JP5446715B2 - Vehicle oil passage coupling device - Google Patents

Description

  The present invention relates to a vehicular oil passage coupling device for interconnecting a first oil passage and a second oil passage that open to respective combination surfaces of a first case and a second case, and in particular, has a sealing property. The present invention relates to a technique for suppressing the decrease.

  In order to oil-tightly connect the first oil passage and the second oil passage that respectively open to the opposing combination surfaces of the first case and the second case that are combined with each other, both end portions are respectively provided in the pair of openings. In order to oil-tightly seal between the cylindrical member to be fitted, and the inner peripheral surfaces of the first oil passage and the second oil passage and the outer peripheral surfaces of both end portions of the cylindrical member, 2. Description of the Related Art There is known a vehicular oil passage coupling device that includes an annular seal member made of a soft elastic material such as rubber provided on the outer circumferences of both ends, and that connects the first oil passage and the second oil passage. . For example, an oil passage coupling device as shown in FIG. According to such an oil passage coupling device, it is not necessary to provide the pipes constituting the first oil passage and the second oil passage outside the first case and the second case. The space occupied can be reduced, and the cost increase and mass increase due to the provision of the piping can be suppressed.

JP 7-158744 A

  By the way, in the said conventional oil-path connection apparatus, the assembly | attachment to the opening of a 1st oil path and a 2nd oil path of a cylindrical member is performed with the assembly | attachment of a 1st case and a 2nd case. For example, when the one end of the cylindrical member is fitted into one of the pair of openings and the combination surface of the first case and the second case is combined, the other end of the cylindrical member is the other of the pair of openings. It is inserted in. At this time, the other end of the cylindrical member is fitted while sliding in the axial direction with respect to the inner peripheral surface of the other opening. For this reason, the annular seal member provided on the outer periphery of the end portion of the cylindrical member by the above assembly is twisted due to the uneven rotation, and the inner peripheral surface of the oil passage and the cylindrical member are caused by the twist. There is a possibility that the sealing property between the outer peripheral surface of the end portion of the slab, that is, the sealing property may be lowered.

  The present invention has been made against the background of the above circumstances, and an object of the present invention is to provide an oil passage coupling device for a vehicle that can suppress deterioration in sealing performance caused by twisting of an annular seal member. It is in.

To achieve this object, the gist of the invention according to claim 1 is as follows: (1) a first oil passage and a second oil passage that open to opposing combination surfaces of a first case and a second case that are combined with each other; In order to connect the oil passages in an oil-tight manner to each other, a cylindrical member having both ends fitted in the pair of openings, inner peripheral surfaces of the first oil passage and the second oil passage, and the tubular member Made of an elastic material respectively provided on the outer periphery of both ends of the cylindrical member in order to compress between the outer peripheral surfaces of both ends of the tube member and to oil tightly seal between the inner peripheral surface and the outer peripheral surface An annular seal member, and the annular seal member is fitted into the inner peripheral surfaces of the openings of the first oil passage and the second oil passage while being slid in the axial direction, and the first oil passage and the first oil passage An oil passage coupling device for a vehicle that couples two oil passages, wherein (2) the shaft of the cylindrical member It is provided with the rotation operation part which is provided in the middle part of a direction, and the operation force for rotating the cylindrical member around an axis center is applied via the rotation operation jig which cannot be rotated relative to the cylindrical member. .

  The gist of the invention according to claim 2 is that, in the invention according to claim 1, at least one of the first case and the second case has the first case and the second case attached to each other. In the assembled state, a hole is formed so that an intermediate portion in the axial direction of the cylindrical member can be visually recognized.

  Further, the gist of the invention according to claim 3 is that, in the invention according to claim 2, (1) the rotation operation jig is detachably engaged with the rotation operation portion, (2) The hole is to function as a jig insertion hole for inserting the rotation operation jig in a state where the first case and the second case are assembled to each other.

  Further, the gist of the invention according to claim 4 is that, in the invention according to claim 3, the rotation operation portion has a shape that is relatively non-rotatable and detachably engageable with the rotation operation jig. It is in.

  The gist of the invention according to claim 5 is that, in the invention according to claim 4, the rotation operation portion is formed so that a cross-sectional shape orthogonal to the axis of the cylindrical member is a polygon. There is in being.

  A gist of the invention according to claim 6 is that, in the invention according to claim 4, the rotation operation portion has an engagement hole that engages with the rotation operation jig in a relatively non-rotatable manner. .

