JP2007029804A - Strainer for fill opening - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a strainer for a fill opening capable of preventing impurities from entering into a tank removing a strainer from the fill opening to wash the strainer, and surely removing impurities when supplying an oil. <P>SOLUTION: This strainer for the fill opening has a main strainer member 5 mounted at the fill opening 101 and having a first mesh-like part 8 filtering impurities, and a sub-strainer member 50 detachably mounted inside the main strainer member 5 and having a second mesh-like part 58 filtering impurities. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an oil supply port strainer that is attached to an oil supply port of an oil tank provided in various heavy machinery such as a construction machine and prevents impurities from entering the oil tank during oil supply.

  Normally, oil filler strainers (hereinafter also simply referred to as “strainers”) that prevent impurities from entering the oil tank during refueling are attached to the oil tanks of the oil tanks of the various heavy machinery described above. Generally, as disclosed in Patent Document 1 and Patent Document 2, the strainer is configured by fixing a mesh portion along the periphery of a frame formed in a cup shape. It is attached so as to fit in. After installing such a strainer at the oil filler opening, the oil hose is inserted to lubricate the tank, so that impurities are caught by the mesh portion and prevented from entering the oil tank.

Then, the impurities accumulated in the strainer over the mesh portion are removed by removing the strainer from the oil filler port and washing it after refueling.
Utility model No. 2508286 Japanese Patent No. 3147688

  However, in the strainer disclosed in Patent Document 1 and Patent Document 2 described above, it is impossible to prevent impurities from entering the tank while the strainer is removed from the fuel filler opening and being cleaned. In addition, although the strainer is provided with a mesh portion, the oil released from the hose during refueling has a momentum, so that the impurities are pressed by this and the impurities pass through the holes in the mesh portion, so that the impurities are sufficiently removed. Sometimes I couldn't remove it.

  The present invention has been made paying attention to the above-mentioned problems, and prevents impurities from entering the tank while removing the strainer from the fuel filler opening and cleaning, and also reliably removes impurities during fueling. It is an object of the present invention to provide a fuel filler strainer that can be used.

  In order to solve the above-described problem, a fuel filler strainer according to the present invention is attached to a fuel filler port, and has a first strainer member having a first mesh portion for filtering impurities, and is detachable inside the main strainer member. And a sub-strainer member having a second mesh portion for mounting and filtering impurities.

  In the fuel filler strainer having the above-described configuration, impurities entering from the outside of the fuel filler are accumulated in the second mesh portion of the auxiliary strainer member located inside. When performing a cleaning operation to remove impurities, the main strainer having the first mesh portion can be removed from the sub-strainer member in which impurities are accumulated while the main strainer is attached to the oil supply port. Impurities are prevented from entering the tank.

  In addition, as described in claim 2, it is preferable that the auxiliary strainer member mounted on the inner side of the main strainer member is configured to be able to be locked to the peripheral wall of the main strainer member. With such a configuration, the auxiliary strainer member can be easily removed by pulling it out of the main strainer member.

  According to a third aspect of the present invention, when the auxiliary strainer member is mounted inside the main strainer member, it is preferable that a gap is formed between the first mesh portion and the second mesh portion. . Since the gap is formed between the first mesh portion and the second mesh portion in this way, the oil flow that has passed through the second mesh portion of the sub strainer member on the inner side is wound in the gap. Even if the impurities pass through the mesh of the sub strainer member, the impurities are easily captured by the first mesh member of the main strainer member.

  In addition, as described in claim 4, when the auxiliary strainer member is mounted inside the main strainer member, the holes of the first mesh portion and the holes of the second mesh portion facing each other are shifted. It is preferable that That is, when the first and second mesh portions facing each other are viewed in plan, the holes do not exactly coincide with each other, but the two mesh portions are passed by being arranged so as to be shifted from each other. Impurities can be prevented from passing through the first mesh portion as they are, and the impurities can be easily captured by the first mesh portion of the main strainer member.

  In addition, as described in claim 5, it is preferable that the hole of the second mesh portion is smaller than the hole of the first mesh portion. In such a configuration, most of the impurities are trapped in the second mesh of the secondary strainer member before reaching the first mesh of the main strainer member.

  According to the present invention, in order to remove impurities, the strainer is removed from the fuel filler port, and even while this is being cleaned, impurities can be prevented from entering the tank. A strainer capable of reliably removing impurities is obtained.

