JP2021104765A - Oil passage structure - Google Patents

Abstract

To provide an oil passage structure which enables blockage and connection of an oil passage formed on a structure constituting an internal space without using other member such as a plug.SOLUTION: An oil passage structure has a first structure provided with a hole forming an oil passage and a third structure capable of forming an internal space by being coupled to the first structure. In the space formed with a peripheral surface side oil passage, a blocking part 140 is provided at a position corresponding to the hole forming an oil passage of the first structure in the third structure, and the hole is blocked with the blocking part 140 inside the internal space.SELECTED DRAWING: Figure 8

Description

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

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

Japanese Unexamined Patent Publication No. 2017-61226

By the way, for example, in the transaxle of a hybrid vehicle described above, a casing having an internal space is formed by combining a plurality of components, and an oil passage is formed by using the perforations provided in the casing. There is. When the oil passage is formed by using such a perforation, a method of connecting the portions forming the oil passage by using other members such as a gasket, an O-ring, and a plug can be considered. However, if these members are used, the number of parts increases by that amount, which may lead to various problems such as an increase in cost and weight.

Therefore, an object of the present invention is to provide an oil passage structure capable of connecting oil passages formed in a structure constituting an internal space without using other members such as plugs to communicate or close the oil passages. And said.

(1) In the oil passage structure of the present invention, an oil passage constituent portion b capable of forming an oil passage by combining a component A provided with an oil passage constituent portion a forming the oil passage and the oil passage constituent portion a. The component A and the component B are provided, and the component B is capable of forming an internal space by being fastened to the component A, and the oil passage is inside the internal space. It is formed at a position adjacent to the inside of at least one of the edges of the above, between the oil passage component a and the edge of the component A, and with the oil passage component b. A gap is provided in at least one of the edges of the structure B, and by fastening the structure A and the structure B, the oil passage component a and the oil passage component a and the inside of the internal space are fastened to each other. It is characterized in that the oil passage component b is in contact with the oil passage component b and is connected to the oil passage component b.

In the oil passage structure of the present invention, the oil passage constituent portion b provided in the constituent body B is provided at a position corresponding to the oil passage constituent portion a provided in the constituent body A. Therefore, by fastening the constituent body A and the constituent body B, the oil passage constituent portions a and b provided in the constituent bodies 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. As a result, the number of parts required for blocking the oil passage can be reduced, which can contribute to cost reduction and weight reduction.

Further, in the oil passage structure of the present invention, an oil passage is formed in the internal space composed of the constituent body A and the constituent body B. Therefore, even if the oil seeps out at the portion connected for forming the oil passage, it is extremely unlikely that the oil leaks to the outside of the internal space formed by the constituent A and the constituent B. Therefore, according to the present invention, it is possible to provide an oil passage structure in which sufficient consideration is given to oil seepage at a closed portion of the oil passage.

In the above-mentioned oil passage structure, the structure A and the structure B are fastened to form the oil passage in a state where the edge portion of the structure A and the edge portion of the structure B are butted against each other. At least one of the parts a and b is provided at a position separated from the edges of the structures A and B inside the internal space. That is, a gap is provided at least one of the oil passage constituent portion a and the edge portion of the constituent body A and the oil passage constituent portion b and the edge portion of the constituent body B. Therefore, in the oil passage structure of the present invention, even if oil oozes out at the closed portion of the oil passage, it is extremely unlikely that the oil will leak out of the internal space beyond the edges of the constituent A and the constituent B. .. Therefore, according to the present invention, it is possible to provide an oil passage structure in which further consideration is given to oil seepage at a closed portion of the oil passage.

(2) In the above-mentioned oil passage structure, a perforation forming an oil passage is provided in one of the structure A and the structure B, and a position corresponding to the perforation is provided in the other of the structure A and the structure B. Is provided with a closing portion for closing the perforation, and the perforation may be closed by the closing portion inside the internal space.

According to such a configuration, the oil passage can be closed without using other members such as a plug. As a result, the degree of freedom in the layout of the oil passage structure is improved, the number of parts required for closing the oil passage is reduced, and it is possible to contribute to cost reduction and weight reduction.

