JP2020138263A - Detachable tool of oil filter case - Google Patents

Abstract

To provide a detachable tool of an oil filter case capable of smoothly detaching the oil filter case even when oil leakage occurs.SOLUTION: A detachable tool of an oil filter case includes a tool main body 10 having a space part 13 formed by an annular lateral wall part 11 and a bottom part 12 continuing to the lateral wall part 11, a plurality of engagement surfaces 21, 31, 41 which are formed on a portion of the space part 13 side on the lateral wall part 11 and are engaged with at least a part of a corner part 101 of an oil filter case 100, a plurality of groove parts 22, 32, 42 which are provided among the engagement surfaces 21, 31, 41 adjacent to each other in a circumferential direction of the lateral wall part 11 and are recessed toward the counter space part 13 side with respect to the engagement surfaces 21, 31, 41, a pore part 50 provided on the bottom part 12 and a container 70 which has a storage part 71 communicated with the space part 13 by the pore part 50 and is bonded with the tool main body 10.SELECTED DRAWING: Figure 3

Description

The present invention belongs to the technical field relating to the attachment / detachment tool used when attaching / detaching the oil filter case.

Conventionally, tools for attaching and detaching an oil filter case have been known.

Patent Document 1 has a space portion formed from a bottom portion and a side wall, conical protrusions are formed in an annular shape on the inner surface of the bottom portion, discharge holes are formed in the bottom portion, and discharge is performed on the outer surface of the bottom portion. A detachable tool in which an oil drain pipe communicating with a hole is vertically provided is disclosed.

Jikkai Sho 59-86976 Gazette

By the way, when the oil filter case is removed from the oil storage part (oil pan, etc.), oil may leak.

The attachment / detachment tool described in Patent Document 1 suppresses the leaked oil from adhering to the operator by catching the leaked oil in the space portion when the oil filter case is removed from the storage portion. Further, the attachment / detachment tool described in Patent Document 1 holds the oil filter case between protrusions provided on the bottom so that the oil filter case can be rotated in the detaching direction.

However, the attachment / detachment tool described in Patent Document 1 has a small contact area between the oil filter case and the protrusion. Therefore, if an oil leak occurs during the removal of the oil filter case, oil will enter between the oil filter case and the protrusion, and the protrusion will slip. This makes it difficult to remove the oil filter case with the attachment / detachment tool.

The present invention has been made in view of these respects, and an object of the present invention is to provide a tool for attaching and detaching an oil filter case capable of smoothly removing the oil filter case even when an oil leak occurs. There is.

In order to solve the above problems, the present invention provides an annular side wall portion for an oil filter case attachment / detachment tool having a cross section attached to an oil storage portion via a connection portion and having a plurality of corner portions formed therein. A tool body having a space portion formed by the side wall portion and a bottom portion continuous with the side wall portion, and a plurality of engagements formed in the space portion side portion of the side wall portion and engaged with at least a part of the plurality of corner portions. A plurality of grooves provided between the mating surface and the engaging surface in the circumferential direction and recessed toward the anti-space portion side from the engaging surface, a hole provided in the bottom portion, and the hole portion. The oil filter case rotates in a state where it has a housing portion that communicates with the space portion, has a container coupled to the tool body, and the corner portions and the engaging surfaces are engaged with each other. Then, the oil filter case is attached and detached.

According to this configuration, if an oil leak occurs while removing the oil filter case, the oil enters the space and flows down along the groove. Even at this time, the engaging surface of the attachment / detachment tool is maintained in a state of being engaged with the corners of the oil filter case. Therefore, even if an oil leak occurs, the oil filter case can be smoothly removed.

Further, the oil that has flowed down along the groove flows to the accommodating portion through the hole portion. This makes it possible to recover the leaked oil.

In the oil filter case attachment / detachment tool, the three grooves that are continuously arranged in the circumferential direction among the plurality of grooves are, in order, the first groove, the second groove, and the third groove, the first groove and the first groove. The circumferential distance between the two grooves and the circumferential distance between the second groove and the third groove may be different.

According to this configuration, the arrangement in the circumferential direction of each engaging surface and the arrangement in the circumferential direction of each groove portion are different. This appropriately prevents the corners of the oil filter case from accidentally engaging with the grooves. As a result, the oil filter case can be removed more smoothly.

In the oil filter case attachment / detachment tool, an annular saucer portion that is continuous with the side wall portion and has a larger cross-sectional area than the oil filter case is provided at the end portion of the tool body on the anti-container side. The plurality of grooves may be continuous with the portion of the saucer on the space side.

According to this configuration, the oil leaked during the detachment of the oil filter case is temporarily received by the saucer portion. Since the saucer portion is continuous with the groove portion, the oil flows down from the saucer portion along the groove portion. As a result, it is possible to appropriately prevent oil from entering between the engaging surface and the corner portion. As a result, the oil filter case can be removed more smoothly.

In the oil filter case attachment / detachment tool, an inclined surface inclined toward the container side in the ring axis direction toward the hole portion is formed in a portion of the bottom portion between the side wall portion and the hole portion. , May be the configuration.

According to this configuration, the oil that has flowed down along the groove and reached the bottom tends to flow toward the hole. This facilitates the recovery of leaked oil.

In the oil filter case attachment / detachment tool, the groove width of each groove portion may be 35% to 45% of the length of each engagement surface in the circumferential direction.

According to this configuration, the oil easily flows through the groove. This facilitates the recovery of leaked oil.

In the oil filter case attachment / detachment tool, the side wall portion has a plurality of stages so that the cross-sectional area of the space portion becomes smaller toward the bottom side in the ring axis direction, and each groove portion is specific. In a state where the side wall portion of the step and the oil filter case are engaged, the groove portion provided in the side wall portion of the specific step may be configured to communicate in the ring axis direction.

That is, the oil filter case has various sizes depending on the standard. Therefore, if the configuration is a plurality of stages as in the above configuration, it is possible to support oil filter cases of various standards. As a result, the oil filter case can be removed more smoothly.

In the oil filter case attachment / detachment tool, the container may be detachably connected to the tool body.

This configuration facilitates disposal and reuse of the recovered oil.

As described above, according to the oil filter case attachment / detachment tool according to the present invention, the oil filter case can be smoothly removed even if an oil leak occurs during the removal of the oil filter case.

