JP7344792B2 - Oil passage structure - Google Patents

Description

The present invention relates to an oil passage structure for cooling an electric motor provided in a vehicle.

In recent years, it has been equipped with two electric motors: a first electric motor (MG1) for power generation and a second electric motor (MG2) for drive.The first electric motor is driven by an engine to generate electricity, and the second electric motor Hybrid vehicles (series hybrid vehicles) that are driven by two electric motors and run are provided. As a device for cooling the electric motor of such a hybrid vehicle, Patent Document 1 listed below discloses a cooling device for cooling the electric motor.

JP2017-61226A

By the way, for example, in the above-mentioned transaxle of a hybrid vehicle, etc., a casing having an internal space is formed by combining a plurality of components, and an oil passage is formed using a hole provided in this casing. There is. When constructing an oil passage using such perforations, a method of connecting the parts forming the oil passage using other members such as gaskets, O-rings, and plugs may be considered, for example. However, if these members are used, the number of parts increases accordingly, leading to an increase in cost and weight, and there are concerns that various problems will occur.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an oil passage structure in which an oil passage formed in a structure constituting an internal space can be connected and communicated with or closed off without using other members such as plugs. And so.

(1) The oil passage structure of the present invention includes a structure A in which an oil passage forming part a forming an oil passage is provided, and an oil passage forming part b capable of forming an oil passage by a combination with the oil passage forming part a. and a structure B capable of forming an internal space by being fastened to the structure A, the oil passage is inside the internal space, and the structure A and the structure B It is formed at a position adjacent to the inner side of at least one edge of the oil passage forming part a and the edge of the structure A, and between the oil passage forming part b and the edge of the structure A. A gap is provided between at least one of the edges of the structure B, and by fastening the structure A and the structure B, the oil passage structure parts a and It is characterized in that it is connected to the oil passage forming part b in contact therewith.

In the oil passage structure of the present invention, the oil passage forming part b provided in the structure B is provided at a position corresponding to the oil passage forming part a provided in the structure A. Therefore, by fastening the structure A and the structure B, the oil passage components a and b provided in the structures A and B can be connected. Therefore, according to the oil passage structure of the present invention, the oil passage can be formed without using other members such as a plug. This reduces the number of parts required to block the oil passage, contributing to lower costs and weight.

Further, in the oil passage structure of the present invention, the oil passage is formed within the internal space constituted by the structure A and the structure B. Therefore, even if oil oozes out from the portion connected to form an oil passage, the possibility of this oil leaking out of the internal space formed by structure A and structure B is extremely low. Therefore, according to the present invention, it is possible to provide an oil passage structure in which sufficient consideration is given to the leakage of oil at the blocked portion of the oil passage.

The above-mentioned oil passage structure has an oil passage structure in which the construction body A and the construction body B are fastened with the edge of the construction body A and the edge of the construction body B abutting each other to form the oil passage. At least one of the parts a and b is provided at a position away from the edges of the structures A and B to the inside of the internal space. That is, a gap is provided between at least one of the oil passage forming part a and the edge of the structure A, and between the oil passage forming part b and the edge of the structure B. Therefore, in the oil passage structure of the present invention, even if oil oozes out from the blocked portion of the oil passage, there is a very low possibility that it will leak beyond the edges of structure A and structure B to the outside of the internal space. . Therefore, according to the present invention, it is possible to provide an oil passage structure in which more consideration is given to oil seepage at the blocked portion of the oil passage.

(2) In the oil passage structure described above, a hole forming an oil passage is provided in one of the structure A and the structure B, and a position corresponding to the hole in the other of the structure A and the structure B. The perforation may be characterized in that a closing part is provided for closing the perforation, and the perforation is closed by the closing part inside the internal space.

According to this configuration, the oil passage can be closed without using other members such as a plug. This increases the degree of freedom in the layout of the oil passage structure, reduces the number of parts required to block the oil passage, and contributes to cost and weight reductions.

