed separately. However, there were disadvantages such as an increase in the number of parts, an increase in processing and assembly man-hours, a decrease in productivity, and an increase in weight.

The present invention was made with the aim of eliminating the above-mentioned drawbacks of the conventional technology, and in addition to arranging the generator and the starting motor (hereinafter simply referred to as the motor) on the same axis, the generator, idle gear, etc. are housed in the crankcase. To provide a multi-cylinder engine for a motorcycle which is integrated with the above, reduces the number of parts, and is made compact.

An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 3 shows a cross section of the arrangement of the generator and starting motor of the multi-cylinder engine for a motorcycle according to the present invention. 22, a motor mounting frame 23 is formed on the other side wall 21b, and an idle gear storage case 24 is integrally formed in parallel with the motor mounting frame 23. 25 is formed. Holes 25 are formed in alignment on the same straight line at positions corresponding to the axial center positions of these frames 25 and 23 and the above-mentioned axial center positions of the wall portion 21b of the chain storage case 21.
a, 23a and a hole 21c are bored. The diameters of these holes 25a, 21c, and 23a are in the order of 25a≧21c≧23a, as shown in FIG. Further, a plurality of screw holes 22a and 25b are formed in each end face of the case 22 and the frame 25 along the axial direction and at predetermined intervals in the circumferential direction.

The bearing frame 30 has a substantially cylindrical shape, and a flange 30a is formed at one open end. This bearing frame 3
0 is the hole 2 of the frame 25 via the seal member 31
5a, and the flange 30a is attached to the frame 25 by a screw 32 that is screwed into the screw hole 25b.
Fixed. One side of the shaft 40 is the seal member 3
3 and a bearing 34 in a hole 30b of a bearing frame 30, and the other side is supported in a hole 21c in a wall 21b through a bearing 35. A screw hole 40a and a hole 40b are provided at the axial center positions of both ends of this shaft 40, respectively, and the bottom of the hole 40b communicates with the approximate center of the outer circumference through a hole 40c drilled in the radial direction. .

A gear 41 is fitted approximately in the center of the shaft 40 so as to be locked and fixed in the rotating direction of the shaft 40 by spline connection, and the shaft 40 is fitted at a predetermined tooth bottom position.
A hole 41a is bored to face and communicate with the hole 40c. Further, a substantially disk-shaped support plate 41d is integrally formed at one end of the gear 41. This gear 41 is engaged with a gear fixed to a crankshaft (not shown) via a chain 7 indicated by a chain line.

A one-way clutch 45 is fitted on the shaft 40 adjacent to the gear 41, and the driven member 46 is connected to the pin 42.
The drive member 47 is fixed to the support plate 41d of the gear 41 via a bearing 43, and the drive member 47 is pivotally supported by the shaft 40 via a bearing 43. The drive member 47 is a gear. As shown in FIG. 5, this one-way clutch 45 has a substantially trapezoidal groove 46a formed inside a driven member 46, and a roller 4 loosely fitted in this groove 46a.
8 and the shaft portion 4 of the drive member 47 facing the groove 46a.
When the driving member 47 rotates counterclockwise (in the direction of arrow A) with respect to the driven part 46 by cooperation with the outer peripheral surface of 7b, the driven member 46 is locked and fixed to the driving member 47. , rotates together with this drive member 47. Conversely, when the driving member 47 rotates clockwise (in the direction of arrow A'), the driven member 4
6 and the driving member 47 is released, and the driven member 46 does not rotate. In other words, when the driven member 46, ie, the shaft 40, rotates counterclockwise, the driving member 47 does not rotate.

A rotor 51 of a generator 50 is attached to the end of the shaft 40, and is firmly fixed by a set screw 52 that is screwed into the screw hole 40a. Further, a stator 53 is fitted into the case 22, and a case 54 is attached and fixed to the case 22 by a set screw 55 that is screwed into the screw hole 22a.