It is a front view which shows the attachment / detachment tool of the oil filter case which concerns on Embodiment 1. FIG. It is the schematic which shows the oil filter case which is removed using the attachment / detachment tool. It is sectional drawing of the tool body. It is the figure which looked at the tool body from the ring axis direction. It is an enlarged view which shows the engagement state of a tool body and an oil filter case. It is a figure which shows the process of removing an oil filter case using a detachable tool. It is an enlarged view around the tool body in FIG. It is a front view which shows the modification of the attachment / detachment tool. It is sectional drawing of the tool body of the attachment / detachment tool which concerns on Embodiment 2. FIG. It is a figure which saw the tool body of the attachment / detachment tool which concerns on Embodiment 2 from the ring axis direction. It is sectional drawing of the tool body of the detachable tool which concerns on Embodiment 3. FIG. It is a figure which saw the tool body of the attachment / detachment tool which concerns on Embodiment 3 from the ring axis direction. It is a side view of the tool body of the attachment / detachment tool which concerns on Embodiment 4. FIG. It is sectional drawing of the tool body of the attachment / detachment tool which concerns on Embodiment 4. FIG. It is a figure which saw the tool body of the attachment / detachment tool which concerns on Embodiment 4 from the ring axis direction. FIG. 5 is an enlarged cross-sectional view of a tool body of the attachment / detachment tool according to the fourth embodiment, showing a state in which the tool body is fitted in an oil filter case.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 shows the attachment / detachment tool 1 according to the first embodiment, and FIG. 2 shows an oil filter case 100 that can be removed using the attachment / detachment tool 1. As shown in FIG. 2, the oil filter case 100 covers an oil filter attached to an oil pan P (oil storage portion) of an internal combustion engine. The oil filter case 100 has a bottomed cylindrical shape. The oil filter case 100 has a plurality of corner portions 101 arranged in the circumferential direction at a portion of the peripheral surface portion near the bottom. That is, the oil filter case 100 has a cross section in which a plurality of corner portions 101 are formed.

As shown in FIG. 1, the detachable tool 1 includes a tool main body 10 and a container 50 coupled to the tool main body 10. In the first embodiment, the tool body 10 and the container 70 are detachably connected to each other.

As shown in FIGS. 3 and 4, the tool body 10 has a space portion 13 formed by an annular side wall portion 11 and a bottom portion 12 continuous with the side wall portion 11. The tool body 11 is open on the side opposite to the bottom portion 12 in the extending direction of the ring axis X (hereinafter referred to as the ring axis direction). The tool body 10 is made of resin.

As shown in FIGS. 1 and 3, the side wall portion 11 has a stepwise reduced diameter from the opening side of the tool body 10 toward the bottom 1 side. Specifically, the side wall portion 11 has a plurality of stages (here, three stages) such that the cross-sectional area of the space portion 13 becomes smaller toward the bottom portion 12 side in the ring axis direction. In the following description, each step portion of the side wall portion 11 is referred to as an upper step portion 20, a middle step portion 30, and a lower step portion 40 from the opening side to the bottom 12 side.

The upper portion 20 is a portion having the largest cross-sectional area. A plurality of upper engagement surfaces 21 that engage with at least a part of the plurality of corner portions 101 are formed side by side in the circumferential direction in the portion of the upper portion 20 on the space portion 13 side. A corner portion is formed between the two upper engagement surfaces 21 that are adjacent to each other in the circumferential direction, and the cross-sectional shape of the upper portion 20 is substantially polygonal. As shown in FIGS. 3 and 4, a plurality of upper groove portions 22 recessed from the upper engaging surface 21 toward the anti-space portion 13 side are formed between the circumferential directions of each upper engaging surface 21. Has been done. In particular, in the first embodiment, the upper groove portion 22 is provided at an intermediate portion in the circumferential direction of the upper engaging surface 21. Each upper groove portion 22 extends over the entire upper engaging surface 21 in the ring axis direction. The groove width W11 of the upper groove portion 22 is about 39% of the surface width W12 (width in the circumferential direction) of the upper engaging surface 21. The ratio of the groove width W11 of the upper groove portion 22 to the surface width W12 of the upper engaging surface 21 can be arbitrarily set as long as it is 35% to 45%.

As shown in FIG. 4, the three upper groove portions 22 arranged continuously in the circumferential direction have the three upper groove portions 22 in the circumferential direction in order of the first upper groove portion 22a, the second upper groove portion 22b, and the third upper groove portion 22. The groove portions 22c are arranged so that the circumferential distance between the first upper groove portion 22a and the second upper groove portion 22b and the circumferential distance between the second upper groove portion 22b and the third upper groove portion 22c are different. I'm out. For example, in FIG. 4, in the first to third upper groove portions 22a to 22c, the distance L1 in the circumferential direction between the first upper groove portion 22a and the second upper groove portion 22b is the second upper groove portion 22b and the third upper groove portion 22b. They are lined up so as to be longer than the circumferential distance L2 from 22c.

As shown in FIG. 3, at the boundary between the upper portion 20 and the middle portion 30, a radius is formed in each upper groove portion 22. This radius has a radius of curvature larger than the radius between the side surface and the bottom surface of the oil filter case 100.

The middle portion 30 is a portion having a cross-sectional area smaller than that of the upper portion 20 and larger than that of the lower portion 40. Similar to the upper portion 20, a plurality of middle-stage engaging surfaces 31 that engage with at least a part of the plurality of corner portions 101 are formed side by side in the circumferential direction in the portion of the middle-stage portion 30 on the space portion 13 side as well. .. Further, a plurality of middle-stage groove portions 32 recessed from the middle-stage engaging surface 31 toward the anti-space portion 13 side are formed between the middle-stage engaging surfaces 31, respectively, as in the upper-stage portion 20. In particular, in the first embodiment, the middle groove portion 32 is provided in the intermediate portion of the middle engaging surface 31. Each middle stage groove portion 32 extends over the entire middle stage engaging surface 31 in the ring axis direction. The ratio of the groove width of the middle groove portion 32 to the surface width of the middle engagement surface 31 is 42%. The ratio can be arbitrarily set as long as it is 35% to 45%.

As shown in FIG. 4, the arrangement of the middle groove portions 32 in the circumferential direction is the same as that of the upper groove portion 22, and the three middle groove portions 32 arranged continuously in the circumferential direction have the three middle groove portions 32 arranged in the circumferential direction. As the first middle stage groove portion 32a, the second middle stage groove portion 32b, and the third middle stage groove portion 32c, the distance between the first middle stage groove portion 32a and the second middle stage groove portion 32b in the circumferential direction, and the second middle stage groove portion 32b and the second middle stage groove portion 32b are in order. 3 The distances in the circumferential direction from the middle groove portion 32c are different from each other.

At the boundary between the middle portion 30 and the lower portion 40, a radius is formed in each middle groove portion 32 as in the upper groove portion 22. This radius has a radius of curvature larger than the radius between the side surface and the bottom surface of the oil filter case 100.

The lower portion 40 is a portion having the smallest cross-sectional area. Similar to the upper portion 20 and the middle portion 30, a plurality of lower engagement surfaces 41 that engage with at least a part of the plurality of corner portions 101 are arranged in the circumferential direction in the portion of the lower portion 40 on the space portion 13 side. It is formed. Further, between the lower engaging surfaces 41, a plurality of lower groove portions 42 recessed from the lower engaging surface 41 toward the anti-space portion side are formed, as in the upper portion 20 and the middle portion 30. ing. In particular, in the first embodiment, the lower groove portion 42 is provided in the intermediate portion of the lower engaging surface 41. Each lower groove portion 42 extends over the entire lower engagement surface 41 in the ring axis direction. The ratio of the groove width of the lower groove portion 42 to the surface width of the lower engaging surface 41 is 42%. The ratio can be arbitrarily set as long as it is 35% to 45%.

As shown in FIG. 4, the arrangement of the lower groove portions 42 in the circumferential direction is the same as that of the upper groove portion 22 and the middle groove portion 32, and the three lower groove portions 42 arranged continuously in the circumferential direction form the three lower groove portions 42. As the first lower groove portion 42a, the second lower groove portion 42b, and the third lower groove portion 42c, the distance in the circumferential direction between the first lower groove portion 42a and the second lower groove portion 42b and the second lower stage The grooves 42b and the third lower groove 42c are arranged so that the distance in the circumferential direction is different.