Additionally, as mentioned above, when a hole forming an oil passage is blocked by a blockage part, there is a possibility that relatively high pressure from the oil flowing through the oil passage will act on the blockage part, causing oil to seep out compared to other parts. It may be easier to get it out. However, in the above-mentioned oil passage structure, since the oil passage component a and the oil passage component b are in contact with each other and connected inside the internal space, even if oil oozes out at the blocked part, However, leakage to the outside can be prevented from occurring.

(5) The oil passage structure described above is characterized in that a fastener for fastening the structure A and the structure B is arranged at a position adjacent to the outside of the internal space with respect to the closing part. It's good if it's something.

According to this configuration, it is possible to further improve the degree of adhesion of the blocking portion to the oil passage. Therefore, according to the configuration described above, it is possible to provide an oil passage structure with high blocking ability.

(6) In the above-mentioned oil passage structure, it is preferable that the portion of the structure B in which the blocking portion is provided is built up.

According to this configuration, sufficient strength of the blocking portion can be ensured, and an oil passage structure capable of firmly closing the oil passage can be provided.

(7) Moreover, the oil passage installed in a vehicle etc. has a structure A and a structure B that can form an internal space by being fastened to the structure A, and the structure A has a structure B that can form an internal space. The structure B has an oil passage component a in which perforations forming an oil passage are formed, and the structure B places an oil passage constitution part b in which perforations forming an oil passage are formed at a position corresponding to the oil passage formation part a. By fastening the structure A and the structure B, the perforation of the oil passage structure part a and the perforation of the oil passage structure part b communicate with each other inside the internal space. It is possible to provide a connecting structure for a road.

In the oil passage connection structure described above, the oil passage forming part b of the structure B is provided at a position corresponding to the oil passage forming part a of the structure A. Therefore, by fastening the structure A and the structure B, the perforations of the oil passages provided in the oil passage components a and b can be made to communicate with each other. Therefore, according to the oil passage connection structure described above, the oil passages can be connected so as to communicate without using other members such as plugs. This reduces the number of parts required to connect oil passages, contributing to cost and weight reductions.

Further, in the above-described oil passage connection structure, the oil passages communicate within the internal space constituted by the structure A and the structure B. Therefore, even if oil oozes out in the communication portion of the oil passage, the possibility of this oil leaking out of the internal space formed by the structure A and the structure B is extremely low. Therefore, according to the present invention, it is possible to provide an oil passage connection structure that takes sufficient consideration to oil leakage in the communication portion of the oil passage.

According to the present invention, it is possible to provide an oil passage structure in which an oil passage formed in a structure forming an internal space can be closed without using other members such as a plug.

FIG. 1 is a schematic diagram showing a transaxle including an oil passage structure according to an embodiment of the present invention. FIG. 2 is a side view showing a gear chamber of the transaxle of FIG. 1; FIG. 2 is a front side view of the transaxle of FIG. 1; FIG. 2 is a left side view of the transaxle of FIG. 1; FIG. 2 is a conceptual diagram in a side view showing the oil passage structure of FIG. 1. FIG. 2 is a plan view showing an upstream oil passage and a downstream oil passage of the oil passage structure of FIG. 1. FIG. FIG. 2 is a perspective view showing a first structure forming the transaxle of FIG. 1; FIG. 2 is a perspective view showing a second structure forming the transaxle of FIG. 1;

Hereinafter, an oil passage structure 10 including an oil passage blocking structure X and a connection structure Y according to an embodiment of the present invention, and a transaxle 1 including the same will be described with reference to the drawings. In the following description, after explaining the overall configuration of the transaxle 1 and the oil passage structure 10, a description will be given of a portion including the closing structure X and the connection structure Y, which are characteristic parts of the oil passage structure 10.

In the following description, the vertical direction when the transaxle 1 is mounted on the vehicle V will be simply referred to as the "vertical direction H." In addition, in the vertical direction H, the upper side will be simply referred to as "upper Up" and the lower side will be simply referred to as "lower Lw".

Furthermore, in the following description, when the transaxle 1 is mounted on the vehicle V, the longitudinal direction of the vehicle V will be simply referred to as "the longitudinal direction X." Further, in the front-rear direction X, the front will be simply referred to as "front Fr" and the rear will be simply referred to as "rear Rr".

