Lubricating device and supercharger

Abstract

The utility model provides a kind of lubricating device and supercharger.Lubricating device includes connecting piece (2), oil return pipe (3) and oil inlet pipe (4).Connecting piece (2) is used to connect intermediate body (1), intermediate body (1) has bearing hole (11), connecting piece (2) has oil return flow passage (22) and oil inlet flow passage (21), oil return flow passage (22) is used to communicate bearing hole (11), and oil inlet flow passage (21) is used to communicate bearing hole (11).Oil return pipe (3) is connected to connecting piece (2), and oil return pipe (3) has oil return passage (31), and oil return passage (31) is communicated with oil return flow passage (22).Oil inlet pipe (4) is connected to connecting piece (2), and oil inlet pipe (4) has oil inlet passage (45), and oil inlet passage (45) is communicated with oil inlet flow passage (21).The oil inlet pipe (4) and oil return pipe (3) of the lubricating device are connected with connecting piece (2), and are installed on intermediate body (1) by connecting piece (2), and installation is simple, and the number of parts is less.

Description

Technical Field

[0001] This utility model belongs to the field of turbocharger technology, and in particular relates to a lubrication device and a turbocharger. Background Technology

[0002] A turbocharger compresses air, increasing the intake air density of the engine, thereby increasing the engine's power output per liter. The turbocharger includes rotating components, which require lubrication to ensure good performance and a longer service life.

[0003] In existing technologies, lubricating oil is delivered to the rotating components of the turbocharger via lubrication oil pipes. However, the arrangement of lubrication oil pipes in existing technologies is complex and involves a large number of components. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] This utility model provides a lubrication device, comprising:

[0006] A connector for connecting an intermediate body, the intermediate body having a bearing hole, the connector having an oil return channel and an oil inlet channel, the oil return channel for communicating with the bearing hole, and the oil inlet channel for communicating with the bearing hole;

[0007] The return oil pipe is connected to the connector and has a return oil channel communicating with the return oil flow path; and

[0008] An oil inlet pipe is connected to the connector and has an oil inlet channel that communicates with the oil inlet flow channel.

[0009] In this utility model, both the oil return pipe and the oil inlet pipe of the lubrication device are connected to a connector, which then mounts the device onto the intermediate body. Installation is simple and requires few parts. The oil inlet channel is connected to the oil inlet flow channel, which in turn is connected to the bearing bore. Lubricating oil can enter the bearing bore from the oil inlet channel and flow channel to lubricate the bearing. The oil return channel is connected to the oil return flow channel, which is also connected to the bearing bore. Lubricated oil flows out through the oil return flow channel.

[0010] In some embodiments, the connector has a connecting through hole, the intermediate body has a threaded hole, the connecting through hole is used to pass through a fastener, and the threaded hole is used to thread into the fastener.

[0011] By setting a connecting through hole on the connector, and using a fastener to pass through the connecting through hole, the fastener is threadedly connected to the threaded hole of the intermediate body, thereby enabling the connector to be installed on the intermediate body.

[0012] In some embodiments, the connector has two connecting through holes, and the oil return channel and the oil inlet channel are both located between the two connecting through holes.

[0013] By setting two connecting through holes on the connector and placing the oil return channel and the oil inlet channel between the two connecting holes, the distribution of the oil inlet channel, the oil return channel and the connecting through holes on the connector is more reasonable, which makes the connection between the connector and the intermediate body more solid and the stress on the connector and the intermediate body more uniform.

[0014] In some embodiments, the return oil pipe and the inlet oil pipe are connected to the same side of the connector.

[0015] By connecting the return oil pipe and the inlet oil pipe to the same side of the connector, the arrangement of the return oil pipe, the inlet oil pipe, and the connector is more reasonable, avoiding interference between the return oil pipe and the inlet oil pipe when the connector is installed on the intermediate body. In addition, it also facilitates the flow of lubricating oil in the inlet and return oil channels.

[0016] In some embodiments, the oil inlet pipe includes:

[0017] The first pipe segment is connected to the connector;

[0018] The second pipe section, wherein the first pipe section is connected to the first pipe section; and

[0019] The third pipe segment is connected to the second pipe segment.

[0020] By configuring the oil inlet pipe to include a first pipe section, a second pipe section, and a third pipe section connected in sequence, it is convenient to adjust the overall length of the oil inlet pipe and to extend it, thereby increasing the diversity of the layout.

