JP2010112255A - Oil pan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a large amount of oil from adhering to the hands of a worker by guiding an overflow oil in a specific direction when a cartridge oil filter is removed. <P>SOLUTION: This oil pan comprises a mounting base 1 for detachably mounting the cartridge oil filter F thereon. A gap is formed between the mounting base 1 and the oil filter F. The oil E in the oil pan flows into the oil filter F through the gap. A discharging and guiding part 5 for guiding the residual oil E' in the mounting base 1 in the specific direction P when the oil filter F is removed is formed in a part of the gap. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention has a mounting base (also referred to as “oil filter bracket”) for detachably mounting a cartridge type oil filter, and a space is formed between the mounting base and the oil filter. The present invention relates to an oil pan having a structure in which oil in the oil pan flows into the oil filter through the space.

  Oil circulated in the engine is stored in an oil pan installed at the lower part of the engine, and the stored oil is filtered through an oil filter with a filter filter built therein, and again as lubricating oil in the engine. Circulated.

  For this reason, since the filtration capacity of the filtration filter is gradually deteriorated, it is necessary to replace it with a new one. Generally, a cartridge type oil filter (hereinafter referred to as “oil filter”) with the filtration filter installed therein is required. It replaces itself with a new one.

  Specifically, a mounting seat provided with an oil supply passage for supplying oil to an oil filter and a return oil passage for supplying oil to the engine side through the oil filter at an appropriate side wall of the oil pan. A stand is provided.

  Further, a cylindrical mounting pipe communicated with the return oil passage protrudes from the mounting base, and a female screw formed in the outer periphery of the mounting pipe has a female drain hole formed in the oil filter. Screws are screwed to attach the oil filter in close contact with the mounting base (see, for example, Patent Documents 1 and 2).

  Here, FIG. 7A and FIG. 7B are cross-sectional views of use in which main parts of the conventional oil pan 100 are outlined. 7A is a sectional view of the main part showing the state in which the oil filter F is mounted on the mounting base 101, and FIG. 7B shows the state in which the oil filter F is detached from the mounting base 101. FIG. FIG.

  For example, in the oil pan 100, the lower surface of the mounting base 101 provided at an appropriate side wall is recessed upward leaving the outer peripheral edge 112, and a space 113 is formed between the recessed upper surface 111 and the oil filter F. Forming.

  Further, a cylindrical mounting pipe 104 communicating with the return oil passage 103 is projected at the center of the upper surface 111, and a male screw 141 is formed on the outer periphery of the mounting pipe 104.

  In addition, on the upper surface 111, a feed port 102 a that is an end portion of the feed oil passage 102 is opened alongside the attachment pipe 104.

  On the other hand, the oil filter F is recessed slightly below the top end of the bottomed cylindrical outer case F1, the cylindrical filtration filter F2 provided in the outer case F1, and the outer case F1. And a lid F3 that seals the upper surface of the exterior case F1.

  An annular packing F11 made of rubber is embedded in the upper end surface of the outer case F1 to improve the airtightness between the upper end surface of the outer case F1 and the outer peripheral edge 112 of the mounting base 101. Oil leakage when the oil filter F is attached to is prevented.

  In the filtration filter F2, for example, a plurality of filtration pieces (not shown) are arranged radially at intervals, and a cylindrical discharge port F21 is formed at the center of these filtration pieces (not shown).

  The lid F3 has a discharge hole F31 communicating with the discharge port F21 of the filter F2 at the center, and a female screw F32 that can be screwed to the male screw 141 of the mounting tube 104 at the inner periphery of the discharge hole F31. Is forming.

  In addition, a plurality of oil inflow holes F33 are formed at equal intervals on the outer periphery of the discharge hole F31, and oil E enters the oil filter F through these oil inflow holes F33.

  In the oil pan 100 formed in this way, first, the oil discharge hole F31 of the oil filter F is extrapolated toward the mounting pipe 104 of the mounting base 101, and if the oil filter F is rotated, the oil discharge hole F31. The female screw F32 is screwed onto the male screw 141 of the attachment tube 104 and tightened, so that the oil filter F can be attached in close contact with the attachment base 101.

