JPH055320Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is mainly used for in-shaft lubrication, which is used to introduce oil from the shaft end into the lubrication shaft hole formed in the shaft in the transmission case. Regarding oil guide plate.

(Prior Art) Conventionally, according to Japanese Patent Application Laid-Open No. 61-92361, an oil guide plate consisting of a flange-shaped plate body with a pipe protruding from the plate body is installed in an oil reservoir formed on the inner surface of an end wall of a transmission case. It is known that the pipe is inserted into the shaft hole of the shaft to be oiled and oil is introduced into the shaft hole. A ring-shaped seal member is provided in the shaft hole, and the pipe is fitted into the ring-shaped seal member.

(Problems to be solved by the invention) In the above method, the number of parts increases due to the provision of the sealing member, and it is necessary to form a step in the shaft hole to hold the sealing member in the shaft hole. The processing becomes troublesome, and the oil flowing out from the tip of the pipe tends to flow along the tip of the pipe and wrap around the outer circumferential surface.
There were problems such as oil not flowing smoothly from the tip of the pipe to the wall of the shaft hole.

An object of the present invention is to provide an oil guide plate that solves these problems.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an oil guide plate in which a flange-shaped plate body is provided with a protruding pipe to be inserted into the shaft hole of the oiled shaft. A feature of the pipe is that the cross-sectional shape of the distal end of the pipe is formed into a sharp lip shape that extends forward in a radial direction.

(Function) Since the tip of the pipe has a sharp lip shape that slopes outward in the radial direction, oil flowing out from the tip of the pipe flows smoothly to the wall of the shaft hole without going around the outer circumferential surface of the pipe. Therefore, almost no oil leakage occurs through the outer circumferential gap of the pipe.

(Example) Referring to FIG. 1, 1 is a mission case;
Reference numerals 2 and 3 indicate an input shaft and an output shaft that are pivotally supported within the case 1. A shaft hole 2a is formed in the input shaft 2, and a shaft hole 2a is formed in the input shaft 2 to accommodate the shaft support of the gear 4 and the clutch hub 4' that are pivotally supported on the input shaft 2. Lubricating oil is supplied to the supporting portion of the shaft through the shaft hole 2a.

In the drawing, 5 indicates an oil reservoir recessed in the inner wall surface of the end wall of the transmission case 1 facing the input shaft 2;
An oil guide plate 6 is fitted into the oil reservoir 5 at a flange-like plate body 7 at the tail end thereof,
A pipe 8 protruding from the center of the main body 7 is inserted into the shaft hole 2a through an opening at the shaft end of the input shaft 2, and oil is supplied to the oil reservoir 5 by an appropriate means through the pipe 8. and introduced into the shaft hole 2a.

The oil guide plate 6 is made of resin, for example, and has a cross-sectional shape at the tip 8a of the pipe 8 in a sharp lip shape that extends radially outward toward the tip. Diameter to shaft hole 2
It was made approximately equal to the inner diameter of a. In this case, the outer diameter of the intermediate portion of the pipe 8 is made smaller than the inner diameter of the shaft hole 2a to prevent wear due to contact with the shaft hole wall.

Further, in the illustrated embodiment, radial ribs 9 are provided protruding from the plate main body 7 as shown in the second figure to increase the rigidity of the oil guide plate 6.

According to the above configuration, as explained in the above operation section, oil flows smoothly from the sharp tip edge of the lip-shaped tip 8a of the pipe 8 to the shaft hole wall, and from the tip edge to the outer periphery of the pipe 8. This prevents oil from going around, and almost no oil leaks from the shaft hole 2a through the outer circumferential gap of the pipe 8.

The oil guide plate 6 can also be made of an elastic material such as steel or rubber, or a combination thereof. In this case, the lip-shaped tip 8a of the pipe 8 is made of an elastic material to form the shaft hole. By making it inscribed in 2a, the oil seal effect can be further improved.

(Effects of the invention) As described above, according to the invention, oil flows smoothly from the tip of the pipe to the wall of the shaft hole, preventing oil from going around the outer circumference of the pipe, and preventing oil leakage without providing a separate sealing member. It is possible to reliably supply oil into the shaft hole without causing oil leakage, and there is no need for stepped processing of the sealing member or the shaft hole for the sealing member, which has the effect of reducing costs.

[Brief explanation of the drawing]

FIG. 1 is a cutaway side view of the main part of a mission case equipped with the plate of the present invention, and FIG. 2 is a front view of the plate. 2...Input shaft (lubricated shaft), 2a...Shaft hole, 6
...Oil guide plate, 7...Plate body, 8...Pipe, 8a...Pipe tip.

Claims (1)

[Scope of utility model registration request] In an oil guide plate comprising a flange-shaped plate body with a pipe protrudingly inserted into a shaft hole of an oiled shaft, the cross-sectional shape of the tip of the pipe is inclined radially outward toward the tip. An oil guide plate for in-shaft lubrication that is characterized by being formed into an extending, sharp lip shape.