At the boundary between the lower portion 30 and the bottom portion 12, a radius is formed in each lower groove portion 42 as in the upper groove portion 22 and the middle groove portion 32. This radius has a radius of curvature larger than the radius between the side surface and the bottom surface of the oil filter case 100.

FIG. 5 shows the engagement state between the tool body 10 and the oil filter case 100. As shown in FIG. 5, when the oil filter case 100 is removed from the oil pan P by the tool body 10, the engaging surfaces 21, 31, 41 of the corresponding step portions 20, 30, 40 and the corner portions 101 of the oil filter case 100 are used. And contact in a state close to surface contact. Then, a force is transmitted from the engaging surfaces 21, 31, and 41 to the oil filter case 100, and the oil filter case 100 rotates.

The end of the tool body 10 opposite to the container 70, specifically, the portion on the opposite bottom 12 side of the upper portion 20 in the ring axis direction, is continuous with the side wall portion 11 and larger than the oil filter case 100. An annular saucer portion 14 having a cross-sectional area is provided. The plurality of upper groove portions 22 of the upper portion 20 are continuous with the portion of the saucer portion 14 on the space portion 13 side.

The bottom portion 12 has a hole portion 50 in the center in the radial direction. The hole portion 50 communicates the space portion 13 with the accommodating portion 71 of the container 70.

As shown in FIG. 3, an inclined surface 51 inclined toward the container 70 in the ring axis direction toward the hole 50 is formed in a portion of the bottom 12 between the side wall portion 11 and the hole 50.

As shown in FIG. 3, a screw portion 15 on which the container 70 is screwed is formed on the antispace portion 13 side with respect to the bottom portion 12 of the tool body 10. The container 70 is detachably connected to the tool body 10 via the screw portion 15.

In order to remove the oil filter case 100 from the oil pan P by the attachment / detachment tool 1 according to the first embodiment, first, as shown in FIG. 6, the oil filter case 100 is housed in the space 13 of the tool body 10. As described above, the tool body 10 is fitted to the outside of the oil filter case 100. Next, the engaging surface of the tool body 10 (here, the middle engaging surface 31) is engaged with the corner portion 101 of the oil filter case 100. After that, the oil filter case 100 is removed from the oil pan P by rotating the tool body 10 together with the container 70. In the present embodiment, the oil filter case 100 is removed from the oil pan P together with the oil filter body.

Here, when the oil filter case 100 is removed from the oil pan P, oil may leak from the gap between the oil filter case 100 and the oil pan P. On the other hand, according to the attachment / detachment tool 1 described in the first embodiment, as shown in FIG. 7, when an oil leak occurs during the removal of the oil filter case 100, the oil enters the space 13 and enters the space 13. It flows down along the groove (here, the middle groove 32). That is, since each of the plurality of grooves formed in the side wall portion 11 is recessed toward the anti-space portion 13 side from the engaging surface, the engaging surface and the corner portion 101 are formed as shown in FIG. In the engaged state, a gap is formed in each groove portion. Further, even when the engaging surface and the corner portion 101 are engaged with each other due to the radius formed in the groove portion, the groove portion is in a state of communicating in the ring axis direction. As a result, the oil that has flowed into the groove flows down to the bottom 12 through the groove, and then flows down to the accommodating portion 71 of the container 70 through the hole 50.

At this time, as shown by the black arrow in FIG. 3, the oil may flow down through the groove portions 22, 32, 42, or after passing through one groove portion (upper groove portion 22 in FIG. 3), the oil is engaged. It may flow down along the engaging surfaces that are not engaged (the middle engaging surface 31 and the lower engaging surface 41 in FIG. 3).

On the other hand, it is difficult for oil to enter between the engaging surface of the attachment / detachment tool 1 (here, the middle engaging surface 31) and the corner portion 101 of the oil filter case 100. As a result, each engaging surface of the attachment / detachment tool 1 and each corner portion 101 of the oil filter case 100 are maintained in an engaged state.

Similarly, when the oil filter case 100 engages with other stages (upper stage 20 and lower stage 40), the oil also flows along the corresponding groove, flows down to the bottom 12, and then passes through the hole 50. It flows down to the accommodating portion 71 of the container 70 through the container 70.

As a result, even if an oil leak occurs, the oil filter case 100 can be smoothly removed.

Further, in the first embodiment, the three groove portions that are continuously arranged in the circumferential direction among the plurality of groove portions are, in order, the first groove portion, the second groove portion, and the third groove portion, the first groove portion and the second groove portion. The circumferential distance between them is different from the circumferential distance between the second groove and the third groove. As a result, the arrangement in the circumferential direction of each engaging surface and the arrangement in the circumferential direction of each groove portion become different. As a result, it is appropriately suppressed that the corner portion 101 of the oil filter case 100 is erroneously engaged with the groove portion. As a result, the oil filter case 100 can be removed more smoothly.

Further, in the first embodiment, an annular saucer portion 14 that is continuous with the upper portion 20 and has a larger cross-sectional area than the oil filter case 100 is provided at the end portion of the tool body 10 on the side opposite to the container 70. The plurality of upper groove portions 22 are continuous with the portion of the saucer portion 14 on the space portion 13 side. As a result, even if the oil filter case 100 engages with the upper portion 20, the oil leaking from between the oil filter case 100 and the oil pan P is received by the saucer portion 14, and the saucer portion 14 to the upper groove portion 22. It runs down along. As a result, it is possible to appropriately prevent oil from entering between the upper engaging surface 21 and the corner portion 101. As a result, the oil filter case 100 can be removed more smoothly.

Further, in the first embodiment, an inclined surface 51 inclined toward the container 70 in the ring axis direction toward the hole 50 is formed in the portion between the side wall portion 11 and the hole 50 in the bottom portion 12. .. As a result, the oil that has flowed down along the grooves 22, 32, and 42 and has reached the bottom 12 can easily flow toward the holes 50. This facilitates the recovery of leaked oil.

Further, in the first embodiment, the groove width of each groove portion is 35% to 45% of the length in the circumferential direction of each engaging surface. This makes it easier for the oil to flow through the groove. As a result, the leaked oil can be easily recovered.

Further, in the first embodiment, the side wall portion 11 has a plurality of stages so that the cross-sectional area of the space portion 13 decreases toward the bottom portion 12 side in the ring axis direction, and the groove portions 22, 32, and 42 have a plurality of stages. In a state where the side wall portion 11 of the specific step and the oil filter case 100 are engaged, the groove portions 22, 32, 42 provided in the side wall portion 11 of the specific step are configured to communicate with each other in the ring axis direction. There is. If it has a multi-stage configuration like this configuration, it can correspond to the oil filter case 100 of various standards. As a result, the oil filter case 100 can be removed more smoothly.

Further, in the first embodiment, the container 70 is detachably connected to the tool body 10. This facilitates the disposal and reuse of the recovered oil.