  Then, as is well known, the oil E that has been pressure-fed to the feed oil passage 102 via an oil pump (not shown) is discharged from the feed port 102a as indicated by the white arrow in the figure.

  The oil E discharged from the feed port 102a passes through the space 113 of the mounting base 101 and is diffused to the upper surface of the lid F3 of the oil filter F, and a plurality of oil inflow holes opened on the upper surface of the lid F1. It flows into the inside of the oil filter F from F33.

  Further, the oil E that has flowed into the inside is filtered by the filter F2, and joins the outlet F21 at the center of the filter F2.

  The combined oil E after filtration passes through the mounting pipe 104 screwed into the oil discharge hole F31 and is discharged to the return oil passage 103 as shown by the white arrow in the figure. [Refer to FIG. 7 (a). ].

  On the other hand, in order to remove the oil filter F attached to the mounting base 101, such as when replacing the oil filter F with a new one, wrap the outer peripheral surface of the oil filter F with a tool (not shown) such as an oil filter wrench. The oil filter F is rotated in the direction opposite to the tightening direction, and the tightening of the oil filter F is loosened to some extent.

And if the outer peripheral surface of the oil filter F is grasped by hand and further loosened in the reverse direction, the packing F11 of the oil filter F that has been in close contact with the outer peripheral edge 112 of the mounting base 101 will eventually be detached and attached. The female screw F32 of the oil discharge hole F31 is detached from the male screw 141 of the tube 104, and the oil filter F can be removed from the mounting base 100 (see FIG. 7B). ].
Japanese Patent Laid-Open No. 11-303616 Japanese Patent Laid-Open No. 10-220214

  However, in this oil pan 100, when the oil filter F is removed from the mounting base 101, more specifically, when the packing F11 on the upper surface of the oil filter F and the outer peripheral edge 112 of the mounting base 101 are separated from each other, the mounting base As shown by the grid lines in the figure, the remaining oil E ′ (hereinafter referred to as “residual oil E ′”) leaks downward into the space 113 of the table 101 [FIG. See b). ].

  The residual oil (not shown) in the supply oil passage 102 is identified with the residual oil E ′ in the space 113, and the residual oil (not shown) in the return oil passage 103 is attached to the mounting pipe. The description will be made assuming that the oil filter F is left in the oil filter F.

  On the other hand, since the residual oil E ″ is also stored on the upper surface of the lid F3 of the oil filter F, the residual oil E ′ leaked from the space 113 has no place to go from the upper surface of the oil filter F to the oil filter F. It overflows in a non-directional direction toward the entire circumference.

  Therefore, the conventional oil pan 100 has a problem that a large amount of residual oil E ′ is likely to adhere to the operator's hand due to the overflowing residual oil E ′.

  The present invention has an object to solve such a problem, and can guide the residual oil overflowing when the oil filter is removed in a specific direction to prevent a large amount of residual oil from adhering to the operator's hand. Provide an oil pan.

To solve the above problem,
The present invention has a mounting base for detachably mounting a cartridge type oil filter, a space is formed between the mounting base and the oil filter, and oil in the oil pan is placed in the space. In the oil pan of the structure that flows into the oil filter through,
A discharge guide portion is formed in a part of the space for guiding the residual oil in the mounting base in a specific direction when the oil filter is removed.

  For this reason, in the present invention, the residual oil that overflows when the oil filter is removed is guided in a specific direction by the discharge guiding portion, and if the oil filter is gripped by avoiding this specific direction, a large amount of oil is placed in the operator's hand. Residual oil can be prevented from adhering.

  Here, the specific direction means a direction in which residual oil in the mounting base overflows when the oil filter is removed.

  In addition, the specific direction can be set to a desired direction by the discharge guiding portion. For example, if the specific direction is directed to the outer wall surface of the oil pan, the residual oil flows down without being scattered along the outer wall surface of the oil pan. preferable.

  In addition, the space in which the discharge guiding portion of the present invention is formed is a larger space than other portions.

