JPS5874955A - Lubricating device for speed change gear mechanism in geared transmission system - Google Patents

Abstract

PURPOSE:To aim at reduction in the number of items of the parts required as well as simplification in the construction of a lubricating device, by constituting the device so as to cause a lubricating oil feed circuit for a train of speed change gears to be formed by assembling a geared transmission system. CONSTITUTION:In this device, an oil feed channel 36 being interconnected to an oil pump P is set up on a bevel gear case 21 while this oil feed channel 36 is open to the inside of the bevel gear case 21 and a finger-stall-like oil feed pipe 37 is inserted into the opening end of said oil feed channel. The tip part of the oil feed pipe 27 enters inside an oil supply channel 31 set up on a countershaft 3 via an oil filler hole 35 of a cap body 34 and an oil supply port 38 is set up on the tip part of said oil supply channel. Also on the way to the oil feed pipe 37, an oil supply port 39 is provided, which is opened to the bevel gear case 21 within. Like this, only when the bevel gear case 21 is attached to a transmission case M, the oil feed channel 36 is interconnected to the oil supply channel 31 and a lubricating oil feeding system for a speed change gear mechanism G is thus formed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lubricating device for a speed change gear mechanism in a gear transmission system installed in a power transmission device between a vehicle engine and drive wheels, and the present invention relates to a lubricating device for a speed change gear mechanism in a gear transmission system interposed in a power transmission device between a vehicle engine and drive wheels. A gear transmission in which an oil supply circuit for group lubrication is formed, and a part of the oil supply circuit can be formed using a countershaft of a speed change gear mechanism, thereby reducing the number of parts and simplifying the structure. The main purpose of this invention is to provide a lubricating device for a transmission gear mechanism in a system.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

A transmission case M is integrally formed with the crankcase of an engine mounted laterally on a motorcycle (in a direction in which the crankshaft 1 is perpendicular to the direction of movement of the motorcycle). An interlocked speed change gear mechanism G is installed inside. This speed change gear mechanism G includes a main shaft 2 mounted on a mission case M and interlocked with a crankshaft 1, a countershaft 3 parallel to and identical to the main shaft 2 (mounted on a mission case M, and the main It is composed of a transmission gear group 4 that interlocks and connects a shaft 2 and a countershaft 3.

The speed change gear group 4 consists of a number (1) to a (4)th change gear train, and the main shaft 2 has a number 29 on the left, a number 111 on the right, and a number 111 on the right. V
l, IV, I[, V and ■ Connection drive side gears 5 to 10
are supported on the countershaft 3, respectively (from left to right: No. 111.Vl, IV.

The driven side gears 11 to 16 of the connection (1), (2), and (2) are supported, respectively, and the drive side and driven side gears 5 to 10 and 11 to 16 are meshed with each other, and the connection gears 7. 8 and the driven side V1. The V-linked gears 12.15 are formed as shift gears, and the first to second speed gear shifting operations are performed by controlling left and right shifts of these gears. Since the speed change gear mechanism G is conventionally known, detailed explanation thereof will be omitted.

Ball bearing in mission case M 17. A driving bevel gear 19 is integrally formed at one end of the countershaft 3 which is rotatably supported via a shaft t8, and this driving bevel gear 19 projects outside the mission case M through a bearing hole 20 opened in the mission case M. It is supported in a cantilevered manner by one pole bearing 17. A bevel gear case 21 is fixed to the outer surface of the mission case M by a plurality of mounting bolts 22, 22, . . . so as to cover the bearing hole 20.

A power outlet 23 is opened in one end wall of the bevel gear case 21, and an output shaft 24 is inserted into the bevel gear case 21 through the power outlet 23. It is rotatably supported by the bevel gear case 21. One of the pawl bearings 25 is fitted and supported by the pepper cage 1 21, and the other pawl bearing 26 is fitted and supported by a bearing holder 27.
This bearing holder 2T is fitted into the power outlet 23 and fixed to the bevel gear case 21 with a plurality of mounting bolts 28. A driven bevel gear 29 is integrally formed inside the output shaft 24, and this gear 29 meshes with the driving bevel gear 19 within the bevel gear case 21, and the power of the counter shaft 3 is transmitted to the driving and driven bevel gears 19.29. The gap between the bearing holder 27 and the output shaft 24 is oil-tightly sealed by an oil seal 30.