Further, as described above, when the perforation forming the oil passage is closed by the closing portion, a relatively high pressure due to the oil flowing through the oil passage may act on the closing portion, and the oil oozes as compared with other parts. It may be easy to put out. However, in the above-mentioned oil passage structure, since the oil passage constituent portion a and the oil passage constituent portion b are in contact with each other and connected to each other inside the internal space, it is assumed that oil seepage occurs in the closed portion. However, it is possible to suppress the occurrence of leakage to the outside.

(5) The above-mentioned oil passage structure is characterized in that the 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 closed portion. It should be a thing.

According to such a configuration, the degree of adhesion of the closed portion to the oil passage can be further improved. Therefore, according to the above-described configuration, it is possible to provide an oil channel structure having a high closing capacity.

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

According to such a configuration, the strength of the closed portion can be sufficiently ensured, and an oil passage structure capable of firmly closing the oil passage can be provided.

(7) Further, the oil passage mounted on the vehicle or the like has a structure A and a structure B capable of forming an internal space by being fastened to the structure A, and the structure A has a structure A. It has an oil passage constituent portion a in which a perforation forming an oil passage is formed, and the structure B positions an oil passage constituent portion b in which a perforation forming an oil passage is formed so as to correspond to the oil passage constituent portion a. By fastening the structure A and the structure B to the oil, the perforation of the oil passage component a and the perforation of the oil passage component b are communicated with each other inside the internal space. It is possible to have a road connection structure.

In the above-described oil channel connecting structure, the oil channel component b of the component B is provided at a position corresponding to the oil channel component a of the component A. Therefore, by fastening the constituent body A and the constituent body B, the perforations of the oil passages provided in the oil passage constituent portions a and b can be communicated with each other. Therefore, according to the above-mentioned oil passage connecting structure, the oil passages can be connected so as to communicate with each other without using other members such as plugs. As a result, the number of parts required for connecting the oil passage can be reduced, which can contribute to cost reduction and weight reduction.

Further, in the above-mentioned oil passage connecting structure, the oil passages communicate with each other in the internal space composed of the constituent body A and the constituent body B. Therefore, even if the oil seeps out at the communication portion of the oil passage, it is extremely unlikely that the oil leaks out of the internal space formed by the constituent A and the constituent B. Therefore, according to the present invention, it is possible to provide an oil passage connecting structure in which sufficient consideration is given to oil seepage at the communicating portion of the oil passage.

According to the present invention, it is possible to provide an oil passage structure capable of closing an oil passage formed in a structure constituting an internal space without using other members such as a plug.

It is a schematic diagram which shows the transaxle provided with the oil passage structure which concerns on embodiment of this invention. It is a side view which shows the gear chamber of the transaxle of FIG. It is a side view of the transaxle of FIG. 1 on the front side. It is a left side view of the transaxle of FIG. It is a conceptual diagram in the side view which shows the oil passage structure of FIG. It is a top view which shows the upstream side oil passage and the downstream side oil passage of the oil passage structure of FIG. It is a perspective view which shows the 1st structure which comprises the transaxle of FIG. It is a perspective view which shows the 2nd structure which comprises the transaxle of FIG.

Hereinafter, the oil passage structure 10 provided with the oil passage blocking structure X and the connecting structure Y according to the embodiment of the present invention, and the transaxle 1 provided with the same will be described with reference to the drawings. In the following description, the overall configuration of the transaxle 1 and the oil passage structure 10 will be described, and then the portion including the closed structure X and the connecting structure Y, which are the characteristic parts of the oil passage structure 10, will be described.

Further, in the following description, the vertical direction in the state where the transaxle 1 is mounted on the vehicle V will be described simply as "vertical direction H". Further, in the vertical direction H, the upper part is simply referred to as "upper Up" and the lower side is simply referred to as "lower Lw".

Further, in the following description, in a state where the transaxle 1 is mounted on the vehicle V, the front-rear direction of the vehicle V is simply described as "front-rear direction X". Further, in the front-rear direction X, the front is simply referred to as "forward Fr" and the rear is simply referred to as "rear Rr".