  The strainer according to the present invention includes a main strainer member that is attached to an oil filler opening of an oil tank, and a sub-strainer member that is detachably attached to the inside of the main strainer member. Hereinafter, a first embodiment of a strainer according to the present invention will be described with reference to FIGS. 1 to 4. In these drawings, FIG. 1 is a view showing a state in which the auxiliary strainer member is removed from the main strainer member, FIG. 2 is a view showing a state in which the auxiliary strainer member is mounted on the main strainer member, and FIG. FIG. 4 is a cross-sectional view taken along line AA in FIG. 2 and FIG. 4 is a view for explaining the action of the float member when fuel is supplied.

  As described above, the strainer 1 includes the main strainer member 5 that is attached to the oil supply port 101 of the oil tank 100 and the auxiliary strainer member 50 that is detachably attached to the inside of the main strainer member 5.

  The main body 6 of the main strainer member 5 is formed in a cylindrical shape (substantially cup-shaped) having a bottom and opening upward so as to correspond to the diameter of the oil supply port 101 of the oil tank 100. A frame 7 for maintaining rigidity and preventing breakage, and a mesh portion (first mesh portion) 8 that allows oil to permeate into the oil tank while filtering impurities are provided. This 1st net-like part 8 is comprised by making a metal or a synthetic resin wire cross | intersect the inclination direction.

  The frame 7 is arranged in the vertical direction of the main body 6 (from the opening to the bottom) at substantially the same interval connecting the two frames to the upper frame 7a formed in a cylindrical shape, the bottom frame 7b that defines the bottom wall. A plurality of vertical (direction) frames 7c, and one horizontal (direction) frame 7d that connects the vertical frames 7c in the circumferential direction at substantially the intermediate position thereof. The first mesh portion 8 is provided so as to cover the gap between the frames described above, and the frame and the first mesh portion form a peripheral wall and a bottom wall of the main body 6. In this case, the frame 7 and the first mesh portion 8 can be integrally formed of synthetic resin or metal. Alternatively, the frame 7 and the first mesh portion 8 may be formed separately, and the first mesh portion 8 may be formed by attaching the frame 7 to the frame 7 by adhesion or welding.

  The bottom frame 7b is composed of a circular frame and a cross-shaped frame built in the same as a bottom frame 57b of a sub-strainer member described later (see FIG. 3). Further, a plurality of horizontal frames 7d may be formed or may not be formed at all.

  At the upper end opening position of the upper frame 7a, a flange portion (engaging portion) 7f bulging outward in the radial direction is formed. When the main strainer member 5 is attached to the oil supply port 101, the flange portion 7f is formed at the periphery of the oil supply port 101 of the oil tank 100, or as shown in FIG. Part) 102, and the main body 6 is held so as not to fall into the oil tank.

  Further, in one of the plurality of vertical frames 7 c constituting the main strainer member 5, a bulging portion 7 c ′ bulged toward the radially outer side and the inner side is formed to extend in the vertical direction. The bulging portion 7c ′ is integrally formed with a guide hole 9 having a substantially elliptical cross section that is open at the top and bottom, and an oil level gauge float member 10 is inserted into the guide hole 9 from the upper opening 9a. ing. The float member 10 has a circular cross section, and is inserted so as to be movable up and down in an elliptically formed guide hole 9, and a stopper 10 a protruding in the circumferential direction is provided at an upper end portion thereof. It is formed so as to be brought into contact with the opening 9a of the guide hole and prevented from falling off. A float 11 that is hollow and formed to float on oil is attached to the end of the float member 10, and the float member 10 is moved up and down as the oil level (oil level H) moves up and down. The liquid level can be detected (see FIG. 4).

  As shown in the figure, the portion where the guide hole 9 is formed may be a portion of the vertical frame 7c, or a position different from the position where the vertical frame is disposed on the peripheral wall of the main body 6. On the other hand, it may be formed in the bulging portion formed bulging inside, bulging outside, or bulging inside and outside, and may be formed separately from the main body 6. .

  An auxiliary strainer member 50 that is detachably mounted is installed inside the main strainer member 5 described above. The sub-strainer member 50 is also formed in the same manner as the main strainer member 5 described above, and its main body 56 has a cylindrical shape (substantially cup-shaped) with a bottom and open upward so as to correspond to the diameter of the main strainer member 5. ). The peripheral wall and the bottom wall of the sub-strainer member 50 maintain rigidity and prevent breakage, and a mesh portion (second mesh portion) 58 that allows oil to permeate into the oil tank while filtering impurities. And. This 2nd net-like part 58 is comprised by making a metal or a synthetic resin wire cross | intersect in the inclination direction.