  According to the vehicle oil passage coupling device of the first aspect of the present invention, an operating force is provided at an intermediate portion in the axial direction of the cylindrical member, and the operating force for rotating the cylindrical member around the axial center is the cylinder. Since a rotation operation part applied via a rotation operation jig that cannot rotate relative to the cylindrical member is provided, the twist generated in the annular seal member when fitted is caused to rotate the cylindrical member with the rotation operation jig. Since it is eliminated, it is possible to suppress a decrease in sealing performance due to the twist of the annular seal member.

  According to the vehicle oil passage coupling device of the invention of claim 2, the first case and the second case are assembled to each other in at least one of the first case and the second case. Since the hole in which the axial center direction of the cylindrical member can be visually recognized in the state is formed, the annular seal is sealed from each oil passage by viewing the axial center direction of the cylindrical member from the hole. The presence or absence of oil leakage occurring through the member can be confirmed. In addition, since oil leakage can be confirmed when oil leaks into the intermediate part of the cylindrical member, for example, when oil leaks from below the combination surface of the first and second cases, oil leakage is confirmed. , Oil leak site can be found early and accurately.

  According to the vehicle oil passage coupling device of the invention of claim 3, the rotation operation jig is detachably engaged with the rotation operation portion, and the hole is the first hole. Since the case and the second case function as a jig insertion hole for inserting the rotation operation jig in a state where the case and the second case are assembled to each other, the rotation operation jig is rotated after the combination of the first case and the second case. Since the cylindrical member can be rotated by being engaged with the operation unit, for example, a complicated operation such as combining the first case and the second case while rotating the cylindrical member with a rotation operation jig is unnecessary, Assembly work is simplified.

  According to the vehicle oil passage coupling device of the invention of claim 4, the rotation operation portion has a shape that is relatively unrotatable and detachably engageable with the rotation operation jig. The cylindrical member can be rotated with the rotation operation jig engaged with the portion, and the rotation operation jig can be detached from the rotation operation portion when it is not necessary, that is, when the cylindrical member is not rotated.

  According to the vehicle oil passage coupling device of the invention according to claim 5, the rotational operation portion is formed so that the cross-sectional shape orthogonal to the axis of the cylindrical member is a polygon. Since the rotation operation jig can be easily engaged with the rotation operation portion in a relatively non-rotatable manner, the cylindrical member can be reliably rotated by the rotation operation jig.

  Further, according to the vehicle oil passage coupling device of the invention according to claim 6, the rotation operation part has an engagement hole that engages with the rotation operation jig in a relatively non-rotatable manner. Since, for example, a rod-shaped member that can be inserted into and removed from the engagement hole can be used, there is an advantage that the rotary operation jig is simple and low-cost.

It is a figure which shows typically the drive device for vehicles to which this invention was applied. It is a figure which shows the II-II arrow part of FIG. 1, Comprising: It is the figure which looked at the engine from the combination surface side of the engine block. It is a figure which shows the III-III arrow part of FIG. 1, Comprising: It is the figure which looked at the clutch apparatus from the combination surface side of the clutch housing. It is a perspective view of the IV arrow part which expands and shows the vehicle oil path connection apparatus of FIG. It is sectional drawing which shows the VV arrow part cross section of FIG. It is sectional drawing which shows the VI-VI arrow part cross section of FIG. It is a figure which shows the oil-path coupling device for vehicles of the other Example of this invention, Comprising: It is a figure corresponding to FIG. FIG. 8 is a diagram illustrating a cross-section taken along the line VIII-VIII in FIG. 7 and corresponding to FIG. 6 of the first embodiment. It is a figure which shows the oil-path coupling device for vehicles of the other Example of this invention, Comprising: It is a figure corresponding to FIG. It is a figure which shows the oil-path coupling device for vehicles of the other Example of this invention, Comprising: It is a figure corresponding to FIG.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the following embodiments, the drawings are appropriately simplified or modified, and the dimensional ratios, shapes, and the like of the respective parts are not necessarily drawn accurately.

  FIG. 1 is a diagram schematically showing a vehicle drive device 10 to which the present invention is applied. In FIG. 1, a vehicle drive device 10 according to the present embodiment includes an engine 12 configured by an internal combustion engine, a clutch housing (second case) 14 of a clutch device 18 that accommodates, for example, a dry disc clutch 16, and the like. And a transmission case 20 of the transmission 24 that houses the parallel two-shaft gear transmission mechanism 22.

