JPS6024892Y2 - Baffle plate mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for mounting a baffle plate to an oil pan of an automobile engine, and particularly to a structure for mounting a baffle plate using a drain plug on the bottom of the oil pan.

Conventionally, an oil pan A is provided below the engine as shown in FIG. 1, and lubricating oil is supplied from the oil pan to the cylinder block B by an oil pump. When the vehicle starts suddenly, brakes suddenly, goes up or down a slope, or drives on a rough road, the lubricating oil at the bottom of the oil pan moves a lot, causing the oil surface to ripple and cause damage to the oil pump suction port C.
This causes problems such as exposure to the air.

To prevent this, a baffle plate D is welded inside the oil pan A (indicated by an x in the figure).

(the same applies hereafter), and the movement and ripples of the lubricating oil are alleviated.

However, when the cylinder block B deforms and vibrates due to the impact load during the engine's explosion stroke, the oil pan A also deforms inwardly and outwardly as shown by the broken and imaginary lines in Figure 2, resulting in considerable distortion. However, due to this, there is a problem that cracks may occur in the welded portion of the baffle plate D.

There is also a device proposed in Japanese Utility Model Application No. 54-25943 in which a member other than for discharging lubricating oil is attached to the drain plug provided at the bottom of the oil pan, but this is not applicable. An oil filter 8 was attached as a member, which had nothing to do with the baffle plate, and did not have a structure that could eliminate the above-mentioned drawbacks.

The present invention was devised to eliminate the drawbacks of the prior art described above, and its purpose is to prevent the deformation from being transmitted to the baffle plate even if the oil pan is deformed. The purpose of this is to install the baffle plate and oil pan at the location where the least amount of deformation occurs, to prevent concentrated stress from occurring at the location, and to improve the durability of the baffle plate and oil pan.
The purpose is to prevent the oil pump suction port from being exposed to the air even if the vehicle shakes significantly.

In short, the present invention is such that a member other than for discharging lubricating oil is attached to a drain plug portion disposed on the bottom of the oil pan using the drain plug, and the member prevents the movement of the lubricating oil. The bottom surface of the baffle plate is fixed by a retaining nut screwed onto the top of a socket portion welded and fixed to the inside of the bottom surface of the oil pan,
The baffle plate has a side surface rising from the bottom surface, and an upper portion surrounded by the side surface is open, and the side surface is appropriately bent by movement of the lubricating oil to alleviate impact. That is.

The present invention will be explained below based on embodiments shown in the drawings.

In Figures 3 to 7, 1 is an oil pan, and the baffle plates 2, 2' have bottom surfaces 3°3' as mounting surfaces, and their ends rise upward to form side surfaces 4, 4'. Those with a U-shaped cross section, those shown in FIGS. 3 to 5 are formed in a rectangular U shape, and those shown in FIGS. 6 and 7 are formed in a gutter shape. , an appropriate number of grooves 5 are provided on the side surface 4' to provide an appropriate viscous resistance to the flow of lubricating oil.

Reference numerals 6 and 6' denote mounting holes, and as shown in FIGS. 3 and 6, holding nuts are screwed onto the upper part of the socket portion 8 which is fixed by welding the inner side of the bottom surface 9 of the oil pan 1. 10
The tightening is fixed by the screws, and only the bottom surfaces 3 and 3' are supported, and the side surfaces 4 and 4' are supported.
Since the upper part surrounded by is open, the side surfaces 4, 4' are appropriately bent by the movement of the lubricating oil, thereby mitigating the impact.

What is shown in FIG. 4 is the side surface 4 of the baffle plate 2.
3, it is oriented in the left and right direction with respect to the direction of travel of the vehicle, and this means that when the oil pan 1 is large, the baffle plate 2 that blocks the front and rear direction is placed in the first position.
As in the conventional example shown in the figure, it is attached to the left and right sides of the oil pan 1 by spot welding, and is used as an auxiliary baffle plate.

The present invention is constructed as described above, and its operation will be explained below.

The baffle plate 2.2' is attached to the drain plug 7, which occupies a relatively small area of the oil pan 1, except for the bottom surfaces 3, 3', which are tightened and fixed to the socket part 8 with nuts 10. That is, since the side surfaces 4 and 4' are free, they are deflected with appropriate elasticity due to the movement of lubricating oil.
This will easily stop the flow and ripples of the lubricating oil.

As a result, even if the vehicle tilts sharply or changes speed while the vehicle is running, the lubricating oil will not follow immediately due to the baffle plates 2 and 2', but a delay will occur, so the oil pump's suction port C Lubricating oil is not suddenly lost from the surroundings, and the suction port C is prevented from being exposed to the air.

Since the present invention is constructed and operates as described above, even if the oil pan is deformed due to stress generated as the engine rotates, the deformation is not transmitted to the baffle plate. Since the attachment point is the drain plug part, no stress is generated in the attachment part, and therefore the durability of the baffle plate and the oil pan can be improved.

Furthermore, even if the vehicle shakes considerably, the oil pump suction port can be appropriately prevented from being exposed to the air.

[Brief explanation of drawings]

1 and 2 relate to a conventional example, in which FIG. 1 is a side partial cross-sectional schematic diagram showing how the baffle plate is attached to the oil pan, and FIG. 2 is an explanatory diagram showing an enlarged deformed state of the oil pan. 3 to 7 relate to embodiments of the present invention,
Fig. 3 is a side vertical cross-sectional view of the embodiment shown in Fig. 1, Fig. 4 is a front longitudinal cross-sectional view showing the installation state in which the orientation of the baffle plate in Fig. 3 is changed by 90', and Fig. 5 is a baffle of the first embodiment. FIG. 6 is a side longitudinal sectional view of the second embodiment, and FIG. 7 is a perspective view of the baffle plate of the second embodiment. 1 is an oil pan, 2 and 2' are baffle plates, 3 is a bottom surface, 4 and 4' are side surfaces, 7 is a drain plug, 8 is a socket part, 9 is a bottom surface of the oil pan, and 10 is a holding nut.

Claims (1)

[Scope of utility model registration request] A member other than for discharging lubricating oil is attached to a drain plug provided at the bottom of the oil pan using the drain plug, and the member is a baffle for stopping the plowing of the lubricating oil. The bottom surface of the baffle plate is fixed by a retaining nut screwed onto the top of a socket portion welded and fixed to the inside of the bottom surface of the oil pan, and the baffle plate is tightened from the bottom surface of the oil pan. 1. A buckle plate mounting structure characterized in that the buckle plate has an upright side surface, an upper portion surrounded by the side surface is open, and the side surface is appropriately bent by the movement of the lubricating oil to alleviate impact.