Furthermore, in the following description, when the transaxle 1 is mounted on the vehicle V, the width direction of the vehicle V will be simply referred to as the "width direction W".

The transaxle 1 is provided in a vehicle V shown in FIG. The vehicle V is provided with an engine (not shown) and a battery (not shown). The vehicle V is capable of running by using an engine as a power source to drive a first electric motor 20 (described later), and by driving a second electric motor 30 (described later) by the driving of the first electric motor 20, and by stopping the engine and discharging the battery. The vehicle is a so-called series hybrid vehicle that can be driven by using the second electric motor 30 as a power source to travel (EV travel).

As shown in FIG. 1, the transaxle 1 includes a transaxle housing 40 provided with an electric motor 18, a differential mechanism 32, and the like. The transaxle 1 includes a first electric motor 20 (electric motor) and a second electric motor 30 (electric motor) as the electric motors 18. The transaxle 1 also includes an oil pump 60, a partition plate 61 (partition), an oil pump body 62, a relief valve 63 (pressure adjustment device), a strainer 64, an oil cooler 70, a cooling pipe 90, and the like.

The first electric motor 20 (MG1) is composed of a motor generator including a rotor having a rotor shaft and a stator. A generator controller including an inverter and the like is connected to the first electric motor 20. Although not shown, the generator controller is mounted on the upper part of the transaxle 1. The AC power output from the first electric motor 20 is converted into DC power by the generator controller, and the DC power is supplied to the battery, thereby charging the battery. The first electric motor 20 is driven by rotational power transmitted by an engine (not shown).

The second electric motor 30 (MG2) is composed of a motor generator including a rotor having a rotor shaft and a stator. A motor controller including an inverter and the like is connected to the second electric motor 30. Although not shown, the generator controller is mounted on the upper part of the transaxle 1. A battery is connected to the motor controller. The DC power output from the battery is supplied to the motor controller, the DC power is converted to AC power by the motor controller, and the AC power is supplied to the second electric motor 30, thereby driving the second electric motor 30. .

The differential mechanism 32 is configured to allow differential movement between a pair of left and right drive shafts (not shown) that drive left and right drive wheels, and to transmit rotational power to the pair of left and right drive shafts. . As shown in FIG. 1, the differential mechanism 32 includes a plurality of gears including a differential ring gear 32a and a differential gear 32b. The differential mechanism 32 operates by transmitting the power of the second electric motor 30 transmitted through a plurality of gears to the differential ring gear 32a, and can transmit power to the drive wheels 2. Thereby, the drive wheels 2 can be rotated and the vehicle V can be driven.

The transaxle housing 40 (case body) is a housing body for housing the first electric motor 20, the second electric motor 30, and the like. As shown in FIG. 1, the transaxle housing 40 (case body) forms a single container by fastening a plurality of structural members. In this embodiment, the transaxle housing 40 is formed by fastening and integrating three structures, which are a first structure 40a, a second structure 40b, and a third structure 40c.

As shown in FIG. 1, the first component 40a forms an intermediate portion in the width direction W of the transaxle housing 40. As shown in FIG. 1, a partition wall 43 is formed in the first structure 40a, and the partition wall 43 partitions a space that will become the motor chamber 41 and a space that will become the gear chamber 42. Moreover, the second structure 40b is fastened to the motor chamber 41 side of the first structure 40a. Furthermore, the third structure 40c is fastened to the gear chamber 42 side.

As described above, the internal space of the transaxle housing 40 is partitioned into the motor chamber 41 and the gear chamber 42 by the partition wall 43. As shown in FIG. 1, the motor chamber 41 houses the first electric motor 20 and the second electric motor 30. The gear chamber 42 accommodates the differential mechanism 32 and the like.

Further, oil is accommodated inside the transaxle housing 40. Specifically, as shown in FIG. 2, when the gear chamber 42 of the transaxle 1 is viewed from the side, an oil storage section 50 is provided at the bottom on the gear chamber 42 side. The oil storage section 50 stores oil that circulates through an oil path 100, which will be described later. A strainer 64 is arranged in the oil storage section 50. Further, an oil pump 60 is installed above the oil storage section 50. Thereby, the oil stored in the oil storage section 50 can be pumped up by the oil pump 60 and sent to the downstream side.

