Oil lubrication structure

Abstract

The utility model provides an oil lubrication structure which can fully lubricate a bearing after a vehicle is just started. An oil lubrication structure is provided with: a bearing that rotatably supports a rotor shaft; an oil pump that circulates oil; a lubrication pipe for supplying the oil from the oil pump to the bearing; and an oil storage part which is located between the lubrication pipe and the bearing and stores the oil.

Description

Technical Field

[0001] This disclosure relates to oil-lubricated structures. Background Technology

[0002] Patent document 1 describes a lubrication structure for a motor that uses oil dripping from the oil supply line to cool the coil end of the motor and to lubricate the bearing that supports the rotating shaft of the motor.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2023-070244

[0004] However, in vehicles with motor-driven lubrication systems, the oil pump is not activated immediately after starting the engine, thus no bearing oil is supplied. Furthermore, the bearings are located far from the oil pump, so time passes before the oil reaches them. As a result, the bearings are sometimes not adequately lubricated immediately after starting the vehicle. Utility Model Content

[0005] This disclosure was made in view of the above circumstances, and its purpose is to provide an oil-lubricating structure that can adequately lubricate the bearings immediately after the vehicle is started.

[0006] The oil lubrication structure disclosed herein includes: a bearing that supports a rotor shaft for rotation; an oil pump that circulates oil; a lubrication pipe that supplies the oil from the oil pump to the bearing; and an oil reservoir located between the lubrication pipe and the bearing for storing the oil.

[0007] According to this disclosure, an oil-lubricated structure is available that can fully lubricate the bearings immediately after the vehicle is started. Attached Figure Description

[0008] Figure 1 This is a diagram showing a schematic structure of the oil lubrication structure in Embodiment 1.

[0009] Figure 2 This is a diagram showing a schematic structure of the oil lubrication structure in Embodiment 2.

[0010] Figure 3 Is with Figure 2 The sectional view corresponding to line AA.

[0011] Explanation of reference numerals in the attached figures:

[0012] 1. 11 Oil lubrication structure; 2. 12 Rotor shaft; 3. 13 Bearing; 4. 14 EOP; 5. 15 Lubrication pipe; 6. 16 Oil storage section. Detailed Implementation

[0013] The oil lubrication structure of the embodiments of this disclosure will be described with reference to the accompanying drawings. Furthermore, the constituent elements in the following embodiments include elements that can and are easily substituted by those skilled in the art, or elements that are substantially the same.

[0014] (Implementation Method 1)

[0015] [Composition of oil-lubricated structure]

[0016] Figure 1 This is a diagram showing a schematic structure of the oil lubrication structure according to Embodiment 1. The oil lubrication structure 1 includes a rotor shaft 2, a bearing 3, an EPO (Electric Oil Pump) 4, a lubrication pipe 5, and an oil storage section 6.

[0017] The oil lubrication structure 1 circulates oil O to lubricate various parts of the vehicle.

[0018] Rotor shaft 2 is connected to the rotor and rotates as a whole with the rotor.

[0019] The bearing 3 supports the rotor shaft 2 so that it can rotate.

[0020] EOP4 uses electricity to circulate oil O in various parts of the vehicle. However, the oil lubrication structure 1 only needs to have an oil pump, for example, a mechanical oil pump can also be used.

[0021] Lubrication pipe 5 is the oil passage that supplies oil O from EOP4 to bearing 3.

[0022] The oil reservoir 6 is located between the lubrication pipe 5 and the bearing 3, and stores oil O. The oil reservoir 6 may have, for example, a U-shaped groove. However, the shape of the oil reservoir 6 is not particularly limited as long as it is located between the lubrication pipe 5 and the bearing 3 and can store oil O.

[0023] [Functions of the oil storage section]

[0024] When the vehicle equipped with the oil lubrication structure 1 is in motion, oil O is supplied to the groove of the oil reservoir 6 while the EOP4 is supplying oil O to the bearing 3. Furthermore, when the vehicle is stationary, oil O is stored in the groove of the oil reservoir 6. Afterwards, if the vehicle starts, the EOP4 is not activated immediately after starting, so oil O is not supplied to the bearing 3. However, if the vehicle moves, the oil O accumulated in the groove of the oil reservoir 6 overflows and falls due to acceleration, thus supplying oil O to the bearing 3. Moreover, when the rotor shaft 2 rotates at high speed, a negative pressure is generated, and the oil O stored in the groove of the oil reservoir 6 is drawn in, thus supplying oil O to the bearing 3. As a result, according to the oil lubrication structure 1, the bearing 3 can be adequately lubricated immediately after the vehicle starts.

[0025] (Implementation Method 2)

[0026] [Structure of oil-lubricated structure]

[0027] Figure 2 This is a schematic diagram showing the oil lubrication structure of Embodiment 2. The oil lubrication structure 11 includes a rotor shaft 12, a bearing 13, an EOP 14, a lubrication pipe 15, and an oil storage section 16. Descriptions of structures identical to those in Embodiment 1 are omitted as appropriate.

[0028] Figure 3 Is with Figure 2 The cross-sectional view corresponding to line AA. The oil reservoir 16 is formed in a C-shape covering the outer periphery of the lubrication tube 15. At the lower part of the oil reservoir 16, oil O1 drips down from the lubrication tube 15 to store oil O2.

[0029] [Functions of the oil storage section]

[0030] When a vehicle equipped with the oil lubrication structure 11 is in motion, oil O1 is supplied to the bearing 13 from the EOP 14, while oil O2 is also supplied to the oil reservoir 16. Furthermore, when the vehicle is stationary, oil O2 is stored in the lower part of the oil reservoir 16. Afterwards, if the vehicle starts, the EOP 14 is not activated immediately after starting, so oil O1 is not supplied to the bearing 13. However, if the vehicle moves, the oil O2 stored in the oil reservoir 16 overflows and falls due to acceleration, thus supplying oil O2 to the bearing 13. As a result, according to the oil lubrication structure 11, the bearing 13 can be adequately lubricated immediately after the vehicle starts.

[0031] Those skilled in the art can readily deduce further effects and variations. Therefore, the broader technical solutions of this invention should not be limited to the specific details and representative embodiments shown and described above. Thus, various modifications can be made without departing from the spirit or scope of the overall inventive concept as defined by the appended claims and their equivalents.

Claims

1. An oil-lubricated structure, wherein, The oil-lubricated structure includes: Bearings, which support the rotor shaft to enable rotation; An oil pump circulates the oil. A lubrication pipe that supplies oil from the oil pump to the bearing; and An oil storage section, located between the lubrication pipe and the bearing, stores the oil.

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