  Lubricating oil is stored at the bottom of the transmission case 20. Each lubrication portion of the transmission 24 is lubricated by being supplied with the lubricating oil scraped up by the rotating gear transmission mechanism 22. In the partition wall of the transmission case 20 adjacent to the clutch housing 14, when the lubricating oil stored at the bottom of the transmission case 20 exceeds a predetermined oil level, the excess lubricating oil flows out from the transmission case 20. An oil spill oil passage 26 is formed.

  A first communication oil passage 30 that communicates from an end surface adjacent to the transmission case 20 to the combination surface 28 with the engine 12 and opens there is formed in the partition wall at the bottom of the clutch housing 14. The first communication oil passage 30 is connected to the oil outflow oil passage 26 of the transmission case 20, and causes the engine 12 to circulate the lubricating oil flowing out from the transmission case 20.

  A partition wall adjacent to the clutch housing 14 of the cylinder block (first case) 32 of the engine 12 opens to a combination surface 34 combined with the combination surface 28 and communicates from there to the oil tank 36 of the engine 12. An oil supply oil passage 38 is formed. The first oil supply oil passage 38 is connected to the first communication oil passage 30 of the clutch housing 14, and supplies lubricating oil supplied from the first communication oil passage 30 to the oil tank 36.

  Each lubricating portion of the engine 12 is lubricated by the lubricating oil in the oil tank 36 being supplied by the first oil pump 40. A discharge oil passage (first oil passage) 44 connected to the discharge port of the second oil pump 42 is formed in a partition wall of the cylinder block 32 adjacent to the clutch housing 14. Lubricating oil is pumped from the engine 12 to the discharge oil passage 44 by the second oil pump 42.

  A second communication oil passage (second oil passage) 46 communicating from the combination surface 28 to the end face adjacent to the transmission case 20 is formed in the partition wall at the top of the clutch housing 14. The second communication oil passage 46 is connected to the discharge oil passage 44 of the cylinder block 32 by, for example, a vehicle oil passage connection device 48 according to an embodiment of the present invention shown in FIG. Is supplied to the transmission 24 with relatively high-pressure lubricating oil delivered from the vehicle oil passage coupling device 48.

  A partition wall adjacent to the clutch housing 14 of the transmission case 20 is formed with a second oil supply oil passage 50 connected to the second communication oil passage 46 of the clutch housing 14 and communicating with the inside of the transmission case 20. ing. The second oil supply oil passage 50 is connected to the second communication oil passage 46 of the clutch housing 14 and supplies the lubricating oil supplied from the second communication oil passage 46 into the transmission case 20. The lubricating oil supplied from the second oil supply oil passage 50 into the transmission case 20 is free-falling and stored at the bottom of the transmission case 20.

  Lubricating oil stored at the bottom of the transmission case 20 is used to lubricate the lubricating portions of the engine 12 and the transmission 24 while circulating through the circulation path constituted by the oil passages and the pumps. The breather passage 52 communicated from the transmission case 20 to the cylinder block 32 through the clutch housing 14 is provided with a breather valve provided in the engine 12 (not shown) when the pressure in the transmission case 20 exceeds a predetermined value. This is for circulating the space in the transmission case 20 to the atmosphere via the.

  FIG. 2 is a view showing the portion taken along the line II-II in FIG. 1 and is a view of the engine 12 as seen from the combination surface 34 side of the engine block 32. FIG. 2 shows a state in which the vehicle oil passage coupling device 48 is assembled to the discharge oil passage 44 that opens to the combination surface 34 as shown in detail in FIG. 4 described later. 3 is a view showing the portion taken along the line III-III of FIG. 1, and is a view of the clutch device 19 as viewed from the combination surface 28 side of the clutch housing 14. FIG. FIG. 3 shows a state in which the vehicle oil passage coupling device 48 is not attached to the second communication oil passage 46 opened on the combination surface 28. FIG. 4 is an enlarged perspective view showing the vehicle oil passage coupling device 48 as viewed in the direction of arrow IV in FIG. 5 is a cross-sectional view showing a cross section taken along the line VV in FIG. FIG. 6 is a cross-sectional view showing a cross section taken along the line VI-VI in FIG.