The oil cooler 70 is a heat exchanger that exchanges heat between oil and water (water-cooled cooler). As shown in FIG. 3, the oil cooler 70 has a substantially square appearance when viewed from the side from the front Fr side. As shown in FIG. 3, the oil cooler 70 is provided with an oil inlet 70a that serves as an inlet for oil, and an oil outlet 70b that serves as an outlet for oil. The oil cooler 70 is also provided with water inlets and outlets 70c and 70d for cooling the oil.

As shown in FIG. 3, the oil inlet 70a and oil outlet 70b of the oil cooler 70 are provided at diagonal positions of the oil cooler 70. Further, the oil inlet 70a and the oil outlet 70b are arranged along the vertical direction H when the transaxle 1 is mounted on the vehicle V.

The cooling pipe 90 is a pipe member for cooling the electric motor 18 by jetting oil. Cooling pipe 90 is provided in motor chamber 41 within transaxle housing 40 . As shown in FIG. 5, the cooling pipe 90 includes a first cooling pipe 91 provided above the first electric motor 20 and a second cooling pipe 92 provided above the second electric motor 30. The cooling pipe 90 (first cooling pipe 91, second cooling pipe 92) is provided with an oil spout 93, and the oil supplied to the cooling pipe 90 is directed from the oil spout 93 toward each electric motor 18. The water can be ejected in the form of a shower to cool each electric motor 18.

<About the oil passages that make up the oil passage structure>
Next, the oil passage structure 10 will be explained. The oil passage structure 10 is formed to cool each electric motor 18 (first electric motor 20 (MG1), second electric motor 30 (MG2)) in the transaxle 1 with oil. The oil passage 100 forming the oil passage structure 10 will be described below.

The oil passage 100 is roughly divided into an internal oil passage 100a and an external oil passage 100b. The internal oil passage 100a is formed by forming a through hole (perforation) in the transaxle housing 40 or by forming a recess in the transaxle housing 40 and closing the recess with another member to form an oil flow path. It is something that exists. Further, the external oil passage 100b forms an oil flow passage using a member (for example, a pipe member, etc.) different from the transaxle housing 40.

As shown in FIG. 5, in the oil passage structure 10, the oil in the oil reservoir 50 is pumped upward by the oil pump 60 via the strainer 64. As shown in FIG. 5, the oil pumped up by the oil pump 60 is guided to an internal oil passage 100a formed so as to bypass the outside of the first electric motor 20 via the oil pump 60, and reaches the oil cooler 70. do.

The oil flowing out from the oil cooler 70 is distributed to both sides of the electric motor 18 in the axial direction G, and is further distributed into branches. Specifically, the oil flowing out from the oil cooler 70 is transferred to a first supply path 111 that goes to the upper side of the first electric motor 20, a second supply path 112 that goes to the upper side of the second electric motor 30, and a first supply path 112 that goes to the upper side of the second electric motor 30. It is distributed into three paths including a third supply path 113 toward the rotor shaft 24 of the electric motor 20.

In this manner, in the oil passage structure 10, the oil pump 60 pumps oil toward the oil cooler 70, and the oil (cooled oil) flowing out from the oil cooler 70 is distributed to a plurality of locations.

The first supply path 111 is connected to the first cooling pipe 91 and serves as an oil supply path for cooling the first electric motor 20 . Further, the second supply path 112 is connected to the second cooling pipe 92 and serves as an oil supply path for cooling the second electric motor 30.

As shown in FIG. 4, the third supply path 113 is a path that is inclined from the upper side Up to the lower side Lw on the side of the transaxle housing 40 (the side on the motor chamber 41 side), and A path having a bend along the axial direction G of the rotor shaft 24 is formed in the mounting portion 46 of the electric motor 20 .

In this way, in the oil passage structure 10 of this embodiment, the oil cooled by one oil cooler 70 is divided into a path for cooling each electric motor 18 from above and a path for cooling the first electric motor 20 from inside. It is being distributed.