  Therefore, when the oil filter is removed, a large amount of oil flows out in a specific direction from the space where the discharge guiding part is formed, but only a small amount of oil flows out from other parts, so that a working space can be secured, It is possible to prevent a large amount of residual oil from adhering to the operator's hand.

  Here, the space in which the discharge guiding part is formed means a part of the space including the discharge guiding part, and the other part means a part of the space not including the discharge guiding part.

  The shape and number of the discharge guide portions are not particularly limited, and any discharge guide portions can be used as long as they can discharge residual oil in a specific direction.

  Further, the present invention is characterized in that a step portion is formed at the boundary between the discharge guiding portion and the other portion, and the flow of the residual oil is regulated from the discharge guiding portion toward the other portion. .

  Therefore, when the oil filter is removed, the stepped portion can restrict the residual oil in the discharge guiding portion from flowing to other portions, and can further prevent the residual oil from adhering to the operator's hand. .

  Further, the discharge guiding portion of the present invention is preferably formed below the feed opening of the feed oil passage, and if the discharge guide portion is formed at this position, it remains in the feed oil passage. The residual oil is also guided to the discharge guide part and can be discharged in a specific direction.

  Furthermore, in the present invention, the mounting base is provided so as to be inclined so that the specific direction is on the lower side.

  Therefore, the residual oil that overflows when the oil filter is removed can be reliably guided in a specific direction by the synergistic effect of the discharge guide part and the inclination of the mounting base, and the residual oil adheres to the operator's hand. Can be surely prevented.

  In addition, it is preferable to provide a mark capable of displaying the specific direction of the residual oil at an appropriate position on the mounting base or the oil pan because the specific direction can be easily confirmed from the outside by an operator.

  According to the oil pan of the present invention, the residual oil that overflows when the oil filter is removed from the mounting base is guided in a specific direction by the discharge guiding portion, so if the oil filter is gripped by avoiding this specific direction, It is possible to prevent a large amount of residual oil from adhering to the operator's hand.

  Hereinafter, an embodiment of the oil pan A of the present invention will be described with reference to the drawings.

  FIG. 1 is a use state diagram showing an embodiment of an oil pan A of the present invention. FIG. 2 is an enlarged cross-sectional view showing a main part of the oil pan A shown in FIG. FIG. 3 is an exploded perspective view of FIG.

  In the present invention, when the oil filter F is removed from the mounting base 1 of the oil pan A, the residual oil E ′ remaining in the mounting base 1 is guided to the discharge guiding portion 5 that is guided in the specific direction P. It is characterized by the formation. The details will be described below.

  The oil pan A of the present embodiment is formed in a box shape with a bottom and is installed in the lower part of the engine EN.

  Further, an attachment base 1 for detachably attaching the oil filter F is provided on the side wall of the oil pan A.

  The mounting base 1 has a feed oil passage 2 for feeding oil E to the oil filter F and a return oil passage 3 for feeding the filtered oil E to the engine EN side through the oil filter F. I have.

  The supply oil passage 2 and the return oil passage 3 communicate with the inside of the engine EN and the inside of the oil pan A through the side wall of the oil pan A, respectively.

  The mounting base 1 is recessed upward leaving the outer peripheral edge 12 on the lower surface, and a space 13 is formed between the recessed upper surface 11 and the oil filter F.

  A cylindrical mounting tube 4 communicating with the return oil passage 3 projects downward at the center of the mounting base 1, and a male screw 41 is formed on the outer periphery of the mounting tube 4.

  The discharge guiding portion 5 can be adopted as long as it can guide the residual oil E ′ in the specific direction P, but in this embodiment, an upper surface 11 ′ that is recessed further upward than the position of the upper surface 11 of the space 13 is formed. Thus, the discharge guiding portion 5 is formed.

  In other words, the upper surface 11 ′ of the discharge guiding part 5 is formed at a position (upper side) higher than the upper surface 11 of the other part.

  Further, the discharge guiding portion 5 can be formed at a desired position on the upper surface 11 according to the specific direction P. However, the discharge guiding portion 5 of this embodiment is formed below the feeding port 2a of the feeding oil passage 2. is doing.