  2 to 6, the vehicle oil passage coupling device 48 of the present embodiment is opposed to the cylinder block (first case) 32 and the clutch housing (second case) 14 that are assembled to each other. In order to connect the discharge oil passage (first oil passage) 44 and the second communication oil passage (second oil passage) 46 respectively opened to the combination surface 34 and the combination surface 28, both end portions are provided in the pair of openings. Are each provided with a cylindrical member 54 which is a cylindrical member fitted therein. The opening end portions of the discharge oil passage 44 and the second communication oil passage 46 are formed in stepped cylindrical shapes having enlarged diameter portions 56 and 57 and having a larger diameter toward the opening side. Both end portions of the cylindrical member 54 are fitted into enlarged diameter portions 56 and 57 formed at the opening end portions of the discharge oil passage 44 and the second communication oil passage 46, respectively. The cylindrical member 54 is restricted from moving in the direction of the axis C by contacting the end surface 58 with the stepped end surface 58 formed at the opening end of the discharge oil passage 44 and the second communication oil passage 46. It has become. The discharge oil passage 44 and the second communication oil passage 46 are communicated with each other through a through hole 60 formed in the cylindrical member 54.

  Further, the vehicle oil passage coupling device 48 has an oil tight seal between the inner peripheral surface of the discharge oil passage 44 and the second communication oil passage 46 and the outer peripheral surfaces of both end portions of the cylindrical member 54. A pair of O-rings 62 each functioning as an annular seal member provided on the outer periphery of both ends of the cylindrical member 54 are provided. As is well known, the O-ring 62 is made of an oil-resistant synthetic rubber, but may be made of another material having elasticity. A pair of annular O-ring grooves 64 that are continuous in the circumferential direction are respectively provided on the outer peripheral surfaces of both ends of the cylindrical member 54. The pair of O-rings 62 are formed between the inner peripheral surface of the discharge oil passage 44 and the bottom surface of the O-ring groove 64 facing the discharge oil passage 44, and between the inner peripheral surface of the second communication oil passage 46 and the bottom surface of the O-ring groove 64 facing it. Are compressed and crushed in the radial direction. In this way, the pair of O-rings 62 are brought into close contact with the inner peripheral surfaces and the bottom surfaces, respectively, thereby preventing the lubricating oil from leaking between the inner peripheral surfaces and the bottom surfaces.

  At an intermediate portion of the cylindrical member 54 in the direction of the axis C, an operation force F (see FIG. 6) for rotating the cylindrical member 54 around the axis C is not rotatable relative to the cylindrical member 54. A rotation operation unit 68 is provided through 66. The rotation operation unit 68 has a shape that is relatively non-rotatable and detachably engageable with the rotation operation jig 66. The rotation operation unit 68 of the present embodiment is formed so that the cross-sectional shape perpendicular to the axis C is a regular octagon (polygon). In addition, the rotation operation jig 66 of the present embodiment includes a pair of engagement surfaces that are parallel to each other and that are opposed to each other and have a slightly larger interval than the interval between a pair of opposite surfaces of the outer peripheral surface of the rotation operation unit 68. It has a spanner shape, and receives the rotary operation portion 68 and detachably engages with it.

  As shown in FIGS. 3 and 5 to 6, the rotary operation portion 68 is visually recognized from the outside on the combination surface 28 of the clutch housing 14 even after the case is combined with the cylinder block 32 and the clutch housing 14 being combined with each other. Possible groove-like slits (holes) 72 are formed. The length in the axial center C direction from the combination surface 34 of the clutch housing 14 to the stepped portion end surface 58 of the second communication oil passage 46, and from the combination surface 28 of the cylinder block 32 to the stepped portion end surface 58 of the discharge oil passage 44. The length in the direction of the axis C and the position of the rotation operation unit 68 in the direction of the axis C with respect to the cylindrical member 54 are slit 72 from the outside in a state where the cylindrical member 54 is in contact with one or the other of the end surfaces 58 of both stepped portions. Thus, the rotation operation unit 68 is set so as to be visible. The slit 72 receives the rotation operation jig 66 and rotates the cylindrical member 54 in a state where the cylinder block 32 and the clutch housing 14 are combined with each other, so that the arrow a and the two-dot chain lines 66a and 66b in FIG. It functions as a jig insertion hole that allows operation in the direction of arrow b. The rotation operation jig 66 can be attached to and detached from the rotation operation unit 68 even when the cylinder block 32 and the clutch housing 14 are combined with each other. Further, the rotation operation jig 66 can rotate the cylindrical member 54 even when the cylinder block 32 and the clutch housing 14 are combined with each other.