Further, in the following description, in a state where the transaxle 1 is mounted on the vehicle V, the width direction of the vehicle V is simply described as "width direction W".

The transaxle 1 is provided in the 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 traveling by driving the first electric motor 20 described later by using the engine as a power source and driving the second electric motor 30 described later by driving the first electric motor 20, and stopping the engine to drive a battery. It is a so-called series type hybrid vehicle that can be driven by using the above as a power source to drive the second electric motor 30 to travel (EV traveling).

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

The first electric motor 20 (MG1) includes a motor generator including a rotor having a rotor shaft and a stator. A generator controller with a built-in inverter or 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 to charge the battery. The first electric motor 20 is driven by transmitting rotational power by driving an engine (not shown).

The second motor 30 (MG2) includes a motor generator including a rotor having a rotor shaft and a stator. A motor controller incorporating an inverter or the like is connected to the second 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 into AC power by the motor controller, and the AC power is supplied to the second electric motor 30 to drive the second electric motor 30. ..

The differential mechanism 32 is configured to allow differential between a pair of left and right drive shafts (not shown) that drive the 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 motor 30 transmitted via the plurality of gears to the differential gear 32a, and can transmit the power to the drive wheels 2. As a result, the drive wheels 2 can be rotated and the vehicle V can be driven.

The transaxle housing 40 (case body) is an accommodating body for accommodating 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 one housing body by fastening a plurality of constituent members. In the present embodiment, the transaxle housing 40 is integrated by fastening three components including the first structure 40a, the second structure 40b, and the third body 40c.

As shown in FIG. 1, the first structure 40a forms an intermediate portion in the width direction W in the transaxle housing 40. As shown in FIG. 1, a partition wall 43 is formed in the first component 40a, and the partition wall 43 divides the space serving as the motor chamber 41 and the space serving as the gear chamber 42. Further, the second component 40b is fastened to the motor chamber 41 side of the first body 40a. Further, the third component 40c is fastened to the gear chamber 42 side.

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

Further, oil is stored 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 portion 50 is provided at the bottom of the gear chamber 42 side. The oil storage section 50 stores oil that circulates in the oil passage 100, which will be described later. A strainer 64 is arranged in the oil storage unit 50. Further, an oil pump 60 is incorporated above the oil storage unit 50. As a result, the oil stored in the oil storage unit 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 front Fr side. As shown in FIG. 3, the oil cooler 70 is provided with an oil inlet 70a serving as an oil inlet and an oil outlet 70b serving as an oil outlet. Further, the oil cooler 70 is provided with water inlets / outlets 70c and 70d for cooling the oil.

As shown in FIG. 3, the oil inlet 70a and the 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 in a state where the transaxle 1 is mounted on the vehicle V.

The cooling pipe 90 is a pipe member for ejecting oil to cool the electric motor 18. The cooling pipe 90 is provided in the motor chamber 41 in the transaxle housing 40. As shown in FIG. 5, the cooling pipe 90 has a first cooling pipe 91 provided above the first motor 20 and a second cooling pipe 92 provided above the second motor 30. The cooling pipe 90 (first cooling pipe 91, second cooling pipe 92) is provided with an oil outlet 93, and the oil supplied to the cooling pipe 90 is directed from the oil outlet 93 toward each electric motor 18. Each electric motor 18 can be cooled by ejecting in a shower shape.

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

The oil passage 100 is roughly classified into an inner oil passage 100a and an outer oil passage 100b. The internal oil passage 100a forms a through hole (perforation) in the transaxle housing 40, or forms a recess in the transaxle housing 40 and closes the recess by another member to form an oil flow path. It is something that is. Further, the external oil passage 100b is formed by a member different from the transaxle housing 40 (for example, a pipe member or the like) to form an oil flow path.

As shown in FIG. 5, in the oil passage structure 10, the oil in the oil storage portion 50 is pumped upward by the oil pump 60 via the strainer 64. As shown in FIG. 5, the oil pumped by the oil pump 60 is guided to the 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 branched and distributed to both sides in the axial direction G of the electric motor 18, and is further distributed so as to be branched. Specifically, the oil flowing out from the oil cooler 70 is the first supply path 111 toward the upper Up side of the first motor 20, the second supply path 112 toward the upper Up side of the second motor 30, and the first. It is distributed to three paths, the third supply path 113 toward the rotor shaft 24 of the motor 20.