FIG. 8 shows a modification of the attachment / detachment tool 1 according to the first embodiment. In this modification, the tool body 10 and the container 70 are integrally connected. Although detailed illustration is omitted, the configuration of the side wall portion 11 is the same as that of the side wall portion of the first embodiment. Even in this modified example, even if an oil leak occurs, the oil filter case 100 can be smoothly removed.

Further, in this modification, since the tool body 10 and the container 70 are integrated, the strength of the attachment / detachment tool 1 can be improved. Further, when rotating the oil filter case 100 in a state where the engaging surface of the tool body 10 and the corner portion 101 of the oil filter case 100 are engaged, it is easy to rotate the oil filter case 100 together with the container 70. Therefore, the oil filter case 100 can be removed more smoothly.

(Embodiment 2)
Hereinafter, the second embodiment will be described in detail with reference to the drawings. In the following description, the parts common to the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 9 and 10, in the second embodiment, in the tool body 210, the groove portions 222, 232, 242 formed in the step portions 20, 30 and 40 are arranged evenly in the circumferential direction. This is different from the first embodiment. Also in the second embodiment, the corner portions 101 of the oil filter case 100 and the engaging surfaces 21, 31, and 41 are engaged with each other, and the corresponding groove portions 222, 232 and 242 are in a state of communicating with each other in the ring axis direction. .. As a result, even if an oil leak occurs when the oil filter case 100 is removed from the oil pan P, the leaked oil flows down to the bottom 12 through the grooves 222, 232 and 242, and then the hole 50 is opened. It flows down to the accommodating portion 71 of the container 70 through the container 70. On the other hand, it is difficult for oil to enter between the engaging surfaces 21, 31, 41 of the attachment / detachment tool 1 and the corner 101 of the oil filter case 100.

Therefore, according to the attachment / detachment tool 201 according to the second embodiment, the oil filter case 100 can be smoothly removed even when an oil leak occurs.

(Embodiment 3)
Hereinafter, the third embodiment will be described in detail with reference to the drawings. In the following description, the parts common to the first and second embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 11 and 12, in the third embodiment, in the tool body 310, each groove portion 322, 332, 342 is not formed in the intermediate portion of the corresponding engaging surfaces 321, 331, 341. , It is different from the first and second embodiments in that it is provided between the engaging surfaces 321 and 331 and 341 which are adjacent to each other in the circumferential direction. More specifically, in the third embodiment, the engaging surfaces 321 and 331, 341 are not provided in the portions where the groove portions 322, 332 and 342 are provided. Further, the groove widths of the groove portions 322, 332 and 342 are larger than those of the first and second embodiments.

Also in the third embodiment, in the state where the corners 101 of the oil filter case 100 and the engaging surfaces 321 and 331, 341 are engaged, the corresponding groove portions 322, 332 and 342 are in a state of communicating with each other in the ring axis direction. .. As a result, even if an oil leak occurs when the oil filter case 100 is removed from the oil pan P, the leaked oil flows down to the bottom 12 through the groove 322, 332, 342, and then the hole 50 is opened. It flows down to the accommodating portion 71 of the container 70 through the container 70. On the other hand, it is difficult for oil to enter between the engaging surfaces 321 and 331, 341 of the attachment / detachment tool 1 and the corners 101 of the oil filter case 100.

Therefore, according to the attachment / detachment tool 301 according to the third embodiment, the oil filter case 100 can be smoothly removed even when an oil leak occurs.

(Embodiment 4)
Hereinafter, the fourth embodiment will be described in detail with reference to the drawings. In the following description, the parts common to the first to third embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 13 and 15, in the present embodiment 4, in the tool body 410, the surface portion of the side wall portion 411 opposite to the space portion 13 (hereinafter referred to as the outer side wall surface portion 411a) is the space in the side wall portion 411. It differs from the first to third embodiments in that it corresponds to the shape of the surface portion of the portion 13. Further, as shown in FIGS. 14 to 16, the bottom portion 412 is different from the first to third embodiments in that ribs 443 are provided at the positions of the lower groove portions 442 of the lower portion 40.

As shown in FIG. 13, the outer side wall surface portion 411a has a flat portion corresponding to the engaging surface 421, 431, 441, while the portion corresponding to the groove portion 422, 432, 442 is the anti-space portion 13. It bulges toward the side. With such a shape, the thickness of the side wall portion 411 can be made uniform as a whole. As a result, it is possible to prevent sink marks from occurring when the tool body 410 is manufactured. Further, since the outer side wall surface portion 411a is formed with irregularities, the tool body 410 can be easily grasped, and the work of removing the oil filter case 100 becomes easier.

As shown in FIGS. 14 and 15, the ribs 443 extend from both ends of the lower groove portion 442 in the circumferential direction toward the hole portion 50, respectively. As shown in FIG. 16, the rib 443 is used to remove the oil filter case 100 having a size that engages with the lower engaging surface 441, even if the tool body 410 is pressed against the oil filter case 100. A gap will be created between the 100 and the bottom 12. This makes it easier for the leaked oil to flow toward the hole 50.

Therefore, according to the attachment / detachment tool 401 according to the fourth embodiment, the oil filter case 100 can be removed more smoothly even when an oil leak occurs.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and can be substituted within a range that does not deviate from the gist of the claims.

For example, in the above-described first to fourth embodiments, the side wall portion 11 has a three-stage configuration, but the present invention is not limited to this, and the configuration may be four or more stages or two or less stages.

Further, also in the above-described embodiments 2 to 4, the tool bodies 210 and 310 and the container 70 may be integrally connected.

Further, also in the above-described first to third embodiments, the rib may be provided on the bottom portion 12 as in the above-described fourth embodiment.

The above embodiments are merely examples, and the scope of the present invention should not be construed in a limited manner. The scope of the present invention is defined by the scope of claims, and all modifications and modifications belonging to the equivalent scope of the claims are within the scope of the present invention.

The present invention is useful as a tool for attaching / detaching an oil filter case which is attached to an oil storage portion via a connecting portion and has a cross section in which a plurality of corner portions are formed.

1,201,301,401 Detachable tool 10,210,310,410 Tool body 11 Side wall part 12 Bottom part 13 Space part 14 Recipient part 21,321,421 Upper engagement surface 22,222,322,422 Upper groove part 31,331 , 431 Middle engagement surface 32,232,332,432 Middle groove 41,341,441 Lower engagement surface 42,242,342,442 Lower groove 50 Hole 51 Inclined surface 70 Container 71 Storage 100 Oil filter case

The present invention belongs to the technical field relating to the attachment / detachment tool used when attaching / detaching the oil filter case.

Conventionally, tools for attaching and detaching an oil filter case have been known.

Patent Document 1 has a space portion formed from a bottom portion and a side wall, conical protrusions are formed in an annular shape on the inner surface of the bottom portion, discharge holes are formed in the bottom portion, and discharge is performed on the outer surface of the bottom portion. A detachable tool in which an oil drain pipe communicating with a hole is vertically provided is disclosed.

Jikkai Sho 59-86976 Gazette

By the way, when the oil filter case is removed from the oil storage part (oil pan, etc.), oil may leak.

The attachment / detachment tool described in Patent Document 1 suppresses the leaked oil from adhering to the operator by catching the leaked oil in the space portion when the oil filter case is removed from the storage portion. Further, the attachment / detachment tool described in Patent Document 1 holds the oil filter case between protrusions provided on the bottom so that the oil filter case can be rotated in the detaching direction.