[0021] In some embodiments, the oil inlet pipe further includes a first connector, through which the first pipe segment is connected to the second pipe segment.

[0022] Connecting the first pipe section and the second pipe section using the first connector not only allows for quick installation, but also enables repeated disassembly and assembly without damaging the first and second pipe sections, facilitating maintenance or replacement.

[0023] In some embodiments, the oil inlet pipe further includes a second connector, and the second pipe segment is connected to the third pipe segment via the second connector.

[0024] Using the second connector to connect the second and third pipe sections not only allows for quick installation, but also enables repeated disassembly and assembly without damaging the second and third pipe sections, facilitating maintenance or replacement.

[0025] In some embodiments, the oil inlet pipe further includes a pipe fitting connected to the third pipe section, and the pipe fitting is used to connect to external equipment.

[0026] The installation of pipe fittings facilitates the connection of the oil inlet pipe to external equipment.

[0027] This utility model also provides a booster, comprising:

[0028] intermediate;

[0029] As described above, in the lubrication device, the connector is connected to the intermediate body.

[0030] Because the turbocharger includes the aforementioned lubrication device, it also has the advantages of easy installation and fewer parts.

[0031] In some embodiments, the intermediate body has two bearing holes, a first flow channel and a second flow channel, the first flow channel communicating with one of the bearing holes, the second flow channel communicating with the other bearing hole, the first flow channel communicating with the oil inlet flow channel, and the second flow channel communicating with the oil inlet flow channel.

[0032] Two bearings can be installed by setting two bearing holes in the intermediate body. A first flow channel and a second flow channel are set in the intermediate body. The first flow channel is connected to one of the bearing holes, and the second flow channel is connected to the other bearing hole. The first flow channel is connected to the oil inlet channel, and the second flow channel is connected to the oil inlet channel, which can achieve simultaneous lubrication of the bearings in the two bearing holes. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of a turbocharger provided in one embodiment of the present invention;

[0035] Figure 2 This is a cross-sectional view of a turbocharger provided in one embodiment of the present invention. Figure 1 ;

[0036] Figure 3 This is a cross-sectional view of a turbocharger provided in one embodiment of the present invention. Figure 2 .

[0037] Figure label:

[0038] 1. Intermediate body; 11. Bearing bore; 12. First flow channel; 13. Second flow channel; 14. Third flow channel; 15. Fourth flow channel; 16. Threaded hole; 17. Oil return chamber; 18. Fifth flow channel;

[0039] 2. Connecting parts; 21. Oil inlet channel; 22. Oil return channel; 23. Connecting through hole;

[0040] 3. Return oil pipe; 31. Return oil passage;

[0041] 4. Oil inlet pipe; 41. First pipe section; 42. Second pipe section; 43. Third pipe section; 44. Pipe fitting; 45. Oil inlet channel; 46. First connector; 47. Second connector;

[0042] 5. Fasteners. Detailed Implementation

[0043] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0044] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0045] A lubrication device includes a connector, a return oil pipe, and an inlet oil pipe. The connector connects to an intermediate body. The intermediate body has a bearing bore. The connector has a return oil flow channel and an inlet oil flow channel. The return oil flow channel communicates with the bearing bore. The return oil pipe is connected to the connector. The return oil pipe has a return oil passage communicating with the return oil flow channel. The inlet oil pipe is connected to the connector. The inlet oil pipe has an inlet oil passage communicating with the inlet oil flow channel.

[0046] In this utility model, both the oil return pipe and the oil inlet pipe of the lubrication device are connected to a connector, which then mounts the device onto the intermediate body. Installation is simple and requires few parts. The oil inlet channel is connected to the oil inlet flow channel, which in turn is connected to the bearing bore. Lubricating oil can enter the bearing bore from the oil inlet channel and flow channel to lubricate the bearing. The oil return channel is connected to the oil return flow channel, which is also connected to the bearing bore. Lubricated oil flows out through the oil return flow channel.

[0047] like Figure 1 As shown, in some embodiments, the turbocharger includes an intermediate body 1, a connector 2, a return oil pipe 3, and an inlet oil pipe 4. The connector 2 is connected to the intermediate body 1. The inlet oil pipe 4 is connected to the connector 2. The return oil pipe 3 is connected to the connector 2.