  The frame 57 is arranged in the vertical direction of the main body 56 (from the opening to the bottom) at substantially the same interval connecting the two frames to the upper frame 57a formed in a cylindrical shape, the bottom frame 57b that defines the bottom wall. A plurality of vertical (direction) frames 57c, and one horizontal (direction) frame 57d that connects the vertical frames 57c in the circumferential direction at substantially the intermediate position thereof. In this case, as shown in FIG. 3, the bottom frame 57b is composed of a circular frame and a cross-shaped frame installed in the circular frame. The second mesh portion 58 is provided so as to cover the gap between the frames described above, and the frame and the second mesh portion form a peripheral wall and a bottom wall of the main body 56.

  The auxiliary strainer member 50 described above may be configured to be detachably attached to the main strainer member 5. In this embodiment, the auxiliary strainer member 50 is a peripheral wall portion (peripheral wall) of the main strainer member 5. It is configured to be able to be locked to the flange portion 7f) formed at the upper end of the.

  Specifically, a flange portion (engagement portion) 57f bulging radially outward is formed at the upper end opening position of the upper frame 57a, and the flange portion 57f allows the sub strainer member 50 to be connected to the main strainer. When inserted into the internal space of the member 5, it is engaged with and supported by the peripheral wall (opening or step inside the peripheral wall) of the main strainer member 5. That is, as shown in FIG. 2, the flange portion 57 f of the sub strainer member 50 is engaged with the peripheral edge portion (the above-described flange portion 7 f) of the opening of the main strainer member 5. In this case, a part of the flange portion 57f of the sub strainer member 50 is notched 57f ′ so that the stopper 10a of the float member 10 protruding from the opening 9a of the guide hole formed in the main strainer member 5 does not interfere. Is formed.

  In addition, the engagement between the main strainer member 5 and the sub strainer member 50 may be configured so that the sub strainer member can be easily mounted and pulled out. For example, a second embodiment to be described later. As described above, a step (locking portion) may be formed inside the peripheral wall of the main strainer member 5, and the flange portion 57f of the sub strainer member 50 may be engaged with this step. Alternatively, the configuration may be such that the sub-strainer member is dropped directly into the main strainer member 5 without forming the flange portion 57f. In this case, a gripping part for taking out may be formed on the auxiliary strainer member.

  Further, when the auxiliary strainer member 50 and the main strainer member 5 are mounted on the main strainer member 5, the auxiliary strainer member 50 and the main strainer member 5 have a gap G1 between the mesh portions on the peripheral walls and between the mesh portions on the bottom wall. , G2 are formed (some of them may be in contact with no gap).

  Furthermore, the first mesh portion 8 in the main strainer member 5 and the second mesh portion 58 in the sub strainer member 50 according to the present embodiment are shown in FIG. 2 when the sub strainer member 50 is mounted inside the main strainer member 5. As shown in the enlarged view of FIG. 3, the respective holes are positioned so as to be displaced. In this case, one of the vertical frames 57c (57c ′) of the auxiliary strainer member 50 is engaged with a bulging portion 7c ′ formed in the vertical frame having the guide hole 9 of the main strainer member 5, as shown in FIG. Both strainer members have a detent means comprising engaging portions that can be engaged with each other in the mounted state, and are positioned in the circumferential direction to be detented. As a result, wear and damage caused by the rotation of both strainer members are prevented, and the holes of the mesh portions of both are displaced.

  As shown in FIG. 2, the strainer 1 configured as described above has a stepped portion 102 in which the flange portion of the main strainer member 5 is formed in the oil supply port 101 of the oil tank 100 after removing the lid 110 of the oil tank. Is held so as not to fall into the oil tank. At this time, the collar portion of the main strainer member 5 is engaged with the collar portion of the sub strainer member 50, and the sub strainer member 50 is mounted inside the main strainer member 5. In this state, an oil supply hose (not shown) is inserted into the upper opening of the strainer to supply oil.

  The liquid level in the oil tank rises due to refueling. When the liquid level reaches the float 11 as shown in FIG. 4, the float member 10 rises with the buoyancy of the float 11. As a result, since the float member 10 also protrudes upward, the position of the protrusion amount is specified in advance (for example, a memory, color coding, etc. are provided around the shaft portion of the float member 10). It can be easily recognized that the amount of oil supply has reached a predetermined reference liquid level, and the end of refueling can be accurately grasped.

  In the strainer having the above-described configuration, during refueling, impurities that enter the oil tank 100 from the outside mainly accumulate in the second mesh portion 58 of the auxiliary strainer member 50 located inside. When performing a cleaning operation to remove impurities, the main strainer member 5 having the first mesh portion 8 is left attached to the fuel filler port 101, and the auxiliary strainer member 50 in which impurities are accumulated is removed alone. Therefore, it is possible to prevent dust and impurities from entering the oil tank during this operation.