However, the attachment / detachment tool described in Patent Document 1 has a small contact area between the oil filter case and the protrusion. Therefore, if an oil leak occurs during the removal of the oil filter case, oil will enter between the oil filter case and the protrusion, and the protrusion will slip. This makes it difficult to remove the oil filter case with the attachment / detachment tool.

The present invention has been made in view of these respects, and an object of the present invention is to provide a tool for attaching and detaching an oil filter case capable of smoothly removing the oil filter case even when an oil leak occurs. There is.

In order to solve the above problems, the present invention provides an annular side wall portion for an oil filter case attachment / detachment tool having a cross section attached to an oil storage portion via a connection portion and having a plurality of corner portions formed therein. A tool body having a space portion formed by the side wall portion and a bottom portion continuous with the side wall portion, and a plurality of engagements formed in the space portion side portion of the side wall portion and engaged with at least a part of the plurality of corner portions. A plurality of grooves provided between the mating surface and the engaging surface in the circumferential direction and recessed toward the anti-space portion side from the engaging surface, a hole provided in the bottom portion, and the hole portion. It has an accommodating portion that communicates with the space portion, and includes a container coupled to the tool body. The inner dimension of the container is larger than the inner dimension of the hole portion, and each corner portion and each engagement portion are provided. The oil filter case is rotated to attach and detach the oil filter case while the mating surfaces are engaged with each other.

According to this configuration, if an oil leak occurs while removing the oil filter case, the oil enters the space and flows down along the groove. Even at this time, the engaging surface of the attachment / detachment tool is maintained in a state of being engaged with the corners of the oil filter case. Therefore, even if an oil leak occurs, the oil filter case can be smoothly removed.

Further, the oil that has flowed down along the groove flows to the accommodating portion through the hole portion. This makes it possible to recover the leaked oil.

In the oil filter case attachment / detachment tool, the three grooves that are continuously arranged in the circumferential direction among the plurality of grooves are, in order, the first groove, the second groove, and the third groove, the first groove and the first groove. The circumferential distance between the two grooves and the circumferential distance between the second groove and the third groove may be different.

According to this configuration, the arrangement in the circumferential direction of each engaging surface and the arrangement in the circumferential direction of each groove portion are different. This appropriately prevents the corners of the oil filter case from accidentally engaging with the grooves. As a result, the oil filter case can be removed more smoothly.

In the oil filter case attachment / detachment tool, an annular saucer portion that is continuous with the side wall portion and has a larger cross-sectional area than the oil filter case is provided at the end portion of the tool body on the anti-container side. The plurality of grooves may be continuous with the portion of the saucer on the space side.

According to this configuration, the oil leaked during the detachment of the oil filter case is temporarily received by the saucer portion. Since the saucer portion is continuous with the groove portion, the oil flows down from the saucer portion along the groove portion. As a result, it is possible to appropriately prevent oil from entering between the engaging surface and the corner portion. As a result, the oil filter case can be removed more smoothly.

In the oil filter case attachment / detachment tool, an inclined surface inclined toward the container side in the ring axis direction toward the hole portion is formed in a portion of the bottom portion between the side wall portion and the hole portion. , May be the configuration.

According to this configuration, the oil that has flowed down along the groove and reached the bottom tends to flow toward the hole. This facilitates the recovery of leaked oil.

In the oil filter case attachment / detachment tool, the groove width of each groove portion may be 35% to 45% of the length of each engagement surface in the circumferential direction.

According to this configuration, the oil easily flows through the groove. This facilitates the recovery of leaked oil.

In the oil filter case attachment / detachment tool, the side wall portion has a plurality of stages so that the cross-sectional area of the space portion becomes smaller toward the bottom side in the ring axis direction, and each groove portion is specific. In a state where the side wall portion of the step and the oil filter case are engaged, the groove portion provided in the side wall portion of the specific step may be configured to communicate in the ring axis direction.

That is, the oil filter case has various sizes depending on the standard. Therefore, if the configuration is a plurality of stages as in the above configuration, it is possible to support oil filter cases of various standards. As a result, the oil filter case can be removed more smoothly.

In the oil filter case attachment / detachment tool, the container may be detachably connected to the tool body.

This configuration facilitates disposal and reuse of the recovered oil.

As described above, according to the oil filter case attachment / detachment tool according to the present invention, the oil filter case can be smoothly removed even if an oil leak occurs during the removal of the oil filter case.

It is a front view which shows the attachment / detachment tool of the oil filter case which concerns on Embodiment 1. FIG. It is the schematic which shows the oil filter case which is removed using the attachment / detachment tool. It is sectional drawing of the tool body. It is the figure which looked at the tool body from the ring axis direction. It is an enlarged view which shows the engagement state of a tool body and an oil filter case. It is a figure which shows the process of removing an oil filter case using a detachable tool. It is an enlarged view around the tool body in FIG. It is a front view which shows the modification of the attachment / detachment tool. It is sectional drawing of the tool body of the attachment / detachment tool which concerns on Embodiment 2. FIG. It is a figure which saw the tool body of the attachment / detachment tool which concerns on Embodiment 2 from the ring axis direction. It is sectional drawing of the tool body of the detachable tool which concerns on Embodiment 3. FIG. It is a figure which saw the tool body of the attachment / detachment tool which concerns on Embodiment 3 from the ring axis direction. It is a side view of the tool body of the attachment / detachment tool which concerns on Embodiment 4. FIG. It is sectional drawing of the tool body of the attachment / detachment tool which concerns on Embodiment 4. FIG. It is a figure which saw the tool body of the attachment / detachment tool which concerns on Embodiment 4 from the ring axis direction. FIG. 5 is an enlarged cross-sectional view of a tool body of the attachment / detachment tool according to the fourth embodiment, showing a state in which the tool body is fitted in an oil filter case.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 shows the attachment / detachment tool 1 according to the first embodiment, and FIG. 2 shows an oil filter case 100 that can be removed using the attachment / detachment tool 1. As shown in FIG. 2, the oil filter case 100 covers an oil filter attached to an oil pan P (oil storage portion) of an internal combustion engine. The oil filter case 100 has a bottomed cylindrical shape. The oil filter case 100 has a plurality of corner portions 101 arranged in the circumferential direction at a portion of the peripheral surface portion near the bottom. That is, the oil filter case 100 has a cross section in which a plurality of corner portions 101 are formed.

As shown in FIG. 1, the detachable tool 1 includes a tool main body 10 and a container 50 coupled to the tool main body 10. In the first embodiment, the tool body 10 and the container 70 are detachably connected to each other.

As shown in FIGS. 3 and 4, the tool body 10 has a space portion 13 formed by an annular side wall portion 11 and a bottom portion 12 continuous with the side wall portion 11. The tool body 11 is open on the side opposite to the bottom portion 12 in the extending direction of the ring axis X (hereinafter referred to as the ring axis direction). The tool body 10 is made of resin.