  Next, an example of assembly work of the vehicle oil passage coupling device 48 will be described. For example, first, one end portion of the cylindrical member 54 in a state in which the pair of O-rings 62 are respectively fitted in the pair of O-ring grooves 64 is fitted into the enlarged diameter portion 56 of the discharge oil passage 44 of the cylinder block 32. As a result, the state shown in FIG. 4 is obtained. When the clutch housing 14 and the cylinder block 32 are combined with each other, a tapered surface 74 (see FIGS. 4 to 5) formed on the outer peripheral surface of the other end of the cylindrical member 54 is used as necessary. The other end of the cylindrical member 54 is fitted into the enlarged diameter portion 56 of the second communication oil passage 46 of the clutch housing 14, and then the clutch housing 14 and the cylinder block 32 are combined with each other. Then, the rotation operation jig 66 is inserted into the slit 72 and engaged with the rotation operation portion 68 of the cylindrical member 54. Then, as shown in FIG. 6, the cylindrical member 54 is alternately rotated a plurality of times in the directions of the arrows a and b around the axis C by the rotation operation jig 66. Even when the O-ring 62 is twisted by fitting the end of the cylindrical member 54 while sliding the end portions of the cylindrical member 54 in the direction of the axis C with respect to the enlarged diameter portions 56 and 57, the cylindrical member 54 is By being rotated, the frictional force between the inner peripheral surface of each oil passage and the bottom surface of each O-ring groove 64 is reduced, and the twist is eliminated according to the elastic restoring force of the O-ring 62 itself.

  As described above, according to the vehicle oil passage coupling device 48 of the present embodiment, the cylindrical member 54 is provided in the intermediate portion in the direction of the axis C, and is used for rotating the cylindrical member 54 around the axis C. Since the operation force F is provided with a rotation operation portion 68 applied via a rotation operation jig 66 that cannot rotate relative to the cylindrical member 54, the twist generated in the O-ring (annular seal member) 62 when fitted. Since it is eliminated by rotating the cylindrical member 54 with the rotation operation jig 66, it is possible to suppress a decrease in sealing performance due to twisting of the O-ring 62. Further, depending on the magnitude of the operating force F when the cylindrical member 54 is rotated by the rotation operation jig 66, foreign matter is present between the O-ring 62 and the inner peripheral surface of each oil passage 44 and 46 or the bottom surface of each O-ring groove 64. Can be determined on the basis of the operating force F of the rotary operation jig 66, the cylindrical member 54 and the O-ring 62 are assembled in the oil passages 44 and 46, respectively. There is also an advantage that it is possible to determine the presence or absence of foreign matter biting.

  Further, according to the vehicle oil passage coupling device 48 of the present embodiment, the rotation operation portion of the cylindrical member 54 in the state where the clutch housing 14 and the cylinder block 32 are assembled to the clutch housing (first case) 14. Since the slit (hole) 72 that can visually recognize 68 is formed, the presence or absence of oil leakage generated through the O-ring 62 from each of the oil passages 44 and 46 can be confirmed by viewing the rotary operation unit 68 from the slit 72. Can do. Further, since the oil leakage can be confirmed when the lubricating oil leaks to the rotation operation unit 68, for example, when the lubricating oil oozes out from below the combination surfaces 28 and 34 of the clutch housing 14 and the cylinder block 32, the oil leakage is detected. It is possible to find the oil leakage site earlier and more accurately than checking.

  Further, according to the vehicle oil passage coupling device 48 of the present embodiment, the rotation operation jig 66 is detachably engaged with the rotation operation unit 68, and the slit 72 is formed by the clutch housing 14 and the cylinder. Since it functions as a jig insertion hole for inserting the rotation operation jig 66 in a state where the blocks 32 are assembled to each other, the rotation operation jig 66 is moved to the rotation operation portion 68 after the clutch housing 14 and the cylinder block 32 are combined. Since the cylindrical member 54 can be rotated by being engaged with each other, for example, a complicated operation such as assembling the clutch housing 14 and the cylinder block 32 while rotating the cylindrical member 54 with the rotation operation jig 66 becomes unnecessary. Assembly work is simplified.