Here, in the oil passage structure 10 described above, a structure (connection structure Y) is used in which the through holes (perforations) forming the oil passage 100 are communicated at the boundaries of each structure forming the transaxle housing 40, and each structure The internal oil passage 100a is formed by closing the through hole (perforation) forming the oil passage 100 at the boundary of the body (closed structure X). For example, in the oil passage structure 10 of this embodiment, the closing structure X and the connection structure Y are employed in the internal oil passage 100a provided so as to face the circumferential surface of the first electric motor 20. The closing structure X is employed in the circumferential oil passage 120 that constitutes the lower oil passage 101 of the internal oil passage 100a. As shown in FIG. 6 and the like, the circumferential oil passage 120 is an oil passage that is provided at a position facing the circumferential surface of the first electric motor 20 and has a portion extending in the axial direction G. The connection structure Y is employed in the circumferential oil passage 121 that constitutes the upper oil passage 102 of the internal oil passage 100a. The circumferential surface oil passage 121 is provided at a position facing the circumferential surface of the first electric motor 20 and has a portion extending in the axial direction G. This will be explained in more detail below.

The peripheral oil passage 120 connects an edge 130a (see FIG. 7) of the first structure 40a (structure A) and an edge 130b (see FIG. 8) of the second structure 40b (structure B). This is an oil passage formed inside an internal space that is abutted and fastened using fasteners such as bolts. As shown in FIGS. 6 and 7, the first structure 40a is provided with an oil passage configuration part 132 (oil passage configuration part a) that constitutes the peripheral surface side oil passage 120. The oil passage forming part 132 has a perforation 134 formed in the axial direction G. Further, as shown in FIG. 6, the first structure 40a has a perforation 135 extending in a direction intersecting the axial direction G, which communicates with the perforation 134 at an intermediate portion of the oil passage forming part 132. It is formed. The perforation 135 is formed to reach a connection port connected to the oil inlet 70a of the oil cooler 70. As shown in FIG. 7, the oil passage forming portion 132 is formed in a floating island shape in the first structure 40a. Specifically, the oil passage forming part 132 is located away from the edge 130a of the first structure 40a inside the internal space. That is, a gap 136 formed by a groove, a notch, or the like exists between the oil passage forming portion 132 and the edge 130a.

Moreover, as shown in FIG. 8, the second structure 40b has a closing part structure part 138 (oil path structure part b) at a position corresponding to the oil path structure part 132 of the first structure 40a. The closing portion forming portion 138 is formed so as to face the first structure 40a side in a state where the first structure 40a and the second structure 40b are butted and integrated. The distal end portion of the closing portion forming portion 138 functions as a closing portion 140 that closes the perforation 134f provided in the oil passage forming portion 132 inside the internal space. The closing portion forming portion 138 is formed in the shape of a floating island in the second structure 40b. Specifically, the closing portion constituting portion 138 is located away from the edge 130b of the second structure 40b toward the inside of the internal space. That is, a gap 142 formed by a groove, a notch, or the like exists between the closing portion forming portion 138 and the edge portion 130b. Further, as shown in FIG. 6, the second structure 40b is built up in the closing portion forming portion 138. As shown in FIG.

As shown in FIG. 6, the peripheral surface side oil passage 120 is connected to the perforation 134 of the oil passage forming part 132 provided on the first structure 40a side by the closing part 140 provided on the second structure 40b side described above. It has a closed structure X that closes off. Further, as described above, the perforation 134 is in communication with the perforation 135 that leads to the connection port with the oil cooler 70 in the middle. Therefore, the peripheral surface side oil passage 120 is bent at the middle part of the perforation 134 provided in the first component 40a, and the oil can flow through the path reaching the oil inlet 70a of the oil cooler 70 via the perforation 135. This is a possible oil route.