  Furthermore, a stepped portion 52 is formed at the boundary between the discharge guiding portion 5 of the present embodiment and another portion, and the residual oil E ′ is restricted from flowing from the discharge guiding portion 5 toward the other portion. is doing.

  In the present embodiment, the discharge guide portion 5 is illustrated in which the upper surface 11 ′ on which the discharge guide portion 5 is formed and the upper surface 11 on which the discharge guide portion 5 is not formed bisect the mounting base 1.

  Therefore, the volume (capacity) of the space in which the discharge guiding portion 5 of the present embodiment is formed can be formed to a volume (capacity) larger than the volume (capacity) of other parts.

  On the other hand, as the oil filter F, an existing filter can be used. In this embodiment, the bottomed outer case F1 whose upper surface is opened, the cylindrical filtration filter F2 provided in the outer case F1, and the outer case An oil filter F constituted by a lid F3 that is recessed slightly below the upper end of the case F1 to seal the upper surface of the outer case F1 is illustrated.

  An annular packing F11 made of rubber is embedded in the upper end surface of the outer case F1 to improve the airtightness between the upper end surface of the outer case F1 and the outer peripheral edge 12 of the mounting base 1, so that the mounting base 1 Oil leakage when the oil filter F is attached to is prevented.

  The filtration filter F2 has a plurality of filtration pieces (not shown) arranged radially at intervals, and forms a cylindrical discharge port F21 in the center of these filtration pieces (not shown).

  The lid F3 has a discharge hole F31 communicating with the discharge port F21 of the filter F2 at the center, and a female screw F32 that can be screwed to the male screw 41 of the mounting tube 4 at the inner periphery of the discharge hole F31. Is forming.

  A plurality of oil inflow holes F33 are formed at equal intervals on the outer periphery of the discharge hole F31, and oil E flows into the oil filter F through the oil inflow holes F33.

  The oil pan A of the present embodiment configured as described above is used in the following manner.

  4 (a) and 4 (b) are usage cross-sectional views schematically illustrating a main part of the oil pan A of the present embodiment. 4A is a sectional view of the main part showing a state in which the oil filter F is attached to the mounting base 1, and FIG. 4B shows a state in which the oil filter F is removed from the mounting base 1. FIG. In addition, about the site | part which is common in FIGS. 1-3, the same code | symbol is attached | subjected.

  First, the oil discharge hole F31 of the oil filter F is extrapolated toward the mounting pipe 4 of the mounting base 1 and when the oil filter F is rotated, the female screw F32 of the oil discharge hole F31 is connected to the male pipe of the mounting pipe 4. The oil filter F can be attached in close contact with the mounting base 1 by being screwed onto the screw 41 and tightened.

  Then, as is well known, the oil E pressure-fed to the feed oil passage 2 via an oil pump (not shown) is discharged from the feed port 2a as indicated by a white arrow in the figure.

  Further, the oil E discharged from the feed port 2a passes through the discharge guide portion 5 and the space 13, is diffused to the upper surface of the lid F3 of the oil filter F, and a plurality of oil inflow holes opened on the upper surface of the lid F1. It flows into the inside of the oil filter F from F33.

  Also, the oil E that has flowed into the inside is filtered by the filter F2, and joins the outlet F21 at the center of the filter F2.

  Then, the combined oil E after filtration passes through the mounting pipe 4 screwed into the oil discharge hole F31 and is discharged to the return oil passage 3 as shown by the white arrow in the figure. [Refer to FIG. 4 (a). ].

  On the other hand, in order to remove the oil filter F attached to the mounting base 1, such as when the oil filter F is replaced with a new one, a tool (not shown) such as an oil filter wrench is used to remove the oil filter F outer case F1. The oil filter F is loosened to some extent by holding the outer peripheral surface and rotating the oil filter F in the direction opposite to the tightening direction.

  And if the outer peripheral surface of the outer case F1 of the oil filter F is grasped by hand and further loosened in the reverse direction, the packing F11 of the oil filter F that has been in close contact with the outer peripheral edge 12 of the mounting base 1 will eventually come off. At the same time, the female screw F32 of the oil discharge hole F31 is detached from the male screw 41 of the mounting tube 4, and the oil filter F can be removed from the mounting base 1 (see FIG. 4B). ].