  In addition, according to the vehicle oil passage coupling device 48 of the present embodiment, the rotation operation unit 68 has a shape that is relatively non-rotatable and detachably engageable with the rotation operation jig 66. The cylindrical member 54 can be rotated by the rotational operation jig 66 engaged with the cylindrical member 54, and the rotational operation jig 66 can be removed from the rotational operation unit 68 when it is not necessary, that is, when the cylindrical member 54 is not rotated. it can.

  Further, according to the vehicle oil passage coupling device 48 of the present embodiment, the rotation operation unit 68 is formed so that the cross-sectional shape orthogonal to the axis C of the cylindrical member 54 is a regular octagon (polygon). Therefore, the cylindrical member 54 can be easily and reliably rotated by using the spanner-like rotation operation jig 66 that can be manufactured relatively easily and at a low cost.

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

  FIG. 7 is a view showing a vehicle oil passage coupling device 80 according to another embodiment of the present invention, and corresponds to FIG. 5 of the first embodiment. FIG. 8 is a view showing a section taken along the line VIII-VIII in FIG. 7, and corresponds to FIG. 6 of the first embodiment. 7 and 8, the rotation operation portion 68 of the vehicle oil passage coupling device 80 of the present embodiment is formed in the outer peripheral portion in the radial direction and engages with the rotation operation jig 82 so as not to be relatively rotatable. A plurality (eight) of holes 84 are provided at equal intervals in the circumferential direction. The rotation operation jig 82 of the present embodiment has a cylindrical tip portion having an outer diameter slightly smaller than the inner diameter of the engagement hole 84, and can be attached to and removed from the engagement hole 84. belongs to.

  In this embodiment, the clutch housing 14 is not provided with a slit 72 as shown in FIG. Therefore, as shown in FIG. 7, when the vehicle oil passage coupling device 80 assembles the clutch housing 14 and the cylinder block 32, both ends of the cylindrical member 54 are connected to the discharge oil passage 44 and the second communication oil passage 46. The cylindrical member 54 is rotated by the rotation operation jig 82 in a state of being fitted in the enlarged diameter portion 56. Preferably, the cylindrical member 54 is rotated in a state where the combination surface 28 of the clutch housing 14 and the combination surface 34 of the cylinder block 32 are as close as possible. Thereby, twisting of the O-ring 62 that occurs when the end portion of the cylindrical member 54 is fitted into the enlarged diameter portions 56 and 57 is suppressed.

  The rotation operation unit 68 and the rotation operation jig 82 of the present embodiment are different in shape from the rotation operation unit 68 and the rotation operation jig 66 of the first embodiment, but their functions are the same. In other words, the rotation operation unit 68 is provided at an intermediate portion in the direction of the axis C of the cylindrical member 54, and the operation force F for rotating the cylindrical member 54 about the axis C is incapable of relative rotation with the cylindrical member 54. It is added via a rotating operation jig 82 to be combined. Therefore, according to the vehicle oil passage coupling device 80 of the present embodiment, the twist generated in the O-ring (annular seal member) 62 is eliminated by rotating the cylindrical member 54 with the rotation operation jig 66. Similar to Example 1, the effect that the deterioration of the sealing performance due to the twist of the O-ring 62 can be suppressed is obtained.

  Moreover, according to the vehicle oil passage coupling device 80 of the present embodiment, the slit 72 can be removed, so that the forming process is not necessary. Further, the rotation operation portion 68 has an engagement hole 84 that engages with a rotation operation jig 82 having a cylindrical tip portion in a relatively non-rotatable manner, so that it can be manufactured relatively easily and at a low cost. The cylindrical member 54 can be easily and reliably rotated using the operation jig 82.

  As mentioned above, although one Example of this invention was described in detail with reference to drawings, this invention is not limited to this Example, It can implement in another aspect.

  For example, the rotation operation jig 66 of the above-described first embodiment has a spanner-shaped tip portion, and the rotation operation jig 82 of the above-described embodiment 2 has a cylindrical tip portion. For example, it may have a tip portion that can be rotated while sandwiching the rotation operation portion 68. In short, what is necessary is just to engage with a rotation operation part so that relative rotation is impossible.

  In the above-described embodiment, the rotation operation jigs 66 and 82 are detachably engaged with the rotation operation unit 68. For example, as shown in FIG. May be provided.