As shown in FIGS. 1 and 3, the side wall portion 11 has a stepwise reduced diameter from the opening side of the tool body 10 toward the bottom 1 side. Specifically, the side wall portion 11 has a plurality of stages (here, three stages) such that the cross-sectional area of the space portion 13 becomes smaller toward the bottom portion 12 side in the ring axis direction. In the following description, each step portion of the side wall portion 11 is referred to as an upper step portion 20, a middle step portion 30, and a lower step portion 40 from the opening side to the bottom 12 side.

The upper portion 20 is a portion having the largest cross-sectional area. A plurality of upper engagement surfaces 21 that engage with at least a part of the plurality of corner portions 101 are formed side by side in the circumferential direction in the portion of the upper portion 20 on the space portion 13 side. A corner portion is formed between the two upper engagement surfaces 21 that are adjacent to each other in the circumferential direction, and the cross-sectional shape of the upper portion 20 is substantially polygonal. As shown in FIGS. 3 and 4, a plurality of upper groove portions 22 recessed from the upper engaging surface 21 toward the anti-space portion 13 side are formed between the circumferential directions of each upper engaging surface 21. Has been done. In particular, in the first embodiment, the upper groove portion 22 is provided at an intermediate portion in the circumferential direction of the upper engaging surface 21. Each upper groove portion 22 extends over the entire upper engaging surface 21 in the ring axis direction. The groove width W11 of the upper groove portion 22 is about 39% of the surface width W12 (width in the circumferential direction) of the upper engaging surface 21. The ratio of the groove width W11 of the upper groove portion 22 to the surface width W12 of the upper engaging surface 21 can be arbitrarily set as long as it is 35% to 45%.

As shown in FIG. 4, the three upper groove portions 22 arranged continuously in the circumferential direction have the three upper groove portions 22 in the circumferential direction in order of the first upper groove portion 22a, the second upper groove portion 22b, and the third upper groove portion 22. The groove portions 22c are arranged so that the circumferential distance between the first upper groove portion 22a and the second upper groove portion 22b and the circumferential distance between the second upper groove portion 22b and the third upper groove portion 22c are different. I'm out. For example, in FIG. 4, in the first to third upper groove portions 22a to 22c, the distance L1 in the circumferential direction between the first upper groove portion 22a and the second upper groove portion 22b is the second upper groove portion 22b and the third upper groove portion 22b. They are lined up so as to be longer than the circumferential distance L2 from 22c.

As shown in FIG. 3, at the boundary between the upper portion 20 and the middle portion 30, a radius is formed in each upper groove portion 22. This radius has a radius of curvature larger than the radius between the side surface and the bottom surface of the oil filter case 100.

The middle portion 30 is a portion having a cross-sectional area smaller than that of the upper portion 20 and larger than that of the lower portion 40. Similar to the upper portion 20, a plurality of middle-stage engaging surfaces 31 that engage with at least a part of the plurality of corner portions 101 are formed side by side in the circumferential direction in the portion of the middle-stage portion 30 on the space portion 13 side as well. .. Further, a plurality of middle-stage groove portions 32 recessed from the middle-stage engaging surface 31 toward the anti-space portion 13 side are formed between the middle-stage engaging surfaces 31, respectively, as in the upper-stage portion 20. In particular, in the first embodiment, the middle groove portion 32 is provided in the intermediate portion of the middle engaging surface 31. Each middle stage groove portion 32 extends over the entire middle stage engaging surface 31 in the ring axis direction. The ratio of the groove width of the middle groove portion 32 to the surface width of the middle engagement surface 31 is 42%. The ratio can be arbitrarily set as long as it is 35% to 45%.

As shown in FIG. 4, the arrangement of the middle groove portions 32 in the circumferential direction is the same as that of the upper groove portion 22, and the three middle groove portions 32 arranged continuously in the circumferential direction have the three middle groove portions 32 arranged in the circumferential direction. As the first middle stage groove portion 32a, the second middle stage groove portion 32b, and the third middle stage groove portion 32c, the distance between the first middle stage groove portion 32a and the second middle stage groove portion 32b in the circumferential direction, and the second middle stage groove portion 32b and the second middle stage groove portion 32b are in order. 3 The distances in the circumferential direction from the middle groove portion 32c are different from each other.

At the boundary between the middle portion 30 and the lower portion 40, a radius is formed in each middle groove portion 32 as in the upper groove portion 22. This radius has a radius of curvature larger than the radius between the side surface and the bottom surface of the oil filter case 100.

The lower portion 40 is a portion having the smallest cross-sectional area. Similar to the upper portion 20 and the middle portion 30, a plurality of lower engagement surfaces 41 that engage with at least a part of the plurality of corner portions 101 are arranged in the circumferential direction in the portion of the lower portion 40 on the space portion 13 side. It is formed. Further, between the lower engaging surfaces 41, a plurality of lower groove portions 42 recessed from the lower engaging surface 41 toward the anti-space portion side are formed, as in the upper portion 20 and the middle portion 30. ing. In particular, in the first embodiment, the lower groove portion 42 is provided in the intermediate portion of the lower engaging surface 41. Each lower groove portion 42 extends over the entire lower engagement surface 41 in the ring axis direction. The ratio of the groove width of the lower groove portion 42 to the surface width of the lower engaging surface 41 is 42%. The ratio can be arbitrarily set as long as it is 35% to 45%.

As shown in FIG. 4, the arrangement of the lower groove portions 42 in the circumferential direction is the same as that of the upper groove portion 22 and the middle groove portion 32, and the three lower groove portions 42 arranged continuously in the circumferential direction form the three lower groove portions 42. As the first lower groove portion 42a, the second lower groove portion 42b, and the third lower groove portion 42c, the distance in the circumferential direction between the first lower groove portion 42a and the second lower groove portion 42b and the second lower stage The grooves 42b and the third lower groove 42c are arranged so that the distance in the circumferential direction is different.

At the boundary between the lower portion 30 and the bottom portion 12, a radius is formed in each lower groove portion 42 as in the upper groove portion 22 and the middle groove portion 32. This radius has a radius of curvature larger than the radius between the side surface and the bottom surface of the oil filter case 100.

FIG. 5 shows the engagement state between the tool body 10 and the oil filter case 100. As shown in FIG. 5, when the oil filter case 100 is removed from the oil pan P by the tool body 10, the engaging surfaces 21, 31, 41 of the corresponding step portions 20, 30, 40 and the corner portions 101 of the oil filter case 100 are used. And contact in a state close to surface contact. Then, a force is transmitted from the engaging surfaces 21, 31, and 41 to the oil filter case 100, and the oil filter case 100 rotates.

The end of the tool body 10 opposite to the container 70, specifically, the portion on the opposite bottom 12 side of the upper portion 20 in the ring axis direction, is continuous with the side wall portion 11 and larger than the oil filter case 100. An annular saucer portion 14 having a cross-sectional area is provided. The plurality of upper groove portions 22 of the upper portion 20 are continuous with the portion of the saucer portion 14 on the space portion 13 side.

The bottom portion 12 has a hole portion 50 in the center in the radial direction. The hole portion 50 communicates the space portion 13 with the accommodating portion 71 of the container 70.

As shown in FIG. 3, an inclined surface 51 inclined toward the container 70 in the ring axis direction toward the hole 50 is formed in a portion of the bottom 12 between the side wall portion 11 and the hole 50.

