JPH034732Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to the structure of an oil pan for an engine, and more specifically, to the structure of the part where the oil pan is attached to the engine body.

[Prior art and its problems]

An oil pan attached to an engine is installed to store oil that lubricates the engine, and is located at the lower end of the engine body. An example of this is described in Japanese Utility Model Application Publication No. 59-88206. this is,
Bring the joint surfaces of the cylinder block and oil pan into close contact with each other in the lateral direction, make the longitudinal surface of either the cylinder block or the oil pan recessed from the lateral surface, and apply liquid gasket to make it liquid-tight. , both are fixed in the lateral direction by fastening means such as bolts.

By the way, in this example, in order to remove the oil pan from the cylinder block when inspecting the engine, after removing the bolts, the two longitudinal joint surfaces fixed by the liquid gasket are separated. At that time, the liquid gasket sandwiched between both joint surfaces has strong adhesive strength, so
It is necessary to use a hammer to strike a blade-like tool into an appropriately selected joint and move it up and down to pry it open. Normally, the cylinder body is made of aluminum casting and has high rigidity, while the oil pan is made of lightweight and thin steel plate, so the flange that forms the joint surface of the oil pan deforms during separation work. be done. As a result, there is a problem that not only does reassembly work become difficult, but also the sealing performance between the oil pan and the engine body after assembly is impaired. Incidentally, Japanese Utility Model Publication No. 59-49357 discloses an example in which reinforcing members having holes are attached to both left and right walls of an oil pan in order to prevent deformation of the oil pan.

[Purpose of invention]

This invention was made in view of the above problems,
The purpose of this is to allow the oil pan to be removed without deforming its flange when the oil pan, which is attached to the engine body using a liquid gasket or bolts, is removed from the engine body for inspection or the like.
It is an object of the present invention to provide an oil pan structure capable of reinforcing the flange of the oil pan and firmly attaching an oil level sensor to the oil pan after reassembly.

[Structure of the idea]

The features of the oil pan structure of the engine of this invention are as follows:
An oil pan attached to the lower end of the engine body using a liquid gasket and fastening means,
An L-shaped reinforcing plate is attached below the oil pan installation flange, and its upper part is in contact with the bottom surface of the flange, and the lower part of the reinforcing plate is attached to the oil pan side wall together with the oil level sensor. A display section that displays the tool insertion position is provided on the joint surface between the engine body and the oil pan that are fixed and above the reinforcing plate.

[Effect]

The oil level sensor is attached to the oil pan using an L-shaped reinforcing plate. The lower part of the reinforcing plate functions as a part of the mounting bracket for the oil level sensor, and it is possible to improve the mounting strength of the oil level sensor. On the other hand, the top of the reinforcing plate abuts along the bottom surface of the oil pan flange,
The flange at its abutting position is reinforced. The oil pan is again attached to the lower end of the engine body by means of a liquid gasket and fastening means. As a result, when the oil pan is removed from the engine body for inspection, etc., the flange of the oil pan is reinforced with a reinforcing plate, so when removing the oil pan, the flange of the oil pan is reinforced with a reinforcing plate. When you pry it open by hammering in a special tool, etc.
Deformation of the flange and oil pan is suppressed.

〔Example〕

EMBODIMENT OF THE INVENTION Below, the oil pan structure of the engine of this invention is demonstrated in detail based on the drawing which shows the Example. The oil pan 1 having a flange 1A shown in FIG. 1 is a container having an approximately octagonal side wall and a bottom surface 1b at the bottom as shown in FIG. It is for the purpose of On the other hand, a flange 2A for attaching the oil pan 1 is formed at the lower end 2a (see Fig. 1) of the engine body 2, and when the engine body 2 is assembled, a strong adhesive force is applied between the flanges 1A and 2A. A plurality of liquid gaskets 3 (one shown) are sandwiched between the liquid gaskets 3 and the fastening means 4.
A stud bolt is screwed in from below to attach the oil pan 1 to the engine body 2. The oil pan 1 is provided with an oil level sensor 5 for detecting the level of stored oil.

To briefly describe the oil level sensor 5, the sensor 5a at the tip, the member 5c to which the electric wire 5b is connected, and the second
It consists of a washer 5d of the shape shown in the figure and a stopper member 5e. The sensor 5a is integrated with the member 5c, and when attached to the oil pan 1, both pass through an insertion hole 6 formed in the side wall 1a of the oil pan 1 and are inserted into the oil pan 1. Further, a washer 5d and a stopper member 5e are fixed to the member 5c, so that the oil level sensor 5 to which the electric wire 5b is connected can be handled as an integrated unit.

The reinforcing plate 7 made of steel plate has an inverted L-shaped cross section when attached to the side wall 1a of the oil pan 1.
The upper part 7A is formed along the lower surface of the flange 1A to support the flange 1A. The lower portion 7B is formed so as to partially contact the side wall 1a and to serve as a fitting for mounting the oil level sensor 5 together with the above-mentioned washer 5d. Further, a hole is opened in the lower part 7B through which the stopper member 5e can pass, so that the reinforcing plate 7 passes through the stopper member 5e and comes into contact with the washer 5d when it is attached to the side wall 1a. Note that there are multiple lower parts 7B and washers 5d (two shown).
It is fixed to the oil pan 1 with bolts 8. On the other hand, the upper part 7A shown in FIG. 3 has a band shape, and the lower part 7B
The shape is a combination of an annular shape and a band shape. Incidentally, a drain hole 9 is provided in the bottom surface 1b (see FIG. 3) that is formed continuously on the side walls on all sides shown in FIG.