  Further, in the above-described embodiment, the cylindrical member 54 is positioned in the axial center C direction by contacting the stepped portion end surface 58 formed in each of the oil passages 44 and 46 with the position in the axial center C direction. However, for example, as shown in FIG. 10, the stopper member 90 fixed to the cylinder block 32 is engaged with a circumferential groove 92 formed in the outer peripheral portion of the cylindrical member 54, so that the axial center C direction is obtained. May be configured to be positioned. The stopper 90 may be fixed to the clutch housing 14. For example, as shown in FIG. 10, the oil passage in the cylindrical member 54 is allowed to flow from the engine 12 side to the transmission 24 side, and the flow of lubricating oil opposite to that is blocked. A one-way valve 94 may be provided, or a throttle portion having a smaller inner diameter than the discharge oil passage 44 and the second communication oil passage 46 may be provided.

  In the above-described embodiment, the vehicle oil passage coupling devices 48 and 80 connect (connect) the discharge oil passage 44 formed in the engine block 32 and the second communication oil passage 46 formed in the clutch housing 14. However, the present invention is not limited to this. For example, between the oil outflow oil passage 26 and the first communication oil passage 30, the first communication oil passage 30 and the first oil supply oil are provided. It may be provided between the passage 38 or between the second communication oil passage 46 and the second oil supply oil passage 50. Moreover, you may provide in part or all between each said oil path. In short, the present invention can be applied to any vehicle oil passage coupling device that is used to connect the first oil passage and the second oil passage that open to the opposing combination surfaces of the two cases.

  In the above-described embodiment, the cylindrical member 54 is provided as a cylindrical member. However, the cylindrical member may not necessarily be a cylinder but may be a cylindrical member having an elliptical cross-sectional shape.

  In the above-described embodiment, the O-ring 62 is provided as the annular seal member. However, an oil seal having a polygonal or elliptical cross section may be used.

  It should be noted that the above description is merely an embodiment, and other examples are not illustrated. However, the present invention is implemented in variously modified and improved modes based on the knowledge of those skilled in the art without departing from the gist of the present invention. Can do.

14: Clutch housing (second case)
28, 34: combination surface 32: cylinder block (first case)
44: Discharge oil passage (first oil passage)
46: Second communication oil passage (second oil passage)
48, 80: Vehicle oil passage coupling device 54: Cylindrical member (tubular member)
62: O-ring (annular seal member)
66, 66a, 66b, 82, 82a, 82b: rotation operation jig 68: rotation operation unit 72: slit (hole, jig insertion hole)
84: engagement hole C: shaft center

Claims (6)

In order to oil-tightly connect the first oil passage and the second oil passage that respectively open to the opposing combination surfaces of the first case and the second case that are combined with each other, both ends are respectively provided in the pair of openings. The cylindrical member to be fitted, the inner peripheral surface of the first oil passage and the second oil passage, and the outer peripheral surface of both ends of the cylindrical member are compressed to form the inner peripheral surface and the outer peripheral surface. and a cylindrical member annular seal member outer periphery elastic member made of the respectively provided at both ends in order to seal the oil-tight between said annular sealing member is the first oil passage and the second oil passage An oil passage coupling device for a vehicle that is fitted into the inner peripheral surface of the opening while being slid in the axial direction and connects the first oil passage and the second oil passage,
Rotation that is provided at an intermediate portion in the axial direction of the cylindrical member, and that an operation force for rotating the cylindrical member around the axial center is applied via a rotation operation jig that cannot rotate relative to the cylindrical member. An oil passage coupling device for vehicles, comprising an operation unit.   At least one of the first case and the second case has a hole through which an intermediate portion in the axial direction of the cylindrical member can be visually recognized in a state where the first case and the second case are assembled to each other. The vehicle oil passage coupling device according to claim 1, wherein: The rotation operation jig is detachably engaged with the rotation operation unit,
3. The vehicle oil according to claim 2, wherein the hole functions as a jig insertion hole for inserting the rotation operation jig in a state where the first case and the second case are assembled to each other. Road coupling device.   4. The vehicle oil passage coupling device according to claim 3, wherein the rotation operation unit has a shape that is relatively non-rotatable and detachably engageable with the rotation operation jig.   5. The vehicular oil passage coupling device according to claim 4, wherein the rotation operation unit is formed so that a cross-sectional shape orthogonal to an axis of the cylindrical member is a polygon.   5. The vehicle oil passage coupling device according to claim 4, wherein the rotation operation portion has an engagement hole that engages with the rotation operation jig so as not to be relatively rotatable.

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