  When the oil filter F is removed from the mounting base 1, in detail, when the packing F11 on the upper surface of the oil filter F and the outer peripheral edge 12 of the mounting base 1 are separated from each other, Residual oil E ′ indicated by the middle grid line is leaked downward (see FIG. 4B). ].

  In addition, since the discharge | emission guidance | induction part 5 of a present Example is continuously formed in the downward direction of the feed opening 2a of the feed oil path 2, the residual oil (not shown) in the feed oil path 2 is It is assumed that the residual oil E ′ in the discharge guiding portion 5 is the same, and the residual oil (not shown) in the return oil passage 3 passes through the mounting pipe 4 and remains in the oil filter F. To do.

  On the other hand, since the residual oil E ″ is also stored on the upper surface of the lid F3 of the oil filter F, the residual oil E ′ discharged from the discharge guiding portion 5 and the space 13 has no place to go, and the oil filter F It will overflow from the top.

  However, in the oil pan A of the present embodiment, since the discharge guide portion 5 for guiding the residual oil E ′ in the specific direction P is formed on the mounting base 1, the residual discharged from the discharge guide portion 5 and the space 13. The oil E ′ is guided to the discharge guiding portion 5 and overflows in the specific direction P.

  Specifically, since the volume (capacity) of the space in which the discharge guiding part 5 of the present embodiment is formed is larger than the volume (capacity) of other parts, the discharge guiding part 5 is formed. The residual oil E ′ overflowing from the created space is larger than the residual oil E ′ in other parts.

  Therefore, most of the residual oil E ′ overflowing in a large amount overflows vigorously in the side of the oil filter F closest to the discharge guiding portion 5, that is, in the specific direction P.

  In addition, due to the viscosity of the residual oil E ′, the remaining oil E ′ in other parts is also attracted in the specific direction P.

  As a result, most of the residual oil E ′ discharged from the discharge guiding portion 5 and the space 13 is guided to the discharge guiding portion 5 and discharged in a specific direction P.

  Strictly speaking, a part of the residual oil E ′ may slightly flow out in a direction other than the specific direction P as indicated by a broken line arrow in the figure. , Very small.

  As described above, according to the oil pan A of the present embodiment, when the oil filter F is removed from the mounting base 1, the residual oil E ′ that overflows is guided in the specific direction P. If the oil filter F is gripped by avoiding it, it is possible to prevent a large amount of residual oil E ′ from adhering to the operator's hand.

  FIGS. 5A to 5D are plan views of a state in which another embodiment of the discharge guiding portion 5 is viewed from the lower surface side of the mounting base 1. In addition, about the code | symbol which is common in FIGS. 1-4, the same code | symbol is attached | subjected and only the characteristic of a present Example is demonstrated below.

  For example, FIG. 5A shows the fan-shaped discharge guiding portion 5 in which the stepped portion 52 is formed at a position of about 30 ° to 45 ° around the feeding port 2a.

  FIG. 5B shows a crescent-shaped discharge guiding portion 5 in which the step portion 52 is formed at a position passing through the feeding port 2 a and the attachment tube 4.

  FIG. 5C shows an inverted C-shaped discharge guiding portion 5 in which a stepped portion 52 is formed leaving the peripheral portion of the mounting tube 4.

  FIG. 5D shows a substantially rectangular discharge guiding portion in which the step portion 52 has two parallel step portions 52 from the both ends of the mounting tube 4 to the feed port 2a side. 5 is formed.

  These discharge guiding portions 5 are merely examples, and the shape thereof is not limited. However, at least when the oil filter F is removed from the mounting base 1, the residual oil E ′ can be guided in the specific direction P. If there is, it can be adopted.

  However, the volume (capacity) of the space in which the discharge guiding portion 5 of the present embodiment is formed may not be larger than the volume (capacity) of other parts.