As shown in FIG. 3, a screw portion 15 on which the container 70 is screwed is formed on the antispace portion 13 side with respect to the bottom portion 12 of the tool body 10. The container 70 is detachably connected to the tool body 10 via the screw portion 15.

In order to remove the oil filter case 100 from the oil pan P by the attachment / detachment tool 1 according to the first embodiment, first, as shown in FIG. 6, the oil filter case 100 is housed in the space 13 of the tool body 10. As described above, the tool body 10 is fitted to the outside of the oil filter case 100. Next, the engaging surface of the tool body 10 (here, the middle engaging surface 31) is engaged with the corner portion 101 of the oil filter case 100. After that, the oil filter case 100 is removed from the oil pan P by rotating the tool body 10 together with the container 70. In the present embodiment, the oil filter case 100 is removed from the oil pan P together with the oil filter body.

Here, when the oil filter case 100 is removed from the oil pan P, oil may leak from the gap between the oil filter case 100 and the oil pan P. On the other hand, according to the attachment / detachment tool 1 described in the first embodiment, as shown in FIG. 7, when an oil leak occurs during the removal of the oil filter case 100, the oil enters the space 13 and enters the space 13. It flows down along the groove (here, the middle groove 32). That is, since each of the plurality of grooves formed in the side wall portion 11 is recessed toward the anti-space portion 13 side from the engaging surface, the engaging surface and the corner portion 101 are formed as shown in FIG. In the engaged state, a gap is formed in each groove portion. Further, even when the engaging surface and the corner portion 101 are engaged with each other due to the radius formed in the groove portion, the groove portion is in a state of communicating in the ring axis direction. As a result, the oil that has flowed into the groove flows down to the bottom 12 through the groove, and then flows down to the accommodating portion 71 of the container 70 through the hole 50.

At this time, as shown by the black arrow in FIG. 3, the oil may flow down through the groove portions 22, 32, 42, or after passing through one groove portion (upper groove portion 22 in FIG. 3), the oil is engaged. It may flow down along the engaging surfaces that are not engaged (the middle engaging surface 31 and the lower engaging surface 41 in FIG. 3).

On the other hand, it is difficult for oil to enter between the engaging surface of the attachment / detachment tool 1 (here, the middle engaging surface 31) and the corner portion 101 of the oil filter case 100. As a result, each engaging surface of the attachment / detachment tool 1 and each corner portion 101 of the oil filter case 100 are maintained in an engaged state.

Similarly, when the oil filter case 100 engages with other stages (upper stage 20 and lower stage 40), the oil also flows along the corresponding groove, flows down to the bottom 12, and then passes through the hole 50. It flows down to the accommodating portion 71 of the container 70 through the container 70.

As a result, even if an oil leak occurs, the oil filter case 100 can be smoothly removed.

Further, in the first embodiment, the three groove portions that are continuously arranged in the circumferential direction among the plurality of groove portions are, in order, the first groove portion, the second groove portion, and the third groove portion, the first groove portion and the second groove portion. The circumferential distance between them is different from the circumferential distance between the second groove and the third groove. As a result, the arrangement in the circumferential direction of each engaging surface and the arrangement in the circumferential direction of each groove portion become different. As a result, it is appropriately suppressed that the corner portion 101 of the oil filter case 100 is erroneously engaged with the groove portion. As a result, the oil filter case 100 can be removed more smoothly.

Further, in the first embodiment, an annular saucer portion 14 that is continuous with the upper portion 20 and has a larger cross-sectional area than the oil filter case 100 is provided at the end portion of the tool body 10 on the side opposite to the container 70. The plurality of upper groove portions 22 are continuous with the portion of the saucer portion 14 on the space portion 13 side. As a result, even if the oil filter case 100 engages with the upper portion 20, the oil leaking from between the oil filter case 100 and the oil pan P is received by the saucer portion 14, and the saucer portion 14 to the upper groove portion 22. It runs down along. As a result, it is possible to appropriately prevent oil from entering between the upper engaging surface 21 and the corner portion 101. As a result, the oil filter case 100 can be removed more smoothly.

Further, in the first embodiment, an inclined surface 51 inclined toward the container 70 in the ring axis direction toward the hole 50 is formed in the portion between the side wall portion 11 and the hole 50 in the bottom portion 12. .. As a result, the oil that has flowed down along the grooves 22, 32, and 42 and has reached the bottom 12 can easily flow toward the holes 50. This facilitates the recovery of leaked oil.

Further, in the first embodiment, the groove width of each groove portion is 35% to 45% of the length in the circumferential direction of each engaging surface. This makes it easier for the oil to flow through the groove. As a result, the leaked oil can be easily recovered.

Further, in the first embodiment, the side wall portion 11 has a plurality of stages so that the cross-sectional area of the space portion 13 decreases toward the bottom portion 12 side in the ring axis direction, and the groove portions 22, 32, and 42 have a plurality of stages. In a state where the side wall portion 11 of the specific step and the oil filter case 100 are engaged, the groove portions 22, 32, 42 provided in the side wall portion 11 of the specific step are configured to communicate with each other in the ring axis direction. There is. If it has a multi-stage configuration like this configuration, it can correspond to the oil filter case 100 of various standards. As a result, the oil filter case 100 can be removed more smoothly.

Further, in the first embodiment, the container 70 is detachably connected to the tool body 10. This facilitates the disposal and reuse of the recovered oil.

FIG. 8 shows a modification of the attachment / detachment tool 1 according to the first embodiment. In this modification, the tool body 10 and the container 70 are integrally connected. Although detailed illustration is omitted, the configuration of the side wall portion 11 is the same as that of the side wall portion of the first embodiment. Even in this modified example, even if an oil leak occurs, the oil filter case 100 can be smoothly removed.

Further, in this modification, since the tool body 10 and the container 70 are integrated, the strength of the attachment / detachment tool 1 can be improved. Further, when rotating the oil filter case 100 in a state where the engaging surface of the tool body 10 and the corner portion 101 of the oil filter case 100 are engaged, it is easy to rotate the oil filter case 100 together with the container 70. Therefore, the oil filter case 100 can be removed more smoothly.

(Embodiment 2)
Hereinafter, the second embodiment will be described in detail with reference to the drawings. In the following description, the parts common to the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 9 and 10, in the second embodiment, in the tool body 210, the groove portions 222, 232, 242 formed in the step portions 20, 30 and 40 are arranged evenly in the circumferential direction. This is different from the first embodiment. Also in the second embodiment, the corner portions 101 of the oil filter case 100 and the engaging surfaces 21, 31, and 41 are engaged with each other, and the corresponding groove portions 222, 232 and 242 are in a state of communicating with each other in the ring axis direction. .. As a result, even if an oil leak occurs when the oil filter case 100 is removed from the oil pan P, the leaked oil flows down to the bottom 12 through the grooves 222, 232 and 242, and then the hole 50 is opened. It flows down to the accommodating portion 71 of the container 70 through the container 70. On the other hand, it is difficult for oil to enter between the engaging surfaces 21, 31, 41 of the attachment / detachment tool 1 and the corner 101 of the oil filter case 100.

Therefore, according to the attachment / detachment tool 201 according to the second embodiment, the oil filter case 100 can be smoothly removed even when an oil leak occurs.