In this way, in the oil passage structure 10, the oil is pumped toward the oil cooler 70 by the oil pump 60, 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 inclines from the upper Up to the lower Lw on the side of the transaxle housing 40 (the side on the motor chamber 41 side). The mounting portion 46 of the electric motor 20 forms a path having a corner along the axial direction G of the rotor shaft 24.

As described above, in the oil passage structure 10 of the present embodiment, the oil cooled by one oil cooler 70 is divided into a path for cooling each electric motor 18 from above Up and a path for cooling the first electric motor 20 from the inside. Distributing.

Here, in the oil passage structure 10 described above, a structure (connecting structure Y) in which through holes (perforations) forming the oil passage 100 are communicated at the boundary portion of each component forming the transaxle housing 40 may be used. The internal oil passage 100a is formed by forming a structure (closed structure X) in which the through hole (perforation) forming the oil passage 100 is closed at the boundary portion of the body. For example, in the oil passage structure 10 of the present embodiment, the closed structure X and the connecting structure Y are adopted in the internal oil passage 100a provided so as to face the peripheral surface of the first electric motor 20. The closed structure X is adopted in the peripheral side oil passage 120 constituting the lower side oil passage 101 of the internal oil passage 100a. As shown in FIG. 6 and the like, the peripheral side oil passage 120 is an oil passage provided at a position facing the peripheral surface of the first electric motor 20 and having a portion extending in the axial direction G. The connecting structure Y is adopted in the peripheral side oil passage 121 constituting the upper side oil passage 102 in the internal oil passage 100a. The peripheral side oil passage 121 is provided at a position facing the peripheral surface of the first electric motor 20, and has a portion extending in the axial direction G. Hereinafter, it will be described in more detail.

The peripheral side oil passage 120 has an edge portion 130a (see FIG. 7) of the first component 40a (constituent body A) and an edge portion 130b (see FIG. 8) of the second component 40b (constituent body B). It is an oil passage formed inside an internal space formed by abutting and fastening with fasteners such as bolts. As shown in FIGS. 6 and 7, the first component 40a is provided with an oil channel component 132 (oil channel component a) that constitutes the peripheral side oil channel 120. The oil passage component 132 has a perforation 134 formed in the axial direction G. Further, as shown in FIG. 6, in the first component 40a, the perforation 135 extending in the direction intersecting the axial direction G communicates with the perforation 134 at the intermediate portion of the oil passage component 132. It is formed. The perforation 135 is formed so as to reach a connection port connected to the oil inlet 70a of the oil cooler 70. As shown in FIG. 7, the oil passage component 132 is formed in a floating island shape in the first component 40a. Specifically, the oil passage component 132 is located at a position separated from the edge 130a of the first component 40a inside the internal space. That is, there is a gap 136 formed by a groove, a notch, or the like between the oil passage constituent portion 132 and the edge portion 130a.

Further, as shown in FIG. 8, the second component 40b has a closed portion component 138 (oil channel component b) at a position corresponding to the oil channel component 132 of the first component 40a. The closed portion component 138 is formed so as to face the first component 40a side in a state where the first component 40a and the second component 40b are abutted and integrated. The tip of the closing 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 closed portion constituent portion 138 is formed in a floating island shape in the second constituent 40b. Specifically, the closed portion constituent portion 138 is located at a position separated from the edge portion 130b of the second constituent 40b to the inside of the internal space. That is, there is a gap 142 formed by a groove, a notch, or the like between the closed portion constituent portion 138 and the edge portion 130b. Further, as shown in FIG. 6, the second component 40b is built up in the closed portion component 138.