The illustrated position of the surface of the flange 1A supported by the upper part 7A of the reinforcing plate 7 and the flange 2 shown in FIG.
Since the dial plate, display part 10, etc. are attached to the same position on the surface of A, when removing the oil pan 1 from the engine body 2, the work can be started from the display position, making the work easier.

According to the embodiment with such a configuration, in the engine body 2 to which this oil pan structure is applied, the oil pan 1 can be removed during inspection without deforming, and the oil level sensor 5 can be firmly attached during assembly. At the same time, the flange 1A of the oil pan 1 can be reinforced.

To remove the oil pan 1 from the assembled engine body 2 shown in FIG. 1 for inspection, first remove the stud bolt 4 fastening the flanges 1A, 2A. Both flanges 1A and 2A, which sandwich the liquid gasket 3, are firmly connected by adhesive force, so check the position of the flange 1A to which the reinforcing plate 7 is attached according to the display section 10, and set the flange at that position. A tool shaped like a knife (not shown) is hammered into the joint surface. Furthermore, by moving the tip of the tool up and down and prying it open, both flanges 1A and 2B are successively separated. In the detachment operation, the flange 1A, which is formed thin to reduce weight, is supported and reinforced by the upper part 7A of the reinforcing plate 7 at the detachment operation position, so that the flange 1A and the oil pan 1 are deformed. This does not interfere with the assembly work after inspection, and does not impair the function of the oil pan 1 or the sealing performance of the joint surfaces after assembly. Subsequently, after the flanges 1A and 2A are separated, the oil pan 1 is removed from the engine body 2, and the engine body 2 and the oil pan 1 are inspected. If inspection of the oil level sensor 5 is necessary, the bolt 8 is removed, the reinforcing plate 7 is removed, and then the oil level sensor 5 is removed. After the inspection is completed, the integrated oil level sensor 5 is inserted into the oil pan 1 so as to pass through the insertion hole 6, and the washer 5 is inserted into the oil pan 1.
After the reinforcing plate 7 is brought into contact with the side wall 1a,
The lower part 7B of the washer 5d is brought into contact with the surface of the washer 5d, and both are fixed to the oil pan 1 with bolts 8. the result,
The reinforcing plate 7 supports and reinforces the flange 1A at the upper portion 7A, and can further improve the mounting strength of the oil level sensor 5 to the oil pan 1 and the rigidity against vibration.

To attach the oil pan 1 to the engine body 2, the liquid gasket 3 is applied to the surface of either the flanges 1A or 2A, and then the display part 10 is
Align the position according to the position display, and screw in the stud bolt 4 from below. Note that the reinforcing plate 7 may be fixed to the oil pan 1 by welding, but as mentioned in the above explanation, it is effective just to apply it closely together, and in that case, the number of assembly steps such as welding can be increased. There are advantages to avoiding it.

[Effect of idea]

As can be seen from the detailed description of the embodiments above, the present invention provides an L
A reinforcing plate formed in the shape of a letter is attached, the upper part of which is in contact with the lower surface of the flange, the lower part of the reinforcing plate is fixed to the side wall of the oil pan together with the oil level sensor, and the upper part of the reinforcing plate is fixed to the side wall of the oil pan together with the oil level sensor. There is a display section on the joint surface between the oil pan and the oil pan that shows the tool insertion position, so when removing the oil pan from the engine body when inspecting the engine, etc., you can quickly remove the oil pan by following the display. The oil pan and flange can be removed without being deformed. As a result, the assembly work after inspection can be carried out smoothly, and the oil pan after assembly can sufficiently maintain its own functions. In addition, the flange of the oil pan is supported and reinforced by the reinforcing plate, and the mounting strength of the oil level sensor, which is attached to the oil pan integrally with the reinforcing plate, and the rigidity against vehicle body vibrations are improved.

[Brief explanation of the drawing]

Figure 1 is a cross section of the main part of the oil pan in the lower part of the engine to which the oil pan structure of the present invention is applied.
FIG. 3 is a view taken along the - line in FIG. 3, FIG. 2 is a perspective view of the oil pan, and FIG. 3 is a view taken along the - line in FIG. 1... Oil pan, 1A... Flange, 1a...
... Side wall, 2 ... Engine body, 3 ... Liquid gasket, 4 ... Fastening means (bolts), 5 ... Oil level sensor, 7 ... Reinforcement plate, 7A ... Upper part, 7
B... lower part, 10... display section.

Claims (1)

[Claims for Utility Model Registration] In an oil pan attached to the lower end of an engine body using a liquid gasket and fastening means, an L is provided below the mounting flange of the oil pan.
A reinforcing plate formed in the shape of a letter is attached, the upper part of which abuts along the lower surface of the flange, the lower part of the reinforcing plate is fixed to the side wall of the oil pan together with the oil level sensor, and the upper part of the reinforcing plate is fixed to the side wall of the oil pan together with the oil level sensor. An oil pan structure for an engine, characterized in that a display section for displaying a tool insertion position is provided on the joint surface between the engine body and the oil pan.