(Embodiment 3)
Hereinafter, the third embodiment will be described in detail with reference to the drawings. In the following description, the parts common to the first and second embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 11 and 12, in the third embodiment, in the tool body 310, each groove portion 322, 332, 342 is not formed in the intermediate portion of the corresponding engaging surfaces 321, 331, 341. , It is different from the first and second embodiments in that it is provided between the engaging surfaces 321 and 331 and 341 which are adjacent to each other in the circumferential direction. More specifically, in the third embodiment, the engaging surfaces 321 and 331, 341 are not provided in the portions where the groove portions 322, 332 and 342 are provided. Further, the groove widths of the groove portions 322, 332 and 342 are larger than those of the first and second embodiments.

Also in the third embodiment, in the state where the corners 101 of the oil filter case 100 and the engaging surfaces 321 and 331, 341 are engaged, the corresponding groove portions 322, 332 and 342 are in a state of communicating with each other in the ring axis direction. .. As a result, even if an oil leak occurs when the oil filter case 100 is removed from the oil pan P, the leaked oil flows down to the bottom 12 through the groove 322, 332, 342, and then the hole 50 is opened. It flows down to the accommodating portion 71 of the container 70 through the container 70. On the other hand, it is difficult for oil to enter between the engaging surfaces 321 and 331, 341 of the attachment / detachment tool 1 and the corners 101 of the oil filter case 100.

Therefore, according to the attachment / detachment tool 301 according to the third embodiment, the oil filter case 100 can be smoothly removed even when an oil leak occurs.

(Embodiment 4)
Hereinafter, the fourth embodiment will be described in detail with reference to the drawings. In the following description, the parts common to the first to third embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 13 and 15, in the present embodiment 4, in the tool body 410, the surface portion of the side wall portion 411 opposite to the space portion 13 (hereinafter referred to as the outer side wall surface portion 411a) is the space in the side wall portion 411. It differs from the first to third embodiments in that it corresponds to the shape of the surface portion of the portion 13. Further, as shown in FIGS. 14 to 16, the bottom portion 412 is different from the first to third embodiments in that ribs 443 are provided at the positions of the lower groove portions 442 of the lower portion 40.

As shown in FIG. 13, the outer side wall surface portion 411a has a flat portion corresponding to the engaging surface 421, 431, 441, while the portion corresponding to the groove portion 422, 432, 442 is the anti-space portion 13. It bulges toward the side. With such a shape, the thickness of the side wall portion 411 can be made uniform as a whole. As a result, it is possible to prevent sink marks from occurring when the tool body 410 is manufactured. Further, since the outer side wall surface portion 411a is formed with irregularities, the tool body 410 can be easily grasped, and the work of removing the oil filter case 100 becomes easier.

As shown in FIGS. 14 and 15, the ribs 443 extend from both ends of the lower groove portion 442 in the circumferential direction toward the hole portion 50, respectively. As shown in FIG. 16, the rib 443 is used to remove the oil filter case 100 having a size that engages with the lower engaging surface 441, even if the tool body 410 is pressed against the oil filter case 100. A gap will be created between the 100 and the bottom 12. This makes it easier for the leaked oil to flow toward the hole 50.

Therefore, according to the attachment / detachment tool 401 according to the fourth embodiment, the oil filter case 100 can be removed more smoothly even when an oil leak occurs.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and can be substituted within a range that does not deviate from the gist of the claims.

For example, in the above-described first to fourth embodiments, the side wall portion 11 has a three-stage configuration, but the present invention is not limited to this, and the configuration may be four or more stages or two or less stages.

Further, also in the above-described embodiments 2 to 4, the tool bodies 210 and 310 and the container 70 may be integrally connected.

Further, also in the above-described first to third embodiments, the rib may be provided on the bottom portion 12 as in the above-described fourth embodiment.

The above embodiments are merely examples, and the scope of the present invention should not be construed in a limited manner. The scope of the present invention is defined by the scope of claims, and all modifications and modifications belonging to the equivalent scope of the claims are within the scope of the present invention.

The present invention is useful as a tool for attaching / detaching an oil filter case which is attached to an oil storage portion via a connecting portion and has a cross section in which a plurality of corner portions are formed.

1,201,301,401 Detachable tool 10,210,310,410 Tool body 11 Side wall part 12 Bottom part 13 Space part 14 Recipient part 21,321,421 Upper engagement surface 22,222,322,422 Upper groove part 31,331 , 431 Middle engagement surface 32,232,332,432 Middle groove 41,341,441 Lower engagement surface 42,242,342,442 Lower groove 50 Hole 51 Inclined surface 70 Container 71 Storage 100 Oil filter case

Claims (7)

An oil filter case attachment / detachment tool that is attached to the oil reservoir via a connection and has a cross section with a plurality of corners formed.
A tool body having a space formed by an annular side wall portion and a bottom portion continuous with the side wall portion,
A plurality of engaging surfaces formed on the space side portion of the side wall portion and engaging with at least a part of the plurality of corner portions.
A plurality of grooves provided between the engaging surfaces in the circumferential direction and recessed toward the anti-space portion side from the engaging surface, and
The hole provided in the bottom and
It has a housing portion that communicates with the space portion by the hole portion, and includes a container coupled to the tool body.
An oil filter case attachment / detachment tool, characterized in that the oil filter case is rotated to attach / detach the oil filter case in a state where the corner portions and the engaging surfaces are engaged with each other. In the oil filter case attachment / detachment tool according to claim 1,
Of the plurality of grooves, three grooves continuously arranged in the circumferential direction are designated as a first groove, a second groove, and a third groove in order.
A tool for attaching / detaching an oil filter case, characterized in that the distance in the circumferential direction between the first groove portion and the second groove portion and the distance in the circumferential direction between the second groove portion and the third groove portion are different. In the oil filter case attachment / detachment tool according to claim 1 or 2.
At the end of the tool body on the anti-container side, an annular saucer portion that is continuous with the side wall portion and has a larger cross-sectional area than the oil filter case is provided.
A tool for attaching / detaching an oil filter case, wherein the plurality of grooves are continuous with a portion of the saucer portion on the space side. In the oil filter case attachment / detachment tool according to any one of claims 1 to 3.
An oil filter case characterized in that an inclined surface inclined toward the container side in the ring axis direction toward the hole portion is formed in a portion of the bottom portion between the side wall portion and the hole portion. Detachable tool. In the oil filter case attachment / detachment tool according to any one of claims 1 to 4.
An oil filter case attachment / detachment tool, wherein the groove width of each groove portion is 35% to 45% of the length of each engagement surface in the circumferential direction. In the oil filter case attachment / detachment tool according to any one of claims 1 to 5.
The side wall portion has a plurality of stages so that the cross-sectional area of the space portion becomes smaller toward the bottom side in the ring axis direction.
Each of the groove portions is configured such that the groove portions provided on the side wall portion of the specific step communicate with each other in the ring axis direction in a state where the side wall portion of the specific step and the oil filter case are engaged with each other. An oil filter case attachment / detachment tool that features this. In the oil filter case attachment / detachment tool according to any one of claims 1 to 6.
An oil filter case attachment / detachment tool, wherein the container is detachably coupled to the tool body.