[0048] Specifically, one side of connector 2 is connected to intermediate body 1. The other side of connector 2 is connected to oil inlet pipe 4 and oil return pipe 3. By connecting oil return pipe 3 and oil inlet pipe 4 to the same side of connector 2, the arrangement of oil return pipe 3, oil inlet pipe 4 and connector 2 is more reasonable, avoiding interference between oil return pipe 3 and oil inlet pipe 4 when connector 2 is installed on intermediate body 1. In addition, it also facilitates the flow of lubricating oil in oil inlet channel 45 and oil return channel 31.

[0049] In some embodiments, the cross-sectional shape of the return oil pipe 3 along its own extension direction is circular.

[0050] In some embodiments, the cross-sectional shape of the oil inlet pipe 4 along its own extending direction is circular.

[0051] In some embodiments, the oil inlet pipe 4 is connected to the intermediate body 1 by welding. Of course, in other embodiments, the oil inlet pipe 4 can also be connected to the intermediate body 1 by bolting.

[0052] In some embodiments, the return oil pipe 3 is connected to the intermediate body 1 by welding. Of course, in other embodiments, the return oil pipe 3 can also be connected to the intermediate body 1 by bolting.

[0053] In some embodiments, the oil inlet pipe 4 includes a first pipe section 41, a second pipe section 42, and a third pipe section 43. The first pipe section 41 is connected to the connector 2. The second pipe section 42 is connected to the first pipe section 41. The third pipe section 43 is connected to the second pipe section 42. By configuring the oil inlet pipe 4 to include the first pipe section 41, the second pipe section 42, and the third pipe section 43 connected in sequence, it is convenient to adjust the overall length of the oil inlet pipe 4 and to extend it, thereby increasing the diversity of its arrangement.

[0054] Specifically, the first pipe section 41 is a steel pipe. The second pipe section 42 is a steel braided hose. The third pipe section 43 is a steel pipe. The second pipe section 42 is a steel braided hose. When the length of the oil inlet pipe 4 is not suitable, the second pipe section 42 can be adjusted and bent to achieve the installation. In addition, it can also reduce vibration.

[0055] In some embodiments, the first pipe segment 41 has a first end and a second end opposite to the first end. The second pipe segment 42 has a third end and a fourth end opposite to the third end. The third pipe segment 43 has a fifth end and a sixth end opposite to the fifth end. The first end is connected to the intermediate body 1. The second end is connected to the third end. The fourth end is connected to the fifth end.

[0056] In some embodiments, the oil inlet pipe 4 further includes a first connector 46 and a second connector 47. The second end is connected to the third end via the first connector 46. The fourth end is connected to the fifth end via the second connector 47. Connecting the first pipe segment 41 and the second pipe segment 42 using the first connector 46 not only allows for quick installation but also enables repeated disassembly and assembly without damage to the first and second pipe segments 41 and 42, facilitating maintenance or replacement. Connecting the second pipe segment 42 and the third pipe segment 43 using the second connector 47 not only allows for quick installation but also enables repeated disassembly and assembly without damage to the second and third pipe segments 42 and 43, facilitating maintenance or replacement.

[0057] In some embodiments, the oil inlet pipe 4 further includes a pipe fitting 44. The pipe fitting 44 is connected to the third pipe section 43. The pipe fitting 44 is used to connect to external equipment. The provision of the pipe fitting 44 facilitates the connection of the oil inlet pipe 4 to external equipment.

[0058] Specifically, pipe fitting 44 is connected to the sixth end.

[0059] Optionally, the external device is the engine crankcase.

[0060] like Figure 2 and Figure 3As shown, in some embodiments, the intermediate body 1 has a bearing bore 11. The connector 2 has an oil return channel 22 and an oil inlet channel 21. The oil return pipe 3 has an oil return passage 31. The oil inlet pipe 4 has an oil inlet passage 45. The oil inlet channel 21 communicates with the bearing bore 11. The oil inlet channel 21 communicates with the oil inlet passage 45. The oil return channel 22 communicates with the bearing bore 11. The oil return passage 31 communicates with the oil return channel 22. Lubricating oil can enter the bearing bore 11 from the oil inlet passage 45 through the oil inlet channel 21 to lubricate the bearing in the bearing bore 11. The lubricated lubricating oil flows out from the oil return passage 31 through the oil return channel 22.