  However, if the residual oil (not shown) in the feed oil passage 2 communicated with the feed port 2a is taken into consideration, the discharge guiding portion 5 illustrated in FIGS. It is considered that the residual oil E ′ overflowing from the space where the discharge guiding portion 5 is formed is larger than the residual oil E ′ in other portions.

  In addition, in the said Example, although the upper surface 11 'dented upward from the upper surface 11 which does not comprise the discharge guidance part 5 was formed, the discharge guidance part 5 was comprised, However, conversely to this structure, the discharge guidance part 5 is provided. Of course, it does not matter even if it is the discharge guiding part 5 in which the upper surface 11 ′ which is recessed upward is formed by projecting the upper surface 11 which is not configured downward.

  FIG. 6 is a use state diagram showing another embodiment of the oil pan A. FIG.

  In addition, about the code | symbol common to FIGS. 1-5, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted, and only the characteristic of a present Example is demonstrated below.

  The oil pan A of the present embodiment is characterized in that the mounting base 1 is provided so as to be inclined so that the specific direction P is on the lower side.

  That is, while the mounting base 1 shown in FIG. 1 has the axial center provided in the vertical direction, the mounting base 1 of this embodiment tilts the axial center at an arbitrary angle θ from the vertical direction. In addition, the inclined direction (the direction in which the mounting base 1 is on the lower side) is set as the specific direction P.

  Therefore, the oil pan A of the present embodiment is attached or removed in a state where the oil filter F is also inclined as the mounting base 1 is inclined.

  Therefore, according to the oil pan A of the present embodiment, when the oil filter F is removed from the mounting base 1, the residual oil E ′ that overflows is guided in the specific direction P by the discharge guiding portion 5, and the mounting seat By the inclination of the stand 1, it can be surely guided in the specific direction P, and oil can be reliably prevented from adhering to the operator's hand.

It is a use condition figure showing one example of oil pan A of the present invention. It is an expanded sectional view of the state which decomposed | disassembled the principal part of the oil pan A shown in FIG. FIG. 3 is an exploded perspective view of FIG. 2. (A), (b) is use sectional drawing which outlined the principal part of the oil pan A of a present Example. (A) is a sectional view of the main part showing a state in which the oil filter F is attached to the mounting base 1, and (b) is a main part showing a state in which the oil filter F is removed from the mounting base 1. It is a use sectional view. (A)-(d) is the top view of the state which looked at the other Example of the discharge induction part 5 from the lower surface side. It is a use condition figure showing other examples of oil pan A. (A), (b) is use sectional drawing which outlined the principal part of the conventional oil pan 100. FIG. (A) is a sectional view of the main part showing a state where the oil filter F is attached to the mounting base 110, and (b) is a main part showing a state where the oil filter F is removed from the mounting base 110. It is a use sectional view.

Explanation of symbols

A Oil pan A1 Oil pan outer wall surface E Oil E 'Residual oil P Specific direction 1 Mounting base 13 Space 2 Feeding oil passage 2a Feeding port 3 Return oil passage 5 Discharge guiding portion 52 Step portion

Claims (6)

A mounting base for detachably mounting the cartridge type oil filter; a space is formed between the mounting base and the oil filter; and the oil in the oil pan passes through the space to the oil filter. In an oil pan with a structure that flows into
An oil pan according to claim 1, wherein a discharge guiding portion is formed in a part of the space for guiding the residual oil in the mounting base in a specific direction when the oil filter is removed. The oil pan according to claim 1,
An oil pan characterized in that the space where the discharge guiding portion is formed is a larger space than the other portions. The oil pan according to claim 2,
An oil pan, wherein a step portion is formed at a boundary between the discharge guiding portion and another portion, and the flow of residual oil is regulated from the discharge guiding portion toward the other portion. In the oil pan according to any one of claims 1 to 3,
The oil pan characterized in that the discharge guiding portion is formed below the feed port of the feed oil passage. In the oil pan according to any one of claims 1 to 4,
An oil pan, wherein the mounting base is provided so as to be inclined so that a specific direction is on the lower side. In the oil pan according to any one of claims 1 to 5,
An oil pan characterized by having a specific direction directed to the outer wall surface of the oil pan.

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