JPH061712U - Oil drain plug opening and closing structure for engine - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to an oil drain plug opening / closing structure provided in an oil drain hole at the bottom of an engine.
The purpose is to be able to open and close the drain plug from above the car. The upper tip of a rod 10 connected to a drain plug 9 at the bottom of the engine 6 passes through the inside of the engine 6 and is led out to the outside 1a of the side wall of the engine 6, and the drain plug 9 is attached to the led-out portion 10a. An opening / closing operation unit 11 for opening and closing is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an oil drain plug opening / closing structure provided in an oil drain hole at the bottom of an oil pan of an engine.

[0002]

[Prior art]

 FIG. 3 is a schematic front view of an engine having a conventional oil drain plug opening / closing structure. In FIG. 3, an oil pan 3 is provided below a cylinder block 1 of an automobile engine 6, and engine oil for lubricating various parts of the engine is stored therein.

When this oil becomes old, it needs to be replaced and replaced. At that time, after opening the oil drain hole provided at the bottom of the oil pan to drain the old oil, another oil injection hole is used. I try to inject new oil. Normally, the oil drain hole is a screw hole, and a bolt-shaped drain plug 9 including a screw plug portion and a head portion is screwed into the oil drain hole to close the oil drain hole. The drain plug 9 is opened and closed to open the oil drain hole, and the drain plug 9 is screwed and tightened to close the oil drain hole.

As described above, the oil drain hole of the engine mounted on the vehicle is located on the bottom side of the vehicle, and when changing the oil, a person loosens the drain plug 9 from below the vehicle with a tool such as a wrench. The oil drain hole is opened for removal, and after removing the oil, the drain plug 9 is tightened again with a tool to close the oil drain hole.

In the figure, 2 is a cylinder head, 4 is an intake passage, and 5 is an exhaust passage.

[0006]

[Problems to be solved by the device]

 However, in such a conventional engine oil drain plug opening / closing structure, the oil is changed while the engine is mounted on the vehicle. Therefore, in order to open / close the oil drain plug on the bottom side of the vehicle, a person who lifts the vehicle or a person It is necessary to open and close the drain plug by diving underneath, which causes a problem that the oil change work is very complicated and troublesome and the workability is poor.

The present invention has been made in view of such a problem, and the upper tip end portion of the rod connected to the drain plug is led out to the outside of the side wall of the engine, that is, the upper portion, and the drain portion is used for draining. It is an object of the present invention to provide an oil drain plug opening / closing structure for an engine, which enables the oil change work from above the vehicle by opening and closing the plug.

[0008]

[Means for Solving the Problems]

 Therefore, the oil drain plug opening / closing structure for an engine according to claim 1 of the present invention includes a drain plug which is provided in an oil drain hole portion at the bottom of the engine and opens and closes the oil drain hole portion, and is connected to the drain plug. A rod whose upper end passes through the inside of the engine and is led out to the outside of the side wall of the engine, and an opening / closing operation unit that opens and closes the drain plug at the lead-out portion where the rod is led out of the side wall. Is provided.

Further, in the oil drain plug opening / closing structure for an engine according to claim 2 of the present invention, the opening / closing operation portion is screwed to the thread groove portion provided in the lead-out portion of the rod, and is screwed to the thread groove portion. It is characterized by comprising an opening / closing operation nut that operates the rod by a loosening / fastening operation to open / close the drain plug.

[0010]

[Action]

 In the engine oil drain plug opening / closing structure according to claim 1 of the present invention described above, the oil drain plug on the bottom of the engine can be opened / closed by operating the opening / closing operation portion that is led out to the outside of the side wall of the engine. Instead of opening and closing the oil drain plug from, you can open and close it from the top of the car.

Further, in the engine oil drain plug opening / closing structure according to claim 2 of the present invention described above, when the opening / closing operation nut of the opening / closing operation portion led out to the outside of the side wall of the engine is loosened, the oil drain at the bottom of the engine is drained. The plug lowers and opens, and when the opening / closing nut is tightened, the oil drain plug at the bottom of the engine rises and closes.

[0012]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show an embodiment of an oil drain plug opening / closing structure for an engine according to the present invention, and FIG. 1 shows an oil drain plug for the engine. FIG. 2 is a schematic front view of an engine having an opening / closing structure, FIG. 2 is a partial vertical cross-sectional view of the oil drain plug opening / closing structure according to FIG. 1, and the same reference numerals as those in FIG. There is.

In FIG. 1, 1 is a cylinder block, 2 is a cylinder head, 3 is an oil pan, 4 is an intake passage, 5 is an exhaust passage, and these constitute a main part of the engine 6. As shown in FIG. 2, an oil drain hole 7 for draining oil in the oil pan 3 is formed in the bottom of the oil pan 3, and a gasket 8 is interposed outside the oil drain hole 7. The drain plug 9 is in contact.