The boss 60a of the output shaft 61 of the motor 60 is connected to the hole 23 of the motor mounting frame 23 through the seal 70.
The leg portion 60b is fixed to the crankcase 1b with a screw 71. In this state, the shaft 61 of the motor 60 and the shaft 40 are located on the same straight line (coaxially). axis 61
A gear 62 is attached and fixed to the holder by spline connection. Furthermore, an idle gear 65 is stored in the idle gear storage case 24, and this idle gear 65 is inserted into the shaft hole 2 drilled in the case 24.
It is rotatably supported by a shaft 66 that fits into the shafts 4a and 24b. This idle gear 65 is integrally formed with two gears 65a and 65b, one gear 65a meshing with the gear 62, and the other gear 65b meshing with the drive member 47 of the one-way clutch 45, respectively. That is, the gear 62 of the motor 60 and the drive member 47 of the one-way clutch 45 are engaged through an idle gear 66.

Furthermore, the bulge 26 formed between the wall 21b of the chain storage case 21 and the frame 23 has a screw hole 26a communicating with the hole 23a of the frame 23.
A flow path 2 is provided in this screw hole 26a.
A fluid coupling 27 having 7a is screwed and fixed. This joint 27 is connected to an oil pump (not shown) via a pipe 28. The oil discharged from the oil pump flows into the hole 23a of the frame 23 and the case 24 through the pipe 28, the flow path 27a, and the screw hole 26a.
It is supplied to rotating parts or meshing parts such as the gear 62 and the idle gear 65. Further, the oil flowing into the hole 23a of the frame 23 flows into the hole 40b of the shaft 40,
40c, flows into the chain storage case 21 through the hole 41a of the gear 41, and the chain 7 and the bearing 3
5. It is supplied to various parts such as the one-way clutch 45.
It is also supplied to the bearing 43 through the holes 40b and 40d. The oil supplied to each of these parts eventually flows into the crankcase 20 which is connected to the chain storage case 21, and returns to the oil pump again.

In this configuration, when starting the engine 1 (FIG. 1), the starting motor 60 is driven, and when the motor 60 rotates counterclockwise when viewed from the case 60c side, the idle gear 65 rotates clockwise. The drive member 47 of the one-way clutch 45 rotates counterclockwise. As mentioned above, when the drive member 47 rotates counterclockwise, the one-way clutch 45
The driven member 46 is locked and fixed thereto, that is,
The shafts 40 rotate in the same direction, driving and rotating a crankshaft (not shown) counterclockwise to start the engine.

When the motor 60 is stopped after starting the engine, the shaft 40 is continuously rotated counterclockwise by the crankshaft, and the driven member 46 of the one-way clutch 45 is also rotated in the same direction. At this time, as described above, the locking relationship between the driving member 47 of the one-way clutch 45 and the driven member 46 is released, and only the driven member 46 rotates together with the shaft 40. The driving member 47, the idle gear 65, and the starting motor 60
is held in a stopped state. Further, a generator 50 directly connected to the shaft 40 rotates together with the shaft 40 and outputs electric power according to the rotation speed.

As explained above, according to the present invention, by arranging the generator and the starting motor on the same axis, the frame to which they are attached can be formed integrally with the crankcase, and the Finishing of the case can be done in one step, improving productivity. Furthermore, a generator,
Since the idle gear and the like can be housed in one piece, the number of parts is reduced, which has the advantage of reducing cost and weight, as well as making the engine more compact.

[Brief explanation of drawings]

Fig. 1 is a plan view illustrating the main parts of a conventional multi-cylinder engine for a motorcycle, Fig. 2 is a side view of the engine shown in Fig. 1, and Fig. 3 is a generator in a multi-cylinder engine for a motorcycle according to the present invention. FIG. 4 is an explanatory cross-sectional view showing the size of each hole in the crankcase shown in FIG. 3, and FIG. FIG. 3 is an explanatory diagram of main parts of a direction clutch. 1... Engine, 7... Chain, 20... Crank case, 22, 24... Case, 23, 2
5... Frame, 40... Shaft, 45... One-way clutch, 50... Generator, 60... Starting motor,
65...Idle gear.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a multi-cylinder motorcycle engine of the type in which a generator and a starter motor are arranged above the crankcase in parallel with the crankshaft, there is a hole in the crankcase for pivotally supporting the shaft of the generator. , for a motorcycle, characterized in that a hole into which a boss of an output shaft of a starting motor is fitted is formed on the same axis, and the generator and the starting motor are disposed facing each other on the same axis. multi-cylinder engine. 2. A multi-purpose motor for a motorcycle according to claim 1, characterized in that the shaft of the generator and the output shaft of the starter motor are engaged with each other via an idle gear and a one-way clutch. cylinder engine.