  Further, as described above, the sub strainer member 50 mounted on the inner side of the main strainer member 5 is configured to be latched with respect to the peripheral wall of the main strainer member 5. That is, the sub-strainer member 50 is partly located in the vicinity of the opening of the main strainer member 5, such as in the vicinity of the opening, so that it can be easily pulled out from the inside of the main strainer member 5. Will be able to. Further, since the locking position is specified, it is possible to accurately maintain the gaps G1 and G2 between the first mesh portion 8 of the main strainer member 5 and the second mesh portion 58 of the sub strainer member 50. It becomes.

  When the auxiliary strainer member 50 is attached to the inner side of the main strainer member 5, the gaps G1 and G2 are formed between the first mesh portion 8 and the second mesh portion 58. The oil flow that has passed through the second mesh portion 58 of the 50 is weakened and wound in the gaps G1 and G2. Thereby, even if the impurities pass through the mesh of the second mesh portion 58 of the sub strainer member 50 due to the momentum of the oil, the impurities are easily captured by the first mesh member 8 of the main strainer member 5.

  Furthermore, when the sub-strainer member 50 is mounted inside the main strainer member 5, the holes of the first mesh portion 8 and the holes of the second mesh portion 58 that face each other are not aligned but shifted. Therefore, the impurities that have passed through the second mesh portion 58 can be prevented from passing through the first mesh portion 8 as they are, and the impurities can be easily captured by the first mesh portion 8 of the main strainer member 5.

  Next, another embodiment of the present invention will be described. In the following embodiments, the same components as those in the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIGS. 5 to 7 are views showing a second embodiment of the strainer according to the present invention, FIG. 5 is a view showing a state in which the auxiliary strainer member is removed from the main strainer member, and FIG. 6 is a view showing the main strainer member. FIG. 7 is a cross-sectional view taken along the line BB in FIG. 6.

  The strainer of the present embodiment is configured such that a stepped portion (locking portion) 60 is formed inside the peripheral wall of the main strainer member 5, and the flange portion 57f of the sub strainer member 50 is engaged with the stepped portion 60. ing. Even in such a configuration, the auxiliary strainer member 50 can be easily attached to and detached from the main strainer member 5.

  Further, in the present embodiment, the first mesh portion 8A of the main strainer member 5 is constituted by a mesh that intersects the horizontal direction and the vertical direction as shown in FIG. 5, and the second mesh portion 58A of the sub strainer member 50 is formed. Is formed of a mesh that intersects in a tilting direction. In such a configuration, as shown in FIGS. 6 and 7, the meshes of the opposing mesh portions 8A and 58A are shifted so as not to be surely matched. It is possible to reliably capture the first mesh portion 8A. Further, as described above, since the mesh directions are different, the auxiliary strainer member 50 is simply installed on the main strainer member 5 without positioning the main strainer member 5 and the auxiliary strainer member 50 in the circumferential direction. Thus, the opposite mesh can be surely shifted.

  FIGS. 8 to 10 are views showing a third embodiment of the strainer according to the present invention, FIG. 8 is a view showing a state in which the auxiliary strainer member is removed from the main strainer member, and FIG. 9 is a view showing the main strainer member. FIG. 10 is a cross-sectional view taken along line CC of FIG. 9.

  In the present embodiment, as shown in FIG. 8, the first mesh portion 8B of the main strainer member 5 is composed of a mesh that intersects the horizontal direction and the vertical direction, and the second mesh portion 58B of the sub strainer member 50 is It consists of a mesh that intersects in the same direction as the first mesh portion 8B. In this case, the mesh of the second mesh portion 58B is configured to be smaller than the mesh of the first mesh portion 8B, and as shown in FIGS. 9 and 10, the meshes of both mesh portions 8B and 58B facing each other match. Without being shifted. Further, since the mesh of the second mesh portion 58B is small, most of the impurities are captured by the second mesh portion 58B of the sub strainer member 50 before reaching the first mesh portion 8B of the main strainer member 5. Thus, the passage through the second mesh portion 58B is prevented.

  FIGS. 11 to 13 are views showing a fourth embodiment of the strainer according to the present invention, FIG. 11 is a view showing a state in which the auxiliary strainer member is removed from the main strainer member, and FIG. 12 is a view showing the main strainer member. FIG. 13 is a cross-sectional view taken along the line D-D in FIG. 12.