[0061] In some embodiments, the bearing hole 11 has a circular cross-sectional shape along its axial direction.

[0062] In some embodiments, the intermediate body 1 has two bearing holes 11. The two bearing holes 11 are spaced apart. By providing two bearing holes 11 on the intermediate body 1, two bearings can be installed.

[0063] In some embodiments, the intermediate body 1 has a first flow channel 12 and a second flow channel 13. The first flow channel 12 communicates with one of the bearing bores 11. The second flow channel 13 communicates with the other bearing bore 11. The first flow channel 12 communicates with an oil inlet flow channel 21. The second flow channel 13 communicates with the oil inlet flow channel 21. This arrangement enables simultaneous lubrication of the bearings in both bearing bores 11.

[0064] Specifically, the two bearing holes 11 are coaxially arranged. The axial direction of the first flow channel 12 is inclined to the axial direction of the bearing hole 11.

[0065] Specifically, the axial direction of the second flow channel 13 is inclined to the axial direction of the bearing hole 11.

[0066] In some embodiments, intermediate 1 has a third flow channel 14 and a fourth flow channel 15. The third flow channel 14 is connected to the oil inlet flow channel 21. The third flow channel 14 is connected to the fourth flow channel 15. The fourth flow channel 15 is connected to the first flow channel 12. The fourth flow channel 15 is connected to the second flow channel 13.

[0067] Specifically, the extension direction of the third flow channel 14 is parallel to the extension direction of the oil inlet flow channel 21.

[0068] Specifically, the extension direction of the fourth flow channel 15 is perpendicular to the extension direction of the third flow channel 14.

[0069] Specifically, the extension direction of the fourth flow channel 15 is parallel to the extension direction of the bearing hole 11.

[0070] In some embodiments, the cross-sectional shape of the first flow channel 12 along its extending direction is circular.

[0071] In some embodiments, the cross-sectional shape of the second flow channel 13 along its extension direction is circular.

[0072] In some embodiments, the cross-sectional shape of the third flow channel 14 along its extension direction is circular.

[0073] In some embodiments, the fourth flow channel 15 has a circular cross-sectional shape along its extending direction.

[0074] In some embodiments, the intermediate body 1 further includes an oil return chamber 17, which communicates with the bearing bore 11.

[0075] In some embodiments, the intermediate body 1 further includes a fifth flow channel 18, which communicates with the oil return chamber 17. The fifth flow channel 18 is also communicated with the oil return flow channel 22.

[0076] Specifically, the extension direction of the fifth flow channel 18 is parallel to the extension direction of the return oil flow channel 22.

[0077] In some embodiments, the fifth flow channel 18 has a circular cross-section along its extension direction.

[0078] In some embodiments, the connector 2 has a connecting through hole 23. The intermediate body 1 has a threaded hole 16. The fastener 5 passes through the connecting through hole 23 and is threadedly connected to the intermediate body 1 through the threaded hole 16. In use, it is only necessary to align the connecting through hole 23 with the threaded hole 16, and pass the fastener 5 through the connecting through hole 23 to connect it to the intermediate body 1 to achieve the connection between the connector 2 and the intermediate body 1. The structure is simple and the operation is convenient.

[0079] Optionally, fastener 5 is a bolt.

[0080] In some embodiments, the connecting through hole 23 is a circular hole. Of course, in other embodiments, the connecting through hole 23 may also be an elliptical hole.

[0081] In some embodiments, the connector 2 has two connecting through holes 23. Correspondingly, the intermediate body 1 has two threaded holes 16. The connecting through holes 23 and the threaded holes 16 are provided in a one-to-one correspondence. Correspondingly, two fasteners 5 are also provided. The fasteners 5 are provided in a one-to-one correspondence with the connecting through holes 23.

[0082] In some embodiments, the return oil channel 22 and the inlet oil channel 21 are both located between two connecting through holes 23. By providing two connecting through holes 23 on the connector 2 and placing the return oil channel 22 and the inlet oil channel 21 between the two connecting holes, the distribution of the inlet oil channel 21, the return oil channel 22, and the connecting through holes 23 on the connector 2 is more reasonable, which makes the connection between the connector 2 and the intermediate body 1 more solid and the stress on the connector 2 and the intermediate body 1 more uniform.

