JPH066896U - Drain bolt - Google Patents

Abstract

(57) [Summary] [Purpose] By changing the structure of the drain bolt,
A bolt that improves the cleanliness of the circulating oil is provided by attracting magnetic particles of the dust in the oil by the magnetic field of the permanent magnet and stopping it in the oil pan to prevent circulation. [Structure] In order to attract magnetic fine dust by magnetism so that it can be easily taken out when changing oil, the tip of the drain bolt 1 attached below the oil pan of the engine and removed when changing oil is a permanent magnet. The drain bolt has a structure made of a material functioning as No. 4, a structure in which a permanent magnet is screwed to the tip of the drain bolt, and a drain bolt having a structure housed inside the tip of the drain bolt.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drain bolt that is attached to an engine oil outlet such as an oil pan of an engine of an automobile or the like.

[0002]

[Prior art]

 Conventionally, this type of bolt used to be a metal bolt, and had only the function of plugging the oil so that it would not leak from the hole that drains the engine oil when the engine oil is changed, etc. in normal use. . Therefore, its material and structure are simple, and a hexagonal bolt-shaped drain bolt 1 and the like as shown in FIG. 5, which is machined from aluminum alloy or mild steel, is often used. The engine oil circulates with the worn debris from various parts of the engine and the debris produced during production. Although relatively large debris is removed by the oil filter during circulation, there is a problem that small debris passes through the filter and circulates, accelerating the wear of the engine.Removing as much debris as possible from the circulating oil is a problem. It is necessary to keep it, but there is a problem that it cannot be removed completely.

[0003]

[Problems to be solved by the device]

 In order to solve the above-mentioned problem, the problem of the present invention is to change the structure of the drain bolt set below the oil pan so that the dust in the oil that is magnetized is the magnetic field of the permanent magnet. The purpose is to provide a drain bolt that improves the cleanliness of the circulating oil by attracting it, stopping it in the oil pan, and preventing it from circulating.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a drain bolt that is attached to the bottom of the engine oil pan and is removed when the oil is changed so that the magnetically attracted debris can be easily taken out when the engine oil is changed. The structure has a permanent magnet fixed to the tip. That is, the present invention provides (1) a drain bolt to be mounted on an oil pan portion of an engine of an automobile or the like, characterized in that a drain bolt has a structure in which a tip portion of the bolt is made of a material that functions as a permanent magnet. ) The drain bolt described in (1) above, which has a structure in which a permanent magnet is screwed to the tip of the drain bolt, and (3) the structure in which the permanent magnet is housed inside the tip of the drain bolt (1). The drain bolt described in (2).

[0005]

[Action]

 The drain bolt is located below the engine oil pan, etc. and can be removed when changing oil.Therefore, by constructing the drain bolt structure with a permanent magnet material so that the tip part generates a magnetic field, it is easy to handle. Magnetic debris can be retained under the oil pan, and can be easily removed from the machine by removing the drain bolt when replacing.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a drain bolt according to an embodiment of the present invention. FIG. 2 is a side view showing a general mounting position of the drain bolt of the oil pan of the engine. FIG. 3 is a side view showing another embodiment of the present invention in which a permanent magnet is fixed to a drain bolt with a screw. FIG. 4 is a side view showing a structure in which a permanent magnet is housed inside a drain bolt according to another embodiment of the present invention. As shown in FIGS. 1, 3 and 4, the drain bolt of the present invention is formed by joining a material functioning as a permanent magnet 4 to the tip of the conventional drain bolt 1 shown in FIG. It is a fixed structure.

As shown in FIG. 2, the engine oil circulated in the engine 2 is returned to the oil pan 3, but is filtered by an oil filter on the way to remove a part of debris. However, magnetic debris such as fine metal powder generated by sliding of the moving parts of the engine that passes through the oil filter is mixed. By using the drain bolt 1 of the present invention shown in FIG. 1, the magnetic debris should be fixed around the tip of the drain bolt 1 by the attraction force of the permanent magnet 4 at the tip. It was possible to maintain the engine oil clean. The more accurately the engine is assembled, the finer the powder will be, but the drain bolt keeps the engine oil clean, and as a result, the engine life can be extended and high reliability can be expected. As described above, an example of attaching to an oil pan of an engine was used, but the same effect was obtained by attaching the drain bolt of this structure to a mission case, gear box, etc. of an automobile for the same purpose. Further, as shown in FIG. 3 and FIG. 4, the permanent magnet 4 is attached to the drain bolt 1 of the present invention by screwing so that the screw 5 having different physical properties can be easily and reliably joined. And can be supplied at low cost. Further, as shown in FIG. 4, by accommodating it in the screw part at the tip, the purpose can be achieved without changing the size of the conventional drain bolt, and the structure of other parts is not changed, which is technically and economically. We can also supply products that are easy to use.

[0008]

[Effect of device]

 As described above, according to the drain bolt of the present invention, minute magnetic powder dust in engine oil and the like is removed, engine oil and the like can be kept clean for a longer time, and the life of the engine and the like can be extended.

[Brief description of drawings]

FIG. 1 is a side view showing a drain bolt according to an embodiment of the present invention.

FIG. 2 is a side view showing a general mounting position of a drain bolt of an oil pan of an engine.

FIG. 3 is a side view showing another embodiment of the present invention in which a permanent magnet is fixed to a drain bolt with a screw.

FIG. 4 is a side view showing a structure in which a permanent magnet is housed inside a drain bolt according to another embodiment of the present invention.

FIG. 5 is a side view showing a conventional drain bolt used for an oil pan.

[Explanation of symbols]

 1 Drain bolt 2 Engine 3 Oil pan 4 Permanent magnet 5 Screw

Claims (3)

[Scope of utility model registration request] 1. A drain bolt, which is attached to an oil pan portion of an engine of an automobile or the like, wherein the tip portion of the bolt is made of a material that functions as a permanent magnet. 2. The drain bolt according to claim 1, wherein a permanent magnet is screwed to the tip of the drain bolt. 3. The drain bolt according to claim 1 or 2, wherein a permanent magnet is housed inside the tip of the drain bolt.