JPS6314133Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a lubricating device for a manual transmission installed in a vehicle such as an automobile. More specifically, the present invention relates to a lubricating device for an oil seal provided between an input shaft of a manual transmission and a bearing retainer disposed around the input shaft.

[Prior art]

1 and 2 show a conventional manual transmission lubrication system of this type.

In these figures, 1 indicates the input shaft of a manual transmission, 2 indicates the transmission case, 3 indicates the bearing retainer, and 4 indicates the oil seal. It is disposed as a member for transmitting rotational power from the manual transmission (not shown) to the manual transmission, and is rotatably supported by the transmission case 2 by a bearing 5, as shown in FIG.

The bearing 3 is located in the front part (first part) of the transmission case 2.
It is attached to the input shaft 1 (on the left side in the figure) with bolts (not shown), and is arranged around the input shaft 1. An oil seal 4 is installed between the bearing retainer 3 and the input shaft 1 to prevent lubricating oil in the manual transmission from leaking toward the clutch device.

The oil seal 4 is attached to the bearing retainer 3 by being press-fitted, and a lip portion 4a is formed on the inner circumference of the oil seal 4.
It is designed to make sliding contact with. Since it is necessary to form an oil film on the lip portion 4a of the oil seal 4 that makes sliding contact for lubrication, a lubricating oil chamber A is formed on the right side of the oil seal 4 as seen in FIG. .

FIG. 2 is a side view of the bearing retainer 3 shown in FIG. 1 viewed from the right. As shown in FIG. is provided. The supply port 6 is provided above the input shaft 1, and is located above the input shaft 1.
It is located diagonally to the upper left as seen in the figure. This supply port 6 communicates with the inside of the transmission case 2, so that the lubricating oil stirred within the transmission is guided thereto. The discharge port 7 is provided at a lower position of the input shaft 1, and this discharge port 7 serves as a supply port for a lubricating oil chamber B formed in the subshaft 8.

In the conventional structure described above, lubricating oil flows from the supply port 6, accumulates in the lubricating oil chamber A, and exits from the discharge port 7.
The lip portion of the oil seal 4 is lubricated by the lubricating oil stored in the lubricating oil chamber A. That is, in the lubricating oil chamber A, lubricating oil is normally stored up to the axial center of the input shaft 1, and this stored lubricating oil is applied to the input shaft 1 and rotates, causing the oil seal 4
An oil film is formed on the lip portion 4a.

However, since the oil film on the lip portion 4a of the oil seal 4 is formed against the rotational centrifugal force of the input shaft 1, the supply of lubricating oil is insufficient and is accumulated in the lubricating oil chamber A. When the input shaft 1 is not filled with lubricating oil, the lubricating oil cannot be effectively applied to the input shaft 1, resulting in an inconvenience that the oil seal 4 is insufficiently lubricated.

Note that the position of the lubricating oil supply port 6 is set depending on various conditions of the manual transmission, and is difficult to change.

[Purpose of invention]

The present invention has been made in view of the above-mentioned conventional points, and its purpose is to:
The purpose is to ensure that the oil seal is lubricated by directly applying the lubricating oil from the supply port onto the input shaft.

[Structure of the idea]

To achieve this purpose, in the manual transmission lubrication system of the present invention, unlike the conventional general manual transmission lubrication system described above, the guide part that guides the lubricating oil from the lubricating oil supply port is attached to the bearing. The guide is provided in the retainer, and the inside of the guide is formed so that lubricating oil can fall onto the front portion of the input shaft in the rotational direction.

[Effect of invention]

With the above configuration, the lubricating oil is guided by the guide part from the lubricating oil supply port and falls onto the front portion of the input shaft in the rotational direction, and as a result of this falling, the lubricating oil is directly applied to the input shaft.
As the input shaft rotates, an oil film forms on the lip of the oil seal, providing lubrication.

[Effect of idea]

In the present invention, as described above, the lubricating oil is applied directly to the input shaft by falling, so the oil seal can be reliably lubricated even in situations where the lubricating oil supply is insufficient in the conventional structure. It can be done.

Furthermore, in the present invention, since the lubricating oil falls onto the input shaft at the front part in the rotational direction of the input shaft, the lubricating oil is reliably applied to the input shaft.
As a result, the oil seal can be more effectively lubricated.

In addition, the present invention applies lubricating oil directly to the input shaft to lubricate it.
It is no longer necessary to store lubricating oil in the lubricating oil chamber up to the axial center of the input shaft as in the conventional case, and as a result, it is also possible to reduce the amount of lubricating oil in the manual transmission.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 3 shows an embodiment of the present invention.

This FIG. 3 is illustrated in comparison with FIG. 2 of the conventional structure described above.

In this embodiment, the same or corresponding parts as those in the conventional structure described above are denoted by the same reference numerals, and detailed explanation thereof will be omitted.

In FIG. 3, a lubricating oil guide section 10 is provided horizontally from the lubricating oil supply port 6. The guide portion 10 is integrally formed with the bearing retainer 3, and its end portion 10a is positioned above the front portion of the input shaft 1 in the rotational direction.
Here, the arrow X indicates the direction of rotation of the input shaft 1.

With the above configuration, the lubricating oil supplied to the lubricating oil supply port 6 is transferred to the guide portion 10.
It is guided in the direction of the arrow shown in FIG. 3 and falls from the end 10a to the front portion of the input shaft 1 in the rotation direction. As the lubricating oil falls, the lubricating oil is applied to the input shaft 1, and as the input shaft 1 rotates, an oil film is formed on the lip portion 4a of the oil seal 4, thereby performing lubrication.

In this way, since the lubricating oil falls directly onto the input shaft 1 and is applied, the oil seal 4
lubrication is ensured.

Although the present invention has been described above with reference to specific embodiments illustrated, the present invention is not limited to these embodiments, and various other embodiments are possible within the scope of the present invention.

For example, in the embodiment described above, the lubricating oil is
0, but the guide part 10 is formed to be long to the right as seen in FIG.
A hole may be provided at a position corresponding to the end portion 10a in FIG. 3, and the lubricating oil may fall through the hole 10a.

[Brief explanation of drawings]

Figures 1 and 2 show a conventional manual transmission lubrication system, with Figure 1 being a front sectional view and Figure 2 being a
FIG. 3 is a side view of the bearing retainer portion seen from the right side in the figure, and FIG. 3 is a side view showing an embodiment of the present invention illustrated in contrast to FIG. 2. Explanation of symbols, 1... Input shaft, 3...
...Bearing retainer, 4...Oil seal, 6
... Supply port, 7 ... Discharge port, 10 ... Guide section, A
...Lubricating oil room.

Claims (1)

[Claim for Utility Model Registration] An oil seal is provided between an input shaft of a manual transmission and a bearing retainer disposed around the input shaft, and is press-fitted and fixed to the bearing retainer. A lubricating oil chamber is formed on one side, and a lubricating oil supply port to this lubricating oil chamber is provided above the input shaft, and a discharge port is provided below the input shaft. In a manual transmission lubricating device that lubricates an oil seal while lubricating oil flows to an outlet, a guide portion for guiding lubricating oil from the lubricating oil supply port is provided in the bearing retainer, and this guide portion A lubricating device for a manual transmission, characterized in that the lubricating oil is formed so that lubricating oil falls onto the front portion of the input shaft in the rotational direction.