Further, a rod 10 is connected to the inner surface side of the drain plug 9, and the rod 10 penetrates the inside of the cylinder block 1 and its upper end is projected outside the side wall exterior 1 a of the engine block 1 and is led out. Part 10a. The position of the lead-out portion 10a is appropriate near the upper and lower sides of the middle portion of the engine block side wall exterior 1a, and is not disturbed by other devices or parts provided around the engine. It is located in a place where it is easy to insert the hand from above.

It should be noted that the rod 10 penetrates a place in the engine block 1 that is not involved with the crankshaft or the like, and if it is unavoidable, the rod 10 may have a curved or bent shape. Alternatively, the rod 10 may be arranged along the inner surface of the side wall portion of the engine block 1 or may be passed through the side wall portion. The lead-out portion 10a of the rod 10 is provided with an opening / closing operation portion 11 for opening / closing the drain plug 9.

Therefore, by opening the bonnet and operating the opening / closing operation portion 11 of the rod lead-out portion 10a from above the vehicle, it is possible to open / close the drain plug 9 at the bottom and change the oil. However, it does not require the complicated and troublesome work of changing the oil from the bottom of the car as in the past, and it greatly facilitates the oil changing work and greatly improves the workability.

Further, as the opening / closing operation portion 11, for example, as shown in FIG. 2, an opening / closing operation nut 13 is formed by cutting a thread groove 12 at a rod tip portion which is a lead-out portion 10a of the rod 10 and screwed into the thread groove 12. A gasket 14 is provided between the opening / closing operation nut 13 and the outer surface of the cylinder block 1 to form the opening / closing operation portion 11. In FIG. 2, reference numeral 15 is a reinforcing edge portion of the oil drain hole portion 7.

With such a configuration, when the opening / closing operation nut 13 is loosened, the drain plug 9 is lowered together with the rod 10 and the oil drain hole 6 can be opened to drain the oil. When the nut 13 is tightened, the drain plug 9 rises together with the rod 10 and the oil drain hole 6 is closed to prevent the oil from coming out.

Therefore, in the engine oil replacement work, the oil drain hole 7 can be easily opened and closed by inserting a tool from above without lifting the car or diving under the car as in the conventional case. However, there is an advantage that the workability can be greatly improved because the oil change work can be performed very easily and the worker is not soiled with oil.

[0020]

[Effect of device]

 As described above in detail, according to the engine oil drain plug opening / closing structure of the present invention according to claim 1, the engine oil drain plug opening / closing structure is provided with an oil drain hole provided at an engine bottom portion for opening / closing the oil drain hole. A rod is provided which is connected to the drain plug and whose upper end portion passes through the inside of the engine and is led out to the outside of the side wall of the engine, and the rod is connected to the lead-out portion where the rod is led to the outside of the side wall. Since the opening / closing operation part that opens and closes the in-plug is provided, it is possible to perform the oil change work from above the car, which is much easier and easier than the conventional work from below the car. There is an advantage that it helps improve the sex.

Further, according to the oil drain plug opening / closing structure for an engine of the present invention according to claim 2, the opening / closing operation portion is screwed to the thread groove portion provided in the lead-out portion of the rod and the thread groove portion. It is composed of an opening and closing operation nut that opens and closes the drain plug by operating the rod by loosening and tightening operation, so you can open and close the oil drain plug by turning the opening and closing operation nut from above the vehicle. Therefore, there is an advantage that the worker does not have to work from the bottom side of the car, the work is easy and the oil change work is very easy and clean.

[Brief description of drawings]

FIG. 1 is a schematic front view of an engine having an oil drain plug opening / closing structure according to an embodiment of the present invention.

FIG. 2 is a partial vertical cross-sectional view of the present oil drain plug opening / closing structure.

FIG. 3 is a schematic front view of an engine having an oil drain plug opening / closing structure according to a conventional example.

[Explanation of symbols]

 1 Cylinder Block 1a Outside Side Wall 2 Cylinder Head 3 Oil Pan 4 Intake Passage 5 Exhaust Passage 6 Engine 7 Oil Drain Hole 8 Gasket 9 Drain Plug 10 Rod 10a Rod Lead-out 11 Open / Close Operation 12 Screw Groove 13 Open / Close Nut 14 Gasket 15 Reinforcing edge

Claims (2)

[Scope of utility model registration request] Claim: What is claimed is: 1. An oil drain hole at the bottom of an engine, comprising a drain plug for opening and closing the oil drain hole, the upper end of which is connected to the drain plug and passes through the inside of the engine. An oil drain for an engine, characterized in that a rod led out to the outside of the side wall is provided, and an opening / closing operation portion for opening and closing the drain plug is provided at a lead-out portion from which the rod is led out to the outside of the side wall. Plug opening and closing structure. 2. The opening / closing operation part is screwed to the thread groove part provided in the lead-out part of the rod and is screwed into the thread groove part to operate the rod by a loosening / fastening operation to open / close the drain plug. An oil drain plug opening / closing structure for an engine according to claim 1, wherein the oil drain plug opening / closing structure comprises an opening / closing operation nut.