An oil supply passage 31 is bored through the countershaft 3 over its entire length, and the drive bevel gear 1 of this oil supply passage 31
A lid 32 with a small hole 33 is fitted into the opening layer on the side facing away from the drive bevel gear 19, and a lid 34 with an oil fill hole 35 is fitted into the open end on the drive bevel gear 19 side. .

An oil feed passage 36 is bored in the bevel gear case 21 and communicated with the oil pump P. The oil feed passage 36 opens into the bevel gear case 21, and a sack-shaped oil supply pipe 37 is connected to the open end of the oil feed passage 36. The base is inserted. The oil supply pipe 3
1 faces into the oil supply passage 31 through the oil supply hole 35 of the lid body 34, and an oil supply port 38 is bored in the front end.

An oil supply port 39 is also bored in the middle of the oil supply pipe 37, and this oil supply port 39 opens into the bevel gear case 21.

Then Mission Case M and Pewerki 'r' Case 21
The oil supply pipe 37 connected to the oil supply passage 36 formed there by simply attaching the
1, and can form a lubricating oil supply system to the speed change gear mechanism G.

The countershaft 3 has a plurality of lateral oil ports 40, 40, .
are bored at intervals in the axial direction, and the lubricating oil supplied into the oil supply passage 31 is passed through the plurality of oil passage ports 40, 40 and 40.
- Lubricates the sliding parts, meshing parts, etc. of the gears of the transmission gear group 4 through the lubricant.

Next, to explain the operation of one embodiment of the present invention, when the oil pump P is now driven by the operation of the engine,
A part of the pressurized lubricating oil from the pump P is supplied to the oil supply path 31 from the oil supply port 38 of the oil supply pipe 37 through the oil supply line 36 and the oil supply pipe 37, and is further supplied from the oil supply line 31 to a plurality of oil supply lines. The drive side gear 5 of the transmission gear group 4 passes through the oil port 40, 40...
10 to the driven gears 11 to 16, and can lubricate their sliding parts.

Further, a part of the lubricating oil in the oil supply pipe 31 is supplied through another oil supply port 39 mainly toward the meshing part between the driving bevel gear 19 and the driven bevel gear 29 in the bevel gear case 21, so as to make the meshing part effective. Can be lubricated.

As is clear from the above embodiments, according to the present invention, the countershaft of the speed change gear mechanism has an oil supply passage along its axial direction, and a plurality of lateral oil passages that communicate this oil supply passage with the outside. On the other hand, the bevel gear case that is attached to the transmission case has an oil supply path that communicates with the oil pump. Since a lubrication pipe that can be communicated with the oil supply passage is connected to the transmission case, a lubrication circuit for lubricating the transmission gear mechanism can be formed by simply attaching the bevel gear case to the transmission case. Sufficient lubricating oil can be supplied to sliding parts, meshing parts, etc. to ensure smooth and light operation of the mechanism.

In addition, since a part of the oil supply circuit can be formed using the countershaft of the speed change gear mechanism, the number of parts can be reduced and the structure can be improved.
The structure can be simplified and costs can be reduced.

Furthermore, since the oil supply passage of the Pepel gear case and the oil supply passage of the countershaft are connected in the gear case where lubricating oil is present, a sealing device between them is also unnecessary.

[Brief explanation of the drawing]

Figure 1 is a side view of a motorcycle equipped with the device of the present invention;
The figure is a cross-sectional enlarged plan view taken along the line ■-■ in FIG. 1.

Claims (1)

[Claims] Inside the mission case (&), a main shaft (2) and a counter shaft (2) are mounted on the case (Jf).
3) and a transmission gear group (4) that interlocks and connects these shafts (2, s) M, a transmission gear mechanism (G) is installed inside, and a transmission case CM is installed at two ends of the counter shaft (3). >A driving bevel gear (19) protruding outward is integrally provided, and a driven bevel gear (29) connected to the output shaft (24) is meshed with this driving bevel gear (151), and the driving and driven bevel gears (19, 29) Bevel gear case (to which the mission case (#) K is attached)
21), the countershaft (3) is provided with an oil supply passage (31) extending along the seven axial directions, and a plurality of lateral oil passages communicating the oil supply passage (31) with the outside. (40°40...), and on the other hand, the bevel gear case (21) is formed with an oil feed passage (36) that communicates with the oil pump CP)K, and this oil feed passage (36) is connected to the bevel gear case ( 21) At the inner port end, the oil supply path (31) K is installed by attaching it to the bevel gear case (21→, mission case CM,).
A lubricating device for a speed change gear mechanism in a gear transmission system, which is formed by connecting a lubrication pipe (31) that can be communicated.