As shown in FIG. 6, the peripheral side oil passage 120 is a perforation 134 of the oil passage component 132 provided on the first component 40a side by the closing portion 140 provided on the second component 40b side described above. It has an obstruction structure X that obstructs. Further, as described above, the perforation 134 communicates with the perforation 135 leading to the connection port with the oil cooler 70 in the middle. Therefore, the peripheral side oil passage 120 is bent at the intermediate portion of the perforation 134 provided in the first structure 40a, and the oil can flow through the perforation 135 through the path reaching the oil inlet 70a of the oil cooler 70. It is an oil channel that can be created.

Similar to the peripheral side oil passage 120 described above, the peripheral side oil passage 121 has an edge portion 130a of the first component 40a (constituent body A) and an edge portion 130b of the second component 40b (constituent body B). It is an oil passage formed inside an internal space formed by abutting and fastening with fasteners such as bolts. As shown in FIG. 7, the first component 40a is provided with an oil passage component 150 that constitutes the peripheral side oil passage 121. As shown in FIGS. 6 and 7, the oil passage component 150 has a perforation 154 formed in the axial direction G. Further, as shown in FIG. 6, in the first component 40a, a perforation 155 extending in a direction intersecting the axial direction G communicates with the perforation 154 in the intermediate portion of the oil passage component 150. It is formed. The perforation 155 is formed so as to reach the connection port connected to the oil outlet 70b of the oil cooler 70. As shown in FIG. 7, the oil channel component 150 is formed in a floating island shape in the first component 40a, similarly to the oil channel component 132 described above. Specifically, the oil passage component 150 is located at a position separated from the edge 130a of the first component 40a inside the internal space. That is, there is a gap 156 formed by a groove, a notch, or the like between the oil passage constituent portion 150 and the edge portion 130a.

Further, as shown in FIG. 8, the second component 40b has an oil passage component 158 at a position corresponding to the oil channel component 150 of the first component 40a. The oil passage component 158 is formed so as to face the first component 40a side in a state where the first component 40a and the second component 40b are abutted and integrated. The oil passage component 158 is provided with a perforation 160 formed in the axial direction G. The oil passage component 158 is formed in a floating island shape in the second component 40b, similarly to the blockage component 138 described above. Specifically, the oil passage component 158 is located at a position separated from the edge 130b of the second component 40b to the inside of the internal space. That is, there is a gap 162 formed by a groove, a notch, or the like between the oil passage constituent portion 158 and the edge portion 130b.

In the peripheral side oil passage 121, the oil passage constituents 150 and 158 of the first component 40a and the second component 40b described above are in contact with each other at the tip portion, so that the perforations 154 and 160 formed in both are communicated 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 communicates with the perforation 155 leading to the connection port with the oil cooler 70 in the middle. Therefore, the peripheral side oil passage 121 is an oil passage through which the oil returned from the oil cooler 70 can flow through a route divided into a first supply passage 111 and a third supply passage 113.

As described above, in the oil passage closing structure X of the present embodiment, the closing portion 140 provided in the second component 40b is the oil passage (oil passage constituent part 132) provided in the first component 40a. It is provided at the position corresponding to. Therefore, by fastening the first component 40a and the second component 40b, the perforation 134 of the oil passage provided in the first structure 40a can be closed by the closing portion 140. Therefore, according to the closing structure X described above, the oil passage can be closed without using other members such as a plug. As a result, the number of parts required for closing the perforation 134 forming the peripheral oil passage 120 can be reduced, which can contribute to cost reduction and weight reduction.

Further, in the above-mentioned closed structure X, the perforation 134 is closed in the internal space composed of the first structure 40a and the second structure 40b. Therefore, even if the oil seeps out at the closed portion of the oil passage, it is extremely unlikely that the oil leaks out of the internal space formed by the first constituent 40a and the second constituent 40b.

In the oil passage closing structure X having the above-described configuration, the oil passage constituent portion 132 forming the peripheral side oil passage 120 and the closed portion constituent portion 138 forming the closed portion 140 are the first constituent 40a and the second constituent, respectively. It is provided at a position separated from the edges 130a and 130b of 40b inside the internal space. Specifically, the closed structure X of the oil passage described above has a structure in which the closed portion 140 and the edge portion 130b of the second component 40b are separated by a gap 142. Further, in the oil passage closing structure X, a gap 136 is provided between the oil passage constituent portion 132 forming the oil passage and the edge portion of the first component 40a, and the gap portion 130a and the oil passage constituent portion 132 are gapped. It is configured to be separated by 136. Therefore, in the closed structure X of the oil passage, even if oil oozes out at the closed portion of the peripheral side oil passage 120, the edges 130a and 130b of the first constituent 40a and the second constituent 40b are exceeded. Very unlikely to leak out of the interior space.