Similarly to the circumferential oil passage 120 described above, the peripheral oil passage 121 includes an edge 130a of the first structure 40a (structure A) and an edge 130b of the second structure 40b (structure B). This is an oil passage formed inside an internal space formed by abutting the two parts and fastening them with a fastener such as a bolt. As shown in FIG. 7, the first structure 40a is provided with an oil passage forming part 150 that forms the circumferential oil passage 121. As shown in FIG. As shown in FIGS. 6 and 7, the oil passage forming portion 150 has a perforation 154 formed in the axial direction G. As shown in FIGS. Further, as shown in FIG. 6, the first structure 40a has a perforation 155 that extends in a direction crossing the axial direction G and communicates with the perforation 154 at an intermediate portion of the oil passage forming part 150. It is formed. The perforation 155 is formed to reach a connection port connected to the oil outlet 70b of the oil cooler 70. As shown in FIG. 7, the oil passage forming part 150 is formed in a floating island shape in the first structure 40a, similar to the oil passage forming part 132 described above. Specifically, the oil passage forming part 150 is located away from the edge 130a of the first structure 40a inside the internal space. That is, a gap 156 formed by a groove, a notch, or the like exists between the oil passage forming part 150 and the edge 130a.

Moreover, as shown in FIG. 8, the second structure 40b has an oil passage forming part 158 at a position corresponding to the oil passage forming part 150 of the first structure 40a. The oil passage forming portion 158 is formed so as to face the first structure 40a side in a state where the first structure 40a and the second structure 40b are butted and integrated. The oil passage forming portion 158 is provided with a perforation 160 formed in the axial direction G. The oil passage forming part 158 is formed in a floating island shape in the second structure 40b, similar to the above-mentioned closing part forming part 138. Specifically, the oil passage forming part 158 is located away from the edge 130b of the second structure 40b inside the internal space. That is, a gap 162 formed by a groove, a notch, or the like exists between the oil passage forming portion 158 and the edge portion 130b.

The circumferential oil passage 121 has the oil passage constituting parts 150 and 158 of the first constituting body 40a and the second constituting body 40b in contact with each other at their tips, so that the perforations 154 and 160 formed in both communicate with each other. By forming the connecting structure Y, it is configured as a series of oil passages. Further, as described above, the perforation 154 is in communication with the perforation 155 which leads to the connection port with the oil cooler 70 in the middle. Therefore, the circumferential oil passage 121 is an oil passage through which the oil returned from the oil cooler 70 can flow through a path that is divided into the first supply passage 111 and the third supply passage 113.

As described above, in the oil passage closing structure X of the present embodiment, the closing part 140 provided in the second structure 40b is connected to the oil passage (oil passage forming part 132) provided in the first structure 40a. It is located at a position corresponding to Therefore, by fastening the first structure 40a and the second structure 40b, the oil passage hole 134 provided in the first structure 40a can be closed by the closing part 140. Therefore, according to the above-mentioned closing structure X, the oil passage can be closed without using other members such as a plug. This reduces the number of parts required to close the perforations 134 forming the circumferential oil passage 120, contributing to cost and weight reductions.

Moreover, in the closure structure X described above, the perforation 134 is closed in the internal space formed by the first structure 40a and the second structure 40b. Therefore, even if oil oozes out from the blocked portion of the oil passage, the possibility of this oil leaking out of the internal space formed by the first structure 40a and the second structure 40b is extremely low.

In the oil passage closing structure X having the above-described configuration, the oil passage forming part 132 forming the circumferential oil passage 120 and the blocking part forming part 138 forming the blocking part 140 are the first structure 40a and the second structure, respectively. It is provided at a position away from the edges 130a, 130b of 40b inside the internal space. Specifically, the oil passage closing structure X described above is configured such that the closing portion 140 and the edge 130b of the second structure 40b are separated via a gap 142. In addition, in the oil passage blocking structure 136. Therefore, in the oil passage blocking structure X, even if oil oozes out from the blocked portion of the circumferential oil passage 120, it will not exceed the edges 130a, 130b of the first structure 40a and the second structure 40b. The possibility of leakage outside the internal space is extremely low.

In addition, in this embodiment, an example was shown in which the closing structure It is not limited to. For example, the closure structure X may be provided at the edges 130a, 130b of the first structure 40a and the second structure 40b.

Further, in the oil passage closure structure X described above, the fastener such as a bolt that fastens the first structure 40a and the second structure 40b is fastened to the blockage part 140 at a position adjacent to the outside of the internal space. It is assumed that Therefore, the closeness of the closing part 140 to the perforation 134 of the oil passage forming part 132 forming the oil passage can be increased, and the closing ability can be improved.