  The sub strainer member 50 in the present embodiment is configured by a net-like bag member having flexibility so that it can be easily deformed and folded. That is, as shown in FIG. 11, the second net-like portion 58 </ b> C formed in a bag shape is attached to the substantially circular frame body 70 so as to hang down, and is attached to the frame body 70 on the inner peripheral wall of the main strainer member 5. A flange portion (engaging portion) 71 protruding outward is formed so as to be engageable with the formed step portion (locking portion) 60.

  In this case, the first mesh portion 8A of the main strainer member 5 and the second mesh portion 58C of the sub strainer member 50 are respectively meshed in the horizontal and vertical directions and in the inclined direction, as in the second embodiment. The meshes that are opposed to each other are configured so that they do not match when the auxiliary strainer member 50 is installed.

  Even in such a configuration, the same effect as the above-described embodiment can be obtained, and the configuration of the auxiliary strainer member 50 can be simplified. Further, with respect to the auxiliary strainer member 50, it is possible to prevent the meshes of both mesh portions from matching with each other without providing a circumferential detent with respect to the main strainer member 5. In such an embodiment, the second mesh portion 58C may be configured to be replaceable with respect to the frame body 70, and the used mesh portion 58C can be folded and easily disposed.

  As mentioned above, although embodiment of this invention was described, the strainer which concerns on this invention is not limited to the structure shown in figure, It can change variously.

  For example, as long as the main strainer member 5 is attached to the oil supply port 101 of the oil tank 100 and the auxiliary strainer member 50 can be detachably installed on the inside thereof, the shape of each strainer member, the frame body and the net shape The arrangement configuration of the parts can be modified as appropriate.

  Further, the net-like portion attached to each strainer member is not limited to the net. That is, any structure that allows oil to pass through and capture impurities can be used. As shown in FIG. These holes may be formed, and this is also a mesh portion. Further, the size and shape of the hole can be modified as appropriate. In this case, the meshes of the first mesh portion and the second mesh portion may partially match in plan view, but are installed so that they do not exactly match as in the above-described embodiment. It is preferable.

  Furthermore, the float member is not limited to the configuration shown in the figure, and may be appropriately selected as long as it is configured so that the oil level can be visually confirmed at the time of refueling. It is possible to deform.

It is a figure which shows 1st Embodiment of the strainer which concerns on this invention, and is a figure which shows the state which removed the sub strainer member from the main strainer member. The figure which shows the state which mounted | wore the main strainer member with the sub strainer member. Sectional drawing along the AA line of FIG. The figure explaining the effect | action of the float member when refueling. It is a figure which shows 2nd Embodiment of the strainer which concerns on this invention, and is a figure which shows the state which removed the sub strainer member from the main strainer member. The figure which shows the state which mounted | wore the main strainer member with the sub strainer member. Sectional drawing along the BB line of FIG. It is a figure which shows 3rd Embodiment of the strainer which concerns on this invention, and is a figure which shows the state which removed the sub strainer member from the main strainer member. The figure which shows the state which mounted | wore the main strainer member with the sub strainer member. Sectional drawing along CC line of FIG. It is a figure which shows 4th Embodiment of the strainer which concerns on this invention, and is a figure which shows the state which removed the sub strainer member from the main strainer member. The figure which shows the state which mounted | wore the main strainer member with the sub strainer member. Sectional drawing along the DD line | wire of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Strainer for oil supply port 5 Main strainer member 8,8A, 8B 1st mesh part 10 Float member 50 Sub strainer member 58,58A, 58B, 58C 2nd mesh part 100 Oil tank 101 Oil supply port

Claims (5)

A main strainer member attached to the oil filler opening and having a first mesh part for filtering impurities;
A secondary strainer member that is detachably attached to the inside of the main strainer member and has a second mesh portion for filtering impurities;
A fuel filler strainer, comprising:   2. The strainer for an oil filler opening according to claim 1, wherein the auxiliary strainer member can be locked to a peripheral wall of the main strainer member.   3. A fuel filler strainer according to claim 1, wherein a gap is formed between the first mesh portion and the second mesh portion when a sub strainer member is mounted inside the main strainer member. .   The hole of the 1st net-like part and the hole of the 2nd net-like part which counter when the sub strainer member was equipped inside the said main strainer member have shifted in any 1 paragraph of Claims 1 thru / or 3 characterized by the above-mentioned. Filler port strainer as described.   5. The strainer for an oil filler opening according to claim 1, wherein the hole of the second mesh portion is smaller than the hole of the first mesh portion.

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