In the present embodiment, an example is shown in which the closed structure X is provided at a position away from the edges 130a and 130b of the first structure 40a and the second structure 40b inside the internal space. It is not limited to. For example, the closed structure X may be provided on the edges 130a and 130b of the first structure 40a and the second structure 40b.

Further, in the above-mentioned oil passage closing structure X, fasteners such as bolts for fastening the first structure 40a and the second structure 40b are fastened to the closing portion 140 at a position adjacent to the outside of the internal space. It is supposed to be done. Therefore, the degree of adhesion of the closing portion 140 to the perforation 134 of the oil passage constituent portion 132 forming the oil passage can be increased, and the closing capacity can be improved.

In the present embodiment, a configuration in which the first structure 40a and the second structure 40b are fastened to the closed portion 140 by a fastener such as a bolt at a position adjacent to the outside of the internal space has been illustrated. Is not limited to this. That is, the first structure 40a and the second body 40b may be fastened at a position outside the vicinity of the closed portion 140.

Further, in the above-mentioned oil passage closing structure X, the second structure 40b has a structure in which the closing portion 138 provided with the closing portion 140 is built up. Therefore, according to the above-described configuration, the strength of the closing portion 140 can be sufficiently secured, and the oil passage can be firmly closed. In the present embodiment, an example in which the closed portion component 138 is built up is shown, but the present invention is not limited to this. That is, the closed portion constituent portion 138 may be configured so as not to be built up, or the closed portion constituent portion 138 may be reinforced by another configuration.

Further, as described above, in the oil passage structure 10 of the present embodiment, the perforations 154 and 160 forming the peripheral side oil passage 121 are connected so as to communicate with each other by the connecting structure Y. Therefore, even if the oil seeps out at the communication portion of the peripheral side oil passage 121, there is an extremely high possibility that the oil leaks out of the internal space formed by the first component 40a and the second component 40b. low.

The present invention is not limited to those shown as the above-described embodiments, modifications, and the like, and there may be other embodiments from the teaching and spirit within the scope of the claims. The components of the above-described embodiment 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 are arbitrarily combined. May be configured.

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

40a: First constituent (construction A)
40b: Second component (structure B)
42: Gear chamber 120: Peripheral surface side oil passage 121: Peripheral surface side oil passage 130a: Edge portion 130b: Edge portion 130c: Edge portion 132: Oil passage constituent portion (oil passage constituent portion a)
134: Drilling 136: Gap 138: Blocking part component (oil passage component b)
140: Blocked part 142: Gap 150: Oil channel component (oil channel component a)
154: Drilling 158: Oil channel component (oil channel component b)
160: Drilling X: Blocking structure Y: Connecting structure

Claims (3)

A component A provided with an oil channel component a forming an oil channel, and
It has an oil passage component b capable of forming an oil passage in combination with the oil passage component a, and has a component B capable of forming an internal space by being fastened to the component A.
The oil passage is formed inside the internal space at a position adjacent to the inside of at least one of the edges of the structure A and the structure B.
A gap is provided in at least one of the oil passage constituent portion a and the edge portion of the component A, and between the oil passage constituent portion b and the edge portion of the component B.
By fastening the structure A and the structure B, the oil passage component a and the oil passage component b are brought into contact with each other and connected to each other inside the internal space.
An oil channel structure characterized by. A perforation forming an oil passage is provided in one of the structure A and the structure B.
On the other side of the structure A and the structure B, a closing portion for closing the perforation is provided at a position corresponding to the perforation.
Inside the internal space, the perforation is blocked by the obstruction.
An oil channel structure characterized by. The 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 closed portion.
2. The oil passage structure according to claim 2.

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