Note that in this embodiment, a configuration is illustrated in which the first structure 40a and the second structure 40b are fastened to the closure part 140 at a position adjacent to the outside of the internal space using a fastener such as a bolt, but the present invention is not limited to this. That is, a configuration may be adopted in which the first structure 40a and the second structure 40b are fastened at a position outside the vicinity of the closing portion 140.

Further, in the oil passage closing structure X described above, in the second structure 40b, the closing portion forming portion 138 in which the closing portion 140 is provided is built up. Therefore, according to the above-described configuration, the strength of the closing portion 140 can be ensured sufficiently, and the oil passage can be firmly closed. In addition, in this embodiment, an example was shown in which build-up was applied to the closing portion constituting portion 138, but the present invention is not limited to this. That is, a structure may be adopted in which no build-up is applied to the closing part forming part 138, or a structure in which the closing part forming part 138 is reinforced by another structure.

Further, as described above, in the oil passage structure 10 of this embodiment, the perforations 154 and 160 forming the circumferential oil passage 121 are connected by the connection structure Y so as to communicate with each other. Therefore, even if oil oozes out from the communication portion of the peripheral oil passage 121, there is a very high possibility that this oil will leak out of the internal space formed by the first structure 40a and the second structure 40b. low.

The present invention is not limited to the embodiments and modifications described above, and other embodiments are possible within the scope and spirit of the invention without departing from the scope of the claims. The components of the embodiments described above may be arbitrarily selected and combined. Further, any component of the embodiment and any component described in the means for solving the invention or a component embodying any component described in the means for solving the invention may be arbitrarily combined. It may be configured as follows.

The oil passage blocking structure of the present invention can be suitably used to close an appropriate oil passage, such as an oil passage formed in a transaxle mounted on a vehicle, for example.

40a: First construct (construct A)
40b: Second construct (construct B)
42: Gear chamber 120: Circumferential oil passage 121: Circumferential oil passage 130a: Edge 130b: Edge 130c: Edge 132: Oil passage forming part (oil passage forming part a)
134: Perforation 136: Gap 138: Closure component (oil passage component b)
140: Closure part 142: Gap 150: Oil passage forming part (oil passage forming part a)
154: Perforation 158: Oil passage configuration part (oil passage configuration part b)
160: Perforation X: Closed structure Y: Connected structure

Claims (3)

a structure A that is provided with an oil passage component a that forms an oil passage and that forms a case body;
An oil passage forming part b that can form an oil passage in combination with the oil passage forming part a, and a structure B that can form a case body having an internal space by being fastened to the structure A. death,
The oil passage is formed inside the internal space at a position adjacent to the inside of an edge of at least one of the structure A and the structure B,
between the oil passage constituting part a that is formed integrally with the inner side surface of the structure A and the edge of the structure A; and the oil passage that is formed integrally with the inner side surface of the structure B. A gap is provided between the component b and the edge of the component B,
By fastening the structure A and the structure B, the mating surfaces of the oil passage structure part a and the oil passage structure part b are brought into contact and connected inside the internal space,
A perforation forming an oil passage is provided in one of the structure A and the structure B,
The other of the structural body A and the structural body B is provided with a closing part that closes the perforation at a position corresponding to the perforation, and the part where the closing part is provided is built up,
The perforation is closed by the closing part inside the internal space,
The gap is provided around the entire circumference of the mating surfaces of the oil passage forming part a and the oil passage forming part b, and is provided so as to communicate with the inside of the case body around the closed part. ,
An oil passage structure characterized by a fastener for fastening the structure A and the structure B is arranged at a position adjacent to the outside of the internal space with respect to the closing part;
The oil passage structure according to claim 1, characterized in that: The oil passage forming part a has a first perforation forming an oil passage,
The oil passage forming part b has a second perforation forming an oil passage at a position corresponding to the first perforation ,
By fastening the structure A and the structure B, the first perforation of the oil passage forming part a and the second perforation of the oil passage forming part b communicate with each other inside the internal space. The oil passage structure according to claim 1 or 2, further comprising an oil passage connection structure.

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