[0083] In some embodiments, the axes of the two connecting through holes 23 are parallel.

[0084] In some embodiments, the axis of the return oil channel 22 is parallel to the axis of the inlet oil channel 21.

[0085] In some embodiments, the axis of the oil inlet channel 21 is parallel to the axis of the connecting through hole 23.

[0086] In some embodiments, the cross-sectional shape of the return oil channel 22 along its extending direction is circular. Of course, in other embodiments, the cross-sectional shape of the return oil channel 22 along its extending direction may also be elliptical.

[0087] In some embodiments, the cross-sectional shape of the oil inlet channel 21 along its extending direction is circular. Of course, in other embodiments, the cross-sectional shape of the oil inlet channel 21 along its extending direction may also be elliptical.

[0088] In use, the connector 2 and the intermediate body 1 are placed together, and the connector 2 and the intermediate body 1 are fixedly connected together using fasteners 5. Lubricating oil enters through the oil inlet channel 45, flows through the oil inlet channel 21, the third channel 14, the fourth channel 15, and the first channel 12, and enters one of the bearing holes 11. Lubricating oil also enters through the oil inlet channel 45, flows through the oil inlet channel 21, the third channel 14, the fourth channel 15, and the second channel 13, and enters the other bearing hole 11. After entering the bearing hole 11, the lubricating oil flows into the return oil chamber 17 under gravity, flows through the fifth channel 18 and the return oil channel 22 into the return oil channel 31, and finally flows out through the return oil channel 31.

[0089] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0090] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0091] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0092] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0093] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0094] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A lubrication device, characterized in that, include: A connector (2) is used to connect an intermediate body (1), the intermediate body (1) having a bearing hole (11), the connector (2) having an oil return channel (22) and an oil inlet channel (21), the oil return channel (22) being used to connect the bearing hole (11), and the oil inlet channel (21) being used to connect the bearing hole (11); A return oil pipe (3) is connected to the connector (2), the return oil pipe (3) has a return oil channel (31), the return oil channel (31) is connected to the return oil flow channel (22); and An oil inlet pipe (4) is connected to the connector (2). The oil inlet pipe (4) has an oil inlet channel (45) that is connected to the oil inlet flow channel (21).

2. The lubrication device according to claim 1, characterized in that, The connector (2) has a connecting through hole (23), the intermediate body (1) has a threaded hole (16), the connecting through hole (23) is used to pass through the fastener (5), and the threaded hole (16) is used to thread the fastener (5).

3. The lubrication device according to claim 2, characterized in that, The connector (2) has two connecting through holes (23), and the return oil channel (22) and the inlet oil channel (21) are both located between the two connecting through holes (23).

4. The lubrication device according to claim 1, characterized in that, The return oil pipe (3) and the inlet oil pipe (4) are connected to the same side of the connector (2).

5. The lubrication device according to claim 1, characterized in that, The oil inlet pipe (4) includes: The first pipe section (41) is connected to the connector (2); The second pipe section (42), to which the first pipe section (41) is connected; and The third pipe section (43) is connected to the second pipe section (42).

6. The lubrication device according to claim 5, characterized in that, The oil inlet pipe (4) also includes a first connector (46), through which the first pipe section (41) is connected to the second pipe section (42).

7. The lubrication device according to claim 5, characterized in that, The oil inlet pipe (4) also includes a second connector, and the second pipe section (42) is connected to the third pipe section (43) through the second connector.

8. The lubrication device according to claim 5, characterized in that, The oil inlet pipe (4) also includes a pipe joint (44), which is connected to the third pipe section (43) and is used to connect to external equipment.

9. A booster, characterized in that, include: Intermediate (1); The lubrication device according to any one of claims 1-8, wherein the connector (2) is connected to the intermediate body (1).

10. The booster according to claim 9, characterized in that, The intermediate body (1) has two bearing holes (11), and the intermediate body (1) has a first flow channel (12) and a second flow channel (13). The first flow channel (12) is connected to one of the bearing holes (11), and the second flow channel (13) is connected to the other bearing hole (11). The first flow channel (12) is connected to the oil inlet flow channel (21), and the second flow channel (13) is connected to the oil inlet flow channel (21).

Images